Power lithium battery definition

A power lithium-ion battery is a lithium-ion battery with a capacity of 3 AH or more. At present, it refers to a lithium-ion battery that can be driven by a device, a device, a model, a vehicle, etc., and the capacity of the battery may not be achieved due to the use of the object level of the unit AH.

(1) Battery covers

Power lithium battery

(2) The positive electrode----active material is lithium cobalt oxide or other materials

(3) Separator----a special composite membrane

(4) Negative electrode----active material is carbon

(5) Organic electrolyte / electrolyte

(6) Battery case

The advantages of lithium-ion batteries we often say are for traditional nickel-cadmium (Ni/cd) and nickel-hydrogen (Ni/cd) batteries. So, where is the lithium-ion battery? Compared with lead acid, nickel metal hydride and nickel cadmium batteries, it can be basically summarized as:

(1) The working voltage is high (three times that of the nickel-cadmium battery hydrogen-nickel battery);

(2) Larger specific energy (up to 165WH per kilogram is 3 times that of hydrogen-nickel battery);

(3)Small volume (30% smaller than hydrogen-nickel battery);

(4) Light weight (50% lighter than conventional batteries);

(5) Long cycle life (the number of cycles is about 500-1000 times);

(6) The self-discharge rate is low (only 8% per month);

(7) No memory effect (electrical charge and discharge depth, does not affect the capacity and life of the battery);

(8) No pollution (no toxic substances in the battery material).

Power lithium battery is a kind of secondary battery and has the commonality of other secondary batteries: it can be charged, discharged and recycled multiple times. In general, the use of power batteries has experienced lead-acid batteries, nickel-cadmium batteries, nickel-hydrogen batteries and lithium batteries, and eventually developed into newer batteries such as fuel cells.

Power lithium battery is mainly used in the starting of various internal combustion engines such as vehicles, ships and airplanes, lighting, energy storage, uninterruptible power supply, mobile communication, portable power tools, and electric toys.

In recent decades, due to the rapid development of the transportation, communication, and computer industries, the product series, product types, and product performance of power batteries have undergone tremendous changes to meet the needs of different uses. The cross-use or alternative use of various types of power batteries is more and more frequent, and the power lithium battery and the main power batteries show a common development situation.

As far as domestic development is concerned, the current similar products that compete with power lithium-ion batteries include fuel cells, super capacitors, lead-acid batteries, nickel-hydrogen batteries and solar cells, cadmium-nickel batteries, iron-nickel batteries, and metal oxide batteries. Zinc-silver batteries, zinc-nickel batteries, and nickel-metal hydride batteries have also formed certain threats to the development of power lithium batteries in some traditional fields. During the "two sessions" in March 2010, the support policy for new energy vehicles once again became the focus of market attention. It is predicted that 2010-2013 is the rapid growth period of lithium battery electric vehicles, with an average annual compound growth rate of 124.78%, and surpassed NiMH battery electric vehicles in 2012. This provides a rare opportunity for domestic battery manufacturers. Domestic and foreign companies should use their technological advantages to accelerate the industrialization process of power batteries with independent intellectual property rights, and strengthen and expand the new energy industry.

The power battery is the power source that provides the power source for the tool, and refers to the battery that powers the electric car, the electric train, the electric bicycle, and the golf cart.

It is mainly distinguished from a starter battery for starting a car engine. Valve-sealed lead-acid batteries, open-tube lead-acid batteries, and lithium iron phosphate batteries are often used.

High energy and high power;

High energy density

Recycling of high-rate partial state of charge (HRPSOC);

Wide operating temperature range (30~65°C);

Long service life, requiring 5-10 years;

Safe and reliable

Automobile and motorcycle industry: mainly to provide power for the ignition of the engine and the use of in-vehicle electronic equipment;

Industrial power system: It is used for power transmission substation, providing closing current for power units, providing backup power for public facilities and power supply for communication;

Electric vehicle and electric bicycle industry: It replaces gasoline and diesel as a driving power source for electric vehicles or electric bicycles.

Lithium battery

Lithium-iron battery is a new green high-energy chemical power source that was launched by American Yongji Company after 2000 and has been successfully marketed. It shows excellent performance in electronic equipment and electric toys that are used in high-energy and high-power power supplies performance. When the medium discharge current is above, the discharge time of the lithium iron battery can reach about 6 times that of the alkaline manganese battery; compared with the nickel hydrogen battery, the discharge voltage platform has a significant advantage in storage time.

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