Introduction of nickel-cobalt manganese nickel-cobalt aluminum ternary lithium battery

With the wide popularity of electric cars, there are a lot of friends have been to ask power battery related problems, Shock as an adventurer, else to watch, but the reliability of equipment of outside risk is the most attention.Today I have hosted a my good friends, talk to people of power battery.

Hello everyone, I am a star of the power battery family small manganese, nickel and cobalt manganeseThe ternary lithium battery(sliding).Our power battery family history can be traced back to 1837.When Robert Anderson in Scotland for carriage on the battery and motor, the successful transformation of the world's first by the electric vehicles.Why are electric cars appear to be so late?Mainly because of life, charging time, the key problems such as security.And our family members, is born in order to solve these problems.

We who are members of the family?

More is knownlithium iron phosphate batteries、Titanium acid lithium batteryAnd my brother and my aluminum nickel and cobalt ternary lithium batteries (NCA).We made up of different elements, so have different abilities and characteristics.Such as batteries, lithium iron phosphate is the best and most stable temperament, but under the same volume stored energy (energy density) enough, will affect the life of the vehicle.lithium titanate battery again, and provide the high power output, it can quickly discharge tanks to bus and power supply.But its energy density is lower, and the raw material and production cost is too high, so the general electric vehicles is not willing to use it.Finally said we are brothers, we also have a good temper, and higher energy density, will also be able to balance the life and stability, so it became the preferred consumer electric vehicle power battery.

I really is a kind of what kind of battery?

Scientifically speaking, the ternary lithium battery is nickel and cobalt element as the anode material, manganese salt or aluminum salt to stable chemical structure of a lithium battery.My advantages it has already been said, here mainly said my temper.Although my temper can also, but if the brain internal short circuit or is hit, piercing, and barbecue, I also will be angry is out of control.So, in order not to make me angry, scientists in metal salts and the choice of the ways of packing and so on under a lot of kung fu.

The stability of choice: aluminum or manganese?

Same as the ternary lithium battery, my brother and I still have different personality and characteristics.Eldest brother aluminum nickel and cobalt production process not only requires high and the cost is high, but the aluminum can rise to improve the chemical stability of the cell cycle, collocation in ternary system, nickel content can be promoted, so as to realize higher battery energy density.But is crystalline structure of the aluminum nickel and cobalt nickel cobalt manganese is not stable, easily in the case of high temperature, occurrence collapse cause thermal runaway, causing risk.My body, by contrast, although difficult to stabilize more nickel manganese element, which lead to the nickel cobalt manganese system energy density is a bit low so life have underperformed the aluminum nickel and cobalt, but containing manganese ternary system better thermal stability, and nickel content ratio is less, so as the power battery is safer.

The choice of the ways of packing: round or square, soft or hard?

Nickel cobalt manganese in my body, after reaching a certain temperature decomposition happens, release oxygen, and oxygen can accelerate the high temperature effect of the reaction of the electrolyte, causing the risk.So I need a more reliable way of packing.There are three kinds of the most mainstream way: cylindrical, square shell type and soft package type.

Cylindrical: batteries packing in close winding way, internal arrangement is more compact, gathered more energy.But because of cylindrical battery is small in size, if you want to provide more energy, requires a large number of single cells to form a battery pack, so it is difficult to guarantee the consistency of the battery.Battery consistency of mismanagement causes a lot of bad results, one of which is increased internal resistance of the internal temperature of the battery is out of control cause dangerous.

Side shell mold: can I rolled the internal materials are more closely, plus there are aluminum shell is not easy to limit inflation and relatively safe.This way of packing can be in internal anti-explosive plug, if there is a thermal runaway situation, will be released from fixed direction of explosion-proof plug expansion air, it is not easy to influence other batteries.

Soft package type: adopting aluminum-plastic film packaging in the structure, because there is no limit to the aluminum shell of space, so under the condition of the same volume can be loaded more energy, most directly and completely.But also because there is no limit to the aluminum shell, battery pack easily blow or deformation, there will be a security risk.

The page contains the contents of the machine translation.