{"id":90304,"date":"2026-09-30T13:20:47","date_gmt":"2026-09-30T11:20:47","guid":{"rendered":"https:\/\/energyear.com\/es\/?p=90304"},"modified":"2026-09-30T13:36:32","modified_gmt":"2026-09-30T11:36:32","slug":"battery-rack-baterias-sistema-bess","status":"publish","type":"post","link":"https:\/\/energyear.com\/pt\/diccionario-energetico\/battery-rack-baterias-sistema-bess\/","title":{"rendered":"Battery Rack: o que \u00e9 e como funciona num sistema BESS"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"90304\" class=\"elementor elementor-90304\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-38f1511 e-con-full e-flex e-con e-parent\" data-id=\"38f1511\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t<div class=\"elementor-element elementor-element-85df2b2 e-con-full e-flex e-con e-child\" data-id=\"85df2b2\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b919d29 elementor-widget elementor-widget-heading\" data-id=\"b919d29\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Battery Rack: o que \u00e9 e como funciona num sistema BESS<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3042aa2 elementor-widget elementor-widget-text-editor\" data-id=\"3042aa2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Um Battery Rack, ou rack de baterias, \u00e9 uma estrutura mec\u00e2nica e el\u00e9trica que agrupa v\u00e1rios m\u00f3dulos ou packs de baterias para formar uma unidade de armazenamento com maior tens\u00e3o e capacidade num <span style=\"text-decoration: underline;\"><span style=\"color: #000080;\"><a style=\"color: #000080; text-decoration: underline;\" href=\"https:\/\/energyear.com\/pt\/diccionario-energetico\/bess-battery-energy-storage-system\/\">BESS (Battery Energy Storage System)<\/a><\/span><\/span>.<\/p><p>Num sistema de armazenamento de grande escala, as c\u00e9lulas individuais n\u00e3o s\u00e3o ligadas diretamente ao inversor ou ao sistema el\u00e9trico. S\u00e3o organizadas hierarquicamente em diferentes n\u00edveis (c\u00e9lula, m\u00f3dulo, rack e sistema) at\u00e9 se atingir a tens\u00e3o, a energia e a pot\u00eancia necess\u00e1rias para operar o ativo.<\/p><p>O battery rack constitui, por isso, um dos n\u00edveis fundamentais desta arquitetura. Al\u00e9m de suportar fisicamente os m\u00f3dulos, integra liga\u00e7\u00f5es el\u00e9tricas, monitoriza\u00e7\u00e3o, prote\u00e7\u00f5es e comunica\u00e7\u00f5es que permitem operar o conjunto de baterias de forma coordenada e segura.<\/p><p>Em grandes sistemas <span style=\"text-decoration: underline;\"><span style=\"color: #000080;\"><a style=\"color: #000080; text-decoration: underline;\" href=\"https:\/\/energyear.com\/pt\/diccionario-energetico\/utility-scale-que-significa-y-como-funciona-un-proyecto-energetico-a-gran-escala\/\">Utility Scale<\/a><\/span><\/span>, v\u00e1rios battery racks podem ligar-se a um barramento DC comum e funcionar em conjunto com o PCS (Power Conversion System), que converte a corrente cont\u00ednua das baterias em corrente alternada para a troca de energia com a rede el\u00e9trica.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c97eb15 e-con-full e-flex e-con e-child\" data-id=\"c97eb15\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ea6605c e-con-full e-flex e-con e-parent\" data-id=\"ea6605c\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8a55ad8 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"8a55ad8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Como \u00e9 constitu\u00eddo um Battery Rack?