{"id":2691,"date":"2026-05-08T16:57:55","date_gmt":"2026-05-08T08:57:55","guid":{"rendered":"https:\/\/www.bosaenergy.cn\/?p=2691"},"modified":"2026-05-08T16:57:58","modified_gmt":"2026-05-08T08:57:58","slug":"analyse-af-arsagerne-til-udbuling-og-eksplosion-af-batterihuset","status":"publish","type":"post","link":"https:\/\/www.bosaenergy.cn\/da\/analysis-of-the-causes-of-battery-casing-bulging-and-explosion\/","title":{"rendered":"Analyse af \u00e5rsagerne til udbuling og eksplosion af batterihuset"},"content":{"rendered":"<h3 class=\"wp-block-heading\" id=\"ember194\">Hvad er et udbulet batterihus?<\/h3>\n\n\n\n<p id=\"ember195\">Definition af f\u00e6nomen<\/p>\n\n\n\n<p id=\"ember196\">Under brug eller opbevaring for\u00e5rsager gasophobning inde i et batteri \u00f8get tryk, hvilket f\u00f8rer til udvidelse og deformation af huset.<\/p>\n\n\n\n<p id=\"ember197\">Intern mekanisme<\/p>\n\n\n\n<p id=\"ember198\">Dette er en makroskopisk manifestation af en unormal kemisk reaktion, der forekommer inde i batteriet, og er en af de vigtige indikatorer for batterisvigt.<\/p>\n\n\n\n<p id=\"ember199\">Potentielle risici<\/p>\n\n\n\n<p id=\"ember200\">Hvis det ikke h\u00e5ndteres omg\u00e5ende, kan det f\u00f8re til alvorlige sikkerhedsulykker s\u00e5som l\u00e6kage, brand eller endda eksplosion.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"ember201\">\u00c5rsag til skaludbuling 1: Intern gasdannelse<\/h3>\n\n\n\n<p id=\"ember202\">\u2460Elektrolytnedbrydning<\/p>\n\n\n\n<p id=\"ember203\">Under forhold som overopladning og h\u00f8j temperatur gennemg\u00e5r elektrolytten en nedbrydningsreaktion, der producerer gasser som CO2 og CH4, som er en af hovedkilderne til gas.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter is-resized\"><img decoding=\"async\" src=\"https:\/\/media.licdn.com\/dms\/image\/v2\/D5612AQFpqb2UNQ3wpQ\/article-inline_image-shrink_1000_1488\/B56Z4Gj5N1GsAI-\/0\/1778226533506?e=1779926400&amp;v=beta&amp;t=5peq8M6Y4cGiTmoebj8ISepYErZpy4Yvbg5a3zDJipU\" alt=\"\u6587\u7ae0\u5185\u5bb9\" style=\"width:331px;height:auto\"\/><\/figure>\n\n\n\n<p id=\"ember205\">\u2461SEI-filmbrud og -reparation<\/p>\n\n\n\n<p id=\"ember206\">SEI-filmen p\u00e5 den negative elektrodeoverflade brister og repareres gentagne gange under cyklussen. Denne proces forbruger kontinuerligt elektrolyt og genererer gas.<\/p>\n\n\n\n<p id=\"ember207\">\u2462Reaktion af fugt og urenheder<\/p>\n\n\n\n<p id=\"ember208\">Fugt eller metalliske urenheder, der tilf\u00f8res under produktionsprocessen, kan reagere kemisk med elektrolytten og producere gasser som brint.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"ember209\">\u00c5rsag til skaludbuling 2: Forkert brug<\/h3>\n\n\n\n<p id=\"ember210\">\u2460Overopladning og overafladning<\/p>\n\n\n\n<p id=\"ember211\">Langvarig opladning, der f\u00f8rer til overopladning, eller fortsat brug af batteriet, efter det er helt afladet, hvilket f\u00f8rer til overafladning, vil forv\u00e6rre interne sidereaktioner og accelerere gasproduktionen.