{"id":6045,"date":"2023-05-29T09:48:26","date_gmt":"2023-05-29T01:48:26","guid":{"rendered":"https:\/\/www.ray-tron.com\/?p=6045"},"modified":"2023-09-01T14:08:04","modified_gmt":"2023-09-01T06:08:04","slug":"ele5818","status":"publish","type":"post","link":"https:\/\/www.ray-tron.com\/es\/ele5818\/","title":{"rendered":"Optimizaci\u00f3n del dise\u00f1o de pesta\u00f1as de bater\u00eda cil\u00edndricas"},"content":{"rendered":"<p>La estabilidad c\u00edclica de las bater\u00edas de iones de litio est\u00e1 limitada por mecanismos de envejecimiento a nivel de material, electrodo y celda. Los mecanismos de envejecimiento incluyen la precipitaci\u00f3n de litio, el crecimiento de la interfaz del electrolito s\u00f3lido y la falla del aglutinante del revestimiento del electrodo. El envejecimiento se puede prevenir mediante el control de la temperatura ambiente, protocolos de carga o aditivos electrol\u00edticos. Sin embargo, las celdas cil\u00edndricas de iones de litio tambi\u00e9n tienen un mecanismo de envejecimiento en forma de deformaci\u00f3n mec\u00e1nica dentro del n\u00facleo de la bobina despu\u00e9s del ciclo, y esta deformaci\u00f3n interna a menudo es causada por falta de homogeneidad.<\/p>\n<p>El dise\u00f1o de pesta\u00f1a de las bater\u00edas cil\u00edndricas puede mejorar esta irregularidad interna y la deformaci\u00f3n mec\u00e1nica del n\u00facleo. En general, el recubrimiento de las placas de las bater\u00edas cil\u00edndricas es intermitente, dejando un \u00e1rea en la l\u00e1mina para soldar las pesta\u00f1as, seguida de una cinta. En este momento, el espesor de la pesta\u00f1a de cobre o aluminio soldada suele ser de 100-200 \u03bcm, que es mucho mayor que el espesor de la l\u00e1mina (cobre: \u224810-15 \u03bcm; aluminio: 10-27 \u03bcm) y el espesor del revestimiento del electrodo (\u224835-100 \u03bcm). La pesta\u00f1a relativamente gruesa est\u00e1 soldada en la celda de la bater\u00eda enrollada, lo que puede provocar f\u00e1cilmente la deformaci\u00f3n de la celda de la bater\u00eda enrollada. Adem\u00e1s, el dise\u00f1o de la posici\u00f3n de la pesta\u00f1a tambi\u00e9n es fundamental, ya que afectar\u00e1 directamente la distribuci\u00f3n de la densidad de corriente y la distribuci\u00f3n de la temperatura. Si la densidad de corriente o la distribuci\u00f3n de la temperatura son desiguales, tambi\u00e9n provocar\u00e1n el envejecimiento y falla de la bater\u00eda.<\/p>\n<figure id=\"attachment_6046\" aria-describedby=\"caption-attachment-6046\" style=\"width: 554px\" class=\"wp-caption alignnone\"><img fetchpriority=\"high\" decoding=\"async\" class=\"size-full wp-image-6046 lazyload\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/www.ray-tron.com\/wp-content\/uploads\/2023\/05\/2023052909433824.png\" alt=\"\" width=\"554\" height=\"231\" \/><figcaption id=\"caption-attachment-6046\" class=\"wp-caption-text\"><noscript><img decoding=\"async\" class=\"size-full wp-image-6046 lazyload\" src=\"https:\/\/www.ray-tron.com\/wp-content\/uploads\/2023\/05\/2023052909433824.png\" alt=\"\" width=\"554\" height=\"231\" srcset=\"https:\/\/www.ray-tron.com\/wp-content\/uploads\/2023\/05\/2023052909433824.png 