Comprehensive comparison between lithium iron phosphate battery and lead-acid battery

Performance comparison between lithium iron phosphate electric bicycle and lead-acid electric bicycle battery

After 10 years of development, electric bicycle will gradually return to the road of lightweight, miniaturization and power-assisted mode. Ma Zhongchao, chairman of the China Bicycle Industry Association, said at the 3rd Electric Bicycle Industry Summit Forum that light weighting should be the mainstream trend in the development of electric bicycles.

Many participants believed that the weight of lead-acid batteries was too large, which directly affected the entire vehicle, weight control, the use of lithium-ion battery , can effectively reduce the load of the frame, the quality control of the vehicle. Thus, the lithium-ion battery should be the best power generation electric bicycle.

The industry pointed to the common market For example, a 36V/10Ah lithium-ion battery weighs only 3.5 to 5 kilograms, while a lead-acid battery of the same capacity weighs 12 to 14 kilograms. A

lithium iron phosphate battery refers to a lithium ion using lithium iron phosphate as a positive electrode material. Battery

1. Long life:

The cycle life of lead-acid battery is about 300 times, the highest is 500 times, and the lithium iron phosphate power battery has a cycle life of more than 2000 times. The standard charging (5 hour rate) can be used up to 2000 times. The same quality lead-acid battery is "new half year, old half year, maintenance and maintenance for half a year", up to 1~1.5 years, and phosphoric acid Lithium batteries used under the same conditions, will reach 7 to 8 years considered, four times more cost-effective for lead-acid batteries.

2. Fast high current discharge:

In dedicated charger, 1.5C charging 40 minutes The battery can be fully charged, the standard discharge is 2~5C, the continuous high current discharge can reach 10C, the instantaneous pulse discharge (10S) can reach 20C; the starting current can reach 2C, and the lead acid battery does not have this performance now. 3 large capacity: Has a larger capacity than lead-acid batteries. 5AH-50AN for (monomer). 4. No memory effect:

Rechargeable batteries work under conditions that are often not fully discharged, and the capacity will quickly fall below the rated capacity. This phenomenon is called the memory effect. Like nickel-metal hydride and nickel-cadmium batteries, there is memory, and lithium iron phosphate batteries do not have this phenomenon. No matter what state the battery is in, it can be used with charging, without having to discharge and recharge.

5, small size, light weight: the

Same size capacity of lithium iron phosphate battery volume is 2 / 3 of the lead-acid battery volume is 1/3 of lead-acid batteries. 6, green:

Lead-acid battery electric car lead There is a large amount of lead in the acid battery. If it is improperly disposed after disposal, it will pollute the environment. The lithium material has no toxic and harmful substances. It is considered by the world to be a green battery. The battery is free from pollution during production and use. It has become a hot topic of research.

Therefore, the lithium iron phosphate battery has been included in the “863” national high-tech development plan during the “10th Five-Year Plan” period, and has become a national key support and encouragement development project. With China's accession to the WTO, the export volume of electric bicycles in China will increase rapidly, and electric bicycles entering Europe and the United States now require non-polluting batteries.

7. Safe use:

lithium iron phosphate completely solves the safety hazard problem of lithium cobaltate and lithium manganate. Lithium cobaltate and lithium manganate will cause explosion under strong collision, which poses a threat to consumers' life safety. Lithium undergoes rigorous safety testing and will not explode even in the worst traffic accidents.