What is a lead-acid battery? Analysis of lead-acid battery charging methods

Lead-acid battery is a very complicated chemical reaction system. External factors such as the size of the charge and discharge current and its operating temperature will affect the performance of the battery. Calculating the SOC value of the battery and determining the operating mode of the car according to the running state of the car and other parameters is a key technology of electric vehicles. Lead-acid batteries have the longest history of use, and are also the most mature batteries with the lowest cost and price. Mass processing has been achieved. But it has low specific energy, high self-discharge rate and low cycle life. Lead-acid battery charging methods: 1. Pulse charging is simple and economical. This method has a large charging current and a fast charging speed. The disadvantage is that when the grid voltage fluctuates, the charging current also fluctuates. 2. Constant current charging, in order to guard against too high temperature rise in lead-acid batteries and too much electrolyte loss, the charging current is adjusted to be relatively small, and the charging time is longer. On the other hand, if the charging time is too long, it will happen. Overcharge, in order to guard against damage to the battery due to overcharge, an additional overcharge test or on-time circuit is required. 3. Constant voltage charging, both theory and practice have proved that constant voltage charging is safe when the charging voltage is lower than the upper limit of the charging voltage (for 12V batteries, this value), even if the charging time is long, it is not dangerous. If necessary, the battery can also work in a floating charge state. 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 post: Analysis of the structural characteristics and model specifications of cylindrical lithium batteries