TEMPERATURE DETECTION DEVICE

To provide a temperature detection device that can detect "an invariant abnormality" of a temperature sensor while preventing the temperature sensor in the normal state from being erroneously determined that "the invariant abnormality" has occurred.SOLUTION: A temperature detection device 1 includes at least a central temperature sensor abnormality determination unit 20C, one end temperature sensor abnormality determination unit 20I, and other end temperature sensor abnormality determination unit 20T that determine that a central temperature sensor 150C has a non-change abnormality when there is no change in the battery temperature Tc of a central battery 120C detected by the central temperature sensor 150C over a first period a1, and the battery temperature Ti of the one end battery 120I detected by the one end temperature sensor 150I, and the battery temperature Tt of the other end battery 120T detected by the other end temperature sensor 150T have risen.SELECTED DRAWING: Figure 1 【課題】正常な状態の温度センサを「不変化異常」が生じていると誤判定するのを防止しつつ、温度センサの「不変化異常」を検知できる温度検知装置を提供すること。【解決手段】温度検知装置１は、第１期間ａ１に亘り、中央温度センサ１５０Ｃで検知する中央電池１２０Ｃの電池温度Ｔｃに変化が無い場合で、かつ、一端温度センサ１５０Ｉで検知する一端電池１２０Ｉの電池温度Ｔｉ及び他端温度センサ１５０Ｔで検知する他端電池１２０Ｔの電池温度Ｔｔが上昇しているときに、中央温度センサ１５０Ｃに不変化異常が生じていると判定する中央温度センサ異常判定部２０Ｃ、一端温度センサ異常判定部２０Ｉ、及び、他端温度センサ異常判定部２０Ｔの少なくともいずれかを備える。【選択図】図１