Batteries on the market today are mainly categorized into lithium batteries and lead-acid batteries, which have very different properties and therefore different methods of fast charging. Here’s how to make battery charging faster while considering safety.
1.1.1 When lithium batteries leave the factory, the manufacturer will pre-charge them, but long-term storage will reduce the energy in the battery. Therefore, before use, it is necessary for us to charge and discharge the battery 3 to 5 times completely. This will ensure the energy density of the battery.
1.1.2 Li-ion batteries should try not to be recharged after the power is depleted, which will risk over-discharging and affect the subsequent use of the battery. And the power supply should be removed in time after the battery is full, overcharging of lithium batteries will also affect the battery performance.
1.1.3 Charger Try to choose the original or brand-guaranteed charger, before purchasing, carefully read the battery manual to confirm the charger power required by the battery.
1.2.1 Pulse charging
Pulse charging is generally divided into three stages: pre-charging, constant current charging, and pulse charging. Compared with conventional charging methods, pulse charging can charge at a higher current and charge faster. Moreover, pulse charging has less variation in battery temperature and less impact on battery life.
1.2.2 Reflex fast charging method
This method is also divided into three stages, including 3 stages of forward charging, reverse instantaneous discharge and stop charging. It almost solves the polarization phenomenon of the battery and improves the charging efficiency. However, this method has a large change in battery temperature, and it is necessary to pay attention to the battery temperature situation at all times.
1.2.3 Intelligent charging method
This is the best method among the three charging methods, which mainly uses du/dt and di/dt control technology to control the charging current. The charging program can be adjusted according to the real-time situation of the battery to achieve the effect of safe and fast charging.
2.1.1 When charging lead-acid batteries, it should be ensured that the outgassing rate is maintained at a low level, so as to prevent the generated gas from dislodging the active substance and protect the capacity and life of the battery.
2.1.2 Lead-acid battery in rapid charging, will produce high temperature, shorten the life of the battery, generally should make the temperature control within 45 ℃.
2.2.1 Constant voltage charging method
In the charging process, keep the charging voltage constant, this method is relatively simple, but it is easy to cause excessive current at the beginning of charging, affecting battery life. As charging proceeds, the internal voltage of the battery rises and the charging rate decreases until it is full.
2.2.2 Constant outgassing rate charging method
The use of sensors to monitor the real-time outgassing rate inside the battery, charging with high current at the beginning of charging, when the gas in the battery reaches a certain amount, reduce the current to ensure that it is maintained at the same outgassing rate. This not only improves the charging efficiency of the battery, but also effectively extends the battery life.
Although the above methods can help you with fast charging, fast charging may accelerate the polarization and lithium precipitation process of the battery, which will lead to a shorter battery life. It is recommended to try to use AC slow charging as the main charging method and DC fast charging as the supplementary charging method when the charging conditions are convenient, in order to use the battery reasonably and prolong its service life. Avoid charging in a low or high temperature environment.
.png "English")
