{"id":2728,"date":"2024-03-29T17:00:11","date_gmt":"2024-03-29T17:00:11","guid":{"rendered":"https:\/\/metisengineering-com.stackstaging.com\/?p=2728"},"modified":"2025-12-05T12:09:03","modified_gmt":"2025-12-05T12:09:03","slug":"des-tests-effectues-par-des-tiers-confirment-la-capacite-des-gardes-cellulaires-a-detecter-lemballement-thermique-des-vehicules-electriques-plus-rapidement-que-dautres-methodes","status":"publish","type":"post","link":"https:\/\/metisengineering.com\/fr\/third-party-tests-confirm-cell-guards-ability-to-detect-thermal-runaway-in-electric-vehicles-faster-than-other-methods\/","title":{"rendered":"Des tests effectu\u00e9s par des tiers confirment la capacit\u00e9 du Cell Guard \u00e0 d\u00e9tecter l'emballement thermique"},"content":{"rendered":"<div id=\"pl-2728\"  class=\"panel-layout\" ><div id=\"pg-2728-0\"  class=\"panel-grid panel-no-style\" ><div id=\"pgc-2728-0-0\"  class=\"panel-grid-cell\" ><div id=\"panel-2728-0-0-0\" class=\"so-panel widget widget_sow-editor panel-first-child panel-last-child\" data-index=\"0\" ><div\n\t\t\t\n\t\t\tclass=\"so-widget-sow-editor so-widget-sow-editor-base\"\n\t\t\t\n\t\t>\n<div class=\"siteorigin-widget-tinymce textwidget\">\n\t<div class=\"paragraph\">\n<ul>\n<li>Rapport ind\u00e9pendant publi\u00e9 par la <a href=\"https:\/\/iopscience.iop.org\/article\/10.1149\/1945-7111\/ad2440\/meta\" target=\"_blank\" rel=\"noopener\">Soci\u00e9t\u00e9 d'\u00e9lectrochimie<\/a> a test\u00e9 diverses technologies de d\u00e9tection de l'emballement thermique,<\/li>\n<li>Lors des essais, les COV se sont r\u00e9v\u00e9l\u00e9s \u00eatre la m\u00e9thode de d\u00e9tection de gaz la plus efficace pour la surveillance de l'emballement thermique par rapport \u00e0 l'hydrog\u00e8ne,<\/li>\n<li>Cell Guard est un capteur unique capable d'indiquer l'\u00e9ventement des cellules et d'alerter rapidement en cas d'emballement thermique, dans certains cas plus de sept minutes avant les autres technologies,<\/li>\n<li>Cell Guard vise \u00e0 fournir les donn\u00e9es suppl\u00e9mentaires vitales et souvent n\u00e9glig\u00e9es n\u00e9cessaires pour obtenir une image plus compl\u00e8te de l'\u00e9tat de sant\u00e9 des batteries,<\/li>\n<li>Cell Guard ne surveille pas seulement les COV, mais aussi d'autres param\u00e8tres importants pour la sant\u00e9 des batteries, tels que le changement de pression, l'humidit\u00e9, le point de ros\u00e9e, la temp\u00e9rature de l'air et les chocs m\u00e9caniques,<\/li>\n<li>Metis Engineering affirme que cela peut grandement am\u00e9liorer la sant\u00e9 et la long\u00e9vit\u00e9 des batteries lithium-ion et am\u00e9liorer la valeur de revente des VE en fournissant au march\u00e9 des VE d'occasion des informations indispensables pour les passeports des batteries,<\/li>\n<li>Test\u00e9 et certifi\u00e9 selon les normes automobiles ISO.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div><\/div><\/div><div id=\"pgc-2728-0-1\"  class=\"panel-grid-cell\" ><div id=\"panel-2728-0-1-0\" class=\"so-panel widget widget_sow-image panel-first-child panel-last-child\" data-index=\"1\" ><div\n\t\t\t\n\t\t\tclass=\"so-widget-sow-image so-widget-sow-image-default-8b5b6f678277-2728\"\n\t\t\t\n\t\t>\n<div class=\"sow-image-container\">\n\t\t<img \n\tsrc=\"https:\/\/metisengineering.com\/wp-content\/uploads\/2024\/07\/metis-graph.png\" width=\"393\" height=\"353\" srcset=\"https:\/\/metisengineering.com\/wp-content\/uploads\/2024\/07\/metis-graph.png 