Battery cell manufacturers usually specify maximum continuous charging and discharging current limits, along with peak charging and discharging current limits. Lithium-ion cells have different current limits for charging than for discharging, and both modes can handle higher peak currents, albeit for short time periods. In many cases, further derating may be applied to reside within the SOA safe zone in the interest of promoting further battery lifespan. Figure 1 illustrates a typical lithium-ion cell SOA, and a well-designed BMS will protect the pack by preventing operation outside the manufacturer’s cell ratings.
The electrical SOA of any battery cell is bound by current and voltage. Monitoring battery pack current and cell or module voltages is the road to electrical protection. Battery pack protection management has two key arenas: electrical protection, which implies not allowing the battery to be damaged via usage outside its SOA, and thermal protection, which involves passive and/or active temperature control to maintain or bring the pack into its SOA.Įlectrical Management Protection: Current We’ll discuss how these two features work here. There are many BMS design features, with battery pack protection management and capacity management being two essential features. Certification requirements from various government regulations where costs and penalties are paramount if inadequate functional safety measures are in place.Application of the battery and any safety, lifespan, and warranty concerns.
The costs, complexity, and size of the battery pack.The technology design scope and implemented features generally correlate with: The BMS certainly has a challenging job description, and its overall complexity and oversight outreach may span many disciplines such as electrical, digital, control, thermal, and hydraulic.īattery management systems do not have a fixed or unique set of criteria that must be adopted. While they perform superbly, they can be rather unforgiving if operated outside a generally tight safe operating area (SOA), with outcomes ranging from compromising the battery performance to outright dangerous consequences. Lithium-ion rechargeable cells have the highest energy density and are the standard choice for battery packs for many consumer products, from laptops to electric vehicles. Here, the term “battery” implies the entire pack however, the monitoring and control functions are specifically applied to individual cells, or groups of cells called modules in the overall battery pack assembly. Reporting operational status to external devices.Continually optimizing battery performance.Estimating the battery’s operational state.The oversight that a BMS provides usually includes: We are pleased to present our LiBrick 24 to you today.Battery management system (BMS) is technology dedicated to the oversight of a battery pack, which is an assembly of battery cells, electrically organized in a row x column matrix configuration to enable delivery of targeted range of voltage and current for a duration of time against expected load scenarios. In addition to our custom-built battery packs, we now also offer standardised energy solutions. News LiBrick 24 – Our standardised and individually configurable energy system.Besides wind farms, it is also focusing on green hydrogen. Germany is working with its neighbours to advance alternative energy production. News North Sea to become Europe's 'green power plant'.Now, we are also very much looking forward to the Battery Experts Forum, 12 to 14 July 2022 in Frankfurt. We already look back at Data Centre World in Frankfurt and LogiMAT in Stuttgart, where Battery-Kutter was present with a stand. With all trade fairs unfortunately cancelled in the past two years due to the Corona pandemic, things are finally getting underway again. News Looking back and forward to trade fairs.Our sister company Wamtechnik has turned 30 years old and we congratulate them on their anniversary! News 30 years of Wamtechnik - congratulations!.
The battery professional#
Professional project management is of fundamental importance to us at Battery-Kutter, which is why the Battery-Kutter Project Management Process has now been developed as our guide. News Battery-Kutter Project Management Process.We are very pleased to welcome you at our stand C406. News Meet us at the Battery Experts Forum!įrom 12 to 14 July 2022, the international expert platform for the latest trends, pro-duct developments and solutions in battery technology will take place in the halls of Messe Frankfurt.Īnd Battery-Kutter will of course be there again - this time together with our sister company Wamtechnik.
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