ELECTROCHEMICAL APPARATUS AND ELECTRICAL DEVICE

An electrochemical apparatus, including a housing and an electrode assembly. The housing includes a first housing portion and a second housing portion with opposite polarities. The electrode assembly includes an electrode plate assembly, a first tab, and a second tab, where the electrode plate assembly includes a first electrode plate and a second electrode plate arranged in a wound manner, the first tab is connected to the first electrode plate and the first housing portion, and the second tab is connected to the second electrode plate and the second housing portion. The electrochemical apparatus further includes a first connector, the first connector including a first arc portion; and/or, the electrochemical apparatus further includes a second connector, the second connector including a second arc portion.