{"id":57599,"date":"2022-11-15T14:19:48","date_gmt":"2022-11-15T14:19:48","guid":{"rendered":"https:\/\/www.takomabattery.com\/?p=57599"},"modified":"2023-11-28T09:38:36","modified_gmt":"2023-11-28T09:38:36","slug":"battery-thermal-runaway","status":"publish","type":"post","link":"https:\/\/www.takomabattery.com\/fr\/battery-thermal-runaway\/","title":{"rendered":"Processus et mesures pr\u00e9ventives de l'emballement thermique des batteries"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"57599\" class=\"elementor elementor-57599\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-dbce637 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"dbce637\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-878bc18\" data-id=\"878bc18\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2c0e556 elementor-widget elementor-widget-woocommerce-breadcrumb\" data-id=\"2c0e556\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"woocommerce-breadcrumb.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<nav class=\"woocommerce-breadcrumb\" aria-label=\"Breadcrumb\">Accueil<\/nav>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-311ece6 elementor-widget elementor-widget-heading\" data-id=\"311ece6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Process and preventive measures of battery thermal runaway<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-79f7857 elementor-widget elementor-widget-text-editor\" data-id=\"79f7857\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div style=\"line-height: 40px\"><strong>Battery thermal runaway<\/strong> refers to a phenomenon in which the pressure of the battery cell increases and the temperature rises due to multiple reasons. If the excess heat of the battery is not dissipated in time, and the heat accumulates to a certain extent inside the battery, dangerous situations such as smoke and fire will occur.<\/div><div>\u00a0<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-81ecdb3 elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"81ecdb3\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;headings_by_tags&quot;:[&quot;h2&quot;,&quot;h3&quot;,&quot;h4&quot;],&quot;exclude_headings_by_selector&quot;:&quot;.paichu_post&quot;,&quot;marker_view&quot;:&quot;numbers&quot;,&quot;no_headings_message&quot;:&quot;No headings were found on this page.&quot;,&quot;minimize_box&quot;:&quot;yes&quot;,&quot;minimized_on&quot;:&quot;tablet&quot;,&quot;hierarchical_view&quot;:&quot;yes&quot;,&quot;min_height&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"table-of-contents.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__header\">\n\t\t\t\t\t\t<div class=\"elementor-toc__header-title\">\n\t\t\t\tTable of Contents\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--expand\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__81ecdb3\" aria-expanded=\"true\" aria-label=\"Open table of contents\"><i aria-hidden=\"true\" class=\"fas fa-chevron-down\"><\/i><\/div>\n\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--collapse\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__81ecdb3\" aria-expanded=\"true\" aria-label=\"Close table of contents\"><i aria-hidden=\"true\" class=\"fas fa-chevron-up\"><\/i><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<div id=\"elementor-toc__81ecdb3\" class=\"elementor-toc__body\">\n\t\t\t<div class=\"elementor-toc__spinner-container\">\n\t\t\t\t<i class=\"elementor-toc__spinner eicon-animation-spin eicon-loading\" aria-hidden=\"true\"><\/i>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c46aefe uael-aspect-ratio-16_9 uael-youtube-subscribe-no elementor-widget elementor-widget-uael-video\" data-id=\"c46aefe\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"uael-video.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"uael-video__outer-wrap  uael-video-type-youtube\" data-device=\"false\" data-vsticky=\"no\" data-hidedesktop=\"\" data-hidetablet=\"\" data-hidemobile=\"\" data-vsticky-viewport=\"0\" data-autoplay=\"0\">\n\t\t\t\t\t\t<div class=\"uael-video-inner-wrap\">\n\t\t\t\t<div class=\"uael-video__play\" data-src=\"https:\/\/www.youtube.com\/embed\/Tm-Y6S0t1HE?rel=0&amp;start&amp;end&amp;controls=1&amp;mute=0&amp;modestbranding=0&amp;autoplay=1\">\n\t\t\t\t\t<img decoding=\"async\" class=\"uael-video__thumb\" src=\"https:\/\/i.ytimg.com\/vi\/Tm-Y6S0t1HE\/hqdefault.jpg\" alt=\"\"><\/img>\n\t\t\t\t\t<div