<\/h2><p>A arquitetura exata de um battery rack depende do fabricante, da qu\u00edmica utilizada, da tens\u00e3o do sistema e do projeto geral do BESS. N\u00e3o existe uma configura\u00e7\u00e3o universal.<\/p><p>No entanto, um rack de baterias inclui normalmente v\u00e1rios elementos fundamentais:<\/p><ul><li>M\u00f3dulos de bateria: cont\u00eam grupos de c\u00e9lulas eletroqu\u00edmicas ligadas eletricamente e constituem os blocos b\u00e1sicos que formam o rack.<\/li><li>Estrutura mec\u00e2nica: suporta e fixa os m\u00f3dulos, mantendo as dist\u00e2ncias, a acessibilidade e a resist\u00eancia necess\u00e1rias durante a opera\u00e7\u00e3o.<\/li><li>Barramentos e liga\u00e7\u00f5es DC: ligam eletricamente os diferentes m\u00f3dulos e permitem obter a tens\u00e3o total necess\u00e1ria.<\/li><li>BMS do rack: supervisiona par\u00e2metros como tens\u00e3o, corrente, temperatura, estado de carga (SoC) e diferentes estados de alarme.<\/li><li>Contactores: permitem ligar ou isolar eletricamente o rack em rela\u00e7\u00e3o ao barramento DC do sistema.<\/li><li>Fus\u00edveis e prote\u00e7\u00f5es: fornecem prote\u00e7\u00e3o contra determinadas condi\u00e7\u00f5es de sobrecorrente ou falha el\u00e9trica.<\/li><li>Circuito de pr\u00e9-carga: permite limitar determinadas correntes transit\u00f3rias antes de ligar completamente o rack ao barramento DC.<\/li><li>Sensores: podem monitorizar temperatura, tens\u00e3o, corrente, isolamento ou outros par\u00e2metros relevantes.<\/li><li>Desconex\u00e3o de servi\u00e7o: determinados projetos incluem elementos que permitem isolar o rack durante interven\u00e7\u00f5es de manuten\u00e7\u00e3o.<\/li><\/ul><p>Nos sistemas modernos, toda esta informa\u00e7\u00e3o \u00e9 integrada numa arquitetura de controlo hierarquizada. O BMS de cada m\u00f3dulo comunica com o controlador do rack, que, por sua vez, pode comunicar com um BMS de n\u00edvel superior e com o EMS (Energy Management System).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e2bb04e elementor-widget__width-initial elementor-widget elementor-widget-image\" data-id=\"e2bb04e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1672\" height=\"941\" src=\"https:\/\/energyear.com\/wp-content\/uploads\/2026\/09\/battery-rack-components-bess-energyear.png\" class=\"attachment-full size-full wp-image-90312\" alt=\"Infografia sobre os principais componentes de um Battery Rack num sistema BESS, com m\u00f3dulos, busbars, BMS, contactores, sensores e estrutura\" srcset=\"https:\/\/energyear.com\/wp-content\/uploads\/2026\/09\/battery-rack-components-bess-energyear.png 1672w, https:\/\/energyear.com\/wp-content\/uploads\/2026\/09\/battery-rack-components-bess-energyear-300x169.png 300w, https:\/\/energyear.com\/wp-content\/uploads\/2026\/09\/battery-rack-components-bess-energyear-1024x576.png 1024w, https:\/\/energyear.com\/wp-content\/uploads\/2026\/09\/battery-rack-components-bess-energyear-768x432.png 768w, https:\/\/energyear.com\/wp-content\/uploads\/2026\/09\/battery-rack-components-bess-energyear-1536x864.png 1536w, https:\/\/energyear.com\/wp-content\/uploads\/2026\/09\/battery-rack-components-bess-energyear-600x338.png 600w\" sizes=\"auto, (max-width: 1672px) 100vw, 1672px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Um Battery Rack integra m\u00f3dulos de bateria, liga\u00e7\u00f5es el\u00e9tricas, sistemas de controlo, prote\u00e7\u00f5es e comunica\u00e7\u00f5es na arquitetura de um BESS.