12V 42Ah Lithium Iron Phosphate Battery Pack With BMS
species |
Lithium Iron Phosphate |
Voltage | 32700-12V |
capacity | 40AH |
Batteries | IFR32700 3.2V 6Ah |
size | 195*131*185mm |
weight | 6.5KG |
Maximum charging current | 50A |
Maximum discharge current | 50A |
Display screen | Yes |
Communication support | Bluetooth/S485/CAN |
The secret of lithium-ion battery aging
The range of use of batteries has always been a concern for
researchers, because no matter how big the battery is, it doesn't
make sense not to recharge it multiple times. We all understand
that lithium-ion batteries reduce their capacity when used, but no
one understands why. Recently, the United States Energy Agency
discovered the cause of battery aging: nanoscale crystals.
Scholars have carefully studied the positive and negative electrode
materials of modern batteries, and found that these materials will
be directly corroded during use, but the mechanism of corrosion is
not clear. The Brookhaven National Laboratory team studied
high-quality nickel-oxygen cathodes under a transmission electron
microscope and recorded how they changed when they were repeatedly
charged and discharged.
The more you use, the less you use
Experiments have shown that when lithium ions pass through the
positive and negative electrodes, they get stuck in the ion
channels and react with nickel oxides to form tiny crystals. These
crystals alter the internal structure of the battery, making it
impossible for other ions to react effectively, reducing the usable
capacity of the battery. Surprisingly, this weakness is random, not
regular.
The reason why a lithium-ion battery is imperfect is that its
components are not perfect. No matter how much we pay attention to
the structure of the anode and cathode, there will be slight damage
to the crystal. Just like boiling water, the uneven surface makes
hot water more susceptible to foaming. It can be assumed that
nanocrystals appeared when there was a gap in the battery data.
