Battery module temperature sensor and battery module

The invention discloses a battery module temperature sensor and a battery module, and solves a technical problem that a battery module temperature sensor in the prior art is not ideal in temperature measurement effect. The battery module temperature sensor comprises a temperature probe, a flexible film circuit and a sensor connecting plug, wherein the temperature probe is arranged at a lower end of the flexible film circuit, an upper end of the flexible film circuit is connected with the sensor connecting plug, the sensor connecting plug is further connected with a sampling wire harness of a battery management system to achieve signal transmission, the temperature probe is arranged between battery cells of the battery module to collect temperature signals, and the sensor connecting plug isfixedly installed on a module support of the battery module. The battery module temperature sensor is advantaged in that the temperature probe can be conveniently and quickly arranged in the heat accumulation area in the cen