<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0fc15a1 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"0fc15a1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Da c\u00e9lula ao BESS: Cell, Module, Rack e Container<\/h2><p>Para compreender o que \u00e9 um battery rack, \u00e9 \u00fatil analisar como se constr\u00f3i um sistema de armazenamento a partir do seu elemento mais pequeno.<\/p><p>A arquitetura habitual pode ser representada assim:<\/p><p style=\"text-align: center; font-size: 21px;\">C\u00e9lula \u2192 M\u00f3dulo \/ Pack \u2192 Battery Rack \u2192 Sistema de baterias \u2192 BESS<\/p><h3>C\u00e9lula de bateria<\/h3><p>A c\u00e9lula \u00e9 a unidade eletroqu\u00edmica b\u00e1sica. Numa bateria de i\u00f5es de l\u00edtio, \u00e9 nela que a energia \u00e9 fisicamente armazenada e libertada atrav\u00e9s de rea\u00e7\u00f5es eletroqu\u00edmicas revers\u00edveis.<\/p><h3>M\u00f3dulo de bateria<\/h3><p>V\u00e1rias c\u00e9lulas s\u00e3o ligadas entre si para formar um m\u00f3dulo de bateria. Consoante o projeto, podem ser ligadas em s\u00e9rie, em paralelo ou atrav\u00e9s de uma combina\u00e7\u00e3o das duas configura\u00e7\u00f5es.<\/p><p>O m\u00f3dulo facilita a montagem, a monitoriza\u00e7\u00e3o, a manuten\u00e7\u00e3o e o fabrico do sistema completo.<\/p><h3>Battery Rack<\/h3><p>V\u00e1rios m\u00f3dulos s\u00e3o integrados num battery rack. Em muitos sistemas estacion\u00e1rios de alta tens\u00e3o, os m\u00f3dulos s\u00e3o ligados principalmente em s\u00e9rie dentro do rack para atingir a tens\u00e3o DC de opera\u00e7\u00e3o necess\u00e1ria.<\/p><h3>Arm\u00e1rio de baterias ou contentor<\/h3><p>Um ou v\u00e1rios racks podem ser instalados num arm\u00e1rio de baterias, sala t\u00e9cnica ou contentor.<\/p><p>\u00c9 importante n\u00e3o utilizar estes conceitos como sin\u00f3nimos. Um battery rack \u00e9 a estrutura que agrupa eletricamente os m\u00f3dulos, enquanto um arm\u00e1rio ou contentor \u00e9 o recinto f\u00edsico que pode alojar racks juntamente com climatiza\u00e7\u00e3o, prote\u00e7\u00e3o contra inc\u00eandios, comunica\u00e7\u00f5es e outros sistemas auxiliares.<\/p><p>A terminologia concreta pode variar entre fabricantes, sobretudo no uso de palavras como module, pack, cluster, rack ou string, pelo que se deve sempre verificar a arquitetura definida por cada OEM.<\/p><h2>Como s\u00e3o ligados os m\u00f3dulos dentro de um Battery Rack?<\/h2><p>Uma das principais fun\u00e7\u00f5es do battery rack \u00e9 atingir a tens\u00e3o DC necess\u00e1ria para que o sistema opere de forma eficiente com o PCS. Quando m\u00f3dulos id\u00eanticos s\u00e3o ligados em s\u00e9rie, as suas tens\u00f5es somam-se, enquanto a capacidade expressa em Ah permanece aproximadamente igual.<\/p><p style=\"text-align: center; font-size: 20px;\">V<sub>rack<\/sub> = N<sub>series<\/sub> \u00d7 V<sub>module<\/sub><\/p><p>A energia nominal pode ser calculada de forma simplificada como:<\/p><p style=\"text-align: center; font-size: 20px;\">E<sub>rack<\/sub> = V<sub>rack<\/sub> \u00d7 Ah \/ 1.000<\/p><p>onde:<\/p><ul><li>E<sub>rack<\/sub> = energia nominal do rack em kWh.<\/li><li>V<sub>rack<\/sub> = tens\u00e3o nominal do rack.<\/li><li>Ah = capacidade nominal em amperes-hora.<\/li><\/ul><h3>Exemplo de capacidade de um Battery Rack<\/h3><p>Suponhamos, apenas como exemplo did\u00e1tico, que um rack inclui 16 m\u00f3dulos ligados em s\u00e9rie e que cada m\u00f3dulo tem:<\/p><ul><li>Tens\u00e3o nominal: 51,2 V.<\/li><li>Capacidade: 280 Ah.