A CCS assembly and a battery module are provided. The CCS assembly is arranged on a top of a battery group. The CCS assembly includes: a plastic bracket, defining a through groove; a temperature obtaining member, received in the through groove and comprising a temperature sensor and an encapsulation member sleeving an outside of the temperature sensor, wherein the temperature sensor is configured to obtain a temperature of the battery group, the encapsulation member has a connecting surface connected to the plastic bracket; a connection portion, configured to connect the connecting surface to the plastic bracket and abutting against the temperature obtaining member, wherein the plastic bracket and the connection portion cooperatively prevents the temperature obtaining member from detaching from the plastic bracket in an axial direction of the battery group.