393w, https:\/\/metisengineering.com\/wp-content\/uploads\/2024\/07\/metis-graph-300x269.png 300w, https:\/\/metisengineering.com\/wp-content\/uploads\/2024\/07\/metis-graph-64x57.png 64w\" sizes=\"(max-width: 393px) 100vw, 393px\" alt=\"\" \t\tclass=\"so-widget-image\"\/>\n\t<\/div>\n\n<\/div><\/div><\/div><\/div><div id=\"pg-2728-1\"  class=\"panel-grid panel-no-style\" ><div id=\"pgc-2728-1-0\"  class=\"panel-grid-cell\" ><div id=\"panel-2728-1-0-0\" class=\"so-panel widget widget_sow-editor panel-first-child panel-last-child\" data-index=\"2\" ><div\n\t\t\t\n\t\t\tclass=\"so-widget-sow-editor so-widget-sow-editor-base\"\n\t\t\t\n\t\t>\n<div class=\"siteorigin-widget-tinymce textwidget\">\n\t<div class=\"paragraph\">\n<p><strong>Metis Engineering<\/strong>leader dans le domaine des capteurs bas\u00e9s sur le r\u00e9seau CAN, a communiqu\u00e9 aujourd'hui les d\u00e9tails d'une publication des Sandia National Laboratories dans la revue <a href=\"https:\/\/iopscience.iop.org\/article\/10.1149\/1945-7111\/ad2440\/meta\" target=\"_blank\" rel=\"noopener\">Journal de la soci\u00e9t\u00e9 \u00e9lectrochimique<\/a>. Les tests ont montr\u00e9 que le capteur Cell Guard a d\u00e9tect\u00e9 un incident d'emballement thermique sept minutes plus rapidement que les autres \u00e9valuations rapport\u00e9es.<\/p>\n<p><a href=\"https:\/\/metisengineering.com\/product\/cell-guard\/\" target=\"_blank\" rel=\"noopener\">Protection des cellules<\/a> est un capteur unique qui fournit des informations pr\u00e9cises et d\u00e9taill\u00e9es sur l'\u00e9tat d'une batterie lithium-ion afin d'en am\u00e9liorer la long\u00e9vit\u00e9. Il est \u00e9galement capable de d\u00e9tecter l'\u00e9vent des cellules, signe pr\u00e9coce d'une d\u00e9faillance catastrophique de la batterie, ce qui r\u00e9duit consid\u00e9rablement le risque d'incendie dans les v\u00e9hicules \u00e9lectriques (EV) et les syst\u00e8mes de stockage d'\u00e9nergie (ESS).<\/p>\n<p>Contrairement aux syst\u00e8mes de gestion de batterie (BMS) actuels, qui ne mesurent g\u00e9n\u00e9ralement que les variations de temp\u00e9rature et de tension, Cell Guard surveille une s\u00e9rie de param\u00e8tres environnementaux n\u00e9cessaires pour garantir que la batterie continue \u00e0 fonctionner dans des conditions optimales. Le capteur se r\u00e9veille lorsqu'il d\u00e9tecte des compos\u00e9s organiques volatils (COV) \u00e9mis par la mise \u00e0 l'air libre de la cellule et les changements de pression. Il d\u00e9tecte \u00e9galement l'humidit\u00e9, le point de ros\u00e9e et dispose d'un acc\u00e9l\u00e9rom\u00e8tre 3 axes en option pour enregistrer les chocs.<\/p>\n<p>Bien que les VE soient intrins\u00e8quement plus s\u00fbrs que les v\u00e9hicules \u00e0 moteur \u00e0 combustion interne (MCI) et que les risques d'incendie soient nettement plus faibles, les incidents thermiques font invariablement la une des journaux, ce qui a un impact sur l'adoption de cette forme de transport relativement naissante.<\/p>\n<p>Sandia National Laboratories test\u00e9 <strong>Metis Engineering<\/strong>et deux concurrents, l'un con\u00e7u principalement pour les syst\u00e8mes d'alimentation \u00e9lectrique ind\u00e9pendants et dont le prix de vente est plusieurs fois sup\u00e9rieur, l'autre con\u00e7u pour les applications dans les v\u00e9hicules \u00e9lectriques, mais qui ne recherche que de l'hydrog\u00e8ne.<\/p>\n<p>Lors d'un essai, le capteur d'hydrog\u00e8ne a mis sept minutes de plus pour enregistrer un \u00e9v\u00e9nement thermique, alors que l'emballement thermique avait atteint un stade avanc\u00e9.