Batteries

Battery Stack Monitor Maximizes Performance of Li-Ion Batteries in Hybrid and Electric Vehicles

July 20, 2021 By

Lithium-ion (Li-Ion) batteries are a popular way to store energy in electric and hybrid vehicles. These batteries offer the highest energy density of any current battery technology, but to maximize performance, a battery monitoring system (BMS) is mandatory. A state-of-the-art BMS not only allows you to extract the highest quantity of charge from your battery pack, but also lets you manage the charge and discharge cycles in a safer way, which results in an extended life.

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Battery Management System Tutorial

May 4, 2018 By

Creating a BMS and charging scheme to optimize battery life requires careful consideration. This article discusses the BMS architecture, its major functional blocks and the importance of each block.

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Understanding, Interpreting and Implementing the IEC 60601 for Medical Battery Chargers

October 29, 2013 By

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Understanding, interpreting and implementing standards is a challenge in all industries. Medical standards for electronics can be particularly onerous, and while it is uncommon for regulatory changes to effect products already in production, the third edition of 60601-1 is an exception. IEC 60601-1 applies to all electrical and electronic medical devices and their accessories. The 3rd edition was adopted by global regulatory authorities, and on a national level, regulatory affectivity dates are harmonized across global jurisdictions. Medical OEMs need to carefully manage vendors for their chargers and other accessories as these changes take place. This white paper will provide an outline and update of the standard, as well as compliance guidelines for portable medical devices.

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Li-ion Battery Temperature Trends During Charge and Discharge

October 3, 2013 By

Lithium chemistry batteries are replacing Sealed Lead Acid (SLA) and Nickel Metal-hydride (NiMH) types in many fixed and portable applications due to their higher energy storage density relative to both weight and volume. As larger Lithium chemistry batteries are designed, managing the waste heat generated by the ever higher high charge and discharge currents becomes an increasing challenge.

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The Dangers of Aftermarket Counterfeit Battery Packs

August 28, 2013 By

The continuing growth of portable handheld devices has spawned a healthy selection of aftermarket battery pack suppliers. The ownership period of an individual portable device often exceeds the cycle life of the original battery. This is especially true for medical, industrial and military original equipment manufacturers (OEMs) where product life cycles can be as long as ten years or more. Both the OEM and end user pay a price when counterfeit battery replacements are chosen. The quantifiable impact of imitation battery packs to the OEM includes increased safety risks for their customers, greater product returns due to non-performing batteries, reduced customer satisfaction, and reduced revenue for batteries supplied by the original manufacturer. The field failures of individual batteries have the potential to result in serious injuries, and we mustn’t forget the importance of protecting ourselves and our customers from these failures.

In an analysis of several counterfeit batteries, Electrochem Solutions, Inc. engineers found safety violations ranging from insufficient safety circuitry to poor manufacturing quality. This paper details some of the safety issues observed in counterfeit battery packs and presents options to implement a prevention program to control the aftermarket ecosystem.

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