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter is-resized\"><img decoding=\"async\" src=\"https:\/\/media.licdn.com\/dms\/image\/v2\/D5612AQGsQufDj5GeFg\/article-inline_image-shrink_400_744\/B56Z4GnLx9HwAM-\/0\/1778227395966?e=1779926400&amp;v=beta&amp;t=qJUvCcW3qWJHPeYUhff8KW_LsKg-nvJMUan8W6tIXtc\" alt=\"\u6587\u7ae0\u5185\u5bb9\" style=\"width:307px;height:auto\"\/><\/figure>\n\n\n\n<p id=\"ember213\">\u2461 Brug af d\u00e5rligere opladere<\/p>\n\n\n\n<p id=\"ember214\">Uoriginale eller d\u00e5rlige opladere kan ikke n\u00f8jagtigt kontrollere sp\u00e6nding og str\u00f8m, hvilket let f\u00f8rer til overopladning af batteriet og skader batteriets levetid.<\/p>\n\n\n\n<p id=\"ember215\">\u2462H\u00f8jtemperaturmilj\u00f8er<\/p>\n\n\n\n<p id=\"ember216\">Opladning eller brug af batteriet i milj\u00f8er med h\u00f8j temperatur vil accelerere nedbrydningen af elektrolytten og beskadige SEI-filmen, hvilket \u00f8ger gasproduktionshastigheden betydeligt.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"ember217\">\u00c5rsager til batteriudbuling 3: Produktionsfejl og aldring<\/h3>\n\n\n\n<p id=\"ember218\">\u2460Fejl i fremstillingsproces<\/p>\n\n\n\n<p id=\"ember219\">Procesfejl under fremstillingen, s\u00e5som grater i elektroden, rynker i separatoren og utilstr\u00e6kkelig forsegling, kan f\u00f8re til interne mikrokortslutninger eller fugtindtr\u00e6ngning, hvilket udg\u00f8r en iboende risiko for batteriudbuling.<\/p>\n\n\n\n<p id=\"ember220\">\u2461Batteriets \u00e6ldning og h\u00f8je temperatureffekter<\/p>\n\n\n\n<p id=\"ember221\">Med \u00f8get brugstid udt\u00f8mmes de aktive materialer inde i batteriet, den indre modstand \u00f8ges, SEI-filmen tykner, og de interne sidereaktioner intensiveres. H\u00f8jtemperaturmilj\u00f8er (s\u00e5som uds\u00e6ttelse for direkte sollys) accelererer denne proces, hvilket i sidste ende f\u00f8rer til \u00f8get gasproduktion og udbuling.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter is-resized\"><img decoding=\"async\" src=\"https:\/\/media.licdn.com\/dms\/image\/v2\/D5612AQGLsFuI6O4-Rw\/article-inline_image-shrink_1000_1488\/B56Z4GnnpfIkAI-\/0\/1778227510076?e=1779926400&amp;v=beta&amp;t=JkI3FwCdiDahR2DmUTqcY7GvXRs2ZSTYF3UG6PYb0UA\" alt=\"\u6587\u7ae0\u5185\u5bb9\" style=\"width:334px;height:auto\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"ember223\">Eksplosionens essens: Termisk l\u00f8bskhed<\/h3>\n\n\n\n<p id=\"ember224\">\u246090-120\u00b0C: SEI-filmnedbrydning<\/p>\n\n\n\n<p id=\"ember225\">SEI-filmnedbrydning frigiver initial varme og gas, hvilket udl\u00f8ser reaktionen.<\/p>\n\n\n\n<p id=\"ember226\">\u2461130-180\u00b0C: Separatorsmeltning og kortslutning<\/p>\n\n\n\n<p id=\"ember227\">Separatorsmeltning for\u00e5rsager direkte kontakt mellem de positive og negative elektroder, hvilket udl\u00f8ser en intern kortslutning og en hurtig temperaturstigning.<\/p>\n\n\n\n<p id=\"ember228\">\u2462150-250\u00b0C: Positiv elektrodenedbrydning og iltproduktion<\/p>\n\n\n\n<p id=\"ember229\">Positivt elektrodemateriale nedbrydes og frigiver ilt, som reagerer voldsomt med elektrolytten og accelererer temperaturstigningen.<\/p>\n\n\n\n<p id=\"ember230\">\u2463Slutresultat: Forbr\u00e6nding og eksplosion<\/p>\n\n\n\n<p id=\"ember231\">Elektrolytten br\u00e6nder, hvilket f\u00e5r batteriet til at br\u00e6nde eller endda eksplodere, hvilket resulterer i alvorlige konsekvenser.