What factors affect the cycle life of lead-acid batteries? How to improve cycle life?
Publish Time: 2024-05-14
The cycle life of lead-acid batteries is affected by many factors, including the following:
Temperature: Temperature has a greater impact on the life of lead-acid batteries. Battery life increases with temperature within a certain temperature range because capacity increases with temperature. However, temperatures that are too high or too low can cause battery life to decrease. High temperature may cause overcharging, while low temperature may cause undercharging. In particular, high temperature has a particularly obvious impact on battery life. It is generally recommended to control the ambient temperature around 25°C.
Depth of discharge: Depth of discharge also has a great impact on the service life of lead-acid batteries. The greater the depth of discharge of the battery, the fewer cycles it will be used. Therefore, we should try our best to prevent deep discharge during use and avoid deep discharge caused by small current discharge.
Float charge voltage: Too low a float charge voltage will lead to insufficient charging and irreversible sulfation of the battery negative electrode; while too high a float charge voltage will accelerate water loss and corrosion of the positive plate, thereby affecting the cycle life of the battery.
Charging current: The size of the charging current will also affect the cycle life of the battery. The higher the charging current (faster the charging speed), the shorter the cycle life.
In order to improve the cycle life of lead-acid batteries, the following measures can be taken:
Control the temperature: Try to control the battery's working environment temperature within an appropriate range to avoid excessively high or low temperatures that have a negative impact on battery life.
Control the depth of discharge: avoid deep discharge and try to keep the battery working in a shallow discharge state. This can be achieved by increasing battery capacity or reducing discharge load.
Adjust the float voltage: Adjust the float voltage according to the actual situation of the battery to avoid damage to the battery due to too low or too high voltage.
Optimize charging methods: Use appropriate charging methods, such as trickle charging, constant current charging, etc., to avoid damage to the battery caused by too large or too small charging current.
Regular maintenance: Perform regular maintenance and upkeep on the battery, such as checking the electrolyte level, cleaning the battery surface, tightening the connections, etc., to ensure that the battery is in good working condition.
In addition, there are other methods to improve the cycle life of lead-acid batteries, such as increasing the number of plates, increasing the specific gravity of sulfuric acid in the battery, and increasing the amount and proportion of lead oxide, the active material of the positive plate, etc. These measures can improve the capacity and performance of the battery to a certain extent, thereby extending its cycle life.
