What is the difference between lead-acid battery and lithium battery?

Lithium ion battery lead-acid battery

1. Rechargeable battery (alkaline battery -- lead-acid battery)

2. Cycle life (1200 ~ 2000 times -- 500 ~ 900 times)

3. Specific energy (150W·h/kg -- 40W·h/kg)

4. Charging time (2 ~ 4h -- quick charging 3 ~ 6h (quick charging technology is not mature yet)

5. Charging and discharging energy efficiency (conversion efficiency of charging and discharging energy of lithium ion battery can be greater than 97% -- conversion efficiency of charging and discharging energy of lead-acid battery is about 80%)

6. Price (higher 24V/10Ah price: 750 ~ 1200 yuan -- lower 24V/12Ah price: 200 ~ 300 yuan)

7. Volume (the volume of small lithium ion battery is 2/3 of that of lead-acid battery -- large)

8. Weight (only 1/3 ~ 1/4 of the weight of lead-acid battery)

9. Driving range (power -- environmental protection)

10. There is no pollution in production and use (there is pollution in production -- there is a large amount of lead in lead-acid batteries, which will pollute the environment if not handled properly after being discarded).

11. Lithium ion battery (charge in constant current and constant voltage mode -- lithium battery is vulnerable to overcharge, deep discharge and short circuit)

12. Charging and maintenance (complex, high maintenance cost -- simple, open circuit provided with low maintenance cost)

13. Power supply (small open circuit power supply provided, more series connection -- large open circuit power supply provided)

"Lithium battery" is a kind of battery with lithium metal or lithium alloy as negative electrode material and non-aqueous electrolyte solution. In 1912, lithium metal battery was first proposed and studied by gilbertn.lewis. In the 1970s, M.S.W. hittingham proposed and began to study lithium-ion batteries. Due to the very lively chemical properties of lithium metal, the processing, preservation and use of lithium metal have very high requirements for the environment. So lithium batteries have not been used for a long time. With the development of science and technology, lithium battery has become the mainstream.

Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium ion batteries. Lithium-ion batteries do not contain metallic lithium and are rechargeable. The fifth generation of rechargeable lithium metal battery was born in 1996. Its safety, specific capacity, self-discharge rate and performance/price ratio are all better than lithium ion battery. Because of its own high technology requirements, only a few companies in a few countries now produce the lithium metal battery.

I. introduction to lithium battery

Lithium battery is a kind of battery which is made of lithium metal or lithium alloy as negative electrode material and USES non-aqueous electrolyte solution. In 1912, lithium metal battery was first proposed and studied by gilbertn.lewis. In the 1970s, M.S.W. hitTIngham proposed and began to study lithium-ion batteries. Due to the very lively chemical properties of lithium metal, the processing, preservation and use of lithium metal have very high requirements for the environment. So lithium batteries have not been used for a long time.

What's the difference between lithium battery and lead-acid battery? Which good?

Working principle of lithium ion battery:

Lithium ion batteries generally use lithium alloy metal oxide as the positive electrode material, graphite as the negative electrode material, using non-water electrolyte batteries.

The reaction on the positive electrode of charge is as follows: LiCoO2==Li (1-x) CoO2+XLi++Xe- (electron)

The reaction on the negative charge electrode is: 6C+XLi++Xe-=LixC6

Total rechargeable battery reaction: LiCoO2+6C=Li (1-x) CoO2+LixC6

The anode

Anode material: many cathode materials are available. lithium iron phosphate is widely used in mainstream products. Comparison of different anode materials:

Positive reaction: lithium ion embedding during discharge and lithium ion detaching during charge. Charge: LiFePO4 li1-xfepo4 +xLi++xe- discharge: li1-xfepo4 +xLi++xe- LiFePO4.

The cathode

Anode material: mostly graphite. New research finds that titanates may be a better material.

Negative electrode reaction: lithium ion detaching during discharge and lithium ion embedding during charge.

Charging time: xLi++xe-+6C LixC6

Discharge time: LixC6 xLi++xe-+6C

What's the difference between lithium battery and lead-acid battery? Which good?

Introduction to lead-acid batteries

Lead acid battery (VRLA), is a kind of battery whose electrode is mainly made of lead and its oxides and whose electrolyte is sulfuric acid solution. When lead-acid battery is discharging, the main component of the positive electrode is lead dioxide, and the main component of the negative electrode is lead. Under charging condition, the main components of positive and negative electrodes are lead sulfate.

A single-cell lead-acid battery has a nominal voltage of 2.0v and can discharge to 1.5v and charge to 2.4v. In application, 6 single-cell lead-acid batteries are often connected in series to form the nominal lead-acid battery of 12V. 24V, 36V, 48V, etc.

Main characteristics of lead-acid batteries

Security seal

During normal operation, the electrolyte will not leak out of the battery terminals or enclosure. No free acid

Special absorbent baffles keep the acid inside, and there is no free acid inside the battery, so the battery can be placed in any position.

Frustrated system

When the internal pressure of the battery exceeds the normal level, the VRLA battery will release excess gas and automatically reseal to ensure that there is no excess gas in the battery.

Simple maintenance

Since the gas compounding system converts the resulting gas into water, there is no need to add water in the process of using the VRLA battery.

Long service life

The VRLA battery is made of lead-calcium alloy with anti-corrosion structure and can be charged for 10-15 years.

Stable quality and high reliability

With advanced production technology and strict quality control system, VRLA battery has stable quality and reliable performance. 100% inspection of voltage, capacity and seal on line.

Safety certification

All VRLA batteries are UL certified.

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