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With the introduction of new national standards, the era of lithium-ion batteries has arrived. There are three important categories of lithium-ion batteries for electric vehicles in the market, the first being ternary lithium (currently the most commonly used), the second being lithium iron phosphate, and the third being lithium titanate. So, what are the things to pay attention to when using lithium-ion batteries?

The first temperature, lithium-ion batteries are afraid of high temperatures. Long term exposure to overheated environments can significantly reduce the lifespan of lithium-ion batteries. In severe cases, explosions may occur due to increased internal pressure. Even if there is no explosion, lithium-ion batteries will quickly be scrapped in high heat, mostly due to the high temperature of their working environment.

The second largest current, for example, the 18650 battery cell has a 3C discharge, while your electric vehicle has an 8000W discharge current. The battery cell used is lower than the discharge current of your electric vehicle, which can cause the temperature of the lithium-ion battery to be too high, the current to be too large, and the lifespan to be shortened. There may also be situations of bulging and scrapping. If your electric vehicle has a very high power and a very fast speed, it is recommended to choose a 18650 battery cell with a 10C current. Choosing the appropriate battery cell is obviously very important!

The third reason for fully charged storage is that a ternary lithium-ion battery has a full charge of 4.35V. Currently, the protection boards on the market cut off charging at 4.2V, so many people buy lithium-ion batteries for electric vehicles and claim that they do not have the nominal capacity. In fact, this is the reason. Generally, when storing lithium-ion batteries for electric vehicles for a long time, it is best to fully charge 50% of the TV. For example, when you buy a new phone, many of them only have 50% of the power when turned on. If fully charged and stored for a long time, it will reduce the capacity of lithium-ion batteries. Except for lithium iron phosphate and lithium titanate, which can be stored at full charge, it is also important to choose a high-quality protective plate. The biggest taboo of lithium-ion batteries is overcharge and overcharge. Ternary lithium is scrapped once overcharged, and overcharge will inevitably cause bulging and scrapping.

The fourth suitable charging device should also ensure that the current of the charger and the general current load of the appliance are within the specified range during charging and discharging. Excessive current load can easily cause internal short circuits in the battery, thereby damaging lithium ions and posing safety hazards to the circuit. Similarly, the same principle applies to the voltage of a rechargeable charger. So we also need to pay attention to whether the charger is qualified when using it.

The so-called lithium iron phosphate battery refers to a lithium-ion battery that uses lithium iron phosphate as the positive electrode material. In the early stages of the development of new energy vehicles, lithium iron phosphate batteries have become the preferred choice for major manufacturers due to their superior thermal stability, good safety, and low development costs.

However, with the continuous development of technology, ternary lithium-ion batteries with superior performance have emerged. Compared to them, lithium iron phosphate batteries have a lower energy density. Under the same range, vehicles equipped with lithium iron phosphate batteries have a higher weight, which directly leads to less than ideal energy consumption.

Moreover, the country's requirements for the energy density of new energy vehicles have been increasing year by year. Due to material limitations, the energy density of lithium iron phosphate batteries is difficult to continue improving. Therefore, many manufacturers are gradually turning to the development of ternary lithium-ion batteries.

Ternary lithium-ion batteries refer to lithium-ion batteries that use nickel cobalt manganese lithium potassium ternary cathode materials. Compared with the previously introduced lithium iron phosphate batteries, they have high energy density, reasonable price, and better overall performance, making them the type of battery currently used in most new energy vehicles.

The seemingly perfect ternary lithium-ion battery has also been questioned for its shortcomings. The biggest drawback of ternary lithium-ion batteries is that they decompose at around 200 degrees Celsius. In high-temperature applications, the electrolyte will quickly burn, increasing the risk of self ignition or self explosion in the new battery. With the development of technology, many manufacturers have developed excellent battery management systems, and safety issues have been improved. Their outstanding performance has won the recognition of major automobile manufacturers.

Previously, BYD, a domestic new energy giant that vigorously developed lithium-ion iron phosphate batteries, currently uses ternary lithium-ion batteries in all new energy passenger cars on the market. At present, ternary lithium-ion batteries have become the mainstream battery for new energy vehicles.

Hydrogen fuel cell has always been regarded as the future development direction of new energy vehicle batteries, and the most basic principle of hydrogen fuel cell is the reverse reaction of electrolyzing water. The biggest difference between it and rechargeable batteries is that they do not need to be charged. As long as hydrogen gas is added, when there is no hydrogen gas, it can be charged at a designated location. It is very convenient to use and does not require the same amount of time as charging batteries.

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