Describe the cascade utilization of power batteries

"Until 2012, batteries are basically dead." "Until 2014, batteries were basically useless." "Until 2015, batteries are basically useless."

As for the cascade utilization of power batteries for electric vehicles, professionals always have a headache. Old batteries are not easy to use, and the difference in judgment of the year is only due to the different severity of battery quality. Green enthusiasts also have a headache. Power batteries from 2012, 2014 or 2015 have been retired or are about to be retired.

From the beginning of use, the power battery capacity will continue to decline. With the battery decaying to less than 80% of its original state, the job of powering the car is no longer up to scratch. This time the battery still has life, can be used in some of the relatively low battery requirements of the scene. That's how the cascade works. The industry's enthusiasm for gradation is based on two things: reducing the cost of lithium-ion batteries and protecting the environment by finding a place for old batteries.

But neither will be easy. According to the current technology and process, to realize the cascade utilization of power battery, it needs to complete several steps such as disassembly, detection, screening and recombination, etc., with high cost. Many enterprises have tried this, the cost is very high. If there is no need to buy the used battery or the price is very low, the cascade utilization has certain economy, otherwise the cost of the cascade utilization is not much different from the cost of the new battery. But even with some economy, the quality of the battery is not good. Battery technology continues to improve, and the quality differences between old and new batteries from three to five years ago are increasing. This makes cascade batteries less cost-effective.

Cascade utilization provides a temporary place for old batteries to go. If the cascade utilization is economical, the power battery can be used for several more years, and material recycling and harmless treatment can be done later. If there is no economy and it is better for companies to use new batteries, the problem of disposing of old batteries will be immediately apparent. The personage inside course of study introduces, below current craft level, do not have very good reclaim processing solution. In other words, recycling is not economical.

A somewhat comforting fact is that cascade utilization has found a suitable application scenario in the communication base station. Communication base stations usually need to be equipped with backup power supply to ensure the continuous and stable operation during power failure. Backup power supply usually has a small capacity, and it is easy to regroup old batteries, and the cycle life requirement is not high, so the old battery can achieve. Old batteries cost less than new ones, helping companies cut costs. In the communication base station backup power supply, the problem of cost - performance ratio is solved.

In January 2018, China tower co., ltd. signed cooperation agreements with 16 enterprises, including byd, yinlong new energy, watermart, guoxuan high-tech, and Thornton new energy, on the recycling and utilization of new energy vehicle power batteries. After more than two years of pilot study, the tower company began to use battery cascade large-scale application in communication base station. The tower company, which has 1.8 million base stations nationwide, has the potential to help China consume large amounts of retired power batteries.

But beyond the tower company, other would-be entrants are still plagued by economic problems. Whether the cascade utilization is feasible or not, the final harmless treatment must be faced.

One way to solve this problem is to establish the system of extended producer responsibility. Who produces, who is responsible to the end. In some European countries, the cost of everyday dry batteries is much higher than in China because companies are obliged to dispose of used batteries and pass on the cost of disposal to consumers. In the field of electric vehicles, Chinese government authorities are also building such a system. If recycling remains uneconomical in the future, electric cars could become more expensive.

Both the government and consumers expect the price of electric cars to be lowered. If the price is raised for environmental protection, will people accept it?

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