Safety device for mounting in a battery cell of a lithium-ion battery, lithium-ion battery cell with safety device

摘要

The invention relates to a safety device (1) for arrangement in a battery cell (8) of a lithium-ion battery, comprising at least one flat metallic conductor (2), in particular a metallic plate or a metallic foil to which an insulation layer is applied and which a pole contact (3) for the electrical connection to a pole (6, 11) of the battery cell (8), the conductor (2) having at least one heating resistor (4) arranged on the insulation layer with a first and a second contact (3, 5) ), wherein an electrical current can be conducted through the heating resistor (4) via the contacts (3, 5). The invention also relates to a lithium-ion battery cell with a corresponding safety device and a battery module with a control device and at least one lithium-ion battery cell.