A unit plate position fixation method, comprising steps of: obtaining peripheral position information of unit plates located between two layers of separators; and controlling a hot-pressing device according to the peripheral position information to perform hot pressing on the two layers of separators, so that the two layers of separators are adhered at peripheral positions of the unit plates; wherein the step of obtaining peripheral position information of unit plates located between two layers of separators comprises steps of: obtaining position information of the unit plates during their movement with the two layers of separators; controlling a detection device according to the position information to detect the unit plates, and receiving a detection signal sent from the detection device; and processing the detection signal to obtain the peripheral position information; wherein the detection device is a CCD camera, and the step of controlling a detection device according to the position information to detect the unit plates and receiving a detection signal from the detection device comprises: comparing the position information with predetermined reference information (S1012a); controlling, if a first comparison result is obtained, the CCD camera to photograph a compound lamination consisting of the unit plates and the two layers of separators (S1012b); and receiving an image signal sent from the CCD camera (S1012c). obtaining peripheral position information of unit plates located between two layers of separators; and controlling a hot-pressing device according to the peripheral position information to perform hot pressing on the two layers of separators, so that the two layers of separators are adhered at peripheral positions of the unit plates; wherein the step of obtaining peripheral position information of unit plates located between two layers of separators comprises steps of: obtaining position information of the unit plates during their movement with the two layers of separators; controlling a detection device according to the position information to detect the unit plates, and receiving a detection signal sent from the detection device; and processing the detection signal to obtain the peripheral position information; obtaining position information of the unit plates during their movement with the two layers of separators; controlling a detection device according to the position information to detect the unit plates, and receiving a detection signal sent from the detection device; and processing the detection signal to obtain the peripheral position information; wherein the detection device is a CCD camera, and the step of controlling a detection device according to the position information to detect the unit plates and receiving a detection signal from the detection device comprises: comparing the position information with predetermined reference information (S1012a); controlling, if a first comparison result is obtained, the CCD camera to photograph a compound lamination consisting of the unit plates and the two layers of separators (S1012b); and receiving an image signal sent from the CCD camera (S1012c). comparing the position information with predetermined reference information (S1012a); controlling, if a first comparison result is obtained, the CCD camera to photograph a compound lamination consisting of the unit plates and the two layers of separators (S1012b); and receiving an image signal sent from the CCD camera (S1012c).