58
Please charge immediately after the use of the vehicle in environment with
temperature lower than 0
℃
Discharging temperature range: -25 to 50
℃
, the discharge capacity in low
temperature (-25 to 0
℃
) is lower than the normal temperature. The battery
can be used at 40~50
℃
ambient temperature, but if the battery
temperature is too high, especially the battery in the long time high
temperature environment, will accelerate the battery internal material aging,
shorten the battery life, it is not recommended to use long at this
temperature.
Environmental temperature over the above range of charge and discharge
temperature, will have a negative impact on the performance of batteries or
damage, may shorten the service life of the battery, please avoid.
According to the chemical properties of lithium ion batteries, in normal use, the
internal energy of chemical reactions between normal and chemical, but under certain
conditions, such as the overcharge, over discharge and overcurrent will lead to
abnormal chemical reactions occurring inside the battery, it will seriously affect the
performance of the battery and service life, and may produce large amounts of gas,
so that the internal pressure of the battery increases rapidly after the resulting cell
bulging failure, therefore all lithium-ion batteries need a protection circuit for effective
monitoring of the charge and discharge state of battery, and in some conditions to turn
off the charge and discharge circuit to prevent damage to the battery.
Protection circuit usually includes overcharge protection, over discharge protection,
over-current protection, temperature protection, short-circuit protection, insulation
protection, etc., so as to effectively protect the normal use of batteries.
2.3
Working principle of lithium ion battery:
Lithium iron phosphate battery:
a lithium ion two cell using lithium iron
phosphate as cathode material,
The chemical equation for charging and discharging is as follows:
During charging:
Charging
Discharging
