A battery module, comprising: a plurality of battery units, comprising a battery top cover; a temperature measurement unit, comprising a temperature collection element configured to collect temperature of the battery top cover; a harness plate, arranged on the battery top cover and comprising a harness plate body and a limiting structure arranged on the harness plate body, wherein the limiting structure is configured to cooperate with the temperature measurement unit to limit the position of the temperature measurement unit; a circuit board, arranged on the harness plate and comprising a circuit board body and an extending strip arranged on the circuit board body, wherein the temperature collection element is connected with the extending strip to transmit collected temperature signals to the circuit board body through the extending strip; and an electrical connecting sheet, connecting adjacent battery units and arranged on the harness plate; characterized in that: the temperature measurement unit is arranged between the electrical connecting sheet and the battery top cover, and the electrical connecting sheet is configured to exert pressure onto the temperature measurement unit, such that the temperature measurement unit is kept in fit with the battery top cover; and wherein the limiting structure is arranged between the electrical connecting sheet and the battery top cover, and the electrical connecting sheet is configured to exert pressure onto the temperature measurement unit through the limiting structure. a plurality of battery units, comprising a battery top cover; a temperature measurement unit, comprising a temperature collection element configured to collect temperature of the battery top cover; a harness plate, arranged on the battery top cover and comprising a harness plate body and a limiting structure arranged on the harness plate body, wherein the limiting structure is configured to cooperate with the temperature measurement unit to limit the position of the temperature measurement unit; a circuit board, arranged on the harness plate and comprising a circuit board body and an extending strip arranged on the circuit board body, wherein the temperature collection element is connected with the extending strip to transmit collected temperature signals to the circuit board body through the extending strip; and an electrical connecting sheet, connecting adjacent battery units and arranged on the harness plate; characterized in that: the temperature measurement unit is arranged between the electrical connecting sheet and the battery top cover, and the electrical connecting sheet is configured to exert pressure onto the temperature measurement unit, such that the temperature measurement unit is kept in fit with the battery top cover; and wherein the limiting structure is arranged between the electrical connecting sheet and the battery top cover, and the electrical connecting sheet is configured to exert pressure onto the temperature measurement unit through the limiting structure. the temperature measurement unit is arranged between the electrical connecting sheet and the battery top cover, and the electrical connecting sheet is configured to exert pressure onto the temperature measurement unit, such that the temperature measurement unit is kept in fit with the battery top cover; and wherein the limiting structure is arranged between the electrical connecting sheet and the battery top cover, and the electrical connecting sheet is configured to exert pressure onto the temperature measurement unit through the limiting structure.