Battery Energy Storage Systems
Industry Challenge
As AI workloads and high-density data centers drive unprecedented growth in power demand, utilities are rapidly deploying Battery Energy Storage Systems (BESS) to stabilize the grid and ensure continuous power availability.
As BESS installations scale, they face extreme operating conditions: differential thermal expansion between dissimilar joint materials, rapid charge/discharge cycling, and vibration-driven embedment relaxation. As bolt load drops, joint resistance rises, creating hot spots that can lead to catastrophic failure, and in mission-critical BESS infrastructure, even one compromised connection threatens the whole system.
Solution
Solon Belleville spring washers actively compensate for thermal cycling, material creep, and vibration to maintain consistent preload throughout the life of the installation. Unlike flat washers, they apply a continuous, flexible load that deflects to preserve clamping force as components expand and contract, with no re-torquing required.
This stabilized preload minimizes resistance buildup, reduces heat, and cuts maintenance burden across switchgear, busbars, terminal blocks, and inverter connections, while aligning with IEEE, IEC, and NEMA standards for high-reliability power infrastructure.
Where Belleville Washers Are Applied in BESS
- Busbar Connections: Counteract differential thermal expansion that reduces bolt load with every charge cycle
- Battery Terminal Blocks: Reduce preload loss from embedment relaxation to less than 1%
- Switchgears & Disconnects: Maintain preload to prevent the hot spots that trigger arc flash
- Grounding & Bonding Points: Preserve ground path continuity through repeated thermal cycles
| Reliability is no longer determined solely by system capacity; it is determined by the integrity of the connections within it. |
Download the case study, Battery Energy Storage Systems, to learn how Solon's Belleville Washers keep BESS connections reliable under the most demanding operating conditions.
Learn more about the use of our products in electrical connections:
Case Study: Belleville Washers Supercharge Grid Reliability
Case Study: Solon Belleville Springs Maintain Bolt Preload on Electrical Connections
Case Study: Solon Flange Washers Solve Gasketed Joint Leaks in Nuclear Power Station Heat Exchangers
Case Study: Solon Belleville Springs Maintain Bolt Preload on PV Racking Systems
Technical White Paper: Bellevilles Strengthen Grounding & Bonding Reliability in Data Centers
Technical White Paper: Maintain Bolt Preload on Electrical Connections Using Belleville Springs
Industry Served: Data Centers
Product Selection Tools:
Bolted Electrical Connections Calculator