Which is safer, lithium battery electric vehicle or lead-acid battery electric vehicle?

①Lithium batteries are designed with safety valves, which can not only release excessive internal pressure but also physically disconnect the battery from the external circuit, which is equivalent to physically isolating the battery cell to ensure the safety of other cells in the battery pack. In addition, the lithium battery pack is 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. On the contrary, lead-acid batteries lack BMS system protection. In terms of safety protection, lead-acid batteries seem to be lackluster except for the safety valve. BMS protection is almost non-existent. Many inferior chargers cannot even be powered off after overflow. The safety guarantee is similar to lithium. The battery is a far cry. ②The lithium battery charger will catch fire if it is overcharged out of control, and it cannot be soaked in water. If the lithium battery pack cannot get in or out, the battery pack will be discharged internally. The battery pack will be damaged, and a strong squeeze impact will short-circuit and explode. The lead-acid battery charger is out of control. Overcharged batteries will swell at high temperature. The battery will fail. The battery will be scrapped but will not catch fire. Soaking in water for a short period of time can basically be ignored. Easy to swell, the battery basically has no fire problems. ③The biggest safety hazard of lead-acid batteries lies in their constituent materials. The electrodes of lead-acid batteries are mainly made of lead and its oxides, and the electrolyte is a sulfuric acid solution. The stability of these constituent materials is not very high. If leakage or explosion accidents occur, the damage caused will be much higher than that of lithium batteries. Lithium electric vehicles have many advantages, but at present, lead-acid electric vehicles are the mainstay. The most important factor is the imperfection of lithium battery technology. Although some lead-acid giants and electric vehicle giants have begun to develop lithium battery products, they are still a new product. Many companies are constantly exploring and exploring the areas involved, and the initial products may not reach the stage of maturity. 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. From a safety point of view, lithium batteries are much inferior to lead-acid batteries. Overcharge may explode, and if the lithium battery is spent, it cannot be recycled like lead-acid batteries. The price is much more expensive than lead-acid batteries. Lead-acid batteries and lithium batteries have their own advantages. Absolutely speaking, who is good and who is bad, how we choose between lead-acid batteries and lithium batteries, depends on our actual situation. 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: How to repair 18650 lithium battery pack battery