Quieter Storage, Greater Peace of Mind: HYXiPOWER's Path to "Acoustic–Thermal Balance"

In commercial and industrial (C&I) energy storage, safety is the foundation. At HYXiPOWER, we have established a "golden safety triangle" (see our previous article for details), providing reliable protection throughout the entire system lifecycle.

Yet as safety standards continue to improve, customer expectations are also rising. Beyond safety, users now seek a superior operating experience—and noise is often the first thing they notice.

The noise challenge in today's ESS

Most C&I storage systems today run at 75–80 dB(A)—roughly the sound of standing right next to a washing machine in spin mode. It's loud, intrusive, and fatiguing.

But making an energy storage system "quiet" isn't easy. Traditional noise-control methods usually sacrifice cooling capacity, which then requires higher fan speeds or extra power to compensate — driving up consumption and costs.

This tension between low noise, low energy use, and effective thermal management is often seen as an "impossible triangle." Conventional solutions usually solve one corner while compromising the others.

Our answer: Acoustic–Thermal Balance

At HYXiPOWER, our R&D team took a systems-level approach. We developed an acoustic–thermal balance strategy that delivers quieter, more efficient, and more stable operation — without compromise.

Full-chain acoustic optimization: Quiet by design

True silence must be designed in from the start. Based on acoustic propagation modeling, we built a source-to-path noise control framework.

Noise source control

• PCS module: By optimizing fan selection, speed matching, and AI-driven variable-frequency control, we decreased noise by over 8 dB—nearly halving perceived loudness. 
• Liquid cooling: Using a low-pulsation impeller, smart variable speed, and optimized coil design, unit noise dropped by more than 9 dB while maintaining heat-exchange efficiency.Velocity Contour Map of PCS Air DuctVelocity Contour Map of PCS Air Duct

Noise path control

To block and attenuate transmission, we developed four passive noise-reduction measures:

• Sealed ducting with multi-layer structures (air leakage ≤0.5%, sound insulation ≥35 dB)
• "Sound-break" isolation bridges with composite mounts (vibration transfer ≤10% @50 Hz)
• Three-stage silencers (micro-perforated + insertion + impedance) with ≥25 dB(A) loss
• Thermal balance design using nano-aerogel to cut heat-bridge effects, temp rise ≤3 °C

Together, these deliver >10 dB overall reduction, achieving low-noise, stable operation across a wide frequency band.

Smarter energy management: Quiet and efficient

But silence alone is not enough. To truly achieve acoustic–thermal balance, our engineers moved beyond simple insulation fixes, which often restrict airflow and raise energy use, and instead built a system-level optimization integrating cooling, electronics, and intelligent control.

PCS cooling: Structural redesign + adaptive fan control lowers fan energy use by ~20% while maintaining safe temps, noise control, and longer lifespan.

AI-driven liquid cooling: Our proprietary time-series AI model predicts load and PV heat trends, allowing the system to anticipate temperature shifts in advance. Multi-objective optimization coordinates actuators for efficient cooling, while Model Predictive Control (MPC) resolves the lag of traditional PID in "slow-response" thermal systems, achieving faster, smoother regulation.

By combining AI forecasting + multi-objective optimization + MPC, HYXiPOWER’s C&I storage systems maintain cell-to-cell temperature differences within 2 °C — delivering not only greater operational stability but also significantly improved energy savings.

Low-power electronics: From hardware selection to multi-level sleep states, we cut EMS self-consumption by > 80% and auxiliary load by 35%.

Result: Overall system efficiency exceeds 89% (DC-side >95%), directly reducing OPEX and shortening ROI cycles.

Acoustic–Thermal Balance: Dual benefits, one solution

What once seemed a contradiction—low noise vs. low consumption—is now solved together.

By integrating acoustic full-chain design with AI-enhanced thermal and energy management, HYXiPOWER keeps C&I storage systems at ~60 dB(A) @ 1 m — about the sound of normal conversation—while ensuring high efficiency, safety, and long service life.

This matters most in noise- and efficiency-sensitive sectors: precision manufacturing, biotech, data centers, campuses, schools, and business parks. 

At HYXiPOWER, we believe true innovation is measured by how it improves people's lives. That's why our energy storage solutions go beyond safety, silence, and efficiency — they're built to deliver comfort, confidence, and a simpler, better life.