AG10 battery.Strong "Heart" of Electric Vehicles: Analysis of 4 Battery Technologies

　　The development of electric vehicles is inseparable from battery innovation. Many articles have mentioned the current problems faced by electric vehicles such as battery life and inconvenience of charging. While we're complaining, is electric vehicle battery technology really stalling? In fact, this is not the case. Major manufacturers are also constantly innovating the battery quality and capacity of electric vehicles. There are currently several types of batteries on the market: lead-acid batteries, lithium iron manganese phosphate batteries, lithium iron phosphate batteries, lithium cobalt oxide batteries and ternary polymer lithium batteries, etc., and the endurance of electric vehicles has also been improved, so , what is the specific situation of current battery technology?

　　Lead Acid Batteries: Your Most Common Battery

　　Lead-acid batteries are the most common batteries in daily life. Their main advantages are stable voltage and low price. However, they also have problems such as low specific energy, short service life and frequent daily maintenance. In China, lead-acid batteries are widely used in domestic low-speed electric vehicles. In addition to the advantages mentioned above, the price of this battery is also lower than other batteries. Lead-acid batteries are available in 2V, 4V, 6V, 8V, 12V and 24V series, with capacities from 200mAh to 3000mAh. So now let’s calculate the discharge time of the lead-acid battery. Here is a formula that can be used for rough calculation: rated capacity × discharge capacity rate × [1 + temperature coefficient × (ambient temperature - 25)] / discharge current = discharge time. Although lead-acid batteries are cheap, their battery life is relatively low. Therefore, it is not very suitable for electric vehicles to be powered entirely by this kind of battery.

　　Lithium iron manganese phosphate battery: BYD’s battery technology

　　Recently, BYD Chairman Wang Chuanfu said that BYD's latest lithium iron manganese phosphate battery has broken through the energy density limit of traditional lithium iron phosphate batteries and reached the level of ternary materials, and is better than ordinary lithium iron phosphate in terms of cost control. , and has been applied to BYD electric vehicles, and the battery life has been greatly improved.

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