class=\"uael-video__play-icon uael-animation-\">\n\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.takomabattery.com\/wp-content\/uploads\/2023\/07\/YouTube_play_button_icon_2013\u20132017.svg-21.webp\" alt=\"youtube play button\" \/>\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-629db5e elementor-widget elementor-widget-text-editor\" data-id=\"629db5e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div style=\"line-height: 40px\"><p>The problem of battery thermal runaway must be taken seriously. While the battery itself is constantly releasing heat and has difficulty dissipating it, thermal runaway can be prevented with proper measures and careful maintenance.<\/p><h2 id=\"Battery-thermal-runaway-process\">Battery thermal runaway process<\/h2><p>Battery thermal runaway is caused by the fact that the heat generation rate of the battery is much higher than the heat dissipation rate, and a large amount of heat is accumulated and not dissipated in time. Essentially, thermal runaway is an energy-positive feedback loop process: increased temperature causes the system to heat up, which in turn makes the system hotter. Without strict division, battery thermal runaway can be divided into three stages:<\/p><p><strong><span style=\"color: #808000\">\u25cf<\/span> Thermal runaway phase inside the battery<\/strong><\/p><p>Due to internal short circuit, external heating, or self-heating of the battery itself during high current charging and discharging, the internal temperature of the battery rises to about 90\u00b0C to 100\u00b0C, and the lithium salt LiPF6 begins to decompose. The chemical activity of the carbon anode in the charged state is very high, close to metallic lithium, and the SEI film on the surface decomposes at high temperature, and the lithium ions embedded in the graphite react with the electrolyte and the binder, further pushing the battery temperature to 150 \u00b0C.<\/p><p>At this temperature, a new violent exothermic reaction occurs, for example, a large amount of electrolyte is decomposed to generate PF5, and PF5 further catalyzes the decomposition reaction of organic solvents.<\/p><p><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter size-full wp-image-57608\" src=\"https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/11\/Battery-thermal-runaway-process.jpg\" alt=\"Battery thermal runaway process\" width=\"1000\" height=\"361\" srcset=\"https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/11\/Battery-thermal-runaway-process.jpg 1000w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/11\/Battery-thermal-runaway-process-300x108.jpg 300w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/11\/Battery-thermal-runaway-process-768x277.jpg 768w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/11\/Battery-thermal-runaway-process-600x217.jpg 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/p><p><strong><span style=\"color: #808000\">\u25cf <\/span>Battery swollen stage<\/strong><\/p><p>When the temperature of the battery reaches above 200\u00b0C, the cathode material decomposes, releasing a large amount of heat and gas, and the temperature continues to rise. That will causes <span style=\"text-decoration: underline\"><span style=\"color: #333399;text-decoration: underline\"><a style=\"color: #333399;text-decoration: underline\" href=\"https:\/\/www.takomabattery.com\/is-a-swollen-battery-dangerous-the-complete-guide-to-dealing-with-a-swollen-battery\/\" target=\"_blank\" rel=\"noopener\">swollen battery<\/a><\/span><\/span>. At 250-350\u00b0C, the lithium intercalated anode begins to react with the electrolyte.<\/p><p><strong><span style=\"color: #808000\">\u25cf <\/span>Battery thermal runaway, explosion failure stage<\/strong><\/p><p>During the reaction process, the charged cathode material begins to undergo a violent decomposition reaction, and the electrolyte undergoes a violent oxidation reaction, releasing a large amount of heat, generating high temperature and a large amount of gas, and the battery will burn and explode.<\/p><h2 id=\"Battery-thermal-runaway-characteristic-parameters-and-early-warning\">Battery thermal runaway characteristic parameters and early warning<\/h2><p>Regarding the early warning of battery thermal runaway, it is mainly to monitor and warn the battery for the critical condition of battery thermal runaway. By monitoring one or several characteristic parameters and characteristic gases, the battery thermal runaway can be effectively pre-warned, so as to avoid the large economic loss caused by thermal runaway.