<\/p>\n<p><strong>Joe Holdsworth, directeur g\u00e9n\u00e9ral de Metis Engineering, a d\u00e9clar\u00e9 :<\/strong> Nous sommes ravis que notre capteur Cell Guard ait fait ses preuves face \u00e0 deux concurrents sur le march\u00e9 dans le cadre d'un test enti\u00e8rement ind\u00e9pendant et r\u00e9alis\u00e9 par une tierce partie. Non seulement notre capteur a d\u00e9tect\u00e9 un incident thermique en moins de 60 secondes, mais les donn\u00e9es CAN qu'il fournit peuvent \u00eatre utilis\u00e9es pour informer le conducteur qu'il doit s'arr\u00eater et \u00e9vacuer le v\u00e9hicule\".<\/p>\n<p><strong>Holdsworth a poursuivi ;<\/strong> \"Le rapport indique que l'hydrog\u00e8ne n'a pas \u00e9t\u00e9 d\u00e9tect\u00e9 pendant la phase d'a\u00e9ration parce que la production d'hydrog\u00e8ne se produit g\u00e9n\u00e9ralement pendant la d\u00e9composition majeure de la cathode \u00e0 des temp\u00e9ratures beaucoup plus \u00e9lev\u00e9es, environ 200 oC. Le temps d'alerte du capteur \u00e0 hydrog\u00e8ne est donc beaucoup plus court que celui des capteurs de COV. La spectrom\u00e9trie de masse a d\u00e9tect\u00e9 l'hydrog\u00e8ne juste moins d'une minute avant l'emballement thermique, alors que les capteurs de COV et de gaz combin\u00e9s avaient un d\u00e9lai d'alerte plus optimal d'environ sept minutes. Une alerte de sept minutes provenant de la d\u00e9tection pr\u00e9coce des marqueurs de d\u00e9gradation avant un \u00e9v\u00e9nement thermique permettrait aux bus \u00e9lectriques de s'arr\u00eater, de se ranger et de proc\u00e9der \u00e0 une \u00e9vacuation en toute s\u00e9curit\u00e9, conform\u00e9ment au r\u00e8glement technique mondial sur la s\u00e9curit\u00e9 des v\u00e9hicules \u00e9lectriques #20 (GTR20)\".<\/p>\n<p><strong>Comment fonctionne Cell Guard ?<\/strong><br \/>\nCell Guard vise \u00e0 fournir les donn\u00e9es suppl\u00e9mentaires vitales et souvent n\u00e9glig\u00e9es n\u00e9cessaires pour obtenir une image plus compl\u00e8te de l'\u00e9tat de sant\u00e9 des batteries.<\/p>\n<p><strong>Ventilation des cellules et emballement thermique :<\/strong> Dans une application EV ou ESS, les donn\u00e9es fournies par Cell Guard peuvent \u00eatre utilis\u00e9es pour effectuer des contr\u00f4les crois\u00e9s avec d'autres entr\u00e9es, telles que la temp\u00e9rature des cellules, afin de v\u00e9rifier la pr\u00e9sence d'un \u00e9vent de cellule. Le capteur transmet les donn\u00e9es via son interface CAN configurable, qui peut \u00eatre utilis\u00e9e pour avertir le conducteur qu'il y a un probl\u00e8me. Le capteur peut \u00e9galement d\u00e9clencher le processus de coupure du circuit de la batterie, ce qui lui donne la possibilit\u00e9 de se refroidir afin d'\u00e9viter l'emballement thermique.<\/p>\n<p><strong>Dommages d'impact :<\/strong> L'acc\u00e9l\u00e9rom\u00e8tre optionnel de Cell Guard peut surveiller les chocs jusqu'\u00e0 24G et la dur\u00e9e de l'impact que le bloc-batterie peut subir. Ces informations peuvent radicaliser le march\u00e9 de la revente des VE d'occasion, les acheteurs disposant des informations n\u00e9cessaires pour prendre des d\u00e9cisions \u00e9clair\u00e9es concernant l'\u00e9tat de la batterie et son entretien. Elles peuvent \u00e9galement permettre de mieux comprendre l'\u00e9tat de la batterie en vue de sa r\u00e9utilisation et de son recyclage, ainsi que de toute demande d'indemnisation ult\u00e9rieure.