How much is the best amount to charge an electric car each time?

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How much is the best amount to charge an electric car each time? [Copy link]

How much is the most suitable for charging electric vehicles each time
? For electric vehicles, charging is an unavoidable topic. There are always car owners who will ask: When should I charge? What charging frequency is good? How much is the appropriate charge each time? Is it 100%? Today, Sichuan Yingteli Xiaobian will talk to you about these common questions.
Before we start, let's first understand the core of new energy vehicles-"battery". At present, the batteries of new energy vehicles are mainly lithium iron phosphate batteries and ternary lithium batteries. The negative electrode materials of both are graphite, and one of the differences lies in the battery "positive electrode". As the name suggests, lithium iron phosphate batteries use lithium iron phosphate as the positive electrode material, while ternary lithium batteries use nickel, cobalt, manganese (or aluminum) and lithium as the positive electrode materials. Different materials, the performance of the two is also different.
Generally, after a lithium iron phosphate battery is fully cycled and charged 2,000 times, the capacity is still not less than 80%. At the same time, regardless of internal or external damage, the battery will not explode; ternary lithium batteries have high energy density, high charging efficiency, and are more suitable for "fast charging". In an environment of minus 20°C, ternary lithium batteries can release more than 70% of their capacity, while lithium iron phosphate batteries can only release about 55% of their capacity.
After understanding the structure of the "battery", let's take a look at charging. The battery life is determined by the complete cycle of the battery-after 100% use, it is considered a complete charging cycle. For example, after setting off after fully charging, after driving, 40% of the power is used, and 60% of the power is left. Even after it is fully charged, the next time you use electricity, you need to use 60% to complete a charging cycle. Therefore, from this point of view, we don't need to pursue "full" every time we charge new energy vehicles. And from the perspective of structure, for power batteries, the best state is to keep the power at around 20%~90%, which can significantly increase the battery life.

Therefore, from the above two perspectives, new energy vehicles do not need to be fully charged every time. Charging as you use it and shallow charging and shallow discharge are the best ways. Especially for daily commuting in the city or short trips, you only need to meet the mileage required for travel, and charge regularly to avoid excessive discharge.
With the advent of summer, temperatures continue to rise in various places, especially during the day, under the sun, many car owners are worried that charging outdoors, especially "fast charging", will cause the temperature of new energy vehicles to be too high during the charging process, affecting the battery life and even causing safety hazards. In fact, regarding this point, the built-in BMS battery management system of electric vehicles will protect the battery by adjusting the balance of electrons in the battery, battery temperature, charging voltage and current, etc., to minimize damage to the battery. Therefore, there is no need to worry too much when charging in the summer.
Now electric vehicles and charging and other related technologies are becoming more and more mature. In daily use, as long as you choose regular charging equipment and follow the principle of shallow charging and shallow discharge, regular charging will basically not cause problems.
The above content is from Sichuan Yingteli. Sichuan Yingteli Electronic Technology Co., Ltd. has four production bases in the country. The Sichuan factory is located in Building 6, No. 213, Lihong Road, Shizhong District, Neijiang City, Sichuan Province, with a plant area of 32,000 square meters. The company has independent intellectual property rights for AC and DC charging piles, with an annual output of more than 20,000 DC charging piles.