Is it safe to use lithium batteries in RVs?

Compared with lead-acid batteries, lithium batteries are still a bit inferior in safety. Have you seen the spontaneous combustion of lithium batteries, have you ever seen the spontaneous combustion of lead-acid batteries? Even if the lead-acid battery explodes due to gas evolution, it will not spontaneously ignite. Taking a step back, traditional big-brand RV manufacturers have not abandoned lead-acid batteries. Lead-acid batteries have a history of 150 years, and the benefits are high safety factor and high stability. Traditional RV manufacturers do not like to use lithium batteries. Because even if there is a risk of asking about one part, big brands dare not take risks, perhaps because of an incident that destroys a brand. On the contrary, some new-style small manufacturers can choose lithium batteries for their batteries in order to meet the needs of customers. The benefits of lithium batteries compared to lead-acid batteries are indeed too much! For example, the energy density is high, and the lithium battery of the same capacity is smaller and lighter. For batteries of the same size, lithium batteries have a larger capacity. The capacity density is high. The lithium battery can use the 48V power supply system, and the lithium battery can discharge at a large current. After the 48V lithium battery + 48V inverter is selected, it can supply a larger capacity 220V power supply and can use high-power electrical appliances. This is undoubtedly the biggest temptation for RV enthusiasts: large capacity and large enough output power! From the fires and spontaneous combustion incidents of many new energy cars, people know that lithium batteries can spontaneously ignite under certain conditions. This is the biggest disadvantage of lithium batteries, especially ternary lithium batteries. The lithium iron phosphate battery should be more stable, and it is the first choice for the replacement of lithium batteries in RVs. Whether it is ternary lithium or lithium iron phosphate, the disadvantage is that once thermal runaway occurs, the battery will burn violently and it is difficult to extinguish. Therefore, this type of battery must be equipped with a high-precision battery maintenance board, and electric cars are specially equipped with a battery solution system. The intention is to guard against thermal runaway of the battery as much as possible, and to maintain the battery to maximize the maximum control accident. Tesla's battery solution skills are recognized as NB, but some time ago there was a Tesla in the parking lot and spontaneously ignited without warning! It is neither impacted by external forces nor in a charging state, which means that no matter how good the power supply solution software is, the battery safety cannot be 100% guaranteed. These batteries are assembled purely by the seller, and the battery maintenance board is also a purchased product. It can be sold in a stainless steel box! It is difficult to have numerous safety tests! As can be seen from the data in the above figure, the volume of lithium batteries is really very small. The weight is much lighter than the lead-acid battery, and the capacity is larger. Theoretically speaking, the use of low-voltage lithium battery packs is far less dangerous than high-voltage battery packs for electric cars. Low-voltage battery packs use a small number of single cells, most of which use four strings to achieve 12V voltage and then N groups of batteries are connected in parallel to expand capacity. The 12V voltage is much less dangerous than the 500V battery pack. After using the stainless steel case, the safety factor will definitely improve. Once the battery is found to be abnormal, just throw the battery box straight out of the car. This type of battery is suitable for players and electronic enthusiasts, and it is best to have a simple maintenance talent. Monitor the discharge current, charge current size, know how the balance is, how many strings and parallels, charge voltage, maintenance voltage, maintenance circuit principle, after the cell is damaged, it can detect the defective monomer and have the talent to replace it. The advantage of lead-acid batteries is that they are cheap. Even if the batteries are scrapped for two years, they can be sold back for 1/3 of the cost of new batteries. Although the lithium battery claims to be able to be used for eight years, it should be noted that the problem of capacity degradation. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.