Lithium battery performance test system and non-uniform pressurizing device thereof

The invention relates to a lithium battery performance test system and a non-uniform pressurizing device thereof. The non-uniform pressurizing device comprises a mounting part and a non-uniform pressurizing part. The mounting component comprises a first mounting plate and a second mounting plate which are oppositely arranged and connected with each other. The non-uniform pressurizing part is arranged between the first mounting plate and the second mounting plate and comprises at least two pressurizing mechanisms, one ends of the pressurizing mechanisms are connected with the first mounting plate, the other ends of the pressurizing mechanisms are provided with pressurizing plates, the pressurizing plates and the second mounting plate are arranged at intervals, and lithium batteries are placed between the pressurizing plates and the second mounting plate; and each pressurizing mechanism is used for applying different pressures to the lithium battery. Different pressure is applied to different areas of the lithi