Future development direction of crystalline silicon BIPV system in the field of photovoltaic building integration
Publish Time: 2025-06-16
High efficiency and lightweightCrystalline silicon BIPV system will continuously improve the conversion efficiency of cells and reduce the unit power generation cost. For example, by improving the preparation process of crystalline silicon materials and the design of cell structure, the efficiency of light absorption and charge transfer can be improved.Develop thinner and lighter crystalline silicon cells and modules to reduce the burden on building structures, improve the flexibility and convenience of installation, and make them more suitable for various building types.Multifunctionality and building materialsCrystalline silicon BIPV modules will not only have power generation functions, but also integrate more building material characteristics, such as heat insulation, sound insulation, fire prevention, and waterproofing. For example, develop crystalline silicon photovoltaic curtain walls with good heat insulation performance to reduce building energy consumption.Better integration with the appearance of the building, providing a variety of colors, shapes and textures to meet different architectural styles and design requirements, and realize the unity of architectural aesthetics and energy production.Intelligence and digitalizationCombining the Internet of Things, big data and artificial intelligence technologies, the intelligent monitoring, optimization and control of crystalline silicon BIPV systems can be realized. For example, sensors can be used to monitor the system's power generation efficiency, temperature, light and other parameters in real time, and algorithms can be used to optimize power generation strategies and improve energy utilization efficiency.Develop an intelligent operation and maintenance platform to achieve remote monitoring and fault diagnosis of the BIPV system, reduce operation and maintenance costs, and improve system reliability and stability.Application scenario expansionIn addition to traditional roof and curtain wall applications, crystalline silicon BIPV systems will expand to more building parts and application scenarios, such as photovoltaic windows, photovoltaic sunshades, photovoltaic railings, etc.It has been more widely used in industrial buildings, commercial buildings, public buildings, residential buildings and other fields, promoting the green transformation of the construction industry.Methods for breaking through technical bottlenecks of crystalline silicon BIPV systemsSize and building modulus matching problemProblem: The size of photovoltaic products is quite different from the building modulus, which makes it difficult to organically combine with buildings. Photovoltaic products pursue power generation efficiency and production efficiency. Components have strict requirements for battery layout, accurate to millimeters; and after years of development, building technology has formed a standardized building modulus system, with the basic modulus being M, i.e. 100 mm, and the commonly used moduli being 3M, 6M, 12M, etc., i.e. 300 mm, 600 mm, 1200 mm.Breakthrough method: Strengthen the cooperation between photovoltaic companies and construction companies, and jointly develop crystalline silicon BIPV products suitable for building moduli. For example, develop standardized modular components so that they can be easily combined and installed to meet different building sizes and design requirements. At the same time, use advanced manufacturing processes and technologies to achieve flexible customization of crystalline silicon cells and components and reduce customization costs.Imperfect standard systemProblem: Due to the cross-border and cross-industry characteristics of BIPV, a standard system has not yet been formed. The standard system based on buildings is not sound, and there is a lack of engineering design, installation, and acceptance standards related to building performance, especially the lack of special engineering standards for installation locations. Both photovoltaics and buildings have a complete technical standard system, but the photovoltaic industry mainly adopts electrical standards, which are very different from building standards.Breakthrough method: The government and industry associations should speed up the formulation and improvement of relevant standards and specifications for crystalline silicon BIPV systems, covering all aspects such as engineering design, installation and construction, acceptance inspection, operation and maintenance. For example, formulate unified technical requirements and evaluation specifications for building photovoltaic power generation systems, take safety as the evaluation basis, improve durability and reliability requirements, and ensure the quality of installation and operation and maintenance, taking into account the harmony between buildings and the environment.High costProblem: The initial investment cost of crystalline silicon BIPV systems is high, including component costs, installation costs, and system integration costs. Compared with ground-mounted photovoltaic power generation systems, BIPV products have harsh production conditions and high product prices. Excessive product prices cause BIPV projects to rely on government financial subsidies, otherwise they cannot achieve grid parity.Breakthrough method: On the one hand, reduce the production cost of crystalline silicon cells and components through technological innovation and scale effects. For example, improve the utilization rate of crystalline silicon materials, optimize production processes, and reduce raw material consumption and energy consumption. On the other hand, strengthen cooperation between upstream and downstream enterprises in the industrial chain, realize resource sharing and complementary advantages, and reduce system integration costs. In addition, the government can increase subsidies for crystalline silicon BIPV systems to encourage more enterprises and projects to adopt this technology.System stability and reliabilityProblem: Crystalline silicon BIPV systems may be affected by various environmental factors during long-term operation, such as temperature changes, humidity, ultraviolet radiation, wind load, etc., resulting in system performance degradation and increased failure rate.Breakthrough method: Strengthen research on the reliability and durability of crystalline silicon BIPV systems, and develop materials and components with good anti-aging, anti-corrosion and wind pressure resistance. For example, use high-performance packaging materials and sealing technology to improve the waterproof, moisture-proof and dust-proof capabilities of components. At the same time, establish a complete system monitoring and maintenance system to promptly discover and solve problems in system operation and ensure the stable operation of the system.
