What is the main difference between lithium iron phosphate batteries and ternary batteries?

If you want to understand what kind of battery is better, we need to know more about the batteries.

The so-called lithium iron phosphate batteries, is used as the anode material of lithium iron phosphate lithium ion batteries. The characteristics of this kind of battery are not including precious metal elements (such as cobalt, etc.).Because do not contain precious metal materials, the cost of raw materials of lithium iron phosphate battery can be compressed very cheap. In actual use, lithium iron phosphate battery with high temperature resistance, stability is strong, cheap, circulating the advantage of better performance.

The ternary lithium battery is refers to the use of nickel cobalt manganese acid lithium as the anode material, graphite as the cathode material of lithium battery. Unlike the lithium iron phosphate, ternary lithium battery voltage platform is very high, which means under the same volume or weight, ternary lithium battery than power, greater than power. In addition, in the big charge ratio, and low temperature resistance, etc., the ternary lithium battery also has a great advantage.

I've always thought, technology is not good or bad, or, or only applicable to different product or environment. Theory of single cell, also do not have the so-called less who better. Only apply to the actual use scenario, three yuan compared to lithium iron phosphate batteries, lithium-ion batteries more adapt to the present and future of household electric cars.

Currently on the market more common way of charging for constant current constant voltage charging. General in charge at the beginning of the first USES the constant current charging, the current is bigger, the charging efficiency is relatively higher. And after the voltage reaches a certain value, reduce the current to constant voltage charging, so that we can make the comparison of battery is full. In the process, constant current charging ratio with a total capacity of the battery capacity, is called a constant current ratio. It is to measure a set of battery charging efficiency in the process of charging the key values. Usually shows that the greater the percentage in the constant current phase into the higher power, also it shows that the battery charging efficiency is higher.

Can be seen from the table, the ternary lithium battery and lithium iron phosphate battery charging below 10 c, constant current ratio has no obvious difference, more than 10 c ratio when charging, lithium iron phosphate batteries constant flow rate reduce rapidly, charging efficiency rapidly reduced.

Fourth, cycle life can be at ease

For a family car, and ternary material lithium iron phosphate power battery rated cycle life are far more than the actual user habits and so on the service life can be at ease completely. With bak battery current high capacity battery 18650, for example, in the charge and discharge cycle after 1000, more than 90% of the battery capacity can still keep in the original. Because the author itself is the electric car owners, only the coldest winter of more than 1 months for the whole year, frequent charging when opening the warm wind to reach 2 days, the rest of the time the basic charge 3-4 days. Assume that charging to calculate an average of 3 days all the year round, need to use 1 year of about 6 times, cycle life about eight years to 1000 times after use, it also basic at present, more than the average consumer to change cycle.

Five, the safe enough material and process

Hardest part of the traditional internal combustion engine car is contains the huge energy of the fuel, ignition point or explosive of low liquid fuels like gasoline once leak is very easy to cause great potential safety hazard. Power battery and new energy vehicles, after complete battery management system (BMS) monitoring, each battery can get the most accurate control, preventing accidents.

1, lithium iron phosphate batteries: refers to the use of lithium iron phosphate as the anode material of lithium ion batteries. Lithium ion battery anode materials mainly have cobalt acid lithium, lithium manganese acid lithium, nickel, ternary material, lithium iron phosphate, etc. The cobalt acid lithium is at present most of the lithium ion battery cathode material.

2,The ternary polymer lithium battery: is correct material USES lithium nickel manganese cobalt ternary cathode material of lithium batteries, lithium ion battery cathode material has a lot of kinds, mainly include cobalt acid lithium, lithium manganese acid lithium, nickel, ternary material, lithium iron phosphate, etc.

3, embody the two different material, purpose, process.

Cell is a kind of energy conversion and storage devices it through response to chemical energy and physical energy into electrical energy.

Battery is a kind of chemical power source, it is composed of two different components of the electrochemical activity of the electrode form a cathode respectively, two electrode immersion in the electrolyte can provide media transmission, when connected to an external carrier, to provide by converting its internal chemical energy.

Lithium iron phosphate batteries and ternary material system of battery, lithium iron phosphate is 3.2 V voltage platform and cycle life of more than 2000 times, three yuan battery is 3.6 V voltage platform and cycle life of different manufacturers, different models and process, there are some 500 - cycle, some more than 1000 cycles. Good high temperature performance of lithium iron batteries, three yuan battery low temperature performance is good. Security this piece, lithium iron better. Some discharge data, you can refer to it.

In 18650 battery products, for example. In monomer batteries craft, Bick choose configuration, respectively, in is the cathode protection additive and reactive additives, to prevent the electrolyte decomposition cause security problems. At the same time adding ceramic diaphragm and negative safety protection means such as ceramic coating, from the source control the produce of the accident. In addition, Bick small cylindrical 18650 battery group mode, keep enough safety distance between each battery, make sure that the single battery accident will not affect other batteries.

The ternary lithium batteries are dominant power battery market in the future

In the field of electric vehicles, tesla in the United States has always been a measure of many domestic automakers. But with the strength of the traditional car companies develop new energy vehicles, BMW i3 launch has become a textbook example. It is interesting to note that both models have a ternary lithium battery as the power battery. In contrast, the domestic market, many car makers such as Jianghuai, BYD, Beijing also began its original use lithium iron phosphate battery models change ternary lithium battery.

Or that sentence: technology regardless of good or bad, only suitable or not suitable. Car companies at home and abroad for the battery type selected "consistent" is definitely not a coincidence. Believe in the near future, the batteries of electric cars market will reshuffle, ternary lithium batteries because of its low temperature resistance, high energy density, high charging efficiency good cycle life, and more features such as security, will also gain a foothold in new markets.

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