​On December 26th, the ninth roundtable meeting of China PV Solar Energy High-Efficiency Heterojunction 740W+ Club was successfully held at the global headquarters of Ming Yang Group in Zhongshan, Guangdong Province. The meeting was chaired by Guangdong Ming Yang Solar, and 13 experts from the heterojunction industry, including Anhui Light Potential Energy, Anhui Huasheng New Energy, Dongfang Sunrise, Guangdong Ming Yang Solar, Guangdong Quanwei Technology, Guodian Investment New Energy, Guosheng Shian Technology, King Kong Photovoltaic, Liansheng Photovoltaic Technology, Shanghai Hengxi Photovoltaic, CNBM Junkin, Zhejiang Winhitec New Energy, Zhuhai Hongjun New Energy (in Chinese initials), etc., gathered together to discuss the development of heterojunction in China. SOLARZOOM was invited to participate in this roundtable meeting. This year's conference, titled “Heterogeneous Energy Convergence and New Journey”, aims to bring together the latest technological achievements and cutting-edge innovation and practice exploration of PV heterojunction, build a diversified bridge for communication of typical cases and application scenarios in the industry, and share the opportunities, promote the development, and embark on a new journey of energy transformation together.

At the meeting, all the industry experts and leaders discussed the topics of heterojunction technological innovation, production and market trends, analyzed the important role of heterojunction in PV solar energy transformation, driving factors and industry standard development proposals, and tried their best to make positive contributions to the technological innovation and high-quality development of heterojunction products.

Qian Yu, General Manager of Business Management Center and Assistant to Chairman of Bright Sun PV, warmly welcomed the guests on behalf of the company at the roundtable, and said that the essence of new energy is manufacturing, and technological innovation is the foundation and source of power. The development of photovoltaic needs to be centered on the integrated development of innovation chain, industrial chain, capital chain and talent chain, to deeply implement the “integration and integration” of results transformation, to create new application scenarios, and to cohesively build a long-term sustainable innovation ecosystem, so as to practically help the industry to develop in a healthy and orderly manner.

Zheng Lixin, General Manager of General Affairs Management Center of Bright Sun PV, presided over the meeting, pointing out that 740W+ Club has rich scientific and educational quality resources, and believing that under the discussion of each alliance unit, we can jointly promote the high-quality development of China's photovoltaic industry, which led to the discussion of the meeting of several important topics.

Following the pace of the national strategy, under the background of dual-carbon, to enhance the utilization efficiency of renewable energy, to build a new ecological vitality of clean energy has become the responsibility and mission of the enterprise. How can we empower the development of green energy in the new era by utilizing renewable clean energy such as wind power and photovoltaic?

Mr. Peng Qinliang, deputy director engineer of Hydrogen-Amino-Alcohol Integration Design of Ming Yang Group, shared the “PV Off-grid Hydrogen Predicament Breakthrough Direction”, and proposed that under the market trend of “internal volume and external extension”, the PV industry urgently needs to integrate the development of hydrogen energy, and utilize the wind and light resources to build a scenario for the consumption, and jointly form a feasible application scenario and business model innovation to realize the overall green solution. Overall green solutions.

Li Pengkai, director of the office of the chairman of Huasheng New Energy, expressed his appreciation for the pioneering work of Ming Yang Group in the field of off-grid hydrogen production, and said: Huasheng is also paying close attention to the development of off-grid hydrogen production technology, and is actively exploring the use of photovoltaic off-grid hydrogen production to realize the self-manufacturing of electronic-grade hydrogen required for the manufacture of heterojunction itself as well as the efficient recycling of hydrogen. After the commercialization of this solution, it will further promote the heterojunction industry's efficiency, cost reduction and carbon footprint, and Huasheng will share the technical solution with various club members in the future to promote the collective benefit of the industry.

Qiu Wenkai, Executive General Manager of Ming Yang Volt, emphasized that Ming Yang Group, as a leader in the whole new energy industry chain, is also actively laying out the wind-solar hydrogen storage and other fields. In terms of carbon footprint, HJT produces a lower carbon footprint. In order to realize win-win cooperation between enterprises and users, we should focus on the integration of new energy resources, reduce the cost of energy replacement, and promote the synchronous development of “hydrogen production + PV”.

