Analysis of the cause of battery swelling

When the charger or the generator on the engine is damaged, its current or voltage may fluctuate, which will cause a violent reaction in the battery, and a large amount of gas will appear, causing the battery to swell. 2. The vent hole is blocked. If the vent hole on the battery filling cover is blocked or not unblocked, the gas that appears when the charging time is too long or the charging voltage is too high will gradually accumulate, which will cause the pressure in the battery shell to become greater and greater. Causes the battery to swell. 3. Too long charging time When the battery charging current is too large or the charging time is too long, a lot of gas will appear. In addition, too much current or too long charging time will also cause the electrolyte temperature to increase rapidly, and this will easily cause the battery to swell. 4. The electrolyte viscosity is too large. If the electrolyte viscosity is too large, it will easily lead to slow penetration into the pores of the electrode plate and increase the internal resistance, so that the voltage drop consumed on the internal resistance during discharge will also increase. This will cause the electrolyte temperature to rise rapidly, and a large amount of gas will appear, which will increase the gas pressure inside the battery and cause the battery to swell. 5. The amount of electrolyte is too small. The battery will reduce the electrolyte after a period of use. At this time, electrolyte or distilled water must be added. After the electrolyte is reduced, overcharging will cause the battery to swell and even cause an explosion. 6. Vulcanization of the battery plate If the battery plate is vulcanized, the cell voltage and electrolyte temperature will rise rapidly during the charging process, the appearance of bubbles is early, and the reaction is violent, which can easily cause the battery to swell . 7. Continue to start the starting motor for too long. When starting the starting motor, the battery must supply a large current to the motor in a short period of time, and a large starting current will inevitably cause a violent chemical reaction inside the battery, and will be accompanied by gas. appear. When the starting motor continues to be used for too long, it will aggravate the appearance of gas, which increases the possibility of battery expansion and cracking. 8. Welding of the tabs and poles of the battery inner plate and the bus bar is not firm. When the tabs and poles of the battery inner plate are not welded firmly to the bus bar, if a large current is discharged, the welding point will be too thin or poor contact. It will cause sparks and ablation, which will cause sparks to ignite the hydrogen-oxygen mixture present in the battery, which will cause the battery to explode. Disclaimer: The articles published on this website are all from the Internet. If there is any infringement, please contact to delete it. 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 article: What problems are faced by hydrogen fuel-powered battery vehicles?