Recently, the National Energy Administration issued the "Guiding Opinions on Promoting Energy Storage Technology and Industrial Development (Draft for Comment)", proposing to establish a compensation mechanism for the development of energy storage industry, and combining energy storage with power system reform to allow energy storage to pass. Market-oriented ways to participate in energy trading. The opinion pointed out that energy storage is an important component and key supporting technology for smart grid, renewable energy high-energy energy system, "Internet +" smart energy, and is the core foundation for building an energy Internet and promoting the development of new energy formats. At the same time, the introduction of this policy has also been seen by the industry as another policy “spring breeze†that blows into the energy storage industry.
Shi Dingzhen, former director of the State Council and chairman of the China Renewable Energy Society, said that China, as the country with the fastest growth rate of renewable energy, the largest installed capacity and the most active capital market, has become an important link in promoting the development of renewable energy. "How to turn this kind of energy that is not stable and change, which is not very suitable for the demand side, into a safe, smooth and stable energy system. It is difficult to do without energy storage."
When will the energy storage “wind vent†come?
Despite previous efforts, China has introduced a number of energy planning policies, including the 13th Five-Year Plan, the Energy Development Strategic Action Plan (2014-2020), and the Energy Technology Revolution Innovation Action Plan (2016-2030). , "Eleventh Five-Year Plan for Power Development" (2016-2020), "13th Five-Year Plan for Renewable Energy Development", etc., but the judgment on the energy storage "window" is far less clear than the new energy automobile industry. .
Although there is a famous saying in the investment community that “the pigs can fly in the skyâ€, the industry’s judgment on the energy storage outlet has been inconsistent. Although the United States, Germany, Australia and other countries have already had relatively successful experience in the field of energy storage, most of their domestic enterprises are still in the state of “crossing the river by feeling the stones†because their energy storage application direction is different from that in China.
For the question of how to judge whether the energy storage “wind vent†really came, the battery China network editor communicated with Wu Shaojie, a researcher at the Modern Electric Power Research Institute of North China Electric Power University. He gave the judgment that some investors with “foresight†In the eyes of entrepreneurs, the “window†of energy storage may have arrived before the “break-even point†of the energy storage industry. He told Battery China. Although some existing energy storage business models are still unable to achieve breakeven according to various calculation methods, it is precisely because some investors or entrepreneurs have already seen the energy storage. The wealth is not just finance, so when the next step of the energy storage “window†comes, it can realize the explosion of business-related business.
Therefore, in the capital market, enterprises in the field of energy storage in advance have been highly respected by major investment institutions. According to the battery China network statistics, only the battery companies in the first quarter of 2017 to store energy in the field of electrochemical energy are Guoxuan Hi-Tech, Waterma, Yiwei Lithium Energy, BYD, Nandu Power, and Lions Technology, among others. The company is carrying out the promotion work of the layout energy storage project. When the “winds†of “Pigs can go to heaven†arrive, these companies will share the first round of “cakes†in the field of energy storage with a forward-looking layout.
Electrochemical energy storage: the battery shows its magic
Compared with traditional energy storage methods, electrochemical energy storage has been favored in recent years. When large enterprises are deploying energy storage, they also regard electrochemical energy storage as their primary choice, and their efforts in research and development of various energy storage batteries are also increasing. However, in the field of electrochemical energy storage, it is better to be "outrageous", or it is more suitable for "a hundred flowers bloom". There is no consistent statement in the industry.
When the battery China network asked about the various types of electrochemical energy storage devices, Shi Dingzhen used "difficult to draw conclusions" to express, "I think from the current point of view, various technologies are still competing to develop, but also need to constantly compare Which technology is more appropriate?"
The development of new energy vehicles has led to the large-scale development of the lithium-ion battery industry. However, in the case that its cost has not fallen to a reasonable range and the safety is still unstable, lithium -ion energy storage is only a beneficial attempt by enterprises. Especially in some basic performance, the demand for energy storage batteries and electric vehicle power batteries is different. “Automobiles pay more attention to safety and cruising range, while energy storage pays more attention to battery life, depth of discharge and discharge rate. These two systems are concerned. The point is completely different," Wu Jiamei, general manager of Sunshine Samsung (Hefei) Energy Storage Power Co., Ltd. also admitted.
