Connecting element for making an electrical connection

Abstract

The invention relates to a connecting element (5) for a device (4) for establishing an electrical connection between a rechargeable battery (3) and a power supply unit, wherein the connecting element (5) has a connecting section (7) for electrically contacting an electrical connecting line to the rechargeable battery (3), and wherein the connecting section (7) is furthermore provided at least partially with a surface structure (12) to form a micro-interlock. The connecting element (5) is designed for a device (4) in the form of a charging socket for receiving a charging plug and for this purpose has a pin-shaped first section (6) which forms a first end region for electrical contact with the charging plug of a charging cable.The surface structure (12) has an arithmetic mean roughness Ra according to DIN EN ISO 4287:2010 of at least 1.2 μm and at most 15 μm to form the micro-interlocking.