Battery cell capable of measuring inner temperature thereof

A battery pack comprising a battery cell having an electrode assembly having a cathode, an anode, and a separator interposed between the cathode and the anode, and a controller estimating a temperature of the battery cell,

• wherein an electrode mixture including an electrode active material is applied to one surface or both surfaces of each electrode current collector of the cathode and the anode,
• the cathode and the anode are provided with a first cathode terminal and a first anode terminal respectively serving as external input/output terminals, and at least one of the first cathode terminal and the first anode terminal is electrically connected to a resistance measurement terminal at a position opposite to the external input/output terminal, the resistance measurement terminal being configured to measure a resistance of the electrode current collector,
• wherein the battery cell further comprises a resistance measurement member configured to measure the resistance between either:
• the first cathode terminal and the resistance measurement terminal that both extend from the cathode;
• or the first anode terminal and the resistance measurement terminal that both extend from the anode, and
• wherein the controller further includes a function electrically disconnecting the external input/output terminal of the battery cell when a measured temperature obtained from the resistance measurement member and the controller is equal to or greater than a critical value.