#Energy Storage #Hoymiles #HoyUltra 2

Hoymiles HoyUltra 2: A New Standard in Quiet Energy Storage

As demand for energy storage systems (ESS) rises, particularly in commercial and residential settings, noise levels have emerged as a crucial factor for approval and implementation. Hoymiles Electronics Inc. has set a new benchmark in this domain with their latest innovation, the HoyUltra 2, a liquid-cooling CI battery system that has successfully achieved a remarkable certification for operating at noise levels of ≤60 dB(A). This certification was awarded after rigorous testing conducted by the Zhejiang Electric Safety and Quality Inspection Center, aligning with the international standard ISO 37442010.

Significance of Noise Control in Energy Storage

Traditionally, energy storage systems have operated within a noise range of 65 to 75 dB, which can be disruptive in noise-sensitive areas such as residential neighborhoods and commercial districts. The quieter operation of HoyUltra 2 allows seamless integration into these environments, making it highly suitable for various applications without contributing to noise pollution.

The Quiet Achievement

What truly sets the HoyUltra 2 apart is its testing environment, conducted in a state-of-the-art semi-anechoic chamber with a background noise level of only 24 dB, which is quieter than many bedrooms at night. The evaluation measured sound levels throughout the system's operational cycle, including full-powered charging and discharging, confirming that even under maximum load, the noise remains low and stable.

At an overall A-weighted sound pressure level of 47.4 dB(A), the HoyUltra 2 operates akin to a whisper in a library. This breakthrough in noise reduction opens new deployment avenues where space is limited, and neighbors may be close by.

Innovative Engineering Behind the Silence

The quiet operation of the HoyUltra 2 stems from Hoymiles' commitment to System-Level Quiet Engineering. This approach ensures that acoustical considerations are integrated from the product's initial design phase, leading to substantial innovations:

• - Enhanced Noise Suppression: By optimizing the refrigeration system and the architecture of air ducts, Hoymiles has improved heat exchange efficiency and reduced internal turbulence, minimizing noise generation.
• - Balanced Efficiency and Quietness: The control systems for fans and compressors work in harmony to prevent unnecessary high-speed operations, which typically contribute to excess noise.
• - Fully Liquid-Cooling Architecture: This design reduces the number of fans needed and operates at lower RPMs, directly controlling noise levels at the source.
• - Acoustic Stability: The alignment of the physical design with its acoustic properties ensures that noise control was a foundational design principle from the onset.

Expanding Possibilities for Energy Storage

With the HoyUltra 2, Hoymiles not only addresses the prevalent issue of noise pollution associated with energy storage but also enhances the potential for these systems to be deployed in a variety of settings. This innovation is particularly beneficial for:

• - Commercial Business Districts
• - Industrial Parks
• - Residential Communities

By effectively breaking down the