Page 18 - PEN eBook July 2023

Smart Energy

leads to dangerous situations and may even cause a fire or an explosion of the battery. Hence, it
can be generally stated that overcharging and over-discharging of Li-ion batteries is not allowed.

Based on the used cathode, LiFePO , LiMn O , NCM and Li-ion batteries have varieties that propose
4 2 4
different performance levels when it comes to charge rate, safety, cost, charge, discharge and
environmental impact. Applications include notebook computers, cellphones and EV batteries.

The performance of power batteries is essential for market acceptance. For example, when it
comes to EVs, energy density is a key factor. Li-ion batteries have higher energy density, power
density and lifetime and are more promising for the future compared with nickel-based batteries.
There is ongoing research to improve different aspects of the batteries, namely on cost, charge rate
and safety.

There are many other aspects to consider when choosing a battery, and it is best to be advised
by an FAE or an expert. You can always reach out to your local BMS and battery expert at Arrow
Electronics to help you out.

HAZARDS TO BE PROTECTED FROM
BMSes are made to regulate and monitor the charge and discharge of batteries. There are several

characteristics to be monitored, including temperature, current, voltage, battery type, isolation in

Figure 1: Operating window for a Li-ion cell (NMC)

18 JULY 2023 | www.powerelectronicsnews.com