554w, https:\/\/www.ray-tron.com\/wp-content\/uploads\/2023\/05\/2023052909433824-300x125.png 300w\" sizes=\"(max-width: 554px) 100vw, 554px\" \/><\/noscript> (ac) L\u00e1mina de soldadura tradicional y (d, e) l\u00e1mina de aluminio como pesta\u00f1a<\/figcaption><\/figure>\n<p>Por lo tanto, el dise\u00f1o de la pesta\u00f1a debe considerar los dos aspectos siguientes: (1) No introduzca una l\u00e1mina de pesta\u00f1a relativamente gruesa en el n\u00facleo de la bobina, dejando una l\u00e1mina saliente en un extremo de la pesta\u00f1a como pesta\u00f1a, como se muestra en la Figura 1; (2) Dise\u00f1ar m\u00faltiples pesta\u00f1as. El caso extremo es una pesta\u00f1a completa, es decir, la l\u00e1mina en un extremo de la pesta\u00f1a se deja completamente en blanco como la pesta\u00f1a. A continuaci\u00f3n se utilizan 21700 bater\u00edas como ejemplo para ilustrar los efectos de estas dos mejoras.<\/p>\n<p>Como se muestra en la Figura 2, las pesta\u00f1as de soldadura est\u00e1n dise\u00f1adas respectivamente: 1\u27151 (1 pesta\u00f1a positiva, 1 pesta\u00f1a negativa) y 1\u27152 (1 pesta\u00f1a positiva, 2 pesta\u00f1as negativas); Pesta\u00f1as de papel de aluminio: 1\u27151, 1\u27152, 3\u27154 y 101\u2715125 (101 pesta\u00f1as positivas, 125 pesta\u00f1as negativas, similares a las pesta\u00f1as completas).<\/p>\n<figure id=\"attachment_6047\" aria-describedby=\"caption-attachment-6047\" style=\"width: 554px\" class=\"wp-caption alignnone\"><img decoding=\"async\" class=\"size-full wp-image-6047 lazyload\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/www.ray-tron.com\/wp-content\/uploads\/2023\/05\/2023052909435996.png\" alt=\"\" width=\"554\" height=\"402\" \/><figcaption id=\"caption-attachment-6047\" class=\"wp-caption-text\"><noscript><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-6047 lazyload\" src=\"https:\/\/www.ray-tron.com\/wp-content\/uploads\/2023\/05\/2023052909435996.png\" alt=\"\" width=\"554\" height=\"402\" srcset=\"https:\/\/www.ray-tron.com\/wp-content\/uploads\/2023\/05\/2023052909435996.png 554w, https:\/\/www.ray-tron.com\/wp-content\/uploads\/2023\/05\/2023052909435996-300x218.png 300w\" sizes=\"(max-width: 554px) 100vw, 554px\" \/><\/noscript> Figura 2 Dise\u00f1o de pesta\u00f1as: (a) Definici\u00f3n del espaciado de las pesta\u00f1as, (b) Pesta\u00f1as soldadas: 1\u27151 y 1\u27152, (c) Pesta\u00f1as de l\u00e1mina: 1\u27151, 1\u27152, 3\u27154 y 101\u2715125<\/figcaption><\/figure>","protected":false},"excerpt":{"rendered":"<p>\u9502\u79bb\u5b50\u7535\u6c60\u7684\u5faa\u73af\u7a33\u5b9a\u6027\u53d7\u5230\u6750\u6599\u3001\u7535\u6781\u548c\u7535\u6c60\u7ea7\u8001\u5316\u673a\u5236\u7684\u9650\u5236\u3002\u8001\u5316\u673a\u5236\u5305\u62ec\u9502\u6c89\u6dc0\u3001\u56fa\u4f53\u7535\u89e3\u8d28\u754c\u9762\u589e\u957f\u548c\u7535\u6781\u6d82\u5c42\u7684 [&hellip;]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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