PLUG-IN CONNECTOR WITH A FLIP-CHIP MEASURING ELEMENT

The invention relates to a plug-in connector for disconnecting and connecting at least one electrical contact for charging a rechargeable battery unit of a motor vehicle, having: at least one electrically conductive contact element with a contact region at a first end region of the electrically conductive contact element for releasable electrical connection to a corresponding contact element, and with a connection region at a second end region of the electrically conductive contact element for connection to at least one electrical conductor, wherein the second end region is situated opposite the first end region; and at least one temperature sensor element for detecting a temperature of the electrically conductive contact element and arranged at the second end region of the electrically conductive contact element, wherein the temperature sensor element comprises a substrate with a first connection element and a second connection element which is arranged on said first connection element, a flip-chip measuring element and a first conductor track section which is designed as a heat retarder, wherein a first connection of the flip-chip measuring element is electrically connected to the first connection element by means of the first conductor track section which is designed as a heat retarder. The present invention further relates to a motor vehicle comprising a rechargeable battery unit and a plug-in connector, and also to a charging station for charging a rechargeable battery unit of a motor vehicle, comprising a plug-in connector.