A safety apparatus for protecting an electric energy store unit comprising: a trigger device including: - a plate-like trigger element for covering at least a part of the outer surface of the electric energy store unit; - at least one contact element for being mounted on the outer surface of the electric energy store unit; - at least one counter contact element mounted between the plate-like trigger element and the at least one contact element, wherein the contact and counter contact elements (32, 34) are electrically interconnected in such way that a deformation and/or fracture and/or shift of the plate like trigger element caused by a force F of an external mechanical impact acting on said plate like trigger element will generate a trigger signal in form of a decreased resistance between the contact elements (32, 34) by establishing an electric contact between the contact element and the counter contact element or one of the contact elements and one of the counter contact elements; and - at least one deformable intermediate element for mounting the plate-like trigger element on the outer surface of the electric energy store unit; a monitoring circuitry connected to the contact elements (32, 34) for monitoring the resistance between the contact elements (32, 34) of said trigger device; and a safety device for taking safety measures concerning an electric energy store unit in response to a trigger signal of the trigger device monitored/detected by the monitoring circuitry, wherein the deformable intermediate element or at least one of the deformable intermediate elements is a spring element or a damping element, or comprises a spring element and/or a damping element. a trigger device including: - a plate-like trigger element for covering at least a part of the outer surface of the electric energy store unit; - at least one contact element for being mounted on the outer surface of the electric energy store unit; - at least one counter contact element mounted between the plate-like trigger element and the at least one contact element, - a plate-like trigger element for covering at least a part of the outer surface of the electric energy store unit; - at least one contact element for being mounted on the outer surface of the electric energy store unit; - at least one counter contact element mounted between the plate-like trigger element and the at least one contact element, wherein the contact and counter contact elements (32, 34) are electrically interconnected in such way that a deformation and/or fracture and/or shift of the plate like trigger element caused by a force F of an external mechanical impact acting on said plate like trigger element will generate a trigger signal in form of a decreased resistance between the contact elements (32, 34) by establishing an electric contact between the contact element and the counter contact element or one of the contact elements and one of the counter contact elements; and - at least one deformable intermediate element for mounting the plate-like trigger element on the outer surface of the electric energy store unit; - at least one deformable intermediate element for mounting the plate-like trigger element on the outer surface of the electric energy store unit; a monitoring circuitry connected to the contact elements (32, 34) for monitoring the resistance between the contact elements (32, 34) of said trigger device; and a safety device for taking safety measures concerning an electric energy store unit in response to a trigger signal of the trigger device monitored/detected by the monitoring circuitry, wherein the deformable intermediate element or at least one of the deformable intermediate elements is a spring element or a damping element, or comprises a spring element and/or a damping element.