Reliable technology: multiple assurances in terms of innovation, management and customer values
The LONGi Lifecycle Quality concept was created from a blank canvas. Adhering to an innovative concept based on reliability, LONGi aims to rapidly transform its technological innovations into large-scale production capacity, further reducing LCOE. With this objective in mind, the company’s R&D team has redoubled its efforts which have enabled LONGi to consecutively break world records in the industry, with a view to making the quality concept of the cycle of production. company life the benchmark for the photovoltaic industry.
LONGi’s product R&D center has carried out extensive research in cooperation with scientific institutions such as the University of New South Wales, Sun Yat-sen University and the China Electric Institute (CEI). In terms of raw material testing, the company has the industry’s first exclusive testing center, the specific laboratory having been approved by the Chinese National Accreditation Service for Conformity Assessment (CNAS), and its reliability testing center is in strategic cooperation with several certification bodies such as TÜV Rheinland, TÜV SÜD, TÜV NORD, CGC and CSA.
- Multidimensional analysis of module design
In the discipline of module design, LONGi integrates theoretical models with experimental results and takes into account power output, efficiency, power generation and reliability in various scenarios. Specifically, the company develops products under the six “pillars” of high optical usage, reasonable electrical design, high encapsulation density, low degradation, high-quality chain guarantee. stable supply and transport compatibility. Optical, electrical and mechanical models related to module design are established at an early stage, with a simulation calculation performed simultaneously to select the optimal solution.
Through testing of raw materials, external applications and different installation methods, LONGi defines an optimal silicon wafer and module size for its Hi-MO 5 product (182mm silicon wafer based) .
- Thresher tests performed to eliminate potential hazards
By adopting differentiated test methods in different application scenarios and extreme weather conditions when designing modules, it is possible to effectively monitor products and materials to ensure their suitability and reliability in harsh environments. In addition to IEC 2 and 3 times thresher tests for finished products, HATC, DH and UV aging tests, all above industry standards, will be performed so that the quality of the module meets the installation requirements and of use when faced with extreme conditions.
LONGi is also at the forefront of wind tunnel tests to validate the design of its modules, which are subjected to a maximum wind speed of 60m/ s, equivalent to a magnitude 17 hurricane. In hail testing, LONGi goes so far as to enlarge the size of the hailstones to over 35mm to ensure that a module is able to withstand catastrophic weather.
Reliable material introduction: rigorous testing performed to select the best
In terms of management standards, LONGi applies the strictest criteria to nomenclature, reliability monitoring and the material introduction process. For raw materials such as glass, tape, EVA, backsheets, frames and junction boxes, etc., only suppliers meeting LONGi BOM standards can be considered. Only those who pass this rigorous testing process can be brought into mass production. Thus, LONGi referred to industrial criteria of 824 items, bringing the reliability of LONGi’s standard nomenclature to a new level.
Based on the superior product design and the introduction of materials, LONGi was awarded the status of “High Achiever” by RETC for the third consecutive year for its product threshing tests (i.e. three times the IEC standard) and received top marks in all nine categories. He was also ranked as “Top Performer” by PVEL for the fifth consecutive year, achieving this ranking in the six categories available.
The extreme nature of product and material testing is aimed at achieving the highest reliability standards. Selection of reliable materials is the cornerstone of module quality for PV panel manufacturers and in the future, LONGi is committed to making no compromises on materials or quality standards in order to increase power. or reduce costs.
Reliable manufacturing: complete quality control guaranteeing lean production
Quality control systems including ISO9001, ISO45001, ISO14000 and IEC TS 62941 globally control LONGi’s manufacturing quality. The company has also implemented a comprehensive quality control system covering the control of raw materials, the manufacturing process and the monitoring of the reliability of the final product. Specifically, LONGi has introduced several advanced digital management platforms that are present throughout the quality control process, making the implementation and traceability of management standards more efficient and transparent. With LONGi module factories based around the world, the process allowed for consistent control of materials, quality and testing standards to ensure that all modules are manufactured to the same standards and quality regardless of the location.
In LONGi’s automated and intelligent workshops, by delicacy management, there are 22 manufacturing procedures, 153 items under quality control to ensure the standardization of the production process, ensuring that every module produced by the company is the same excellent quality.
LONGi conducts comprehensive annual, quarterly and monthly product performance monitoring. For example, a high frequency monitoring approach is applied for monthly testing, such as PID, LID, and LETID, covering all product models and each set of BOMs. Testing for hail, salt spray, fire protection, etc., LONGi being the first company to integrate these elements in the monitoring of serial production.
To protect the rights and interests of its customers, LONGi adopts digital methods to manage the anti-counterfeiting validation of each module and has also set up after-sales services. To solve the problems of global customers in a timely manner, LONGi has set up more than 10 marketing and service centers in its major global markets to provide 24/7 local service. LONGi not only responds to the needs of its customers in a timely manner during the after-sales phase, but at the very beginning of the business communication, the company also provides effective and professional advice in terms of product selection, planning of the cooperation, commercial support, logistics and transport.
SOURCE LONGi Solar