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 . <EOS>