<\/p><h4 id=\"Temperature\">Temperature<\/h4><p>The battery early warning system uses temperature detectors to monitor the temperature. When the temperature exceeds the critical temperature, an early warning message is issued for early warning. For the law of heat production of <span style=\"text-decoration: underline\"><span style=\"color: #333399;text-decoration: underline\"><a style=\"color: #333399;text-decoration: underline\" href=\"https:\/\/www.takomabattery.com\/14500-vs-18650-batteries-when-and-how-to-use-each-type\/\" target=\"_blank\" rel=\"noopener\">18650 batteries<\/a><\/span><\/span> at different magnifications, a three-level early warning scheme was determined, with 50 \u00b0C as the first-level early warning temperature, 70 \u00b0C as the second-level early-warning temperature, and 80 \u00b0C as the third-level early warning temperature.<\/p><h4 id=\"Internal-resistance\">Internal resistance<\/h4><p>Usually the battery is within the normal working temperature range, and the internal resistance of the battery decreases as the temperature increases, but when the battery exceeds the normal working range or even battery thermal runaway occurs, the internal resistance of the battery will increase significantly.<\/p><p><img decoding=\"async\" class=\"aligncenter size-full wp-image-57609\" src=\"https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/11\/Battery-thermal-runaway-characteristic-parameters-and-early-warning.jpg\" alt=\"Battery thermal runaway characteristic parameters and early warning\" width=\"1000\" height=\"576\" srcset=\"https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/11\/Battery-thermal-runaway-characteristic-parameters-and-early-warning.jpg 1000w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/11\/Battery-thermal-runaway-characteristic-parameters-and-early-warning-300x173.jpg 300w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/11\/Battery-thermal-runaway-characteristic-parameters-and-early-warning-768x442.jpg 768w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/11\/Battery-thermal-runaway-characteristic-parameters-and-early-warning-600x346.jpg 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/p><p>Considering that the sudden change in the internal resistance of the battery is not necessarily caused by the battery thermal runaway, and the battery is subject to external disturbances resulting in poor contact, the internal resistance will also change.<\/p><h4 id=\"Voltage\">Voltage<\/h4><p>The process of voltage drop in different triggering methods is different. But in fact, the change of the voltage of the battery is very complex and the regularity is poor, and when the voltage drops sharply, the battery usually fails, and thermal runaway has occurred at this time. In addition to the battery thermal runaway, sometimes the battery has poor contact, which will also cause the battery voltage to suddenly change.<\/p><h4 id=\"Characteristic-gases-and-smoke\">Characteristic gases and smoke<\/h4><p>The battery produces CO, H2, HF, various hydrocarbons, etc. during the thermal runaway process. The appearance of these characteristic gases will lead to a rapid increase in the concentration of the gases in the surrounding environment. Using corresponding sensors to monitor these gases and smoke is also an important monitoring method for battery thermal runaway.<\/p><h2 id=\"Causes-of-UPS-battery-thermal-runaway\">Causes of UPS battery thermal runaway<\/h2><p>There are many reasons for UPS batteries thermal runaway. High charging voltage and large gas evolution will cause battery thermal runaway. If a single-cell battery in the battery pack suffers from severe battery thermal runaway, but the constant voltage value of charging remains unchanged, the charging voltage of other single-cell batteries will also be relatively high, resulting in thermal runaway problems. The specific analysis is as follows:<\/p><p><strong><span style=\"color: #808000\">\u25cf <\/span>Difficulty in heat dissipation due to compact assembly<\/strong><\/p><p>For compact batteries, the electrolyte is stored in porous separators, which makes it difficult to dissipate heat. Unlike ordinary lead-acid batteries, it can stir the electrolyte during charging and gas evolution, which is conducive to heat dissipation. When there is a partial short circuit inside the battery, the battery temperature will rise even higher.