Feature: Batteries


Figure 1: An advanced battery measurement solution, with software that collects dynamic discharge current data


Battery


measurement solutions help improve e-vehicle performance


By Andrew Herrera, Product Marketing Manager for RF test software, Keysight


L 18 April 2024 www.electronicsworld.co.uk


ow-power e-mobility vehicles have become extremely popular in recent years as sustainable and efficient modes of transport. Electric bicycles and scooters have reduced carbon emissions and lower operating costs. However, to fully maximise these vehicles’ potential, it is crucial to understand the


performance and characteristics of their batteries. Specifically, we must understand the battery’s performance under various load conditions, its charge/discharge dynamic and ageing.


Key factors impacting battery life In general, load affects the power and travel distance of the electric vehicle. Load refers to the combined weight of the vehicle’s rider, cargo and accessories. As it increases, the power requirements of the electric motor also increase, leading to a shorter travelling distance for the vehicle. Similarly, adding features like touchscreens, a wireless connection module, GPS, or a high-performance brushless DC motor will demand more power from the battery. For the designers of these systems, it is a constant battle


between customer demands versus battery performance. To successfully navigate this fine balance, understanding the complex challenges involved in measuring and optimising battery performance in EVs is crucial. Tese challenges serve as a litmus test for the resilience and efficiency of energy storage systems within e-mobility vehicles. To gauge battery health, engineers must grapple with several intricate factors, including battery chemistry, depth of discharge,


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