WONTAI POWER's Core Cell Stack Fastening Technology Granted National Invention Patent

Recently, WONTAI POWER's self-developed "fastening structure for flow battery cell stack" was granted a national invention patent after a three-year application process. This patent addresses the long-standing risk of electrolyte leakage in flow batteries during practical operation by providing an innovative fastening solution that effectively enhances the operational safety and service life of the cell stack.

In VFB systems, the cell stack may experience seepage or even leakage due to factors such as compressive deformation of the electrode frames, material fatigue, and temperature variations. Such leakage can lead to short circuits between adjacent cells, component burnout, or overheating-induced deformation.

Targeting this persistent industry pain point, WONTAI POWER's newly authorized patent proposes a fastening structure for flow battery cell stacks. Through technological and design innovations, this structure enables adaptive height adjustment during stack operation, dynamically compensating for thickness reduction or displacement caused by compressive deformation of the electrode frames. This ensures that a stable fastening force is consistently maintained inside the stack, significantly reducing the risk of leakage. The structure features a simple, efficient, and highly adaptable design, offering a practical and reliable technical pathway for achieving leak-free operation and performance degradation-free performance in flow batteries over extremely long operating periods.