Introduction to battery explosion

The battery explosion generally has the following situations: 1. The overcharge explosion protection circuit is out of control or the test cabinet is out of control so that the charging voltage is greater than 5V, causing electrolyte analysis, a violent reaction occurs inside the battery, the internal pressure of the battery rises rapidly, and the battery explodes. 2. The overcurrent explosion protection circuit is out of control or the test cabinet is out of control, so that the charging current is too large and the lithium ions are too late to be inserted, and lithium metal is formed on the surface of the pole piece, penetrates the diaphragm, and the positive and negative poles are directly short-circuited and cause an explosion (rarely). 3. Explosion during ultrasonic welding of plastic case. When ultrasonic welding of plastic case is caused by the device, the ultrasonic energy is transferred to the battery core. The large ultrasonic energy causes the internal diaphragm of the battery to melt, and the positive and negative electrodes are directly short-circuited and an explosion occurs. 4. Explosion during spot welding. Excessive current during spot welding caused serious internal short circuit to explode. In addition, during spot welding, the positive electrode connecting piece was directly connected to the negative electrode, causing the positive and negative poles to explode after a straight short-circuit. 5. Over-discharge explosion Battery over-discharge or over-current discharge (above 3C) easily dissolves and deposits the negative electrode copper foil on the separator, causing the positive and negative electrodes to be directly short-circuited and explode (rarely). 6. Explosion during vibration drop The internal pole piece of the battery is misaligned due to severe vibration or drop caused by the battery, and it will explode due to a serious short-circuit in a straight line (a rare occurrence). 6. Low battery 3.6V platform 1. The detection platform is low due to the inaccurate sampling of the test cabinet or the unstable test cabinet. 2. The environment temperature is too low and the platform is low (the discharge platform is greatly affected by the environment temperature). Disclaimer: Some pictures and contents of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous article: What should I pay attention to about the use and maintenance of fpv batteries?