CONSTRAINING APPARATUS AND CONSTRAINING DEVICE

This application relates to a constraining apparatus and a constraining device. The constraining apparatus includes a base (1), a positioning assembly (2), and a cushion assembly (3). The positioning assembly (2) includes a plurality of positioning members (20) arranged in sequence in a first direction (X) and located between two end plate assemblies (13), where the plurality of positioning members (20) are movably connected to a guide assembly (12) in the first direction (X), and adjacent two of the positioning members (20) are fitted to each other in the first direction (X). The cushion assembly (3) is disposed on at least one of two sides of the positioning member (20) that are opposite each other in the first direction (X). The constraining apparatus includes a first state and a second state, where in the first state, adjacent two of the positioning members (20) abut against each other, such that an accommodating space (4) for accommodating a battery cell (10) is formed between the adjacent two of the positioning members (20), and the cushion assembly (3) is configured to abut against the battery cell (10) and the positioning members (20); and in the second state, the plurality of positioning members (20) are spaced apart from each other in the first direction (X). The constraining apparatus in this application improves effect of constraining battery cells (10), thereby decreasing the defect rate of battery cells (10).