<\/p><p><strong><span style=\"color: #808000\">\u25cf <\/span>The temperature is high and the float current will increase in summer<\/strong><\/p><p>If the float voltage is not lowered in time, the temperature of the battery will rise rapidly. The charging voltage is too high, and the gas evolution is too large, resulting in excess oxygen circulation. If there is a micro-short circuit in one of the batteries in the battery pack, it is also equivalent to increasing the charging voltage.<\/p><p><img decoding=\"async\" class=\"aligncenter size-full wp-image-57610\" src=\"https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/11\/Causes-of-UPS-battery-thermal-runaway.jpg\" alt=\"Causes of UPS battery thermal runaway\" width=\"1000\" height=\"799\" srcset=\"https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/11\/Causes-of-UPS-battery-thermal-runaway.jpg 1000w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/11\/Causes-of-UPS-battery-thermal-runaway-300x240.jpg 300w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/11\/Causes-of-UPS-battery-thermal-runaway-768x614.jpg 768w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/11\/Causes-of-UPS-battery-thermal-runaway-600x479.jpg 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/p><p><strong><span style=\"color: #808000\">\u25cf <\/span>Safety valve is not tight or valve opening pressure is too low<\/strong><\/p><p>The phenomenon of battery thermal runaway is very typical. The direct consequence of battery thermal runaway is that the internal electrolyte of the UPS battery dries up, the internal resistance of the UPS battery is abnormal, the battery case is deformed and expanded, or even ruptures, and a large amount of acid gas is emitted.<\/p><p>Battery fire and explosion are the most common thermal runaway hazards in power battery systems, and the impact is even more serious. It will not only cause property damage and environmental damage, but even cause personal injury or life danger.<\/p><h2 id=\"How-to-prevent-battery-thermal-runaway-and-prevention-measures\">How to prevent battery thermal runaway and prevention measures<\/h2><p><span style=\"text-decoration: underline\"><span style=\"color: #333399;text-decoration: underline\"><a style=\"color: #333399;text-decoration: underline\" href=\"https:\/\/www.takomabattery.com\/ups-lithium-battery-ultimate-faq-guide\/\" target=\"_blank\" rel=\"noopener\">UPS lithium battery<\/a><\/span><\/span> thermal runaway means that when the battery is charged at constant voltage, the charging current and the temperature of the UPS battery have a cumulative enhancement effect, and gradually damage the battery. The battery thermal runaway of the battery will cause the battery to lose water rapidly, and the electrolyte in the diaphragm will dry up quickly, and eventually the battery will fail. The following steps can effectively prevent UPS battery thermal runaway:<\/p><p>\u25cf Charging equipment should have temperature compensation function or current limit;<\/p><p>\u25cf Strictly control the quality of the safety valve, so that the gas inside the battery can be discharged normally;<\/p><p>\u25cf The UPS battery should be set in a well-ventilated location, and the temperature of the UPS battery should be controlled.<\/p><p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-57611\" src=\"https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/11\/How-to-prevent-battery-thermal-runaway-and-prevention-measures.jpg\" alt=\"How to prevent battery thermal runaway and prevention measures\" width=\"1000\" height=\"288\" srcset=\"https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/11\/How-to-prevent-battery-thermal-runaway-and-prevention-measures.jpg 1000w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/11\/How-to-prevent-battery-thermal-runaway-and-prevention-measures-300x86.jpg 300w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/11\/How-to-prevent-battery-thermal-runaway-and-prevention-measures-768x221.jpg 768w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/11\/How-to-prevent-battery-thermal-runaway-and-prevention-measures-600x173.jpg 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/p><p>All in all, we can do the followings to prevent battery thermal runaway:<\/p><p>\u25cf Correct selection and timely adjustment of float voltage.