ELECTROCHEMICAL ENERGY STORE AND METHOD FOR DETERMINING THE TEMPERATURE THEREOF

摘要

The invention relates to an electrochemical energy store (2), containing a cell arrangement (20) having at least one electrochemical cell (200) and temperature detection means (100), which provide at least one piece of information about the temperature of at least one electrochemical cell (200), wherein the temperature detection means (100) contain at least one fibre-optic sensor (120), and one fibre-optic sensor is designed to detect the temperature of a plurality of electrochemical cells (200). The invention further relates to a method for determining the temperature of at least one cell (200) of an electrochemical energy store (2) containing a cell arrangement (20), which contains the following steps: introducing a fibre-optic sensor (120) into the electrochemical energy store (2), inputting an optical read out signal into the fibre-optic sensor (120), generating an optical reply signal in the fibre-optic sensor (120) and reading the optical reply signal out of the fibre-optic sensor (120), wherein the optical reply signal contains information on the temperature of at least two cells (200).