According to the statistics of the Fire And Rescue Bureau of the Ministry of Emergency Management, from January to July 2021, there were 6462 electric vehicle fire accidents nationwide. Frequent battery safety accidents have sounded an alarm bell for new energy vehicle manufacturers and consumers: we must not only care about the battery's battery capacity, but also pay attention to the safety of the battery. During the "two sessions" in 2022, Dong Mingzhu, chairman of Gree Electric Appliances, "suggestions on improving the safety monitoring standards of power batteries" has aroused widespread concern.
Dong Mingzhu believes that at present, the mainland's safety monitoring standards for power batteries are still in the early stages, the safety monitoring standards related to power batteries are not standardized enough, and the threshold of industry supervision is not clear enough. In the current stage of industry development, how to establish industry norms and regulatory standards and improve the safety of power batteries is an urgent concern for society.
For example, in 2019, the Ministry of Industry and Information Technology issued a notice of three mandatory standards for consultation, gb single battery requirements for over-discharge, overcharge, short circuit, heating, temperature cycling, extrusion a total of five safety tests, compared with the 2015 version of the mandatory national standard "safety requirements and test methods for lithium-ion power batteries for electric vehicles" (GB/T31485-2015), the needle pricking requirements for single batteries were cancelled. Enterprises can choose the acupuncture experiment on their own, and it is not a mandatory experimental project, which means that the flow of new energy vehicles may become a risk of flow.
"It is necessary to further improve the safety monitoring standards of power batteries, such as incorporating more stringent safety testing methods such as acupuncture experiments into national mandatory standards, and modifying relevant standards according to new materials, new processes, and new characteristics." Dong Mingzhu said.
Acupuncture experiment as a method of simulating thermal runaway inducements, requiring the test battery to be fully charged, with a diameter of 5-8mm high-temperature resistant steel needle perpendicular to the battery plate directly above the penetration, the penetration point is located in the geometric center of the through-plane, when the steel needle penetrates the battery, the engineer observes the battery for 1 hour through various indicators, if the measured battery does not catch fire or explode, it meets the requirements of the experiment.
In addition to paying attention to the power battery safety monitoring standards, during the "two sessions" in 2022, Dong Mingzhu also proposed that with a large number of new energy vehicle power batteries entering the scrapping link, the battery environmental pollution can not be ignored. "It is necessary to regulate the lithium battery recycling market and avoid the large-scale inflow of inferior waste lithium batteries into the market." Establish relevant regulations to prohibit the illegal supply and modification of lithium batteries. ”
According to the analysis of China Merchants Securities Research Report, if the service life of lithium batteries is measured according to 4-6 years, the mainland will usher in the peak period of the first batch of power battery retirement in 2021. Where the "decommissioned" battery went and where it should go is worth careful consideration.
Some experts pointed out that a 20-gram quality mobile phone battery can pollute 1 square kilometer of land for about 50 years. The battery volume of new energy vehicles is larger, containing heavy metals such as nickel, cobalt, and manganese, and if it is improperly recycled, it will cause environmental pollution and bring safety hazards, and the harm will be endless.
It is reported that in order to alleviate the crisis of the global "lithium battery garbage dump", Gree Titanium under the leadership of Dong Mingzhu has formed a global comprehensive new energy industry group integrating the research and development, production, sales and cascade utilization of power batteries for new energy vehicles. At the same time, Gree titanium batteries may open up a new situation for the recycling of power batteries.
Gree titanium battery service life of up to 30 years, in Beijing, Beijing bus earliest use of Gree titanium battery to more than 7 years, its power attenuation rate of the maximum less than 5%, battery capacity retention rate is still more than 95%, to solve the traditional lithium battery new energy bus operation for several years after the battery attenuation is serious, can not meet the full day operation, the need to increase the cost of replacement battery and other issues.
Under the background of achieving the goal of carbon neutrality, the mainland new energy automobile industry will surely usher in greater development. Relevant departments should accelerate the research and development, production, sales and recycling of power batteries from the aspects of laws and regulations, policies and technical standards to enter the right track of standardized development. For new energy enterprises represented by Gree Titanium, it is more necessary to shoulder heavy burdens, dare to take the lead, and use technological innovation to help the new energy automobile industry to continuously upgrade and promote green transportation.