Why the battery life of electric vehicles is short

1. Reasons for the working principle of lead-acid batteries. The process of charging and discharging lead-acid batteries is an electrochemical reaction. When charging, lead sulfate forms lead oxide, and when discharging, lead oxide is reduced to lead sulfate. Lead sulfate is easy to crystallize. The crystallized lead sulfate can no longer be reduced to lead oxide when it is charged. It also precipitates and adheres to the electrode plate, resulting in a decrease in the working area of u200bu200bthe electrode plate. This phenomenon is called vulcanization, which is often referred to as aging. . At this time, the battery capacity will gradually decrease until it becomes unusable. 2. Reasons for the special working environment of electric bicycles. As long as it is a battery, it will be vulcanized during use, but lead-acid batteries in other fields have a longer life than the lead-acid batteries used in electric bicycles. This is because the lead-acid batteries of electric bicycles have a more easily vulcanized working environment. ①Deep discharge, long-term riding of the electric bicycle ②High current discharge, under the condition of overspeed and overload ③High charging and discharging frequency ④Short-term charging ⑤Can't charge in time after discharge Suggestions: 1. It is best not to unplug when it is not fully charged Power down the charger to use the electric car. 2. Achieve timely charging. The idle time should preferably not exceed 12 hours, and the corresponding floating charging time should be added. 3. For those with less usage, it is best to charge after 50%-80%, which will help prolong the battery life. 4. After the battery has been used for one year, it is best to charge it at a constant current every 2 months, the current is C/15, and the time is 20 hours. 5. Pull less heavy objects, do not drive too fast, and reduce the discharge current of the battery. 6. Accelerate slowly to reduce the impact of high current on the battery, controller and motor. Moreover, the vast majority of battery explosions often occur during charging, leading to frequent bicycle explosion accidents and continuous tragedies. When the battery is charged, once an explosion occurs, the battery and the bicycle will be burnt, and a large amount of toxic and harmful gas will be released, and the surrounding flammable materials, such as curtains, clothing, etc. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: About lithium-ion batteries and a brief history of development