In the new energy era, energy storage systems are the core hub for efficient energy utilization. YMIN capacitors, with their superior performance, are key components for improving the stability, efficiency, and reliability of energy storage systems. The following are their core roles in energy storage systems:
1. The Energy Hub of the Power Converter (PCS)
Energy storage converters must achieve bidirectional energy conversion between batteries and the grid. YMIN capacitors play three key roles in this process:
• Large-capacity energy storage: Rapidly absorbs and releases electrical energy to mitigate grid voltage fluctuations, ensuring continuous system operation. They also provide reactive power compensation for inductive loads and improve motor efficiency.
• Ultra-high voltage protection: Withstands high voltages of 1500V to 2700V, absorbs voltage spikes, and protects power devices such as IGBTs and SiC from damage.
• High-current surge protection: The low ESR (down to 6mΩ) design efficiently absorbs high pulse currents on the DC-Link, optimizes power regulation accuracy, and supports soft start to reduce equipment shock.
2. Voltage Stabilizer for Inverters
In inverters for renewable energy sources such as photovoltaic and wind power, YMIN capacitors offer:
• High Capacity Density: Storing more charge per unit volume improves DC-to-AC conversion efficiency.
• Harmonic Filtering: High ripple current tolerance filters out output harmonics, ensuring grid-connected power quality.
• Temperature Stability: A wide operating temperature range (-40°C to +125°C) ensures long-term stable operation in high-temperature environments.
3. Safety Shield for Battery Management Systems (BMS)
In BMSs, YMIN capacitors safeguard battery safety through three mechanisms:
• Voltage Balancing: Connected in parallel with battery packs, they automatically adjust cell voltage differences to extend battery life.
• Transient Response: Their high capacity allows for instantaneous energy release to meet sudden load increases and prevent over-discharge.
• Fault Protection: Serving as a backup power source, they maintain protection circuit operation in the event of a system failure, promptly disconnecting any vulnerable links.
4. Supercapacitors: Synonymous with Safety and Long Life
YMIN supercapacitor modules offer innovative safety alternatives to traditional lithium batteries:
• High Safety: No fire or explosion under puncture, crushing, or short-circuit conditions, certified for automotive safety.
• Long-lasting, Maintenance-Free: Cycle life exceeds 100,000 cycles, extending operating life to decades, with static power consumption as low as 1–2μA.
• Low-Temperature Adaptability: Stable power supply in extreme temperatures of -40°C, resolving cold-temperature shutdown issues for smart meters and on-board equipment.
Conclusion
YMIN capacitors, with their core advantages of high voltage resistance, large capacity, long life, and exceptional safety, are deeply integrated into the converters, inverters, BMSs, and supercapacitor modules of energy storage systems, becoming the cornerstone of efficient energy conversion and safe management. Their technology not only propels energy storage systems toward a “zero-maintenance” era, but also accelerates the global transition to a green, intelligent, and reliable energy structure.
Post time: Aug-14-2025