Lithium-ion battery packs are composed of many lithium-ion cells in a complex series and parallel arrangement. Many cells are needed when building a battery pack in order to provide the right amount of voltage, capacity, temperature, and current-carrying capacity characteristics.
If you are looking to build safe-high performance battery packs, then you are going to need to know how to choose a BMS for lithium batteries. The primary job of a BMS is to prevent overloading the battery cells. So, for this to be effective, the maximum rating on the BMS should be greater than the maximum amperage rating of the battery.
Here are five key points to keep in mind: Different battery chemistries (e.g., lithium-ion, lithium-iron phosphate) have specific charging and discharging characteristics. Ensure that the BMS you select is compatible with the chemistry of your battery pack.
When charging a lithium-ion battery, a high voltage is applied across many sets of lithium-ion cells in series. If any one of the cell groups reaches the maximum charge voltage of a lithium-ion battery (4.2 volts), then the charge MOSFETs will be switched off to prevent overcharging the battery cells.
How to use: First, pick your path: there are two buttons under the display area choose if you want to design your battery pack by specs or by a custom shape. Once you choose one option you will be presented with input fields to generate the initial pack design. Fill in the fields that are relevant to your build which will modify the pack design.
Ensure that the BMS you select is compatible with the chemistry of your battery pack. The BMS should be designed to optimize the performance and safety of that specific chemistry. Determine the maximum & minimum voltage and current requirements of your battery pack. The BMS should be capable of handling these specifications.
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Battery school presents basic knowledge about lithium-ion battery. The 2nd period explains how to choose the right lithium-ion battery. The page is for Toshiba Industrial Lithium-ion Battery SCiB™ Industrial Pack.
If you''re building a battery pack you''re going to need a BMS, or battery management system, wired inline. Use this tool to choose the right one for your specific needs.
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