In the battery charging information, we often meet the introduction of both charging and floating charging. Here we introduce the difference between the battery charging and floating charging for you.
A uniform charge is a periodic active charge of an accumulator. Regular charging can extend battery life and ensure capacity. Generally, it is constant current charging. Now the charging screen can set the regular charging time is generally 180 days. The battery is charged in the state of constant current charging, and it will automatically turn to float charging after full charging. The charging current is 1/10h of the battery capacity. For example, the charging current of 400Ah battery is 40A. The charging voltage system is automatically controlled. The meanings of battery charging and floating charging in DL5044-2004 DC system design technical regulations for power engineering are as follows: When floating charging is in normal operation, the charging device undertakes the regular load and at the same time charges the battery group to supplement the self-discharge of the battery, so that the battery is in standby with full capacity. Balanced charging in order to compensate the battery in the process of using the voltage is not uniform phenomenon, so that it is restored to the specified range of charging, as well as a large capacity discharge after the wave re-charging, known as balanced charging. All charging is Evergrande current charging, the purpose of one is when the battery discharge, quickly add electric energy, two is when the individual battery voltage deviation, eliminate deviation, tend to balance. So it is also called fast rushing and strong charging.
Floating charging is constant voltage small current charging, the purpose of one is to prevent the battery self-discharge, the second is to increase the charging depth, in addition, the conversion between floating and charging is automatically controlled by the monitoring module. Battery charging is the use of constant current charging, charging fast, short duration; Floating charge is to charge the battery at constant pressure, lasting for a long time, charging slowly.
Generally, the rated voltage of the floating charging battery is 1.125 times the number of X cells. The rated voltage of the battery is 1.175 times the number of X cells. For example, the floating charging voltage of the 2V32 battery pack is 2.25x32 = 72V, and the charging voltage is 2.35×. 32= 75.2V general charging and discharging experiments are done with a capacity of 0.1C. For example, the battery pack of 500A. H is to use 50A current and discharge for 10 hours. Theoretically speaking, 50X10=500Ah, which just puts all the capacity of the fully charged battery out. During discharge, the battery voltage should be recorded every hour, every half hour for the last 2 hours. Be careful not to put it below the allowable voltage of the battery, otherwise it will cause permanent damage! The maximum and minimum permissible voltages for a battery are marked on the outside of the battery. For example, a 2V battery cannot be placed below 1.8V.
Charging, the fully discharged battery must be charged with 0.1C constant current for more than 10 hours, and then transferred to float charge. The difference between uniform charging and floating charging: uniform charging is generally carried out in the following circumstances: 1, after the battery discharge (refers to the discharge exceeds the specified limit or discharge) or the battery static time is more than 6 months or the floating charging time is more than 6 months, the charging current is 0.1C10 (0.1 times of the capacity); 2,; Floating charge is to keep the battery in a full charging state and a small current to charge the battery (battery self-discharge and internal resistance will be different losses); 3. Because the batteries are in series, the floating charge flow through each battery is exactly the same; But the self-discharge and internal resistance of each battery can not be completely consistent, through a period of time of floating charge or storage or discharge will make the battery charging efficiency can not be completely consistent, there will be part of the battery charging is insufficient, so also want to evenly charged or evenly charged.
