Industry major listed companies: Ningde Times (002074); Pai Energy Technology (688063); Guoxuan Gaoke (002074); BYD (002594); YWL (300014); Nebula shares (300648); Junsheng Electronics (600699); Collette Technology ( 832432); Guodian Nanrui (600406); Huazhi-Technology (300490); Goldwind Technology (002202); Sunny Power (300274); Shenghong shares (300693); Kewa Hengsheng (002335); Crestec (002518), Goodway (688390); Sunny Power (300274); Kolu Electronics ( 002121); Nandu Power (300068); Desai Battery (000049); Ganfeng Lithium (002460), etc.
This article's core data: energy storage plate listed companies' R & D expenses; the number of energy storage-related papers published
The full text of the statistical caliber of the note:
storage" as the keyword, select "China", "papers" filter. 2) The statistics are as of August 29, 2022. 3) If there is any special statistical caliber, it will be noted at the bottom of the chart.
Energy Storage Industry Technology Overview
1. Definition and Classification of Energy Storage
(1) Definition of Energy Storage
Broadly speaking, energy storage, or energy storage, refers to the use of a form of energy in the same form by means of a medium or equipment. Equipment, a form of energy with the same or converted to another form of energy stored, based on future applications need to be released in a specific form of energy cycle process.
In a narrow sense, energy storage refers to the storage of electrical energy, i.e., the use of chemical or physical methods to store the energy generated and release a series of technologies and measures when needed.
(2)Classification of energy storage
Based on the different storage media of different energy storage technologies, energy storage is mainly divided into mechanical energy storage, electrochemical energy storage, thermal energy storage, chemical energy storage, electromagnetic energy storage and so on. Using these energy storage technologies, electrical energy is stored in the form of mechanical, chemical and thermal energy and fed back into the power network at the right time.
2, technology panorama: the five major segments of the technology route
Energy storage is divided into mechanical energy storage, electromagnetic energy storage, electrochemical energy storage, thermal energy storage and chemical energy storage five categories of technology route.
Energy storage industry technology development process: began in the 1960s
China's energy storage industry technology development process began in the 1960s, China began to pumped storage power plant research, and the establishment of the first hybrid pumped storage power station - Gangnam Hydroelectric Power Station; to the 1990s, the construction of pumped storage power stations Ushered in the climax; to the early 21st century, the country began to other energy storage technology research, including compressed air energy storage, electrochemical energy storage, etc., and after 2010 to accelerate the compressed air, all-vanadium liquid current batteries and other energy storage technology to accelerate the diversified development of energy storage technology.
Energy storage industry technology policy background: policy support technology level
In recent years, China has put forward a series of energy storage industry technology development related policies, accelerated the development of the energy storage industry chain, and at the same time, the key technologies of the energy storage standard specification, so that the level of energy storage technology steadily improved.
Status quo of energy storage industry technology development
1. Status quo of scientific research investment in energy storage industry technology
(1) National key research and development program projects
According to the publicly available national key research and development program projects, there are 27 national key R&D program projects related to China's energy storage industry technology from 2018-2021***, of which 22 will be in 2021.
Note: There are no published national key R&D program projects related to energy storage industry technology in 2019.
(2) R&D expenses of A-share listed companies
The energy storage industry has been developing for many years, and energy storage projects are widely used, and the overall level of R&D investment in the industry is high. From the perspective of the A-share market, from 2017-2021, the total R&D expenses of listed companies in China's energy storage sector increased year by year, and in the first quarter of 2022, the total R&D expenses of listed companies in the energy storage sector amounted to about 22.845 billion yuan.
2, energy storage industry technology research and innovation achievements
(1) the number of papers published
From the number of papers published related to energy storage, from 2010 to the present, China's energy storage-related papers published in the year-on-year trend, visible energy storage scientific research fever The energy storage research fever can be seen. As of August 2022, China has published 90294 papers related to energy storage.
Note: As of August 2022, there are 90,294 papers related to energy storage published in China.
(2) Technical Innovation Hot Spots
The Innovation Word Cloud allows us to understand the hottest technical subject terms in the field of energy storage technology and analyze the latest key R&D topics in this technology field. The most common keywords in the last 5,000 patents in this technology field are extracted through Wisdom Sprout, in which the keywords of energy storage systems and energy storage batteries are involved in a larger number of patents, indicating that the recent R&D and innovation in the field of energy storage has focused on energy storage systems and energy storage batteries.
