On October 22, 2024, the financial sector reported that according to the information of the China National Intellectual Property Administration, Weijing Energy Storage Technology Co., Ltd. applied for a patent entitled "Internal structure and liquid flow battery for liquid flow battery stack", with the publication number of CN 118763259 A and the application date of May 2024.

The patent abstract shows that this disclosure relates to the field of energy storage technology, particularly to an internal structure for a flow battery stack and a flow battery. The internal structure of the flow battery stack provided in this disclosure includes an electrode assembly unit located at the front end, multiple electrode assembly units located in the middle, an electrode assembly unit located at the rear end, and multiple membrane assembly units; The electrode component unit and the membrane component unit are sequentially stacked along the stacking direction (X direction). The electrode component unit located at the front end and the electrode component unit located at the rear end are respectively provided with first and second end plates at both ends along the stacking direction (X direction). The first and second end plates are used to apply pressure, clamp, and seal the internal structure of the stack through a combination of fasteners. This disclosure can improve the efficiency of assembly, disassembly, maintenance, and replacement of fuel cells, better meet the process needs of fuel cell automation production lines, reduce the probability of internal and external leakage of fuel cells, improve the service life of fuel cells, and extend the maintenance cycle of fuel cells.