High-power COB (Chip-on-Board) with a capacity of kilowatts has been successfully developed, solving the problems of heat dissipation and light decay in industrial lighting.

Industrial lighting, as a fundamental component of intelligent manufacturing, places extremely high demands on the power, stability, and lifespan of light sources. Port terminals, large factories, and stadiums require kilowatt-level high-power light sources to achieve wide-area, high-intensity illumination. However, traditional high-power lighting solutions have long been plagued by problems such as poor heat dissipation and severe light decay, affecting not only lighting effects and safety but also significantly increasing maintenance costs. Recently, a breakthrough has been achieved in the development of kilowatt-level high-power COB (Chip-on-Board) light sources. Through end-to-end technological innovation, this breakthrough completely solves the core pain points of industrial lighting, providing a new, efficient, stable, and long-lasting solution for high-end industrial lighting.

Traditional high-power lighting often uses multiple SMD LED chips spliced ​​together or ordinary COB packaging, which presents insurmountable technical bottlenecks. With power output increased to the kilowatt level, the dense arrangement of chips leads to a rapid accumulation of heat. Excessive thermal resistance causes junction temperatures to easily exceed 110°C, resulting in a light decay rate exceeding 15% after 1000 hours and a lifespan of only about 20,000 hours. Simultaneously, high temperatures easily cause yellowing of the encapsulating adhesive and aging of the phosphor, leading to problems such as color temperature drift and rapid brightness decay, failing to meet the 24/7 uninterrupted operation requirements of industrial scenarios. Furthermore, traditional packaging structures lack sufficient protection, allowing dust and moisture in industrial workshops to easily corrode the chips, further exacerbating the failure rate and increasing subsequent maintenance costs.

The development of kilowatt-level high-power COBs has achieved breakthroughs across the entire chain, focusing on the two core challenges of heat dissipation and light decay, encompassing chip, packaging, and heat dissipation structures. In chip selection, high thermal conductivity gallium arsenide chips and flip-chip technology are used to eliminate gold wire interference, improve light utilization, and reduce chip thermal resistance by more than 30%, laying the foundation for high-power output. It can stably achieve 1000-1500W power output with a luminous efficacy exceeding 100lm/W.

In terms of packaging technology, a transparent fluorescent ceramic is innovatively used to replace traditional phosphors and encapsulating adhesives. This not only provides high-temperature resistance and anti-yellowing properties but also significantly improves thermal conductivity, preventing packaging failure caused by high temperatures. It also eliminates the color temperature drift problem caused by phosphor decay, keeping the light decay rate below 5% after 1000 hours and extending the lifespan to over 50,000 hours. Simultaneously, the packaging structure is optimized with a low thermal resistance design, paired with a high thermal conductivity aluminum nitride ceramic substrate, reducing the system thermal resistance to below 4.8K/W. This ensures that the junction temperature is stably controlled below 85℃ during kilowatt-level power operation, suppressing light decay at its source.

In terms of heat dissipation design, a three-dimensional thermal conductive module and vapor chamber technology are integrated to construct a three-level heat dissipation system: chip-substrate-heat sink. Combined with a finned heat sink and heat pipe forced cooling, heat dissipation is accelerated, improving heat dissipation efficiency by over 60% compared to traditional solutions. This completely solves the heat accumulation problem during high-power operation, preventing brightness decay and chip damage caused by high temperatures. Furthermore, the packaging protection level has been upgraded to IP65 or higher, effectively resisting dust and moisture corrosion in industrial workshops and ensuring long-term stable operation.

In terms of drive design, a high-precision constant current drive circuit and derating drive technology are adopted to avoid damage to the chip caused by current fluctuations. Simultaneously, PWM dimming function is integrated, allowing brightness adjustment according to the needs of industrial scenarios. This not only meets different lighting requirements but also further reduces light decay, achieving a light intensity stability of over 95% and a response time shortened to within 10μs, making it suitable for high-speed switching industrial lighting scenarios.

This kilowatt-level high-power COB light source has been successfully applied in multiple industrial scenarios: in ports and docks, a single light source can cover an area of ​​over 500㎡, replacing the traditional multi-lamp splicing solution, improving lighting uniformity by 40%; in large factories, 24-hour uninterrupted operation shows no significant light decay, reducing maintenance costs by 70%; in stadiums and aviation hubs, its high luminous efficiency and high stability meet the needs of high-definition lighting, while energy consumption is reduced by more than 50% compared to traditional metal halide lamps, aligning with the trend of green energy conservation.

The successful development of kilowatt-level high-power COB not only solves the heat dissipation and light decay problems of kilowatt-level industrial lighting, filling the technological gap in high-end industrial high-power lighting, but also promotes the transformation of industrial lighting towards "high power, high efficiency, long life, and low maintenance". In the future, with continuous optimization of materials and processes, power density and stability will be further improved, expanding to more demanding industrial scenarios such as marine engineering and explosion-proof lighting, injecting lasting momentum into the green upgrade of intelligent manufacturing.