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Rockwill delivers integrated electrical solutions for smart grids, urban infrastructure, renewable integration, and industrial applications. From medium-voltage automation to EV charging networks and prefabricated substations, our systems ensure stable, efficient, and future-ready power distribution. Customized. Connected. Reliable.

Power Capacitor Solution: Parallel Supercapacitor High-Power-Density Energy Storage System

Rockwill 08/09/2025

This solution leverages parallel supercapacitor technology to deliver highly reliable, long-lifespan energy storage support for applications requiring instantaneous high-power output and rapid energy transfer.

Ⅰ. Technical Principles & Core Value

Parallel Capacity Expansion: By connecting multiple supercapacitor cells in parallel, the system’s total capacity (Farad value) and peak current output capability are multiplied.
High-Power Discharge: Low internal resistance enables instantaneous current release ranging from hundreds to thousands of amperes, meeting ultra-high power density requirements.
Rapid Charge-Discharge Cycles: Millisecond-level response speed with >95% charge-discharge efficiency, suitable for frequent pulse operations.

Ⅱ. Typical Application Scenarios

Application Field	Core Requirement	Solution Value
Electric Vehicles	Instantaneous acceleration energy	Enhances acceleration, protects battery
Industrial Equipment	Motor smooth-start/voltage support	Reduces grid impact, prevents downtime
Renewable Energy	Solar/wind power fluctuation mitigation	Improves grid stability & absorption rate
Smart Grid	Millisecond-level reactive compensation	Maintains voltage stability, improves power quality
UPS Systems	Instantaneous backup power switching	Achieves zero-interruption seamless transition

Ⅲ. Key Technical Implementation

Voltage Balancing Management (Core Component)

Deploys active voltage balancing circuits to monitor cell voltages in real time
Controls inter-cell voltage deviation within ±50mV via energy transfer/dissipation
Eliminates overvoltage risks from parametric variations, extending system lifespan by >30%

Intelligent Thermal Management

Networked temperature sensors with air/liquid cooling systems
Auto power reduction strategy (>65°C trigger) prevents thermal runaway

Safety Redundancy Design

N+1 capacitor module redundancy architecture
Triple protection: overvoltage/over-temperature/overcurrent
Flame-retardant enclosure (UL94 V-0 standard)

Ⅳ. Solution Advantages

Power Density: 10-100× higher than lithium batteries
Cycle Life: >1 million cycles (at 25°C)
Temperature Range: Operates at -40°C~+65°C
Maintenance: Maintenance-free design, 20-year service life

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