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"ember232\">Tre udl\u00f8sende betingelser for termisk runaway<\/h3>\n\n\n\n<p id=\"ember233\"><strong>\u2460Mekanisk misbrug<\/strong><\/p>\n\n\n\n<p id=\"ember234\">Batteriet uds\u00e6ttes for eksterne p\u00e5virkninger s\u00e5som kollisioner, kompression eller punkteringer, hvilket f\u00f8rer til indre strukturelle skader og kortslutninger.<\/p>\n\n\n\n<p id=\"ember235\"><strong>\u2461Elektrisk misbrug<\/strong><\/p>\n\n\n\n<p id=\"ember236\">Batteriet oplever elektriske anomalier s\u00e5som overopladning, overafladning eller eksterne kortslutninger, hvilket f\u00e5r interne reaktioner til at l\u00f8be l\u00f8bsk.<\/p>\n\n\n\n<p id=\"ember237\"><strong>\u2462Termisk misbrug<\/strong><\/p>\n\n\n\n<p id=\"ember238\">Batteriet uds\u00e6ttes for h\u00f8je temperaturer, eller k\u00f8lesystemet svigter, hvilket for\u00e5rsager varmeophobning og udl\u00f8ser termisk runaway.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"ember239\">Termisk l\u00f8bsk forplantning: Dominoeffekt<\/h3>\n\n\n\n<p id=\"ember240\">I en batteripakke kan termisk l\u00f8b fra en enkelt celle hurtigt sprede sig til andre celler og skabe en &quot;dominoeffekt&quot;. Denne udbredelse sker prim\u00e6rt gennem tre mekanismer:<\/p>\n\n\n\n<p id=\"ember241\"><strong>\u2460Varmeledning:<\/strong> H\u00f8jtemperaturcellen overf\u00f8rer varme direkte til tilst\u00f8dende celler via metalkomponenter.<\/p>\n\n\n\n<p id=\"ember242\"><strong>\u2461Varmestr\u00e5ling:<\/strong> H\u00f8jtemperaturcellen opvarmer det omgivende milj\u00f8 og andre celler gennem infrar\u00f8d str\u00e5ling.<\/p>\n\n\n\n<p id=\"ember243\"><strong>\u2462 Varmekonvektion:<\/strong> Str\u00f8mmen af h\u00f8jtemperaturgasser i batteripakken spreder varme til andre omr\u00e5der.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"ember244\">Forebyggende foranstaltning 1: Materiale- og designoptimering<\/h3>\n\n\n\n<p id=\"ember245\">\u2460Valg af materialer med h\u00f8j stabilitet<\/p>\n\n\n\n<p id=\"ember246\">Materialer med h\u00f8jere termisk stabilitet foretr\u00e6kkes, s\u00e5som LFP-batterier, hvis termiske l\u00f8bstemperatur generelt er h\u00f8jere end NMC-batteriers, hvilket reducerer risikoen for brand fra kilden.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter is-resized\"><img decoding=\"async\" src=\"https:\/\/media.licdn.com\/dms\/image\/v2\/D5612AQFmiuruZ6KO7A\/article-inline_image-shrink_1000_1488\/B56Z4Gn8rbHMAI-\/0\/1778227599999?e=1779926400&amp;v=beta&amp;t=lTDe5GUjh8k6QLIYR4LCuua95rIKS-XvYHuCCPGYVB4\" alt=\"\u6587\u7ae0\u5185\u5bb9\" style=\"aspect-ratio:1.7799409003997915;width:466px;height:auto\"\/><\/figure>\n\n\n\n<p id=\"ember248\">\u2461Optimer batteriets strukturdesign<\/p>\n\n\n\n<p id=\"ember249\">Anvend innovative strukturer og teknologier for at forbedre slagfastheden, optimere den rumlige layout og forbedre batteripakkens samlede stabilitet.<\/p>\n\n\n\n<p id=\"ember250\">\u2462Der er tilf\u00f8jet flere sikkerhedsanordninger.<\/p>\n\n\n\n<p id=\"ember251\">En indbygget eksplosionssikker ventil muligg\u00f8r retningsbestemt trykaflastning, n\u00e5r trykket er for h\u00f8jt; en sikringsenhed er designet til automatisk at afbryde kredsl\u00f8bet i tilf\u00e6lde af kortslutning for at forhindre varmespredning.