What are the advantages of lithium batteries over lead acid batteries!

Which is better, lithium battery or lead-acid battery?

Each has its own advantages and disadvantages.

Advantages of lead-acid: low cost, mature technology and high safety.

Disadvantages: The specific energy of volume and weight are not as good as lithium batteries, that is to say, under the same volume or weight, they are not as high as the energy stored in lithium batteries, and it is easier to pollute the environment.

The advantages of lithium batteries: the volume specific energy and weight specific energy are much higher than the lead-acid battery, the single battery voltage is higher, and the total voltage can be obtained after less batteries are connected in series, which is more conducive to the motor drive of electric vehicles.

Disadvantages: The cost is relatively high, and the security is slightly worse, so additional BMS needs to be configured to increase security.

Now the common electric vehicle battery on the market is lithium battery and lead-acid battery, whether it is lead-acid battery or lithium battery, they have their own unique advantages and disadvantages, so there is no better way to say, can only say which is more suitable for themselves, after all, everyone's use is different, it is recommended to refer to the advantages and disadvantages of lead-acid battery and lithium battery, combined with their actual use, choose a more suitable electric vehicle battery. Here are the pros and cons of each:

Advantages of lead-acid batteries:

1. Good safety performance. Lead-acid batteries are easy to feed, let you fall and beat, repair a little, and you can continue to use.

2. Cheap. Lead-acid battery** is about 1 3 of lithium-ion batteries, which shows that its ** is very low.

3. Reversible repair. Lead-acid batteries can be used strongly, after the use of bad can go to the electric car store to trade in the new, make up the difference in price can be replaced with a new set of batteries, the loss is minimized, is a big benefit for the user. The lead in the battery can also be reused, reducing environmental pollution.

Disadvantages of lead-acid batteries: large weight, limited battery capacity, short life, lead-acid batteries are generally within 400 times of deep charge and deep discharge, and the life span is about three years.

Advantages of lithium-ion batteries:

1: Light weight and small size. The volume of lithium-ion batteries is 2 3 of the volume of lead-acid batteries, and the weight is about 1 3 of the weight of lead-acid batteries.

Lithium-ion batteries of the same volume have a higher capacity than lead-acid batteries, and the reduced weight makes electric vehicles lighter and has an increase in range by about 10%.

2: Long life. The average life of lithium-ion batteries is about 4 years, which is about one year higher than that of lead-acid batteries, with more than 500 times of charge and discharge, no memory of battery use, and strong shock resistance.

3: Overcharge resistance, good charge and discharge resistance. Lithium-ion battery At normal temperature, lithium-ion battery can be charged continuously for 48 hours without accidents such as battery expansion, leakage and rupture, and the capacity is kept above 95%. And under the dedicated charger, it can be charged and discharged quickly.

Disadvantages of lithium-ion batteries:

The production cost of lithium-ion batteries is high, and the labor cost of production equipment accounts for about 40% of the production cost, which is about three times that of lead-acid batteries. Its three times the cost performance is not high, it gives people a flashy feeling, and the lithium-ion battery can not be used, it can only be thrown away, or find a place to bury it, after thousands of years, future generations will dig it out and be an antique.

The safety performance of lithium batteries is worse than that of lead-acid batteries, especially in the case of high temperatures, which are prone to dangers, such as spontaneous combustion.

As a veteran lead-acid battery production group, Changxin Battery has excellent reputation and quality, and has been praised by the market for many years. As a high-end product in lead-acid batteries, Changxin graphene series adopts a more scientific direct connection structure, an upgraded formula with higher energy density, and a higher technology content, bringing longer life, longer endurance and more stable performance.

The advantages and disadvantages of lithium batteries and lead-acid batteries mainly include the following three aspects: 1. Lithium batteries can provide higher voltage, greater battery density, and the number of cycles is more than 1,000 times, while lead-acid is only 300-500 times; 2. The charging method of lithium battery is relatively fixed, and the voltage and current limiting method is adopted, while the charging method of lead-acid battery is more; 3. Lead-acid batteries are safer to use and cost.

Which is better, lithium battery or lead-acid battery?

Lithium-ion battery is currently the world's most advanced secondary battery (rechargeable battery), with the advantages of small size, light weight, high energy density, long service life, no memory effect, environmental protection, safety and reliability, etc., and is an ideal power supply for high-end instrumentation.

When the voltage and capacity are the same, lithium-ion batteries are halved in volume and a quarter in weight compared to lead-acid batteries, while their life is three times that of lead-acid batteries, and compared to nickel-metal hydride or nickel-cadmium batteries, lithium-ion batteries are about half the size and weight and twice the lifespan of lead-acid batteries.

Lithium batteries and lead-acid batteries compare advantages and disadvantages from the following aspects:

1.Gravimetric energy density.

At present, the energy density of lithium batteries is generally 200 260wh g, and lead-acid is generally 50 70wh g, so the weight energy density lithium battery is 3 5 times that of lead-acid, which means that in the case of the same capacity, lead-acid battery is 3 5 times that of lithium battery, so in the lightweight of energy storage devices, lithium batteries occupy an absolute advantage.

2.Volumetric energy density.

The volume capacity density of lithium batteries is usually about two times that of lead-acid batteries, so in the case of the same capacity, lithium batteries are about 30% smaller than lead-acid batteries.

3.Cycle of use.

At present, the more popular material system is ternary and iron lithium, the cycle times of ternary power lithium batteries are usually more than 1000 times, the cycle times of lithium iron phosphate batteries are more than 2000 times, and the cycle times of lead-acid batteries are usually only about 300 350 times, so the service life of lithium batteries is about 3-6 times that of lead-acid batteries.

4.**。At present, lithium batteries are more expensive than lead-acid, about 3 times, but combined with the service life analysis, the same cost is still the life cycle of lithium batteries.

5.Applicability.

Because the safety of lithium batteries is slightly worse than that of lead-acid batteries, it is necessary to do a variety of safety precautions in use, such as preventing damage to lithium batteries caused by external forces or accidents, because this may cause fire or; At present, the temperature applicability of lithium batteries is also very good, so in terms of other adaptability, lithium batteries are not inferior to lead-acid batteries.

6.The right policy of the state.

Lead-acid batteries because of the production process or waste batteries to the environment caused by the harm is quite serious, so from the national policy guidance, has been restricting the expansion of lead-acid batteries reinvestment, or in some areas to restrict the use of lead-acid batteries, the future trend of lithium batteries to replace lead-acid batteries will become more and more obvious, the progress will gradually accelerate.

1. Durability Battery life: The service life of lead-acid batteries is generally about 2 years, while lithium batteries are more durable, with a life span of 4-5 years; And the lead-acid battery cycle is generally within 300 times, and the lithium battery is fully charged and discharged more than 500 times, the lithium-ion battery is currently the world's most advanced secondary battery (which imitation battery), with small size, light weight, high energy density, long service life, no memory guess trembling effect, environmental protection, safety and reliability, etc., is the ideal power supply for high-end instruments. When the voltage and capacity are the same, lithium-ion batteries are halved in volume and a quarter in weight compared to lead-acid batteries, while their life is three times that of lead-acid batteries, and compared to nickel-metal hydride or nickel-cadmium batteries, lithium-ion batteries are about half the size and weight and twice the lifespan of lead-acid batteries.