(3) Patent Focus Area
From the field of energy storage industry technology patent focus, the current energy storage industry technology patent focus area is more obvious, and its main focus is on the energy storage system, energy storage battery and so on.
Major energy storage industry technology comparative analysis
From the point of view of energy storage technology maturity, the current mechanical energy storage market technology maturity, electrochemical energy storage technology (energy storage battery) lithium-ion batteries, lead-acid batteries have entered the maturity stage; liquid current batteries are still in the R & D demonstration stage; sodium sulfur batteries are in the deployment stage.
The main energy storage technology advantages and disadvantages of higher maturity and application areas are as follows:
Pain points and breakthroughs in the development of energy storage technology
1. strong>
The cost issue is one of the challenges facing the current energy storage technology. Lithium-ion batteries, for example, although with the rapid improvement of lithium-ion battery technology and battery scale production capacity, the cost of lithium-ion batteries has declined; but compared with other energy storage methods, lithium-ion battery cost is still at a high level. Comparison of pumped storage and lithium iron phosphate battery life cycle cost of electricity, lithium-ion battery cost is much higher than pumped storage, about 1.7 times the cost of electricity for pumped storage.
(2) safety
Safety is the focus of the development of energy storage needs to be addressed. In recent years, many domestic and foreign energy storage power plant safety accidents, most of which are lithium battery storage. According to incomplete statistics, in 2021, the world's nine energy storage safety accidents, including "4-16" Beijing Dahongmen energy storage power plant fire and explosion accident is due to lithium batteries caused by internal short circuit.
(3) Geographic constraints
Geographic constraints are also a major challenge to the development of energy storage technology, such as pumped storage and compressed air energy storage. The construction of pumped storage power plant, for example, first of all, we must give full consideration to the local geological conditions and natural conditions, such as mostly conglomerate, sandstone and other underground rocks, and for the absence of earthquakes, typhoons, floods, droughts and other hidden disasters. Secondly, the construction of pumped storage power station on the height difference between the upper and lower reservoirs and horizontal distance is also required.
2, energy storage technology development breakthrough
(1) liquid current battery is expected to solve the safety problem
Liquid current battery has a high degree of security, long service life, large-scale advantages, is expected to solve the lithium-ion batteries, the safety of the hidden problems.
(2)Modular energy storage technology to break through the geographical limitations
Currently, many researchers as well as companies are researching how to make energy storage technology to break through the geographical limitations, modular deployment is possible to break through the For example, the hot rock energy storage technology, iron air battery technology, liquid air energy storage technology, etc., have realized the modular deployment, such as the modular deployment. Modular deployment can bring many benefits for long-time energy storage.
Direction of development of energy storage technology and trends: diversification of technology routes
The "14th Five-Year Plan" for the development of new energy storage implementation program "pointed out that we need to promote diversified technological development, to carry out pilot demonstrations of the classification of different technology routes. Among them, the lithium-ion battery requirements to high safety, low cost, long life direction, and also proposed to focus on the development of liquid current batteries, metal air batteries, thermal energy storage and other long-time energy storage technology.
"Foresight Carbon Neutral Strategic Research Institute" focuses on carbon neutral policies, technologies and products, aims at the international scientific and technological frontiers, serves the major strategic needs of the country, and carries out organized and planned scientific research and studies on carbon neutrality, promotes the transformation and popularization and application of carbon neutral technologies, and helps the enterprises to achieve the goals of carbon neutrality. We aim at the international scientific and technological frontiers to serve the major strategic needs of the country, carry out organized and planned scientific research on "carbon neutrality", promote the transformation and application of carbon neutral technologies, find technological breakthroughs for enterprise innovation, and provide management and technical consulting on strategic paths to carbon peak and carbon neutrality for governments at all levels. Dr. Wenqiang Xu, the president of the company, graduated from the University of California, Berkeley, and has been y engaged in basic research, product development and industrialization in the fields of low-carbon clean energy and green materials for more than two decades, with 55 patents, 33 papers, and has brought more than 30 products to the market, creating a commercial value of 5+ billion yuan, focusing on hydrogen energy, solar energy, energy storage and other clean energy research.
The above data refer to the Lithium Battery Industry Technology Trend Foresight and Investment Value Strategy Consulting Report by Prospect Industry Research Institute.