SECONDARY BATTERY

The present invention provides a secondary battery. The secondary battery of the present invention includes: 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 on the top cover, the electrode tab pad plate is of a strip plate shaped structure, the electrode tab pad plate is located between the top cover and the electrode assembly, the first electrode tab includes a connecting part, a folding part and a welding part, the connecting part is located at the upside of the electrode tab pad plate, the welding part is located at the downside of 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 with the connecting part and the welding part bypassing the electrode tab pad plate; the second electrode terminal is connected with the electrode assembly through the second electrode tab. The present invention achieves physical isolation between the welding imprint and the connecting part of the electrode tab when welding with the electrode tab, which improves the battery performance, and extend the service life of the battery.