Issues affecting the life of lead-acid batteries and their solutions

One: The vulcanization problem. This problem directly affects the life of the battery. This problem has been plagued by battery research and processing all over the world. I want to think of ways to break through, but I can't break through it. No matter which kind of battery, it is in the process of operation. Sulfidation will occur in the battery, that is, during the charging process of the battery, due to the increase of the charging temperature, sulfuric acid crystals will be precipitated, and some chargers will reduce part of the sulfuric acid liquid, and some electric vehicle manufacturers will use Normal chargers do not have the function of sulfidation reduction, which accelerates the irreversibility of sulfided crystals and also accelerates the end of battery life. No matter what kind of chargers, the vulcanization phenomenon cannot be guarded, but it is a speed issue. 80 More than% of the batteries are due to the vulcanization phenomenon, which leads to a low life span, which seriously affects the utilization rate of resources and the cost of use. Two: The problem of thermal runaway, due to the processing technology, after most batteries are processed, there will be uneven capacity The problem is that if the single cell is used better, if it is used in combination, there will be differences in size. When charging, some will have overflowed, and some have not overflowed. When all is overflowed, the previous one has already been overcharged. , Overcharging will cause the life of the battery to be greatly reduced. The time is long, and the temperature is very high when small, which will cause thermal runaway. Thermal runaway will deform and swell the shape of the battery. Thermal runaway will also increase the concentration of sulfuric acid. , Accelerate the emergence of sulfided crystals, thereby reducing the service life. Three: The problem of chargers, currently three-stage chargers are generally used, that is, floating charging. Constant charging. Constant voltage charging, this charging method will not cause strong The current and voltage are used for the battery, causing overcharge. If the quality of the charge is not good, overcharge will cause great damage to the battery. This problem is generally impossible for electric vehicle users to judge, and overcharge is also an important reason for the short life of the battery. : The problem of over-discharge, over-discharge is when the battery is running, because the user wants to accelerate suddenly or forcibly pass under bad road conditions, it will be easy to over-discharge. Also, when the battery is insufficient , The battery is still running, these will seriously affect the battery's heart part plate, once the plate is damaged, the life will be greatly reduced, and even repair is impossible. Five: frequent charging, consumers often think that no matter it is used How much electricity, as long as the battery is not running, it is often charged, which will protect the battery from the loss of electricity. In fact, the number of cycles of the battery is fixed, between 350400, that is, when the charging reaches or exceeds this number of times, It is the time for the battery to be scrapped, so charging depends on the amount of power to determine whether it should be refilled. Six: The influence of temperature, when the outside temperature is high, the activity of the battery is high and the energy is relatively strong, and when the temperature is low, The activity of the battery will decrease and the capacity will decrease. If the battery life is increased if it is at a constant temperature, and vice versa, it will be reduced. Winter is often the peak period for battery scrap, so the protection of the battery must be strengthened in winter. : Deep discharge, regular deep discharge is an important measure for the necessary maintenance of the battery. Although the lead-acid battery has no memory, the battery is maintenance-free, but it is not to say that it is not maintained. This is a misunderstanding. Deep discharge can improve the activity of the battery. It is very useful to improve the capacity of the battery. Eight: The cause of physical damage is generally not known by consumers, and its severity is very terrible. Physical damage refers to the corrosion, shedding, and separation of the electrode plate. The necrosis of the battery cannot be repaired. This situation is generally due to the fact that there are too many liquid batteries. Due to the gas evolution of charging, the concentration of the liquid increases, and the upper plate of the electrode plate does not have the circulation of the liquid, and the phenomenon of corrosion and shedding will occur. , If you don’t add water in time, partitions will occur. There are many such phenomena, and dry types will also occur. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete the previous one: 18650 Why is power lithium-ion battery pack the first choice for new energy vehicles