Abstract: A plug-in connection element for a plug-in connection includes an electrically conductive first contact part which is configured to form an electrically conductive connection with a complementary first contact part of a complementary plug-in connection element of the plug-in connection. The plug-in connection element also includes at least one further electrically conductive part, and at least one protective element which is configured to reduce an electrical resistance between the first contact part and the further part as the temperature increases.

Abstract: A locking device for an energy storage device of a motor vehicle, includes a locking element, which is adjustable based on a control signal, by an adjusting device between a locking position, in which the locking element engages with a latch receptacle, and a release position, in which the locking element is out of engagement with the latch receptacle. The adjusting device has an adjusting element made of a shape memory alloy. The shape change enables the locking element to be adjustable between the locking position and the release position.

Abstract: A locking device for an energy storage device of a motor vehicle, includes a locking element, which is adjustable based on a control signal, by an adjusting device between a locking position, in which the locking element engages with a latch receptacle, and a release position, in which the locking element is out of engagement with the latch receptacle. The adjusting device has an adjusting element made of a shape memory alloy. The shape change enables the locking element to be adjustable between the locking position and the release position.