<\/li><\/ul><p>A tens\u00e3o nominal do rack seria:<\/p><p style=\"text-align: center; font-size: 20px;\">16 \u00d7 51,2 V = 819,2 V<\/p><p>E a sua energia nominal aproximada:<\/p><p style=\"text-align: center; font-size: 20px;\">819,2 V \u00d7 280 Ah \/ 1.000 = 229,4 kWh<\/p><p>Esse battery rack teria, portanto, aproximadamente 229 kWh de energia nominal. Isto n\u00e3o significa que toda essa energia possa ser utilizada em quaisquer condi\u00e7\u00f5es. A energia \u00fatil depender\u00e1 de par\u00e2metros como o intervalo operativo de SoC, a profundidade de descarga, a temperatura, a degrada\u00e7\u00e3o, os limites de corrente e a estrat\u00e9gia definida pelo BMS.<\/p><h2>Battery Racks em s\u00e9rie e em paralelo<\/h2><p>A diferen\u00e7a entre liga\u00e7\u00f5es em s\u00e9rie e em paralelo \u00e9 fundamental para compreender a arquitetura el\u00e9trica de um BESS. Dentro de um rack, \u00e9 frequente utilizar liga\u00e7\u00f5es em s\u00e9rie para aumentar a tens\u00e3o. Posteriormente, v\u00e1rios racks podem ser ligados em paralelo a um barramento DC para aumentar a capacidade energ\u00e9tica e a corrente dispon\u00edvel para o sistema. De forma simplificada:<\/p><ul><li>Liga\u00e7\u00e3o em s\u00e9rie \u2192 aumenta a tens\u00e3o.<\/li><li>Liga\u00e7\u00e3o em paralelo \u2192 aumenta a capacidade e a corrente dispon\u00edvel.<\/li><\/ul><p>Por exemplo, se cada rack tiver 229 kWh e um sistema integrar 20 racks equivalentes, a energia nominal agregada seria aproximadamente:<\/p><p style=\"text-align: center; font-size: 20px;\">20 \u00d7 229,4 kWh = 4.588 kWh \u2248 4,59 MWh<\/p><p>Na pr\u00e1tica, a arquitetura el\u00e9trica deve tamb\u00e9m analisar os limites de corrente, as prote\u00e7\u00f5es, a cablagem, a queda de tens\u00e3o, a coordena\u00e7\u00e3o do BMS e as caracter\u00edsticas do PCS.<\/p><h2>O que faz o BMS dentro de um Battery Rack?<\/h2><p>O Battery Management System \u00e9 um dos elementos fundamentais do battery rack. A sua fun\u00e7\u00e3o n\u00e3o se limita a mostrar a percentagem de bateria dispon\u00edvel. O BMS supervisiona continuamente as condi\u00e7\u00f5es el\u00e9tricas e t\u00e9rmicas das c\u00e9lulas e dos m\u00f3dulos para manter o sistema dentro dos seus limites de funcionamento. Entre os par\u00e2metros e as fun\u00e7\u00f5es habituais encontram-se:<\/p><ul><li>Tens\u00e3o individual das c\u00e9lulas.<\/li><li>Tens\u00e3o total do m\u00f3dulo e do rack.<\/li><li>Corrente de carga e descarga.<\/li><li>Temperaturas.<\/li><li>Estado de carga (SoC).<\/li><li>Estado de sa\u00fade (SoH).<\/li><li>Equil\u00edbrio das c\u00e9lulas.<\/li><li>Dete\u00e7\u00e3o de condi\u00e7\u00f5es an\u00f3malas.<\/li><li>Gest\u00e3o dos contactores.<\/li><li>Comunica\u00e7\u00e3o com sistemas de n\u00edvel superior.<\/li><\/ul><p>Uma diferen\u00e7a excessiva entre c\u00e9lulas pode limitar o desempenho de todo o rack. Se uma c\u00e9lula atingir o seu limite superior ou inferior de tens\u00e3o antes das restantes, o BMS poder\u00e1 ter de limitar a carga ou descarga do conjunto. Por isso, o desempenho de um battery rack n\u00e3o depende apenas da sua capacidade nominal. Depende tamb\u00e9m da uniformidade e do estado das suas c\u00e9lulas.