High frequency characteristics of lithium batteries

Do cylindrical Li-ion batteries have high frequency properties?

High frequency (HF) properties of lithium-ion (Li-ion) batteries receive growing attention, as an increasing number of highly dynamic loads are present in today's hybrid or battery electric vehicles (HEV, BEV). In this paper, we address the need for a better understanding of the HF characteristics of cylindrical Li-ion cells.

Do lithium ion batteries affect HF current pulses?

First in literature, all these effects are measured and summarized in an equivalent electrical circuit model, which predicts the cell's impact on HF current pulses. Lithium-ion (Li-ion) batteries in electric vehicles are exposed to high slew rate currents originating from the power electronics.

Are lithium ion batteries exposed to high slew rate currents?

Abstract: Lithium-ion (Li-ion) batteries in electric vehicles are exposed to high slew rate currents originating from the power electronics. Modern gallium nitride and silicon carbide-based power converters generate high switching frequencies, which propagate toward the battery.

Do lithium-ion batteries decay quickly?

At low operating temperatures, the power capability and charging/discharging capacity of lithium-ion (Li-ion) batteries can decay rapidly. Therefore, it is esse Thermal Characteristics Investigation of Lithium-Ion Battery Under High-Frequency AC Excitation in Low-Temperature Environment | IEEE Journals & Magazine | IEEE Xplore

Can a self-heating circuit topology be used to study Li-ion batteries?

In this article, a self-heating circuit topology is used for studying the characteristics of Li-ion batteries at low temperatures and under high-frequency ac excitation. The thermal behaviors of Li-ion batteries under high-frequency ac excitations are comprehensively analyzed with an improved heat generation model.

Can a battery be characterized beyond typical EIS frequencies?

This article proposes a novel method to characterize the battery beyond typical EIS frequencies. Developing a novel fixture to mount a single battery and applying proper de-embedding techniques enable a cell characterization from 1 kHz up to frequencies as high as 300 MHz using the 2-port shunt-through vector network analyzer (VNA) method.