What are the different common batteries for electric vehicles

Lithium-ion batteries can be divided into cylindrical batteries, square batteries, and soft-pack batteries according to the cell breakdown. Lithium iron phosphate batteries have a rated voltage of 3.2V. The batteries used in low-speed vehicles are generally square batteries, but they are only in shape and process. It is not the same, it is used more on electric motorcycles. For example, the safety of a small electric vehicle with a driving speed of 30KM/H is higher than that of a cylindrical battery. Soft pack batteries are also known as lithium-ion polymer batteries. Lithium battery core materials commonly include lithium manganate ion, lithium cobaltate ion, ternary lithium ion, etc., which can be discharged to 1.5V. Not resistant to low temperatures, just connect in series, which is similar to a square battery but heavier than a square battery. Cylindrical batteries have the advantages of mature technology, wide range of applications, variable combinations, and low prices. 18650 batteries are divided into energy storage batteries and power batteries. The important component of the negative electrode is lead; in the charging state, the electrolyte is a sulfuric acid solution. Battery. At present, cylindrical batteries are still the main force of electric vehicle batteries. For large electric vehicles such as electric motorcycles, the important components of the positive and negative electrodes are lead sulfate. The most common one is 18650 batteries, and the important component of the positive electrode is lead dioxide. Cylindrical batteries are divided into lithium batteries and lithium iron phosphate batteries from the positive electrode material. The voltage is generally 3.7V. Only a few electric vehicles will use soft pack batteries as batteries, but they will catch fire or deflagration. Commonly include 3C discharge, 5C discharge and 10C discharge; often used in electric vehicles that require driving speed. Common capacities are 12Ah and 20Ah. Energy storage batteries are suitable for electric bicycles that do not require high discharge current. They are also expensive. 3: The difference between soft pack batteries and cylindrical batteries is not big, while the power cell discharge current When the lead-acid battery is discharged, the electrode is mainly made of lead and its oxide, which is different from the cylindrical battery. 2: Square battery Commonly used square battery cells for electric vehicles are 3.2V lithium iron phosphate square batteries and 3.7V lithium square batteries. The discharge limit is 2.75 or 3.0V. The nominal voltage of a single cell lead-acid battery is 2.0V. A battery is calculated according to how much 1Ah is. The small capacity is only a few hundred mAh and the large capacity has more than 10,000 mAh. The battery life It may be a 50% discount, full charge 3.6V; discharge voltage is limited to 2.5V or 2.0V, lead-acid capacity is generally not large, full charge 4.2V, will not explode like cylindrical batteries, in the northern winter. Lead-acid batteries, the cycle times are about 300-500 times. When using, it is enough to connect a single battery in series to form 48V and 60V. 1: Cylindrical battery common cylindrical battery specifications for electric vehicle batteries: 18650, 32650, two: Lead-acid batteries used in electric vehicles are mostly maintenance-free. The rated voltage of lithium batteries is 3.6V or 3.7V, and the size is generally large and can be charged to 2.4V; 6 single-cell lead-acid batteries are often connected in series to form a nominal 12V lead-acid battery. The capacity of square batteries is generally large. , Such as 50Ah, 60Ah, 80Ah, etc., it is more convenient to form electric vehicle batteries than cylindrical batteries. 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 post: What are the environmental impacts of lithium-ion batteries?