Sungrow Launches Industry’s First Battery Management Technology White Paper at International Energy Storage Summit

Sunpower has launched the industry’s first Battery Management Technology White Paper during the grand opening of the 13th International Energy Storage Summit and Exhibition on April 10. At this crucial moment of market “value transformation,” Sunpower, a leading global provider of energy storage solutions, has redefined battery management from the perspectives of the power grid and system levels. In collaboration with Jianheng and Tsinghua University, they have released the first-ever BM²T Battery Management Technology White Paper, which deeply integrates artificial intelligence, big data, and Internet of Things technologies. This initiative aims to eliminate data silos and better respond to the needs of the power grid.

Currently, energy storage management technology is rather rudimentary, with <b>46%</b> of energy storage safety incidents attributed to battery management issues. As power station scales increase, traditional battery management solutions lack systematic considerations. On the data monitoring front, relying solely on basic parameters like voltage, current, and temperature does not effectively predict thermal runaway. Moreover, increasing the number of sensors can lead to additional short-circuit risks. From an algorithmic perspective, inaccurate data estimates accelerate battery degradation. In terms of fault detection, using single-dimensional threshold evaluations results in frequent alarms and a high false positive rate. Regarding system collaboration, multiple subsystems often create data silos, lacking coordinated control between thermal management, PCS, and battery data.

Intelligent solutions can break down these data silos and maximize the value throughout the battery’s lifecycle. It is essential to recognize that a battery is not equivalent to an energy storage system. To effectively understand, manage, and utilize batteries, the industry requires more precise, intelligent, and compatible system-level technologies. Guided by the energy dispatch needs of the power grid, Sunpower leverages AI large models to achieve breakthroughs across the entire technological chain. This allows for effective sensing of battery signals, precise understanding of their states, and controllable information interlinks, thereby enhancing the safety, efficiency, and longevity of energy storage systems.

<b>Sensing:</b> Effective signals make power station status "transparent." Sunpower conducts an in-depth analysis of the changes in signal parameters during normal aging and thermal runaway phases of batteries. Based on the "breathing effect" of battery cells, they have achieved the first-ever multi-dimensional, high-precision, low-latency sensing of "expansion force," enabling earlier warnings of thermal runaway and more accurate assessments of battery health.

<b>Understanding:</b> Precise states help overcome algorithmic errors. Utilizing an AI-driven model, Sunpower employs intelligent SOS prediction, achieving a thermal runaway warning accuracy rate of ≥99%, thus enhancing system safety. Additionally, the estimates for SOH and SOC have improved by <b>2%-3%</b> compared to industry standards, potentially allowing a <b>1GWh</b> power station to earn an additional <b>7.3GWh</b> annually while extending its lifespan and maximizing utility.

<b>Control:</b> System interlinking shifts from passive responses to more robust grid formation. With improved sensing and understanding, Sunpower has realized the industry's first SOC-linked battery station-level balancing, fully unleashing the potential of each battery cell and increasing overall discharge by <b>5%</b>. Furthermore, by establishing a powerful and stable battery system, they have achieved precise linkage between DC control and AC grid connection, enabling multi-level collaborative management. This allows for preemptive adjustments to system status an hour in advance, with microsecond-level synchronization responding to grid dispatch.

Battery management technology is transitioning from primarily monitoring battery statuses to proactive control management, adapting to the future demands of integrating higher proportions of renewable energy into the grid and the requirements of new power systems. Sunpower is committed to driving value creation through technological innovation. With the release of the <b>BM²T Battery Management Technology White Paper</b>, they continue to advance and lead the industry through the deep integration of power electronics, electrochemistry, and grid support across the "three electricity" domains. Moving forward, Sunpower will collaborate with industry and academic sectors, focusing on foundational technological innovations to jointly advance the global energy system towards cleaner, smarter, and more sustainable solutions.