Quick Recharge Study on LIFEPO4 batteries

Estudio sobre la recarga rápida en las baterías

Quick Recharge Study on LIFEPO4 batteries

We have always associated with fast recharges with greater battery degradation. Something that many users are checking on their own account that is not entirely true.

In Renobat We disseminate the first part of a study published by Stanford university, along with the Stanford Institute for Materials and Energy Sciences (simes) where the impact of fast reloads has been thoroughly analyzed in the Current lithium batteries. An example we see in the Tesla model S. After almost two years, some homeowners are providing data of autonomy almost identical to those achieved at the time of the release of the car, even using Tesla’s powerful super loaders Network.

Those responsible for this study have emphasized that The results of these first tests challenge the predominant idea that recharging the batteries using high-power outlets is more damaging to the electrodes than Low-power Recharges. The results also suggest that future developments will allow to modify the electrodes or change the way the batteries are charged, to achieve a more uniform loading and unloading process, something that will result in a longer lifespan ”

According to William Cheh, one of the authors of the study “this research allows us to see with detail that happens inside the electrode, and this has let us check for the first time that the process of loading and unloading is only one of the factors that will determine the life of the battery A. This work has allowed us to think differently about the degradation of this element ”

For the study, the Stanford University team has used an iron-lithium phosphate (LiFePO4) cathode to which they have undergone different types of recharge. They have then sent these samples to a laboratory at the University of Berkeley, where using a special technique, have managed to see thousands of nano particles of the electrodes, to check their condition during loading and unloading processes.

The result is that, during the charging process, even fast-charging, only a small percentage of nano particles have absorbed and released Ions. however, when the speed of discharge increases above a certain threshold, more and more particles began to absorb ions simultaneously.

This means that, without major changes, scientists can develop batteries that are much more resistant to loading and unloading processes, simply by modifying the electrode material, which will result in batteries with a longer lifespan.

What if it degrades the batteries is to get out of the working temperature Fork. That can be produced by a fast charge, yes, but also by a voracious discharge or by an extreme ambient temperature. Renobat experts solve this problem by programming suitable parameters in the BMS so that it is the one who controls these potential anomalies, among which, the temperature of the Batteries.