Tab connection assembly and secondary battery

Abstract

The invention relates to the production field of secondary batteries and particularly relates to a tab connection assembly and a secondary battery. The tab connection assembly comprises a pin and a clamping part, wherein the pin comprises a connection part and two conductive parts; the two conductive parts are arranged on the two sides of the connection part and are connected with the connection part; fitting regions are arranged on opposite side faces of the two conductive parts; the conductive parts can rotate around connected parts of the conductive parts and the connection part so that the distance between the two conductive parts is changed; when the fitting regions are fitted with the side face of a tab, the conductive parts are prone to be retracted towards the direction of the tab; the clamping part comprises a fixed part and two clamping parts; the two clamping parts are arranged on the two sides of the fixed part and are connected with the fixed part; one end, which is far away from the connection part, of each of the two conductive parts can stretch into the space between the two clamping parts and is tightly clamped by the two clamping parts; and the clamping parts are prone to be retracted towards the direction of the conductive parts. The tab connection assembly is simple and reliable in structure, and has no limitation on the pin thickness.

Description

technical field [0001] The present application relates to the technical field of secondary battery production, in particular to a tab connection assembly and a secondary battery. Background technique [0002] At present, secondary batteries have been widely used in portable electronic devices such as mobile phones, digital cameras, and laptops due to their advantages such as high energy density, high power density, high cycle times, and long storage time. Electric vehicles such as electric bicycles and large and medium-sized electric equipment such as energy storage facilities have broad application prospects. This application of lithium-ion batteries has contributed to solving the energy crisis and environmental pollution. [0003] With the improvement of electric vehicle technology, electric vehicles and hybrid vehicles are getting closer to people's daily life. At the same time, electric vehicles have put forward higher requirements for the safety performance of lithium-i...

AI Technical Summary

Problems solved by technology

However, the total thickness that can be welded by ultrasonic welding has a certain limit, especially when the welding thickness is greater than 2-3mm, there will be poor welding such as virtual welding, which will affect the electrical performance of the battery core.

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