The current lithium-ion battery production, use, recycling and other aspects of regulation is still in a disorderly state, the design and production stage of the early battery, the relevant agencies have not set up standards and effective supervision. The design of lithium-ion batteries is the prerequisite basis for achieving green and environmentally friendly material decomposition and recycling. The state should clarify the relevant legal system to regulate the responsibility attributed to the post-consumer recycling treatment and reuse stage of raw products; at the same time, the administration should strengthen market regulation, optimize the organization and management, and further improve the regulatory mechanism for the whole life cycle system.
Previously, power lithium battery recycling did not attract widespread attention, importantly due to the poor quality and stability of the early battery, it is difficult to form a large-scale utilization, and this year will usher in a wave of new energy vehicle scrapping, the road to commercialization of power lithium battery recycling is about to open. Especially after 2020, as the number of single type of retired batteries climbs sharply, the scale effect and economic value of the gradient utilization will be greatly reflected.
With the development of technology and economy, energy and environmental issues are becoming increasingly prominent, requiring the uninterruptible power supply industry to "green, environmental protection" development. From China's policy trends, countries have introduced various policies to increase support for low-carbon environmental protection economy, no doubt for the development of lithium-ion batteries low green environmental protection economy has provided a better opportunity.
Lithium battery "whole life cycle management" can solve the many problems of lithium-ion batteries, lithium batteries are currently facing difficulties in addition to the high price of the first input, recycling channels are also worrying, due to the lack of expertise and equipment, not everyone can start recycling lithium batteries. The "whole life cycle management" is directly involved in the construction of the whole chain from production to recycling of lithium batteries.
The whole life cycle management can be divided into three stages: design and production, primary use and secondary use and recycling. Based on state assessment and prediction, the core of the whole life cycle management of battery is online diagnosis and prediction of battery state. On the one hand, for battery systems with long service time, the performance of different life stages must be evaluated and predicted; on the other hand, the safety performance evolution of the battery system under the whole life cycle should also be evaluated.
Three major problems that constrain the development of lithium-ion battery energy storage industry
(1) safety hazards: lithium-ion batteries in overcharge, overdischarge, overheating and mechanical collision and other internal and external factors use, easily caused by the collapse of the battery diaphragm, internal short circuit, resulting in thermal runaway and thus cause safety problems; lithium-ion batteries currently use electrolytes are mostly flammable or combustible organic solvents, adding the potential for fire. Traditional fire safety measures often do not effectively inhibit the thermal runaway of lithium-ion batteries, which can cause the rapid spread of the initial fire, and then evolve into a large-scale fire.
(2) policy standards and technical specifications lagging behind: lithium-ion battery energy storage industry is still in the gestation period, the policy will remain an important driving force for market development. At present, China's relevant strategies and policies in this field are not sufficiently studied, the lack of effective guiding policies and incentives, which is not conducive to the further expansion and strengthening of the lithium-ion battery energy storage industry; the development of technical standards for lithium-ion battery energy storage in China is still in its infancy, and only one national standard and three group standards have been published.
(3) technical standards lagging behind has become an important sticking point affecting the standardized development of the industry, leading to problems such as overly simple design of energy storage projects, vague performance indicators, lack of inspection and testing, and large safety hazards. At present, there is no large-scale nationwide comprehensive inspection agency for the quality of lithium-ion battery products for energy storage, part of the test items and parameters set up in more than a dozen inspection agencies across the country, most of the lithium-ion battery products for energy storage quality, safety inspection, especially high voltage, high current, explosion-proof test in the country is still in the absence of state.
China Recycling Association proposed that under the current technical and management conditions, relying on code traceability is the most suitable way to ensure the whole life cycle management of power lithium batteries. With the continuous improvement and maturity of the recycling system of automotive power lithium batteries, the problems behind the coding system are expected to be solved to a certain extent.
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