Why didn't the car replace the lead-acid battery with a lithium battery?

At -30℃, it is necessary to ensure that the car engine starts reliably, and the maximum current when starting is above 800 amperes; the above two items may be the weakness of lithium batteries. At present, lithium batteries have been used as starting batteries in high-end cars. The reason why it has not been used on a large scale before is mainly due to the following 4 reasons: 1. The cost of conventional lithium batteries is 2 to 3 times that of lead-acid batteries. Therefore, under the operating requirements of maximizing profits, there are no external factors such as market or law. Under the circumstances, the car factory (host factory) did not consider replacing lead-acid batteries with lithium batteries. 2. Technology Lithium batteries start from commercialization, first enter the digital category, and then gradually enter the power use category such as electric vehicles. The start-up of a car has relatively high requirements for battery performance, which can only be met by a high-rate lithium-ion power lithium-ion battery. The lithium battery itself also has a process of continuous maturity, and the maturity of power lithium-ion batteries is also a matter of recent years. In addition, in recent years, hundreds of new energy electric vehicles have contended, but accidents have occurred frequently. The most fundamental safety and cost-effective factors of lithium batteries have discouraged many people who have the idea of u200bu200bbuying a car. However, with the increasing requirements for environmental protection, the maturity of lithium battery technology, and the decrease in cost, it has also begun to be used in a small amount in the field of automobile startup. 3. The safety of lithium batteries The safety of lead-acid batteries is self-evident, as a whole, there are no combustibles. The high-current discharge characteristics of lithium batteries are inherently not good. Will excessive discharge current cause spontaneous combustion or explosion of lithium batteries? These must be considered more importantly than cost. 4. The low temperature characteristics of the battery. Friends who have driven in extremely cold areas in winter should be able to realize how important a good starting performance is! Sitting in a cold car, staying for an extra minute is suffering! The start-up performance of lead-acid batteries will also decline rapidly as the temperature decreases. Therefore, for start-up batteries, low-temperature start-up performance is more important than battery capacity; of course, batteries with larger capacity have better low-temperature discharge characteristics. Disclaimer: Some pictures and content of articles published on this site are from the Internet, please contact to delete if there is any infringement. Previous: Analysis of the important advantages of lithium battery electric vehicles