How to replace the lead-acid battery of an electric vehicle with a lithium battery

1. Know what kind of battery you are currently using in electric vehicles, the discharge capacity and rate of the battery (what is the maximum discharge); the proposed replacement of the lithium battery is the same as the original electric vehicle battery in terms of discharge; 2. Know the maximum allowable electric vehicle motor What is the power? It is proposed that the maximum discharge power of the lithium battery should be lower than the maximum allowable power of the electric vehicle motor, and beware of the motor burnout; 3. Know the electric vehicle wiring wire specifications, check the maximum current allowed by the wire, and beware that the current is too large to burn the wire; 4 , Know the current allowable limits of other electronic components of electric vehicles, and propose that the current should be less than the allowable current limit; 5. The appearance size of lithium batteries, generally speaking, lithium batteries with the same capacity and discharge are much smaller than lead-acid batteries. Therefore, there will be gaps in the place where the battery is placed in the electric vehicle, which can be filled with insulating material. Beware of the loose battery, frequent or excessive vibration, and safety accidents; 6. The choice of lithium battery capacity is generally recommended to choose the same capacity as the original battery Yes, it is generally recommended to choose less than twice the capacity. If the capacity is too large, safety accidents may occur; 7. The choice of lithium battery types, currently there are several types of lithium batteries for electric vehicles that can be considered. 18650 lithium battery, lithium iron phosphate battery and polymer lithium battery. Generally speaking, if the lithium battery cells are new, polymer lithium batteries have the highest price, followed by lithium iron phosphate batteries, and 18650 lithium batteries are the lowest, because polymer lithium batteries have a higher density and energy ratio. Under the capacity specification, the weight is much lighter; in terms of safety performance, lithium iron phosphate batteries are better, followed by 18650 lithium batteries. Therefore, it depends on your own economy to make a choice. 8. In terms of battery voltage, it should be noted that when the original lead-acid battery is replaced with the lithium battery, it must be consistent with the original car battery voltage, the capacity can be increased, and the battery life will be longer. Even with the same capacity, the range and life of lithium batteries will be longer. Secondly, it should be noted that the original charger cannot be charged with lithium batteries, and a special charger must be purchased separately or customized. 9. Will the battery life be longer if the lead-acid battery of an electric vehicle is replaced with a lithium battery? Under normal use, although the high-current discharge characteristics of lithium batteries are short-board, frequent start-ups on congested roads will affect the battery life, but if the purchased lithium batteries are processed by a regular manufacturer and equipped with a bms management system, the life will be more Much longer than lead-acid batteries. 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 post: Which one is better for soft pack lithium batteries than aluminum shell lithium batteries?