What is the future trend of "big heat" for electric car lithium-ion batteries?

When it comes to new-energy cars, batteries are the lifeblood.

Batteries play an important role as a power source for electric vehicles. In essence, it is a device that can convert stored chemical energy into electrical energy. In the current market, lithium batteries are widely used, and most vehicles such as BYD, Beiqi New Energy, and Chery New Energy have adopted this technology form.

In addition to the current state of development, lithium battery technology has been developing steadily in the past decade, but whether it will be subverted in the future is also unknown!

Prices will become market oriented, can lithium batteries still be "hot"?

The development of domestic new energy vehicles has exceeded ten years. In the past few years, under the impetus of the National new energy industry policy, a frenzy of manufacturing lithium batteries has been set off throughout the country. Lithium battery core and pack assembly companies once received more than 400(including lithium batteries for new energy vehicles). Among them, Lithium battery companies involved in electric vehicles once had 200-300 companies. However, core materials such as the diaphragm of the cathode material, electrolytes, and aluminum plastic membranes used in the soft packaging core are heavily dependent on imports, resulting in high prices for lithium batteries manufactured, and lithium batteries of the same capacity are more than three times as expensive as lead-acid batteries., resulting in difficult market promotion.

In recent years, the domestic lithium battery material technology has continued to break through, and most of the core materials have basically achieved the localization rate. At present, lithium batteries, including chargers, are 48v11Ah(using 1,8650 cylindrical steel shells, each core is 2200mA, and 65 cores are connected in parallel). The price is less than 500 yuan, which is more cost-effective than lead-acid batteries. advantage. That's about a third of what lithium batteries have just hit the market. It can thus be seen that the gradual replacement of lead-acid batteries by lithium batteries is not empty talk.

How long can lithium batteries survive the advance of solar technology?

For future development, lithium battery technology still has challenges. Although heat is reducing costs and increasing heat storage energy, it will eventually lose the impact of solar energy technology in the long run. At present, many countries have begun to formulate medium-and long-term solar energy development plans, such as the National Photovoltaics Program of the United States, the Sunshine Program of Japan, and the Dene-Free Rural Power Program of China's western provinces and autonomous regions. Solar energy application technology will gradually deepen from monocrystalline silicon and advanced devices, thin film photovoltaic technology, PV MaT, photovoltaic components and system performance and engineering, photovoltaic applications and market development.

For the current solar cell technology, it is divided into three types: monocrystalline Silicon solar cells, polysilicon thin-film solar cells, and amorphous silicon thin-film solar cells. Currently, monocrystalline Silicon solar technology is the most mature, but due to the high cost of monocrystalline Silicon, It will be gradually replaced by polysilicon thin-film solar cells. However, the most promising is amorphous silicon thin-film solar cells; Second, nanocrystalline solar cells are gradually entering people's horizons. It can harvest stable performance with very low production costs and simple processes. Its production cost is only 1/5 to 1/10. The lifetime of Silicon solar cells can reach more than 20 years, which is one of the most challenging factors for lithium batteries.

Summary: Battery is the core component of electric vehicle, which directly determines the most critical range of the electric vehicle. At present, the research on batteries for electric vehicles is still concentrated in lithium batteries, followed by lead-acid batteries, nickel-metal hydride batteries and sodium batteries. Japan and the United States have the world's top two patent applications for batteries for electric vehicles and their management systems. With the new energy gradually heating up, the input to the battery industry is getting bigger and bigger. In the next few years, battery technology will usher in rapid development.

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