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Temperature is a determinant parameter in terms of performance, lifespan and safety working with li-ion batteries. Working above 45°C, in hot climates, has direct influence in the cycle life of the battery and can cause a dangerous failure if higher temperatures are reached; besides, performance of li-ion batteries in cold climates is very poor due to the high internal resistance they present under...
In this work main unbalancing effects and causes in series connected lithium ion cells are analyzed. Literature and research papers are analyzed regarding manufacturing process and environmental issues, detecting main unbalancing aspects. There is not much work in the literature focused in unbalancing effects and causes; due to insufficient knowledge a test procedure to detect unbalancing effects...
High power battery systems are composed of big array of series connected single cells. The main reason of increasing battery pack voltage is, to increase power by decreasing current and improve the efficiency. To control the charge and voltage of each cell a BMS with balancing system is necessary. Battery modeling is hard work, and battery dispersion and deviations are not taken into account. To overcome...
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