<\/p><p>\u25cf The oxygen recombination reaction is carried out on the anode, so the temperature of the anode is the highest. Furthermore, the poles and grids are metal, which are good conductors of heat. They are definitely more sensitive to the temperature increase of the battery than the outer casing. Therefore, the temperature of the anode should be continuously monitored during charging. Especially in summer or noon, pay special attention to whether the battery temperature rises.<\/p><p>\u25cf The charging equipment should have temperature compensation and current limiting functions.<\/p><p>\u25cf Strictly control the quality of the safety valve to avoid failure and ensure the normal discharge of gas inside the battery.<\/p><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5473c49 elementor-widget elementor-widget-heading\" data-id=\"5473c49\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-heading-title elementor-size-large\">Related posts<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6676f16 elementor-grid-3 elementor-grid-tablet-2 elementor-grid-mobile-1 elementor-posts--thumbnail-top elementor-widget elementor-widget-posts\" data-id=\"6676f16\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;classic_columns&quot;:&quot;3&quot;,&quot;classic_columns_tablet&quot;:&quot;2&quot;,&quot;classic_columns_mobile&quot;:&quot;1&quot;,&quot;classic_row_gap&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:35,&quot;sizes&quot;:[]},&quot;classic_row_gap_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;classic_row_gap_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"posts.classic\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-posts-container elementor-posts elementor-posts--skin-classic elementor-grid\" role=\"list\">\n\t\t\t\t<article class=\"elementor-post elementor-grid-item post-50548 post type-post status-publish format-standard has-post-thumbnail hentry category-battery-industry 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https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/08\/low-voltage.jpg 1000w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/div>\n\t\t<\/a>\n\t\t\t\t<div class=\"elementor-post__text\">\n\t\t\t\t<div class=\"elementor-post__title\">\n\t\t\t<a href=\"https:\/\/www.takomabattery.com\/fr\/definition-of-low-voltage-battery-and-usage-instructions\/\" target=&quot;_blank&quot;>\n\t\t\t\tDefinition of low voltage battery and usage instructions\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-post__meta-data\">\n\t\t\t\t\t<span class=\"elementor-post-date\">\n\t\t\tao\u00fbt 24, 2022\t\t<\/span>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/article>\n\t\t\t\t<article class=\"elementor-post elementor-grid-item post-49588 post type-post status-publish format-standard has-post-thumbnail hentry category-battery-industry category-battery-materials category-lithium-battery-technology tag-battery tag-battery-cell tag-lithium-battery tag-lithium-ion-battery\" role=\"listitem\">\n\t\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/www.takomabattery.com\/fr\/cause-analysis-of-undercapacity-of-battery-cell\/\" tabindex=\"-1\" target=&quot;_blank&quot;>\n\t\t\t<div class=\"elementor-post__thumbnail\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"225\" src=\"https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/08\/Cause-analysis-of-undercapacity-of-battery-cell-300x225.jpg\" class=\"attachment-medium size-medium wp-image-49617\" alt=\"Cause analysis of undercapacity of battery cell\" srcset=\"https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/08\/Cause-analysis-of-undercapacity-of-battery-cell-300x225.jpg 300w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/08\/Cause-analysis-of-undercapacity-of-battery-cell-768x576.jpg 768w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/08\/Cause-analysis-of-undercapacity-of-battery-cell-600x450.jpg 600w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/08\/Cause-analysis-of-undercapacity-of-battery-cell.jpg 1000w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/div>\n\t\t<\/a>\n\t\t\t\t<div class=\"elementor-post__text\">\n\t\t\t\t<div class=\"elementor-post__title\">\n\t\t\t<a href=\"https:\/\/www.takomabattery.com\/fr\/cause-analysis-of-undercapacity-of-battery-cell\/\" target=&quot;_blank&quot;>\n\t\t\t\tCause