Shallow analysis power battery

　　Throughout the history of power battery development, there are basically only two development paths. I call it "chemical methods" and "physical methods", that is, the evolution of battery materials and battery loading technology. Let's talk about their own characteristics in detail below.

　　"Chemical Method" -Endonation of battery materials

　　Now, the power batteries we often hear are divided into: lithium cobaltate (LICOO2), lithium manganate (limn2O4), nickel cobalt lithium manganate (LinimnCoo2 or NMC), lithium nickel cobalt aluminate (Linicoalo2 or NCA) Lithium iron phosphate (LIFEPO4), lithium titanate (li4Ti5O12). The lithium iron phosphate and nickel cobalt lithium (ternary lithium) in the meantime are more common in us. However, although the material elements are different, the overall internal structure of the lithium battery is the same. Generally speaking, the structure of the battery is divided into positive materials, electrolytes, diaphragm, and negative materials in order. The lithium iron phosphate and lithium nickel cobaltangrite mentioned earlier are the positive electrode materials of the battery, that is, the specifications of different types of batteries, and the negative electrode material is graphite or silicon.

　　So, what is its homework principle? Simply put, the entire operation process of lithium batteries can be said to be a "migration" process of lithium ions.

　　When the positive electrode material of the battery generates a lithium ion, these lithium ions from the positive pole "swim into the electrolyte" through the electrolyte "through the" small hole in the diaphragm and bend the curved small holes. The binding of the electrons running to the negative electrode through the external circuit to ensure the balance of the positive and negative electrode, and the electrons running outside this are the electrical energy we use. Therefore, because the shape of the negative electrode material is a multi -layered structure, lithium ions can be stored between the gaps at the level, as the hierarchy of the refrigerator can store the same food.

　　Generally speaking, the positive electrode material of the battery is an important specification for choosing the overall energy density and temperature resistance of the battery. Earlier, we talked about the lithium iron phosphate and ternary battery on the market, and what are the two batteries of the positive electrode materials?

　　What are the differences between power batteries and lithium batteries?

　　1. Different properties

　　Power batteries are a large category. A variety of batteries can be attributed to power batteries, while lithium batteries are a specific type of battery, and they are also attributed to one of the power batteries.

　　2. Different use scenarios

　　Power batteries are mostly used as the source of power for transportation, such as new power cars, motorcycles, etc., while lithium batteries are mostly powered by consumer electronics such as mobile phones, laptops, etc., but there are also lithium batteries for power batteries, such as ternary lithium batteries. And lithium iron phosphate battery.

　　3. Different weight and density

　　Because the power battery needs to be stored very much, a power battery is often composed of multiple monomer batteries. The overall weight and density are heavier. Most of the lithium batteries for consumer electronics are used. The energy density and weight of a single single battery are not as good as power batteries.

　　4. Different discharge power

　　Because the demand for energy with the transportation tools of power batteries is very large, the discharge power of the power battery is much larger than that of ordinary lithium batteries, and at the beginning of the plan, the power battery can accept the discharge multiplication of more than 50C or more, and and the power battery, and the discharge multiplier of more than 50C or more, and the power battery can accept the discharge multiplier of more than 50C or more. The upper limit of the lithium battery can only accept the discharge multiplier of 2.5C.

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Shallow analysis power battery