Flow battery multi-parallel gradient flow field and flow battery

The invention relates to the technical field of battery energy storage, and provides a flow battery multi-parallel gradient flow field and a flow battery. The flow battery multi-parallel gradient flow field comprises a substrate, a first main flow channel and a plurality of first branch flow channels, the first main flow channel is arranged on the base plate, the first branch flow channels are arranged on the base plate at intervals, and the fluid flowing direction of each first branch flow channel is the same as the fluid flowing direction of the first main flow channel. For the first main flow channel and the first branch flow channels, in any three adjacent flow channels, one flow channel is located between the other two flow channels, the flow channel width of the other two flow channels is not equal to the flow channel width of one flow channel, and the fluid flow in each flow channel is the same. According to the parallel gradient flow field of the flow battery provided by the invention, the electrochem