Development History of Lithium Battery

The powerful lithium-ion battery refers to a lithium-ion battery with a capacity of 3AH or more. At present, it refers to a lithium-ion battery that can be driven by discharge to equipment, devices, models, vehicles, etc.. Due to the different objects of use, the battery capacity may not reach the level of the unit AH.

(1) Battery cover

Lithium power

Lithium power

(2) The positive-the active substance is lithium cobalt oxide or other series of materials

(3) diaphragm-a special composite membrane

(4) Negative-the active substance is carbon

(5) Organic electrolytes/electrolytes

(6) Battery shell

The advantages of lithium-ion batteries we often refer to are for traditional nickel-cadmium batteries(Ni/cd) and nickel-metal hydride batteries(Ni/cd). So what's so good about lithium-ion batteries? Compared with lead-acid, nickel-metal hydride and nickel-cadmium batteries, it can basically be summarized as:

(1) High operating voltage(3 times the hydrogen-nickel battery of nickel-cadmium batteries);

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

(3) Small size(30 % smaller than hydrogen-nickel batteries);

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

(5) Long cycle life(cycle times are about 500-1000 times);

(6) Low self-discharge rate(only 8 % per month self-discharge);

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

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

As a kind of secondary battery, the power lithium battery has the common characteristics of other secondary batteries: it can be used repeatedly for charging and discharging and recycling. In general, the use of power cells has to go through lead-acid batteries, nickel-cadmium batteries, nickel-metal hydride cells, and lithium batteries, and eventually to newer batteries such as fuel cells.

Lithium power is mainly used in the start-up of various internal combustion engines such as vehicles, ships, and aircraft, lighting, energy storage, uninterrupted power supply, mobile communications, portable electric tools, and electric toys.

In recent decades, due to the rapid development of the transportation, communications, 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 cells has become more and more frequent. Lithium power and major power cells have shown common development. 1] And ...

In terms of domestic development, similar products that currently compete with power lithium-ion batteries include fuel cells, supercapacitors, lead-acid batteries, nickel-metal hydrogen batteries, and solar cells. Cadmium-nickel batteries, iron-nickel batteries, metal oxide batteries, zinc and silver batteries, zinc and nickel batteries, and nickel-metal and hydrogen batteries have also formed certain threats to the development of dynamic lithium electricity 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. According to projections, 2010-2013 is the rapid growth period of lithium battery electric vehicles, with an average annual compound growth rate of 124.78 %, and surpassed nickel-metal hydride battery electric vehicles in 2012. This has provided a unique opportunity for domestic battery manufacturers. Companies at home and abroad should use their own technological advantages to speed up the industrialization of power batteries with independent intellectual property rights and do a strong new energy industry.

Power batteries are power sources for tools, mostly batteries that power electric cars, electric trains, electric bicycles, and golf carts.

It is mainly different from the starting battery used for starting a car engine. More valves are used for sealing lead-acid batteries, open tubular lead-acid batteries, and lithium iron phosphate batteries.

High energy and power;

High energy density;

The high rate of partial charge(HRPSOC) recycling;

The operating temperature range is wide(30 ~ 65 °C);

Long service life, required 5-10 years;

Safe and secure.

The super-long life, long-life lead-acid battery cycle life is about 300 times, the highest is 500 times, and Shandong Haiba Energy Group Co., Ltd. production of lithium iron phosphate power cells, the cycle life of more than 2,000 times, standard charging(5 Hours rate) can reach 2,000 times. The lead-acid batteries of the same quality are "new half year, old half year, maintenance and maintenance for another half year", and the maximum time is 1 to 1.5 years, while lithium iron phosphate batteries will be used under the same conditions and will reach 7-8 years. Taken together, the performance price will be more than four times that of lead-acid batteries. [ 4]

Using safety, lithium ferric phosphate completely solves the safety problems of lithium cobalt acid and lithium manganate. Lithium cobalt acid and lithium manganate will cause explosions under strong collision and pose a threat to the safety of consumers. lithium iron phosphate does not explode even in the worst traffic accidents after rigorous safety tests.

Large current 2C can be quickly charged and discharged. Under a dedicated charger, 1.5 C can be charged within 40 minutes to fill the battery. The starting current can reach 2C, and lead-acid batteries now do not have this performance.

High-temperature resistance, lithium iron phosphate thermal peak up to 350 °C ~ 500 °C while lithium manganese and lithium cobalt acid only around 200 °C.

Large capacity.

No memory effects.

Small in size and light in weight.

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