Secondary battery

A secondary battery, comprising:

• a top cover, a first electrode terminal, a second electrode terminal, an electrode tab pad plate, an electrode assembly, a first electrode tab and a second electrode tab;
• the first electrode terminal and the second electrode terminal are both arranged at the top cover;
• the electrode tab pad plate is located between the top cover and the electrode assembly;
• the first electrode tab comprises a connecting part, a folding part and a welding part, the connecting part is beneath the electrode tab pad plate, the welding part is above the electrode tab pad plate, the connecting part is connected with the electrode assembly, the welding part is connected with the first electrode terminal, the folding part is connected between the connecting part and the welding part and bypasses the electrode tab pad plate;
• the second electrode terminal is connected with the electrode assembly through the second electrode tab;
• and
• a viscous material is coated on an upper surface of the electrode tab pad plate,
• wherein the secondary battery further comprises a first connection plate and a second connection plate, the first electrode tab is connected with the first electrode terminal through the first connecting plate, and the second electrode tab is connected with the second electrode terminal through the second connecting plate;
• and
• the electrode tab pad plate is bonded with the first connection plate through the viscous material.