Immersion Energy Storage – DEGSON Technical Connector Solutions
Immersion Energy Storage – DEGSON Technical Connector Solutions
As energy storage systems evolve toward high energy density, high power and long service life, immersion liquid cooling / oil cooling technology has become the mainstream heat dissipation solution for commercial & industrial energy storage, containerized energy storage and AIDC supporting energy storage. As core connecting components between battery clusters, combiner cabinets and PCS, immersion energy storage connectors must deliver stable high-current and high-voltage transmission under fully submerged cooling conditions. Meanwhile, they must strictly comply with mandatory requirements of UL4128 (temperature rise of electrical contact parts ≤45K), addressing common pain points of traditional connectors in immersion environments including seal failure, poor liquid resistance and excessive temperature rise.
Focusing on the unique characteristics of immersion energy storage scenarios, DEGSON provides a full-process solution covering product design, model selection matching, installation & maintenance and compliance certification, ensuring long-term safe, efficient and reliable system operation.
01 Core Objectives of the Solution
1. Full Compliance with Standards
Strictly meet core requirements of UL4128 with temperature rise of electrical contact parts ≤45K. The products also obtain international certifications including RoHS and TUV, enabling market access to North America and major global energy storage markets.
2. Superior Environmental Adaptability
Compatible with immersion liquid cooling (fluorinated liquid, mineral oil) and oil cooling energy storage scenarios. Featuring fully sealed construction, resistance to coolant corrosion, no swelling or cracking after long-term immersion to withstand prolonged submersion.
3. Stable Electrical Performance
Support stable transmission of high voltage up to 1500V/2000V DC and high current ranging from 150A to 500A and above, with contact resistance ≤0.1mΩ to reduce heat loss and boost full-link energy transmission efficiency of energy storage systems.
4. Maximum Safety & Reliability
Equipped with anti-misplug, reverse polarity prevention, flame retardant and explosion-proof designs to eliminate safety hazards such as short circuits and fires caused by poor contact or seal leakage, meeting the demand for long-term continuous operation of energy storage systems.
5. Convenient Operation & Maintenance
Structural design balances easy installation and maintainability, lowering maintenance difficulty under immersion conditions, extending service life and cutting replacement & maintenance costs in later stages.
02 Core Applicable Scenarios
Customized exclusively for immersion cooling energy storage systems, this solution covers application scenarios with different power ratings and installation environments:
1. Large-Scale C&I Containerized Energy Storage Power Stations
Adopt container immersion liquid cooling architecture. Connectors serve DC links between battery clusters, between battery clusters and combiner cabinets, and between combiner cabinets and PCS for high-voltage and high-current power transmission.
2. AIDC Supporting Energy Storage Systems
Suitable for immersion energy storage in high-density computing scenarios. Meet stringent data center requirements for high reliability, low loss and fast response of energy storage systems to guarantee stable power supply for computing loads.
3. Mobile Immersion Energy Storage Equipment
Deployed for outdoor emergency power supply and field operations. Vibration-resistant and tolerant of extreme temperature differences to adapt to complex outdoor submerged operating environments.
4. High-Voltage Energy Storage Systems
Compatible with 1500V/2000V DC high-voltage energy storage architectures, resolving challenges of insulation, temperature rise control and high-voltage safety protection under immersion conditions.
Mandatory Technical Requirements for Immersion Environments
• Liquid Resistance
Housings and sealing components are compatible with immersion coolants (fluorinated liquid, mineral oil), with no swelling, cracking or performance degradation after long-term immersion. Protection rating ≥ IP68 (no leakage after continuous submersion at 1.5m underwater for 30 minutes).
• Material Specifications
Current-carrying parts adopt high-purity copper alloy with silver plating; insulating housings are made of UL94 V-0 flame retardant material with outstanding thermal stability, operating steadily from -40℃ to +125℃ to cope with temperature fluctuations in immersion environments.
• Mechanical & Electrical Safety
Physical anti-misplug and reverse polarity prevention structures are integrated; locking mechanism is robust and requires special tools for unlocking. Dielectric withstand voltage and insulation performance satisfy 2000V DC high-voltage standards to avoid high-voltage breakdown risks.
• Sealing Performance
Overall protection rating reaches IP68 or higher.
Optimized Structural Design for Immersion Environments
Targeted structural upgrades address sealing, liquid resistance, corrosion and temperature rise issues under submerged conditions to guarantee long-term stable operation:
1. Dual Full-Sealing Structure
Adopt dual fluororubber seals specially resistant to coolants, combined with dual fastening via thread locking and snaps to achieve IP68 sealing, completely blocking coolant ingress into the cavity and preventing short circuits.
2. Oil & Coolant Resistant Housing Material
PA66+30% glass fiber flame retardant composite material resists swelling and cracking after long-term coolant immersion with excellent thermal stability and UL94 V-0 flame retardant grade, tolerating alternating hot and cold cycles in immersion environments.
3. Immersion-Oriented Heat Dissipation Design
Coolant flow channels are reserved inside the housing, allowing cooling liquid to fully wrap core heat-generating parts including contacts and terminals to maximize the high-efficiency heat dissipation of immersion cooling. Temperature rise under full load is stably controlled within 30–40K with ample safety margin reserved.
