Secondary battery, battery module and device

A battery module, comprising a secondary battery, wherein the secondary battery comprises

• a cap plate assembly;
• an electrode assembly, comprising a main body and a tab extending from the main body;
• an electrode terminal, arranged at the cap plate assembly to electrically connect with the tab;
• a first pressing-against member, arranged between the cap plate assembly and the main body, wherein an accommodating space is formed between the first pressing-against member and the electrode terminal;
• a second pressing-against member, arranged between the cap plate assembly and the main body;
• wherein a part of the tab, that passes between the first pressing-against member and the second pressing-against member and extends into the accommodating space, is connected to the electrode terminal, and the first pressing-against member and the second pressing-against member press against two opposite surfaces of the tab respectively.

A device comprising a secondary battery used as a power source, wherein the secondary battery comprises

• a cap plate assembly;
• an electrode assembly, comprising a main body and a tab extending from the main body;
• an electrode terminal, arranged at the cap plate assembly to electrically connect with the tab;
• a first pressing-against member, arranged between the cap plate assembly and the main body, wherein an accommodating space is formed between the first pressing-against member and the electrode terminal;
• a second pressing-against member, arranged between the cap plate assembly and the main body;
• wherein a part of the tab, that passes between the first pressing-against member and the second pressing-against member and extends into the accommodating space, is connected to the electrode terminal, and the first pressing-against member and the second pressing-against member press against two opposite surfaces of the tab respectively.