Lead-acid batteries have a place in some areas of energy storage due to their mature technology and low price. "At present, the operating life of lead-acid batteries is still relatively low, and if it is not properly done in the future, it may have a great impact on the environment." Shi Dinghuan said, "Now some improved lead-carbon batteries have been greatly improved. Battery life, lower energy storage costs, and relying on the good safety of lead batteries, I think that in the future, in energy storage applications, it will also occupy a place." Domestic companies such as Nandu Power, Shengyang, etc., in the promotion of lead-carbon batteries, also let people see the new vitality of this ancient battery technology in terms of energy storage.
Similarly, Dong Mingzhu is optimistic about the application of lithium titanate batteries in the field of energy storage, the layout of Chaowei Group in sodium salt energy storage batteries, and the research and development of technologies such as flow batteries and vanadium batteries by major enterprises and research institutes. Applications have allowed the industry to see the future of electrochemical energy storage. “Whether it is pumped storage or various chemical power storage, including lithium iron phosphate, lithium titanate, flow battery, lead-acid battery, etc., they are all improving their technical level, and there may be more new in the future. The emergence of energy storage systems, these technologies will play a vital role in China's energy revolution." Shi Dinghua is quite confident about this.
Cost, safety: "Electric energy storage" can not be bypassed
When the battery China network asked about the development of various types of energy storage power, Wu Shaojie’s view seems to be unexpected and reasonable. “From the economic point of view, which battery is better, I’m not sure, but the single As far as the cost of electricity is concerned, as long as the cost is less than 0.5 yuan, the battery should be welcomed." From the answer of this electric power research professional, the importance of cost for energy storage can also be seen.
Shi Dingzhen believes that China's large-scale energy storage market has not really begun, and price is also an important factor. He proposed that the current scenery storage and transportation demonstration project in Zhangbei area of ​​Hebei Province can not only promote the application and development of various energy storage technologies, but also be the “touchstone†for the cost of various energy storage batteries. Wu Jiaqing believes that enterprises should pay more attention to investment income. He stressed that some initial energy storage technologies have lower initial investment costs, but the later repeated investment increases. Such investment returns are actually very low. On the contrary, some technologies have large initial investment. But it is a one-time investment, and such technology has a high investment income.
In addition to cost, safety is also important, which is also · Advanced repeatedly stressed the problem, "for the safety of lithium batteries on electric vehicles has not been absolute guarantee, but once the lithium battery energy storage technology combined household, into the home, its security The problem is even more prominent. "Many foreign household energy storage systems require high security, which is why Shi Dingxi emphasizes that domestic enterprises should learn and learn from them.
In the "Guiding Opinions on Promoting Energy Storage Technology and Industrial Development (Draft for Comment), it is mentioned that energy storage is an important means to enhance traditional security. Yang Yusheng, an academician of the Chinese Academy of Engineering, also wrote an article suggesting that in the large-scale use of energy storage batteries, it is necessary to first refer to the construction of nuclear power plants, conduct safety assessments of energy storage power stations, and “must put safety on all issues that need to be considered. first". “Storage energy can provide some security guarantees for the power grid, so it is especially important for the safety of energy storage technology.†Wu Shaojie also emphasized the “safety†of energy storage.
Battery ladder utilization: Can it be used?
The use of power battery ladders has always been regarded as a "two-way" technology to solve the problem of power battery recycling and development of electrochemical energy storage. But is this approach just a "wishful wish" in the electric car industry?
As the actual operator of the company, Wu’s view is more practical. He stressed that the energy storage battery and the power battery have different technical concerns. The energy storage system and the power system BMS face different system complexity, especially after long-term use, the same batch of batteries will be consistent with the same manufacturer. The decline in sex has led to the use of power battery ladders more like a “pseudo-propositionâ€, and a large number of screening tests for differently consistent batteries will also make companies “obsessed from economical considerationsâ€.
In this regard, Shi Dingzhen appears to be more optimistic. He believes that as long as the corresponding standards are set for the secondary recovery of power batteries, the utilization of power battery ladders can be fully realized. "Which secondary batteries can be used, which can't be used, what precautions should be used in use, how to manage them... These aspects have certain technical standards and specifications, and the use of ladders can be achieved."
Wu Shaojie believes that through the use of power battery ladders, the huge users of electric vehicles can bring other added value to the energy storage industry. These values ​​may be reflected in big data, or in green certificates, etc. Further exploration of the enterprise.
No matter what other problems in the field of electrochemical energy storage are still being explored, innovation is indispensable, both in terms of basic theory and business model. “In terms of technology, economic policy, application systems, management, and business models, the combination of energy storage and energy systems is still in the process of innovation exploration.†Shi Dingzhen believes that energy storage in innovation and development Industry will have much to offer.
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