Correct charging method for lithium battery pack
3.2V of the lithium iron phosphate battery pack is rated. In the charging process, the full voltage is related to the charging current. When the current is 0.3c, 3.8V can be judged to be full; if it is 0.1C, 3.65V can be considered to be full. CCCV charging method is recommended for lithium iron phosphate battery pack, that is, constant current and constant voltage. Constant current is recommended at 0.3c. When the battery voltage reaches 3.65V, use 3.65V constant voltage to charge. When the charging current is lower than 0.1c (or 0.05c), stop charging, that is, the battery is fully charged. It is recommended not to charge at too high a voltage. After adjusting the voltage, ensure that the charging current is below 0.5C, which is good for the battery.
For the problem of how to charge the lithium battery pack, we know that the lithium battery pack needs to be charged with matching chargers. In the industrial supporting market, each product is packaged separately and is not common to each other. Therefore, the corresponding charger should be selected according to the lithium battery pack used and charged strictly in accordance with the requirements. Whether it is the industrial or civil market, because the basic principle of how to charge lithium ion battery is the same, therefore, the steps and standards of charging lithium battery can be standardized, in general, the nominal voltage of lithium battery is 3.7V, charging voltage is 4.2V.
Lithium iron phosphate battery pack charging mode
(1) Constant voltage charging method: in the charging process, the output voltage of the charging power supply remains constant. With the change of the charge state of the lithium battery pack, the charging current is automatically adjusted. If the voltage constant value is appropriate, it can not only ensure the complete charging of the power battery, but also minimize gas extraction and water loss. This charging method only considers the change of battery voltage, which is a single state, and cannot effectively reflect the overall charging status of the battery. Its initial charging current is too high, often causing damage to the power battery. Given this disadvantage, constant voltage charging is rarely used.
(2) Constant current charging method: during the whole charging process, the charging current is kept constant by adjusting the output voltage. Keeping the charging current unchanged, its charging rate is relatively low. The control method of constant current charging is simple, but the acceptable current capacity of lithium battery pack decreases gradually with the charging process. In the late charging period, the receiving capacity of power battery decreases, and the utilization rate of charging current decreases greatly. The advantages of this method are simple operation, convenient, easy to implement, easy to calculate the charge quantity.
(3) Constant current and constant voltage charging method: this charging method is a simple combination of the above two. In the first stage, constant current charging method is adopted to avoid excessive charging current at the beginning of constant voltage charging. In the second stage, constant voltage charging method is adopted to avoid the phenomenon of overcharging caused by constant current charging. The lithium iron phosphate battery pack, like any other sealed rechargeable battery, should be charged to control, not overcharge, otherwise it is easy to damage the battery. The charging method of lithium iron phosphate battery is constant current and limited voltage.
Correct charging method for lead-acid batteries
1, lead-acid battery for the first charge there is no time and charge quantity, and can charge and discharge at any time, will not lead to plate memory.
2, it is important to note that no excessive discharge and excessive charging, overcharge is into the workshop process, can lead to grid metal layer thin, easily broken grid, will lead to the plate, excessive discharge activity of spongy tissue failure, shorten the life of plate, lead-acid battery should focus on the proportion of the electrolyte and the liquid level height, can not lack of fluid.
3, general electric lead-acid battery charger, are using a three-stage charging mode, electric power, in a 100% in 8 ~ 10 hours of charging time would look like, not more than 12 hours, so that can have impact on battery life, every time it is best not to use the electricity used up, suggest that electricity consumption will be for electric vehicles recharged at around 70%, Charging time is generally about 6~8 hours.
4, the temperature is too high or too humid environment is not suitable for charging electric vehicles, easy to cause danger. The charging environment of electric vehicle lead-acid battery should ensure ventilation as far as possible, and choose a flat place to continue charging.