As a cutting-edge innovative industrialized solution in the field of PV modules, 0BB technology solution is gradually promoting HJT products to a broader market. Mr. Zou Huilei, Minister of R&D of Bright Solar Module, brought the introduction of “0BB technology solution now production status report and research”, he introduced that Bright Solar currently adopts IFC direct lamination technology, and has passed the laboratory IEC standard reliability test and TÜV third-party agency testing and certification. No main grid design can significantly reduce the silver paste consumption, and thus reduce the overall manufacturing cost of photovoltaic cells, of which the effect of HJT is more prominent compared with BC cells. Bright Solar's 0BB adopts ultra-fine welding tape, which has smaller surface profitability under changing temperature environment and has more contact points with fine grid lines, making the cells less prone to hidden cracks and effectively realizing the improvement of module yield rate. In the future, Bright Solar will gradually expand the mass production scale of 0BB products according to the market demand, complete the supply according to the market demand in accordance with the quality and quantity, realize the cost reduction and increase efficiency, and empower zero-carbon photovoltaic.

Zhang Wenbin, CTO of Guosheng Technology and Executive Director of New Energy Research Institute, proposed that in the context of industry volume, heterojunction needs to give full play to its technological advantages, make distinctive products that are different from TOPCon and BC, and find core competitiveness in order to win the race track faster. On the other hand, cost is still the core issue of heterojunction technology, and in the future, we need to maximize cost reduction under the premise of ensuring product quality. Therefore, we need to focus on supply chain innovation together with upstream and downstream suppliers to solve the problem of cost reduction in each link.

In the process of battery size iteration, we adhere to the spirit of craftsmanship, excellence, only to ensure that the product standards stand the test of time, in order to protect the industry's continued progress and healthy development of technology. Continuing the previous roundtable discussion, Yang Bocchuan, Director of Global Photovoltaic Research Institute of Orient Sunrise, brought the introduction of “G12 Pro Cell Size Advancement Continuation Discussion”, and proposed that heterogeneous junction cells need to bring into play the strengths of the CVD, PVD plate production equipment, and under the unchanged condition of the module, let the wafer size do the optimal design, and thus enhance the power of the module. Orient Sunrise led 210 G12 Pro products, in the case of wafer cost does not increase, stacked with wafer tolerance optimization, can achieve module power increase. In the future, the silicon wafer industry will also be attacked in the aspect of refinement.

Tang Doudou, Vice President of Liansheng PV Technology, pointed out that the HJT (heterojunction) industry is at a critical turning point, and it should adapt to the changes quickly, race against time, and strive to realize the significant improvement of the overall power products as well as the establishment of a unified standard in the first half of next year. By enhancing product power, improve energy conversion efficiency, to meet the market demand for efficient and reliable photovoltaic products. At the same time, the establishment of a unified standard threshold will help promote the industry standardization, standardization of development, reduce disorderly competition, and promote the optimal allocation of resources.

With its excellent performance potential and market recognition, HJT is gradually becoming a rising star in photovoltaic solar energy. From material innovation to process optimization, from cost reduction to market promotion, HJT is seeking a technological breakthrough that is superior to Topcon and BC. In this regard, the experts at the meeting discussed the SWOT analysis of the three mainstream high-efficiency solar technologies.

Dr. Zhang Zhongwei, Chief Scientist and Director of New Energy Research Institute of Guosheng Technology, threw out two important topics: one is market promotion, there should be an urgent sense of crisis, and how heterojunction can occupy a higher market share in the fierce market competition among the current troika (Topcon, HJT, BC); the other is technology enhancement and product application, under the premise of ensuring reliability, how to improve the efficiency of heterojunction and reduce the cost to significantly pull the power advantage. significantly pull the power advantage. He pointed out that leading heterojunction enterprises should play a leading role in scale and expand in specific directions such as efficacy enhancement (HJT's own efficacy enhancement and accelerated research and development of Hybrid BC), cell size, and differentiated application areas (especially high-temperature regions and application environments with high double-side-rate power generation), in order to realize better product performance and application share.

Tang Xuan, Executive Vice President of Liansheng PV Technology, pointed out that the three mainstream PV technology products in the market, despite their unique features, are generally facing the problem of not fully tapping the potential of power generation, which to a certain extent restricts the overall efficiency of the PV industry. In contrast, HJT (heterojunction) technology shows relatively obvious advantages in terms of power generation. It not only brings new development opportunities for the industry, but also prompts us to continuously explore and innovate, with a view to guaranteeing power generation efficiency while further overcoming the shortcomings of the existing technology, and promoting the development of the PV industry in the direction of greater efficiency and sustainability.