analysis of undercapacity of battery cell\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-post__meta-data\">\n\t\t\t\t\t<span class=\"elementor-post-date\">\n\t\t\tao\u00fbt 14, 2022\t\t<\/span>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/article>\n\t\t\t\t<article class=\"elementor-post elementor-grid-item post-44418 post type-post status-publish format-standard has-post-thumbnail hentry category-battery-industry category-lithium-ion-battery-knowledge category-lithium-iron-phosphate-battery tag-battery tag-battery-cell tag-lithium-battery tag-lithium-ion-battery\" role=\"listitem\">\n\t\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/www.takomabattery.com\/fr\/understand-the-basic-of-watts-to-amps\/\" tabindex=\"-1\" target=&quot;_blank&quot;>\n\t\t\t<div class=\"elementor-post__thumbnail\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"225\" src=\"https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/06\/Understand-the-basic-of-watts-to-amps-volts-and-ohms-300x225.jpg\" class=\"attachment-medium size-medium wp-image-44451\" alt=\"Understand the basic of watts to amps, volts and ohms\" srcset=\"https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/06\/Understand-the-basic-of-watts-to-amps-volts-and-ohms-300x225.jpg 300w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/06\/Understand-the-basic-of-watts-to-amps-volts-and-ohms-768x576.jpg 768w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/06\/Understand-the-basic-of-watts-to-amps-volts-and-ohms-600x450.jpg 600w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/06\/Understand-the-basic-of-watts-to-amps-volts-and-ohms.jpg 1000w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/div>\n\t\t<\/a>\n\t\t\t\t<div class=\"elementor-post__text\">\n\t\t\t\t<div class=\"elementor-post__title\">\n\t\t\t<a href=\"https:\/\/www.takomabattery.com\/fr\/understand-the-basic-of-watts-to-amps\/\" target=&quot;_blank&quot;>\n\t\t\t\tUnderstand the basic of watts to amps, volts and ohms\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-post__meta-data\">\n\t\t\t\t\t<span class=\"elementor-post-date\">\n\t\t\tjuin 10, 2022\t\t<\/span>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/article>\n\t\t\t\t<\/div>\n\t\t\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Processus et mesures pr\u00e9ventives de l'emballement thermique de la batterie L'emballement thermique de la batterie est un ph\u00e9nom\u00e8ne dans lequel la pression de la cellule de la batterie augmente et la temp\u00e9rature s'\u00e9l\u00e8ve pour de multiples raisons. Si l'exc\u00e8s de chaleur de la batterie n'est pas dissip\u00e9 \u00e0 temps, la chaleur s'accumule dans une certaine mesure \u00e0 l'int\u00e9rieur de la batterie,<\/p>","protected":false},"author":3,"featured_media":57600,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","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":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","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":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[210,211,151],"tags":[7,117,130,153],"class_list":["post-57599","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-battery-industry","category-lithium-battery-technology","category-lithium-ion-battery-knowledge","tag-battery","tag-battery-cell","tag-lithium-battery","tag-lithium-ion-battery"],"modified_by":"tycorun666","_links":{"self":[{"href":"https:\/\/www.takomabattery.com\/fr\/wp-json\/wp\/v2\/posts\/57599","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.takomabattery.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.takomabattery.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.takomabattery.com\/fr\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.takomabattery.com\/fr\/wp-json\/wp\/v2\/comments?post=57599"}],"version-history":[{"count":0,"href":"https:\/\/www.takomabattery.com\/fr\/wp-json\/wp\/v2\/posts\/57599\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.takomabattery.com\/fr\/wp-json\/wp\/v2\/media\/57600"}],"wp:attachment":[{"href":"https:\/\/www.takomabattery.com\/fr\/wp-json\/wp\/v2\/media?parent=57599"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.takomabattery.com\/fr\/wp-json\/wp\/v2\/categories?post=57599"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.takomabattery.com\/fr\/wp-json\/wp\/v2\/tags?post=57599"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}