Battery pulse charging procedure

How does pulse charging affect battery performance?

Firstly, using the C–R pulse mode, it was determined that pulse charging has a positive impact on shortening the charging time for both LFP batteries and NMC batteries, and a smaller frequency is the key to improving battery performance and shortening the total charging time. For the C–R mode, the pulse current amplitude has the greatest impact.

What is a pulse charging method?

This method means charging for a specific duration, followed by a period of rest, repeating in cycles. The third form is charging current followed by discharging current (C-D), representing a cycle of charge and discharge within a specific time. Fig. 1. Schematic diagram of different pulse charging strategies.

What are the parameters of pulse charging?

Common parameters in pulse charging include the frequency, pulse width, and relaxation, and some protocols even pulse negative currents during relaxation. The pulse frequency typically ranges from 200 mHz to 13 kHz with a duty cycle between 25% and 75%. The average current IAvg is the product of the peak current Ipk and the duty cycle D:

How do you charge a battery using a voltage pulse?

Several techniques can be used to charge batteries utilizing voltage pulses, including duty-varying voltage pulses and variable-frequency voltage pulses. To determine the duty in a commercial battery pulse charge system, a duty-varied voltage pulse-charge strategy is proposed in and .

Do pulse charging patterns affect battery performance at room temperature?

The C-D pulse charging mode extends battery cycle life. Pulse charging helps reducing concentration polarization in batteries. This study aims to experimentally investigate the impact of different pulse charging patterns on the charging time and performance of lithium-ion batteries at room temperature.

Which pulse is applied at the initial stage of charging?

Let us take a look at the left column first. As shown in Fig. 3 a, pulses of 8 A are applied at the initial stage of charging. This is because the the battery can allow for a large charging current when at a low SoC level but PAM-C is subjected to the pre-set bound M max = 8 A.