<\/p><h2>Battery Rack, PCS e barramento DC: como flui a energia<\/h2><p>Num BESS de grande escala, os battery racks constituem a parte eletroqu\u00edmica do sistema, mas precisam de ser integrados com diferentes equipamentos para poderem trocar energia com a rede. De forma simplificada, o fluxo el\u00e9trico pode ser representado assim:<\/p><p style=\"text-align: center; font-size: 20px;\">C\u00e9lulas de bateria \u2192 M\u00f3dulos \u2192 Racks \u2192 Barramento DC \u2192 PCS \u2192 Transformador \u2192 Rede<\/p><p>Durante a descarga, a energia armazenada nos racks circula atrav\u00e9s do barramento DC at\u00e9 ao PCS, que transforma a corrente cont\u00ednua em corrente alternada. Durante a carga ocorre o processo inverso: o PCS recebe corrente alternada da rede e converte-a em corrente cont\u00ednua para carregar os battery racks. O EMS coordena quando e quanto o sistema deve carregar ou descarregar, de acordo com a estrat\u00e9gia operacional do ativo.<\/p><p>Em aplica\u00e7\u00f5es como arbitragem de energia, servi\u00e7os de regula\u00e7\u00e3o, <a href=\"https:\/\/energyear.com\/pt\/diccionario-energetico\/peak-shaving-reduccion-picos-demanda-electrica\/\"><span style=\"text-decoration: underline;\"><span style=\"color: #000080; text-decoration: underline;\">Peak Shaving<\/span><\/span><\/a> ou integra\u00e7\u00e3o de energias renov\u00e1veis, esta coordena\u00e7\u00e3o pode alterar-se constantemente em fun\u00e7\u00e3o dos pre\u00e7os, das instru\u00e7\u00f5es da rede e do estado da bateria.<\/p><h2>Seguran\u00e7a e prote\u00e7\u00e3o de um Battery Rack<\/h2><p>Um battery rack pode funcionar com tens\u00f5es DC elevadas e grandes quantidades de energia armazenada, pelo que o seu projeto deve considerar os riscos el\u00e9tricos, eletroqu\u00edmicos e t\u00e9rmicos. A <span style=\"text-decoration: underline;\"><span style=\"color: #000080;\"><a style=\"color: #000080; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" href=\"https:\/\/webstore.iec.ch\/en\/publication\/64073\" target=\"_blank\" rel=\"noopener noreferrer\">IEC 62619<\/a><\/span><\/span> estabelece requisitos de seguran\u00e7a para c\u00e9lulas e baterias secund\u00e1rias de l\u00edtio utilizadas em aplica\u00e7\u00f5es industriais, incluindo sistemas estacion\u00e1rios de armazenamento.<\/p><p>A <span style=\"text-decoration: underline; color: #000080;\"><a style=\"color: #000080; text-decoration: underline;\" href=\"https:\/\/webstore.iec.ch\/en\/publication\/29224\" target=\"_blank\" rel=\"noopener noreferrer\">IEC 63056<\/a><\/span> estabelece requisitos adicionais de seguran\u00e7a para c\u00e9lulas e baterias de l\u00edtio utilizadas especificamente em sistemas de armazenamento de energia el\u00e9trica e abrange sistemas com tens\u00e3o nominal DC at\u00e9 1.500 V. Entre os elementos que podem contribuir para a seguran\u00e7a de um rack encontram-se:<\/p><ul><li>BMS e monitoriza\u00e7\u00e3o cont\u00ednua.<\/li><li>Fus\u00edveis e prote\u00e7\u00f5es el\u00e9tricas.<\/li><li>Contactores de isolamento.<\/li><li>Monitoriza\u00e7\u00e3o do isolamento.<\/li><li>Monitoriza\u00e7\u00e3o da temperatura.<\/li><li>Sistemas de climatiza\u00e7\u00e3o.<\/li><li>Dete\u00e7\u00e3o de gases ou fumo, consoante o projeto.<\/li><li>Sistemas de dete\u00e7\u00e3o e prote\u00e7\u00e3o contra inc\u00eandios ao n\u00edvel da instala\u00e7\u00e3o.<\/li><\/ul><p>Um dos riscos espec\u00edficos das baterias de i\u00f5es de l\u00edtio \u00e9 o thermal runaway, ou fuga t\u00e9rmica, uma condi\u00e7\u00e3o em que determinadas rea\u00e7\u00f5es internas podem provocar um aumento r\u00e1pido e autossustentado da temperatura. O projeto do sistema deve considerar n\u00e3o s\u00f3 como reduzir a probabilidade de ocorr\u00eancia de uma falha, mas tamb\u00e9m como evitar ou limitar a sua propaga\u00e7\u00e3o entre c\u00e9lulas, m\u00f3dulos, racks e outros elementos do BESS.