Will lithium batteries quickly replace lead-acid batteries?

As we all know, compared with lead-acid batteries, lithium batteries have the advantages of high energy density, long life, small size, and light weight. After the announcement of the new national standard for electric vehicles, many people think that lithium batteries will soon replace lead-acid batteries, but in fact, this is not the case. Lead-acid batteries are still the mainstream in the market. Why? Battery.jpg1. The cost advantages of lithium batteries are not prominent. In terms of cost, the cost of lead-acid batteries is undoubtedly the lowest, whether it is electrode materials, electrolyte, or assembly environment requirements, are far lower than lithium batteries. According to many dealers selling lithium electric vehicles, under normal circumstances, the price of lithium batteries is 1.5-2.5 times that of lead-acid batteries, but the service life is not good, and the maintenance rate is also high. 2. The maintenance cycle is too long. Once the maintenance of the lithium battery fails, it will take about a week or even longer. The reason is that the dealer cannot repair or replace the defective battery inside the lithium battery. It has to be returned to the manufacturing company, and the manufacturer disassembles and assembles. And many lithium batteries cannot be repaired. 3. Compared with lead-acid batteries, the safety is that lithium batteries cannot withstand drops and impacts during use. After piercing the lithium battery or severely impacting the lithium battery, the lithium battery may burn and explode. Lithium batteries have relatively high requirements for chargers. Once the charging current is too large, the protective plate in the lithium battery may be damaged and cause burning or even explosion. Large-brand lithium battery manufacturers have a higher product safety factor, but the price is also higher. The products of some small lithium battery manufacturers are cheap, but the safety is relatively low. 4. Environment At present, most of the voices in the society say that lead-acid batteries pollute the environment and lithium batteries are environmentally friendly. In fact, this is a big misunderstanding. Previously, due to too many small lead-acid battery factories in the south, they did not pay attention to environmental protection and discharged them. In addition, the country wants to reduce the scale of lead-acid batteries and vigorously develop new energy sources. Therefore, the media's arguments are also strongly targeted, but this is not the case. At present, the best part of lead-acid batteries in relation to lithium batteries is the recycling mechanism. In fact, lead-acid batteries are definitely an evergreen tree in the chemical power industry. It has been more than a hundred years since its birth. In recent years, although it has been said that it should be replaced by lithium batteries, I think it cannot be replaced in some areas for the time being. , At least three to five years is impossible. The new national standard for electric vehicles stipulates that the weight limit of the entire vehicle, including the battery, should not exceed 55 kilograms. At the same time, the new national battery standard also makes strict regulations on battery technical conditions, product quality, and product specifications: 1. Require the battery to be lightweight design to increase energy density instead of weight; 2. Mandatory setting of battery cycle charging life. Less than 350 times; 3. Comprehensively improve the technical threshold of lead-acid battery access. Will lead-acid batteries become subjugated under the pressure of current policies? In fact, the energy density of driving lead-acid batteries is indeed very low, generally only within 45Wh/kg. In other words, the same volume and volume, compared with solid all-lithium batteries, is only one-ninth; compared with liquid (positive ternary materials) lithium batteries, it is only about one-eighth; compared with ordinary lithium batteries at this stage The comparison can only be about one-quarter or one-third; in fact, lithium batteries are used for electric vehicles under national standards, and both the mileage and the car series often have a great development trend. Indoor space. 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. Previous: Analysis of the performance advantages of energy storage lithium batteries