Safety device for increasing safety when using battery system

The invention relates to a safety device (SV) for increasing the safety when using a battery system (BS), in particular a lithium-ion battery system, the battery system (BS) comprising a number of battery devices (BV) connected in series Wherein the safety device has a contact element which can assume a first position and a second position, wherein the at least one battery device is configured for electrically bridging at least one battery device (BV) is electrically connected in series when the contact element (KE) is in the first position (P1), and the at least one battery device (BV) is electrically bridged when the contact element (KE) , Wherein the safety device (SV) has a resetting device (RV) for adjusting the contact element (KE) as a function of e In the state state of the at least one battery device (BV) from the second (P2) to the first position (P1). 本发明基于用于在使用电池系统（BS）、尤其锂离子电池系统时提高安全性的安全装置（SV），其中，所述电池系统（BS）包含多个电串联的电池装置（BV），其中，所述安全装置（BV）合适用于至少个电池装置（BV）的电的跨接，其中，所述安全装置（SV）具有接触元件（KE），该接触元件能够占据第位置（P1）和