Li Yang, Vice General Manager of Guodian Investment, said that the consumer market is more focused on the differentiation of power generation and product quality, how to convey the advantage of “HJT has the lowest carbon footprint among mainstream technology routes” to the consumer side, and how to enhance the value-added and the comparison with other batteries will be the highlights of HJT, which need to be internally formed into a unified consensus. All these need to form a unified internal consensus. At the same time, for heterojunction cost reduction and efficiency technology, including 0BB and 210.6 large-size wafer technology, we should give full play to the advantages of the group, at least within our club to form a similar guide to the group standard, so that we can polish the product, and work together to promote the progress of heterojunction technology, to form a synergy, and compete with TOPCON and BC technology.

Comprehensive alliance units to discuss the content, bright sunshine ambient general management center general manager Zheng Lixin emphasized that we have to reach a consensus on the standard through the 740 club platform of the resources owned by each enterprise. Ming Yang has close cooperation with the alliance units, including business dealings with Liansheng PV Technology, Dongfang Sunrise and King Kong PV. Unifying technical standards will help promote the standardized development of the industry. In the future, we hope that the alliance can work together to promote and formulate technical standards, and even publish white papers, so as to jointly empower the development of PV.

How to create a more competitive HJT marketing strategy and economic model through collaborative innovation? Continuing from the previous topic, Mr. Hou Hongtao, Vice President of Hongjun New Energy Technology, proposed a discussion on the co-development and maintenance of HJT marketing PPTs and economic modeling solutions. Mr. Hou believed that a unified presentation of comparative power plant data and the development of a standard program model would produce more convincing information and documents to persuade the market and consumers.

Zhang Bojing, Sales Director of Shanghai Electric's Marketing Center, emphasized that the collection of power plant data can take into account the data of third-party agencies, the company itself and its customers in order to ensure the objectivity of the data.

Combined with the program arguments and opinions of the alliance leaders, Zheng Lixin, General Manager of the General Affairs Management Center of Bright Sun Volt, proposed to form the first joint decision-making collaboration since the alliance roundtable, and to jointly develop the HJT marketing PPT, whose PPT outline is provided by Hongjun New Energy, and the specific form of which will be led by the Light Storage Billion to allocate to the enterprises to jointly complete the assistance, and to be iterated and improved in the subsequent meetings.

On the other hand, regarding the power generation, investment calculation return rate, the meeting under the auspices of Zheng Lixin, General Manager of General Affairs Management Center of Bright Sunshine Volt, unanimously adopted to unite the existing power generation project data of each enterprise, and led by Optical Storage Billion to form the public number album of “Power Station Project Data”, and each enterprise will provide the relevant data to improve the HJT market project case. HJT market project cases. The content of each album can eventually become the project data reproduced and released by each enterprise unit in the public number to further create HJT project standards and guarantee the rigor.

In recent years, national policies have actively guided PV enterprises to reduce PV manufacturing projects that simply expand production capacity, strengthen technological innovation, improve product quality and reduce production costs. Based on this background, HJT should focus on enhancing technology research and development and product quality assurance. Chervon Technology proposes a topic: how to ensure HJT's “price self-discipline” under the industry's new regulation? Suggested that we should discuss and participate in the discussion, QuanWei Technology suggests defining the guide price of HJT in the name of the club, so as to form the self-regulation of price.

In the bright sunshine volts of the proposal, the alliance unit unanimously adopted in the subsequent monthly meeting of the alliance unit can reach a consensus, share the project situation and related data analysis, etc., the alliance gradually formed the industry “price self-regulation” of the enterprise consensus!

To promote the quality and speed up the innovation of PV industry with new quality productivity! The successful holding of this roundtable has further strengthened the faith of all enterprise members to move forward hand in hand. We firmly believe that HJT technology will create growth momentum for the global green transformation and sustainable development industry, continue to tell China's green story, create China's green practice, comprehensively empower the construction of green and clean energy system, and practically help the realization of the “dual carbon” goal by overcoming the difficulties and continuous innovation again and again.