ELECTRICAL INTERCONNECT BOARD FOR A BATTERY MODULE WITH INTEGRATED TEMPERATURE MEASUREMENT CAPABILITIES

An electrical interconnect board (10) with integrated cell temperature measurement for a battery module (20) having a plurality of battery cells (21) and a battery module (20) comprising such an electrical interconnect board (10) is provided. The electrical interconnect board (10) comprises a printed circuit board (11) and a readout device (19). The printed circuit board (11) comprises an insulating layer (12), a first electrically conductive layer (13), and a second electrically conductive layer (14). The first electrically conductive layer (13) and the second electrically conductive layer (14) are arranged on opposite sides of the insulating layer (12). The printed circuit board (11) comprises a plurality of receptacles (16) each configured for accommodating a corresponding battery cell (21) of the battery module (20). The first electrically conductive layer (10) is configured to electrically interconnect the plurality of battery cells (21) with each other. The first electrically conductive layer (13) and the second electrically conductive layer (14) are made from different electrically conductive materials. The first electrically conductive layer (13) and the second electrically conductive layer (14) are connected with each other through the insulating layer (12) at a plurality of locations by a plurality of vertical interconnect accesses (18), VIAs (18). Each VIA (18) builds a thermoelectric interface and thereby forms an integrated thermal sensor element that generates a voltage depending on the temperature at the thermoelectric interface. The readout device (19) senses the generated voltages of the VIAs (18) and determines corresponding temperature values.