<\/p><p>A norma <span style=\"text-decoration: underline; color: #000080;\"><a style=\"color: #000080; text-decoration: underline;\" href=\"https:\/\/webstore.iec.ch\/en\/publication\/110836\" target=\"_blank\" rel=\"noopener noreferrer\">IEC 62933-5-2<\/a><\/span> aborda a seguran\u00e7a dos sistemas de armazenamento eletroqu\u00edmico integrados na rede numa perspetiva de sistema e considera as intera\u00e7\u00f5es entre os seus diferentes subsistemas.<\/p><h2>Que par\u00e2metros definem o desempenho de um Battery Rack?<\/h2><p>Comparar battery racks apenas pelos seus kWh pode levar a conclus\u00f5es incompletas. Para avaliar corretamente um rack, devem analisar-se em conjunto diferentes par\u00e2metros t\u00e9cnicos.<\/p><ul><li>Energia nominal (kWh): quantidade te\u00f3rica de energia armazenada.<\/li><li>Energia \u00fatil (kWh): energia efetivamente dispon\u00edvel dentro da janela operacional estabelecida.<\/li><li>Tens\u00e3o nominal (V): tens\u00e3o de refer\u00eancia do conjunto.<\/li><li>Intervalo de tens\u00e3o: valores m\u00ednimo e m\u00e1ximo durante a carga e descarga.<\/li><li>Capacidade (Ah): quantidade de carga el\u00e9trica armazenada.<\/li><li>Corrente m\u00e1xima: condiciona a pot\u00eancia m\u00e1xima que o rack pode fornecer ou absorver.<\/li><li>C-rate: rela\u00e7\u00e3o entre pot\u00eancia\/corrente e capacidade energ\u00e9tica da bateria.<\/li><li>DoD: profundidade de descarga permitida.<\/li><li>Efici\u00eancia: perdas durante os ciclos de carga e descarga.<\/li><li>SoH: estado de sa\u00fade da bateria relativamente \u00e0 sua condi\u00e7\u00e3o inicial.<\/li><li>Ciclos e degrada\u00e7\u00e3o: evolu\u00e7\u00e3o da capacidade e da resist\u00eancia interna com a utiliza\u00e7\u00e3o e o tempo.<\/li><li>Temperatura de funcionamento: influencia o desempenho, o envelhecimento e a seguran\u00e7a.<\/li><\/ul><p>Al\u00e9m disso, a pot\u00eancia m\u00e1xima do BESS n\u00e3o pode ser determinada observando apenas o battery rack. Tamb\u00e9m \u00e9 condicionada pelo n\u00famero de racks ligados, pelos limites do BMS, pelo barramento DC, pelo PCS, pelo transformador e pelas restri\u00e7\u00f5es de liga\u00e7\u00e3o do projeto.<\/p><h2>Battery Rack e degrada\u00e7\u00e3o de um BESS<\/h2><p>A degrada\u00e7\u00e3o de um BESS ocorre ao n\u00edvel da c\u00e9lula, mas os seus efeitos acabam por se manifestar ao n\u00edvel do m\u00f3dulo, do rack e do sistema completo. Habitualmente, distinguem-se dois mecanismos:<\/p><ul><li>Calendar ageing: degrada\u00e7\u00e3o causada pela passagem do tempo, mesmo quando a bateria n\u00e3o est\u00e1 a realizar ciclos.<\/li><li>Cycle ageing: degrada\u00e7\u00e3o relacionada com os ciclos de carga e descarga.<\/li><\/ul><p>Fatores como a temperatura, o SoC m\u00e9dio, a profundidade de descarga, a corrente e a frequ\u00eancia dos ciclos afetam a velocidade de degrada\u00e7\u00e3o. Em sistemas com muitos battery racks tamb\u00e9m pode ocorrer rack-to-rack imbalance, ou seja, diferen\u00e7as de capacidade, resist\u00eancia ou SoC entre os v\u00e1rios racks.<\/p><p>Uma estrat\u00e9gia adequada de <span style=\"text-decoration: underline;\"><span style=\"color: #000080;\"><a style=\"color: #000080; text-decoration: underline;\" href=\"https:\/\/energyear.com\/pt\/diccionario-energetico\/om-operacion-mantenimiento-energias-renovables\/\">O&amp;M<\/a><\/span><\/span> e monitoriza\u00e7\u00e3o permite identificar desvios de temperatura, tens\u00e3o ou desempenho antes de provocarem perdas significativas de disponibilidade ou capacidade. Por este motivo, a an\u00e1lise de dados ao n\u00edvel do rack constitui uma ferramenta fundamental para avaliar o estado t\u00e9cnico e econ\u00f3mico de um BESS durante toda a sua vida \u00fatil.