General electric vehicle battery with what battery, lead-acid battery good or lithium battery good?

Lead acid batteries

Lead acid battery (VRLA) is an electrode made mainly of lead and its oxides. The electrolyte is a battery of sulfuric acid solution. Under the discharge state of lead-acid battery, the positive electrode is mainly composed of lead dioxide, and the main component of the negative electrode is lead; In the charging state, the main components of the positive and negative poles are lead sulfate.

The nominal voltage of a single-cell lead-acid battery is 2.0 V, which can discharge to 1.5 V and can be charged to 2.4 V; In applications, six single-cell lead-acid batteries are often used in series to form lead-acid batteries with a nominal 12V, as well as 24V, 36V, and 48V.

Lithium cell

"Lithium battery" is a type of battery that uses lithium metal or lithium alloy as a negative electrode material and uses a non-aqueous electrolyte solution. In 1912, the lithium metal battery was first proposed and studied by GilbertN. Lewis. In the 1970s, M.S. Whittingham proposed and began to study lithium-ion batteries. Due to the very lively chemical properties of lithium metals, the processing, preservation, and use of lithium metals require very high environmental requirements. Therefore, lithium batteries have not been used for a long time. With the development of science and technology, lithium batteries have now 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 can be charged. The fifth-generation lithium metal battery of rechargeable batteries was born in 1996, and its safety, specific capacity, self-discharge rate, and performance price are better than those of lithium-ion batteries. Due to its own high-tech requirements, companies in only a few countries are now producing this lithium metal battery.

We know that electric vehicles have been developed in China for more than 20 years, and their advantages such as energy conservation, environmental protection, convenience, and speed have been greatly appreciated by people, and the disadvantages are also obvious. The lack of endurance of electric vehicles has kept them from being able to lift their heads in front of the big brother. Many experts and scholars are also working hard to think about how to change or supplement the kidney to make electric vehicles regain confidence. Lithium-ion batteries are a good solution today, and there is a great chance that electric vehicles will regain their glory.

Which is better, lead or lithium?

So here's the question: which is better, lithium-ion or lead-acid?

With the renewal of the battery technology of electric energy vehicles, the development of lithium batteries has a tendency to rise from safflower bars to the top of the community. But it's just up. Restricted by their own performance, cost-effectiveness and other reasons to replace the position of lead-acid battery brother has a long way to go, and big brother lead-acid batteries are also constantly making self-breakthrough.

Today's weather is good, from the old (accidentally omitted) to show you to see the officials to understand the battery club inside the red stick (lithium battery) and the club boss (lead-acid battery) to look at the house, recently rainy. Don't forget to go home and collect your clothes.

Let's start with lead-acid batteries:

The Ancestral Essentials of Lead Acid Battery

Which is better, lead or lithium?

1: Golden bell iron cloth shirt (hard!) lead acid boss has always been strong in his strong, he breezes Fushan. He ran across his cross, and the moon was based on the principle of the river. The lead-acid battery is well fed, and you can continue to use it if you drop it and repair it.

2: Vegetable price (cheap! ) The reason why the lead boss was able to cross the battery community for many years and sit in the position of the boss is all because of this reason! Cheap, except cheap or cheap.

3: Recast the furnace (recyclable reverse repair) lead-acid batteries with recycling skills. After use, you can go to the electric car store to replace them with old ones, and the difference can be replaced with a new set of batteries to minimize losses. It's a big benefit to the user.

Now that we have gone to school, we must also look at the disadvantages of lead-acid batteries: large volume and weight, limited battery capacity, and short life expectancy. lead-acid batteries are generally within 400 deep discharge, with memory, and life span of about two years.

The Heirloom of lithium battery

Which is better, lead or lithium?

1: Ancestral light work(light weight, small size) Lithium batteries that have been small since childhood are compared with lead-acid batteries of the same capacity on the market. Lithium batteries have a volume of 2/3 of lead-acid batteries and a weight of about 1. 1/3 of the weight of lead-acid batteries. Lithium batteries of the same volume have higher capacity than lead-acid batteries, and weight loss has increased the battery's endurance by about 10 %.

2: Durable health(life improvement) Lithium batteries are deeply maintained. The average life span of lithium batteries is about 4 years, which is about 1.5 times higher than that of lead-acid batteries. Charging and discharging exceeds 500 times. Batteries are used without memory and are resistant to earthquakes. strong.

3: Ancestral Qigong vomiting method (resistance to overcharge, good charge and discharge resistance) Lithium battery from the beginning to open the odd eight pulse, so that under normal temperature, the lithium battery can be continuously charged for 48 hours without battery expansion and leakage When the accident occurred, the capacity remained above 95%. And under the dedicated charger, you can perform fast charge and discharge.

Lithium batteries have many benefits, but their disadvantages are also more obvious.

The cost of making lithium batteries is high. The expensive labor cost of making equipment accounts for about 40 % of the production cost and the price is about three times that of lead-acid batteries. The price of its triple price is not high, it is quite flashy, and lithium batteries cannot be recycled, and they can only be thrown away if they are broken, or buried in a place. After thousands of years, later generations dug it out. It is an antique.

The most important problem is that lithium batteries have potential fire explosion safety hazards, especially when consumers are unwittingly deceived by profiteers to purchase low-quality lithium batteries. The sealing conditions for electric vehicles are not too good. Easy dampness leads to poor contact and other causes of possible safety hazards. However, the technical performance of lithium batteries is also constantly improving. High-security materials are also being used. The safety hazards may only be small and no worries, and it may not be long before the lithium batteries are in the world.

Durability:

Lead acid batteries are generally deeply charged and discharged within 400 times, with memory and life span of about two years. If a maintenance-free lead-acid battery is used, it should be noted that its battery lacks water and it is generally not necessary to add distilled water during use. Lithium batteries have strong durability, slow consumption, charge and discharge more than 500 times, and have no memory. The general life span is 4-5 years.

According to experts, in terms of durability, lithium batteries have good vibration resistance, and batteries in full charging state are safely fixed. They vibrate at an amplitude of 4mm, a frequency of 16.7 Hz for 1 hour, no leakage, no battery expansion and rupture, and open circuit voltage is normal; Good charging resistance, 25 degrees Celsius, fully charged battery 0.1 CA for 48 hours, no leakage, no battery expansion and rupture, normal open circuit voltage, capacity maintenance rate of more than 95 %; The large current resistance is good, and the battery in the fully charged state has a 2CA discharge of 5 minutes or a 10CA discharge of 5 seconds. There is no conductive part to fuse and no appearance deformation.

The difference between lead-acid batteries and lithium batteries in electric vehicles

2 Volume, mass:

The general lead-acid battery pack is 16-30 kg in weight and has a large volume; Lithium batteries are generally 2-6 kg in size, so they are light and easy to ride. In terms of quality, it is difficult to define whether the two are good or bad. Consumers can purchase batteries produced by formal manufacturers according to their own needs.

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