Is it true that lithium batteries are more dangerous than lead-acid batteries?

Lithium batteries are really more dangerous than lead-acid batteries? This is not the case. Lithium batteries or lead-acid batteries, which one is more reassuring? In fact, if the internal pressure of the two trams is too large and the safety valve is abnormal, the danger levels of the two trams are the same. If the safety valve on the top of the 18650 battery cell is due to the overcharge of the internal hydrogen evolution, the electrolyte content in the 18650 battery is quite limited, and the amount of hydrogen evolved is also extremely limited, but for the lead-acid battery using dilute sulfuric acid as the electrolyte, if When overcharge occurs, hydrogen evolution inside the battery is serious, and the probability of deflagration is greatly increased. In the case of serious damage to a certain brand of lithium battery pack, the safety valve was activated to release the pressure, and no fire or explosion occurred. From the perspective of battery safety protection, the safety valve is designed on the 18650 battery cell, which can not only release the excessive internal pressure, but also Physically disconnecting the battery from the external circuit is equivalent to physically isolating the cell to ensure the safety of other cells in the battery pack. In addition, lithium battery packs are usually equipped with a BMS protection board, which can accurately control the state of each cell in the battery pack, and directly deal with the problem of overcharge and overdischarge from the root cause. BMS can deal with the problems of overcharge and overdischarge of lithium battery cells to the greatest extent. On the contrary, the safety protection of lead-acid batteries seems to be lackluster except for the safety valve. BMS protection is almost non-existent, and there are some poor quality chargers. The inability to automatically power off is not as safe as the automatic power off of the lithium battery. Lead-acid batteries lack BMS system protection and equipped with inferior chargers. Of course, if you use a lithium battery whose price is similar to that of lead-acid batteries, no one can save you. Finally, if the battery structure is damaged due to an accidental collision, lead-acid batteries seem to be safer than lithium batteries. However, in this level of accident, the battery material has already been exposed to the open environment, and there is no way to talk about explosion. Summary: The battery is not a bomb explosion. It is more caused by inferior products. From the perspective of battery safety redundancy design, qualified lithium batteries and lead-acid batteries can fully ensure the safety of users, and there is no clear safety difference. However, due to the large number of low-end small electric vehicles and scooters on the market, and most of them use poor-quality lithium batteries, they are relatively more prone to accidents. This also leaves consumers with the illusion that lithium batteries are unsafe. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete.