The difference between lead-acid batteries and lithium ion batteries of electric vehicles

Lead-acid battery has simple process and cheap cost, but it has disadvantage of charge and discharge cycle life, which is 300 to 500 times. It also has heavy weight.

The lithium battery with capacity is one of the five lead weight, charge and discharge long life: ternary polymer lithium electricity charge and discharge times, 1000 times the highest electric charging and discharging lithium iron phosphate life over 2000 times. Weakness: the price is high so the penetration rate is less than lead-acid, electric cars and tricycle is 90% with lead-acid batteries.

Electric vehicles use lead batteries or lithium batteries good? Lithium battery, of course, good! Lithium battery is better. Lithium battery has energy volume ratio, and weight than energy, lithium batteries are more than three times that of lead-acid batteries. Lithium battery has smaller volume, lighter in weight and long cycle life. The cycle life of lithium batteries for electric vehicles is in commonly 800 times or more, using lithium iron phosphate cathode material of lithium battery can reach 2000 times or so, beyond the lead-acid battery 1.5 ~ 5 times. This greatly reduces the lithium-ion batteries use cost, prolong the service life and improve the use convenience degree. Second, lithium battery and lead acid batteries contrast 1, battery capacity lithium battery capacity in general in 8 to 10, lead-acid battery capacity of 20 or so.2, travel miles

Does lead-acid batteries or explosive? Lithium battery is more safe to use.

Electric car spontaneous combustion explosion happens quite often, most are the result of the battery charge and discharge, experts explain, lead-acid battery charging time is too long, charging to the end of the poles into effective substances, if I continue to charge again, can produce large amounts of hydrogen, oxygen gas.4% when the concentration of the mixed gas in the air, and had no time to escape, too much, if the vent plug or gas flame will be an explosion, light damage to the battery, or hurt, the loss. That is, once the lead-acid battery overcharge, will increase the risk of explosion. Currently on the market of lead-acid battery didn't do any "overcharge protection", which makes charging especially in charge at the end of a high risk of lead-acid batteries.

Now lithium-ion batteries can very well to avoid this problem, like wisdom lithium dog BMS battery management system can provides the full protection to battery, features include: charge/discharge in high and low temperature protection; Single section charge/discharge voltage protection; Charge/discharge over-current protection; Batteries equilibrium; Short circuit protection, charging to remind and so on. One is to try our best to prolong the service life of the battery, 2 it is to have more to ensure the safety.

Durability:

Lead-acid battery should generally deep discharge within 400 times, with memory, life in two years or so. If you are using free maintenance lead-acid battery, it is important to note the battery fluid loss, less use in general do not need to add distilled water. Lithium batteries, strong durability of slow consumption, put more than 500 times, and there is no memory, general life in 4-5 years.

According to expert introduction, in terms of durability, lithium battery, good seismic resistance fully charged state of battery safety set, with the amplitude of 4 mm, 16.7 Hz frequency vibration for 1 hour, no leakage, no battery swell and burst, open circuit voltage is normal;25 degrees, good resistance to overcharge, fully charged state of battery charge 0.1 CA 48 hours, no leakage, no battery swell and burst, open circuit voltage is normal, capacity to maintain rate is above 95%;, good resistance to high current completely discharge the battery charging status 2 ca 5 minutes 5 seconds, or 10 ca discharge without conductive part of the fuse, no deformation.

Volume and quality of:

General lead-acid battery pack is 16-30 kg weight, volume is larger; Lithium battery is in commonly 2 to 6 kg, the volume is relatively small, so light, is easy to carry. Both in terms of quality, which is good or bad it is difficult to define, consumer can according to their own needs, buying batteries normal manufacturer production.

Price, warranty period:

Mainstream batteries on the market at present is 48 v, if change, lead-acid battery is controlled 700 yuan, the quality assurance period for 1 year; Lithium-ion batteries are relatively expensive, need 1200 yuan, but the warranty period for 3 years.

Driving km:

Is also a 48 v battery, in the case of a full charge, lead-acid battery and lithium battery electric vehicles can travel 30-40 kilometers. The motor speed depends mainly on use size.

Battery capacity:

Lead-acid battery has capacity of about 20 ampere hour; Lithium battery capacity of arbitrary configuration.

Environmental protection:

Issued in 2012, the state after the lead battery industry access conditions, restructured lead-acid industry integration, most manufacturers have adopted internalized into green production without cadmium, arsenic, more environmental protection, energy saving, only during the process of recycling, if improper method may cause pollution; Lithium batteries in terms of production, recycling, relatively more green environmental protection.

1: compression iron cloth (hard!)Lead-acid boss always in line with his strong as he is strong, the wind caresses the hills. He let him cross, moon according to the country for the principle. Lead-acid battery good feed, kills you play, mending a little, can continue to use.

2: the price of Chinese cabbage (cheap!)Lead the eldest was able to vertical and horizontal cell community for many years and sit for the position of the boss because of this reason!

3: recycled recasting (recycled inverse repair) lead-acid battery with recyclable skills, can go to after using bad electric car scrappage shop, the difference can be in a new set of batteries, the losses to a minimum, is a big benefits to users.

Since when it comes to JueXue, that also have a look at the disadvantage of lead-acid battery: big volume weight, battery capacity is limited, and life is short, lead-acid battery generally in a deep discharge within 400 times, with memory, life in two years or so.

1: ancestral gravity, light weight, small size was flying a small of lithium battery compared with the same capacity of lead-acid batteries on the market, is two-thirds the size of lead-acid batteries, lithium battery volume weight is about 1/3 of the lead-acid battery weight. The same volume of li-ion battery is much higher than the capacity of lead-acid battery, weight reduced electric vehicle battery life increase about 10%.

2: health and durable (live) lithium battery is deep knowledge, lithium battery life expectancy is about four years, is about 1.5 times higher than lead acid battery life and charge and discharge more than 500 times, battery no memory, strong vibration resistance.

3: ancestral qigong breathing method, good resistance to overcharge, charge and discharge resistance) lithium batteries from an early age through strange through eight veins, to make it under normal temperature, lithium batteries can be charged 48 hours there will be no accident, such as cell expansion leakage burst capacity in a more than 95%.And under the special charger, can fast charge and discharge.

Lithium battery benefits are many, but its disadvantages are more obvious.

Lithium battery production cost is high, the production equipment expensive labor costs about 40% of the production costs, the price would be about three times that of lead-acid batteries. Three times the price of the price is not high, a slick feel to the person, and lithium batteries cannot be recycled, with broken only dropped, or find a place to bury the, have the thousands of years, dig out the posterity is antique.

To solve the fire explosion is the most important issues for lithium ion battery, especially in the case that consumers cheated by profiteers to buy inferior lithium-ion batteries. Electric cars have bad sealing condition, which will be damp easily and lead to poor contact and hidden danger. But now the technical performances of lithium-ion batteries are also constantly improved. It uses materials with high security. The hidden danger may only be not so severe, and lithium ion battery may become the most popular in the battery world.

The page contains the contents of the machine translation.