<\/p>\n<p><strong>Refroidissement actif de l'emballage :<\/strong> Cell Guard peut surveiller le point de ros\u00e9e dans le bloc-batterie et \u00eatre utilis\u00e9 comme entr\u00e9e dans la gestion thermique des batteries pour \u00e9viter de refroidir les batteries au point o\u00f9 la condensation pourrait se d\u00e9poser sur les bornes de la batterie, ce qui pourrait conduire \u00e0 des courts-circuits et \u00e0 des incidents thermiques.<\/p>\n<p><strong>Ingression de l'eau :<\/strong> Si les niveaux d'humidit\u00e9 \u00e0 l'int\u00e9rieur d'un emballage sont \u00e9lev\u00e9s, cela peut indiquer qu'une infiltration d'eau s'est produite, Cell Guard dispose d'un capteur d'humidit\u00e9 qui permet au syst\u00e8me de d\u00e9tecter ce ph\u00e9nom\u00e8ne.<\/p>\n<p><strong>Limites des syst\u00e8mes actuels de gestion des batteries<\/strong><br \/>\nLes batteries des VE sont d\u00e9j\u00e0 \u00e9quip\u00e9es d'un syst\u00e8me de gestion de la batterie (BMS), mais ce syst\u00e8me peut avoir des limites lorsqu'il s'agit de surveiller l'\u00e9tat de sant\u00e9 de la batterie. Par exemple, les capteurs de temp\u00e9rature peuvent n'\u00eatre pr\u00e9sents que pour quelques cellules, ce qui rend difficile la d\u00e9tection des probl\u00e8mes en temps voulu. La d\u00e9tection des probl\u00e8mes de cellules par les fluctuations de tension peut \u00e9galement \u00eatre difficile \u00e0 court terme, car d'autres cellules en parall\u00e8le peuvent augmenter la tension, masquant ainsi les probl\u00e8mes d'une cellule. Cell Guard peut surmonter cette limitation en compl\u00e9tant le BMS et en fournissant des informations plus d\u00e9taill\u00e9es sur l'\u00e9tat de sant\u00e9 de la batterie.<\/p>\n<p>D\u00e9velopp\u00e9 conform\u00e9ment aux processus ISO26262 et certifi\u00e9 selon les normes automobiles ISO, Cell Guard est assembl\u00e9 au Royaume-Uni dans des conditions strictes de contr\u00f4le de la qualit\u00e9 afin de r\u00e9pondre aux commandes d'un nombre croissant d'\u00e9quipementiers et d'entreprises de niveau 1 qui l'utilisent dans des applications ASIL B.<\/p>\n<p>Avec prot\u00e8ge-cellules, <strong>Metis Engineering<\/strong> \u00e9tablit une nouvelle norme pour la surveillance avanc\u00e9e de l'\u00e9tat des batteries des v\u00e9hicules \u00e9lectriques. L'am\u00e9lioration de la s\u00e9curit\u00e9, la r\u00e9duction des mises au rebut, la diminution des risques et la connaissance incomparable de l'\u00e9tat des batteries apporteront la tranquillit\u00e9 d'esprit aux conducteurs et aux fabricants de VE et contribueront \u00e0 promouvoir l'adoption plus large des v\u00e9hicules \u00e9lectriques.<\/p>\n<\/div>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Independent report published by the Electrochemical Society tested various technologies for Thermal Runaway Detection, In the tests, VOCs shown to be the significantly more effective [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2750,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2728","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-latest-news"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Detecting Thermal Runaway in Electric Vehicles<\/title>\n<meta name=\"description\" content=\"Independent report published by the Electrochemical Society tested various technologies for Thermal Runaway Detection, In the tests, VOCs shown to be the\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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