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a539dba elementor-widget__width-initial elementor-widget elementor-widget-post-info\" data-id=\"a539dba\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"post-info.default\">\n\t\t\t\t\t\t\t<ul class=\"elementor-inline-items elementor-icon-list-items elementor-post-info\">\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-5e5f915 elementor-inline-item\" itemprop=\"about\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-tags\"><\/i>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-terms\">\n\t\t\t\t\t\t\t<span class=\"elementor-post-info__item-prefix\">Tags:<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-post-info__terms-list\">\n\t\t\t\t<a href=\"https:\/\/energyear.com\/pt\/tag\/almacenamiento-energetico\/\" class=\"elementor-post-info__terms-list-item\">armazenamentos de energia<\/a>, <a href=\"https:\/\/energyear.com\/pt\/tag\/baterias-de-litio\/\" class=\"elementor-post-info__terms-list-item\">baterias de l\u00edtio<\/a>, <a href=\"https:\/\/energyear.com\/pt\/tag\/battery-module\/\" class=\"elementor-post-info__terms-list-item\">M\u00f3dulo de bateria<\/a>, <a href=\"https:\/\/energyear.com\/pt\/tag\/battery-rack\/\" class=\"elementor-post-info__terms-list-item\">Battery Rack<\/a>, <a href=\"https:\/\/energyear.com\/pt\/tag\/bess\/\" class=\"elementor-post-info__terms-list-item\">BESS<\/a>, <a href=\"https:\/\/energyear.com\/pt\/tag\/bms\/\" class=\"elementor-post-info__terms-list-item\">BMS<\/a>, <a href=\"https:\/\/energyear.com\/pt\/tag\/energy-storage\/\" class=\"elementor-post-info__terms-list-item\">energy storage<\/a>, <a href=\"https:\/\/energyear.com\/pt\/tag\/rack-de-baterias\/\" class=\"elementor-post-info__terms-list-item\">battery rack<\/a>\t\t\t\t<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Un Battery Rack agrupa m\u00f3dulos de bater\u00eda para alcanzar la tensi\u00f3n y capacidad necesarias dentro de un BESS. Descubre su arquitectura, componentes, conexi\u00f3n el\u00e9ctrica, BMS, seguridad y diferencias frente a m\u00f3dulos, cabinets y containers.<\/p>","protected":false},"author":14,"featured_media":90309,"comment_status":"open","ping_status":"open","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"_acf_changed":false,"content-type":"","footnotes":""},"categories":[178],"tags":[183,316,314,312,179,315,317,313],"class_list":["post-90304","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-diccionario-energetico","tag-almacenamiento-energetico","tag-baterias-de-litio","tag-battery-module","tag-battery-rack","tag-bess","tag-bms","tag-energy-storage","tag-rack-de-baterias"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Battery Rack: qu\u00e9 es y c\u00f3mo funciona en un sistema BESS - Energyear<\/title>\n<meta name=\"description\" content=\"Descubre qu\u00e9 es un Battery Rack, c\u00f3mo se conectan sus m\u00f3dulos, qu\u00e9 funci\u00f3n tiene el BMS y c\u00f3mo se integra dentro de un sistema BESS de almacenamiento.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/energyear.com\/pt\/diccionario-energetico\/battery-rack-baterias-sistema-bess\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Battery Rack: qu\u00e9 es y c\u00f3mo funciona en un sistema BESS - 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