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"ember252\">Forebyggende foranstaltning 2: Intelligent overv\u00e5gning og termisk styring<\/h3>\n\n\n\n<p id=\"ember253\">\u2460BMS<\/p>\n\n\n\n<p id=\"ember254\">Som batteriets &quot;hjerne&quot; er BMS&#039;en ansvarlig for at overv\u00e5ge sp\u00e6nding, str\u00f8m og temperatur i hver celle i realtid, udf\u00f8re aktiv afbalancering, forudsige fejlrisici og iv\u00e6rks\u00e6tte beskyttelsesforanstaltninger (s\u00e5som at afbryde str\u00f8mmen) i tilf\u00e6lde af unormalheder.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter is-resized\"><img decoding=\"async\" src=\"https:\/\/media.licdn.com\/dms\/image\/v2\/D5612AQF9k1PxkPUyGw\/article-inline_image-shrink_1000_1488\/B56Z4GoTuHKoAI-\/0\/1778227693212?e=1779926400&amp;v=beta&amp;t=AzS2vrYeKXudc3OU6r0Yd4oBr-Yrv6kgRyDmLrd4qno\" alt=\"\u6587\u7ae0\u5185\u5bb9\" style=\"aspect-ratio:1.5137628241137688;width:489px;height:auto\"\/><\/figure>\n\n\n\n<p id=\"ember256\">\u2461 H\u00f8jeffektivt termisk styringssystem<\/p>\n\n\n\n<p id=\"ember257\">Bruger v\u00e6skek\u00f8ling, luftk\u00f8ling og andre metoder til at kontrollere batteriets driftstemperatur inden for det optimale omr\u00e5de (typisk 25-40 \u2103), hvilket forhindrer lokal overophedning og undertrykker forekomsten og spredningen af termisk l\u00f8bskhed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"ember258\">Forebyggende foranstaltning 3: Brug i henhold til forskrifterne<\/h3>\n\n\n\n<p id=\"ember259\">Brug originale eller certificerede opladere, og undg\u00e5 overopladning eller overafladning.<\/p>\n\n\n\n<p id=\"ember260\">Undg\u00e5 h\u00f8je temperaturer, luftfugtighed eller direkte sollys.<\/p>\n\n\n\n<p id=\"ember261\">Batteriet m\u00e5 ikke skilles ad, klemmes eller punkteres.<\/p>\n\n\n\n<p id=\"ember262\">Stop brugen med det samme, hvis du bem\u00e6rker nogen unormaliteter s\u00e5som udbuling eller overophedning.<\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>What is battery casing bulging? Definition of Phenomenon During use or storage, gas buildup inside a battery causes increased pressure, leading to expansion and deformation of the casing. Internal Mechanism This is a macroscopic manifestation of an abnormal chemical reaction occurring inside the battery and is one of the important indicators of battery failure. Potential [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2692,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2691","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Analysis of the causes of battery casing bulging and explosion - BOSA lithium battery<\/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:\/\/www.bosaenergy.cn\/da\/analyse-af-arsagerne-til-udbuling-og-eksplosion-af-batterihuset\/\" \/>\n<meta property=\"og:locale\" content=\"da_DK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Analysis of the causes of battery casing bulging and explosion - BOSA lithium battery\" \/>\n<meta property=\"og:description\" content=\"What is battery casing bulging? Definition of Phenomenon During use or storage, gas buildup inside a battery causes increased pressure, leading to expansion and deformation of the casing. Internal Mechanism This is a macroscopic manifestation of an abnormal chemical reaction occurring inside the battery and is one of the important indicators of battery failure. 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