Sensing substrate and battery module including the same
According to the present invention, a dummy terminal is provided on a sensing substrate and the sensing substrate may be thus commonly used on both side surfaces of a battery module, and as a result, since only one type of sensing substrate provided with the dummy terminal needs to be manufactured instead of manufacturing two types of sensing substrates having different arrangements of the substrate terminals, mass productivity of the sensing substrate and the battery module including the same may be significantly improved.
1. A sensing substrate for sensing a voltage or a temperature of a plurality of battery cells, in a battery module including the plurality of battery cells including a positive electrode terminal and a negative electrode terminal, respectively, and a plurality of bus bars that connect the positive electrode terminals and the negative electrode terminals of the plurality of battery cells to each other, the sensing substrate comprising:
a substrate body; and
a plurality of substrate terminals protruding from the substrate body and coupled to the positive electrode terminals or the negative electrode terminals of the plurality of battery cells through the bus bars,
wherein a temperature sensor is mounted on at least one of the plurality of substrate terminals,
wherein each of the plurality of substrate terminals includes:
a substrate terminal body protruding from the substrate body;
a cell voltage sensing part provided to an upper portion of the substrate terminal body so as to be coupled to the positive electrode terminal or the negative electrode terminal of each battery cell, and sensing a voltage of each battery cell; and
an extending part formed of a material having thermal conductivity, extending to a lower portion of the substrate terminal body from the cell voltage sensing part, and formed on one surface of the substrate terminal body, and
the temperature sensor is mounted on a surface opposite to the surface on which the extending part is formed.
2. The sensing substrate of claim 1 , wherein one or more substrate terminals of the plurality of substrate terminals are coupled to two or more positive electrode terminals of the plurality of battery cells or are coupled to two or more negative electrode terminals of the plurality of battery cells through one of the plurality of bus bars so that the sensing substrate is commonly used on both side surfaces of the battery module.
3. The sensing substrate of claim 1 , wherein the battery module further includes a battery management system (BMS) that manages the plurality of battery cells, and
wherein the sensing substrate further includes a wire harness that connects the substrate body with the BMS.
4. A battery module comprising:
a plurality of battery cells including a positive electrode terminal and a negative electrode terminal, respectively;
a plurality of bus bars that connect the positive electrode terminals and the negative electrode terminals of the plurality of battery cells to each other; and
a sensing substrate for sensing a voltage or a temperature of the plurality of battery cells,
wherein the sensing substrate includes:
a substrate body; and
a plurality of substrate terminals protruding from the substrate body and coupled to the positive electrode terminals or the negative electrode terminals of the plurality of battery cells through the bus bars,
wherein a temperature sensor is mounted on at least one of the plurality of substrate terminals,
wherein each of the plurality of substrate terminals includes:
a substrate terminal body protruding from the substrate body;
a cell voltage sensing part provided to an upper portion of the substrate terminal body so as to be coupled to the positive electrode terminal or the negative electrode terminal of each battery cell, and sensing a voltage of each battery cell; and
an extending part formed of a material having thermal conductivity, extending to a lower portion of the substrate terminal body from the cell voltage sensing part, and formed on one surface of the substrate terminal body, and
the temperature sensor is mounted on a surface opposite to the surface on which the extending part is formed.
5. The battery module of claim 4 , wherein one or more substrate terminals of the plurality of substrate terminals are coupled to two or more positive electrode terminals of the plurality of battery cells or are coupled to two or more negative electrode terminals of the plurality of battery cells through one of the plurality of bus bars so that the sensing substrate is commonly used on both side surfaces of the battery module.
6. The battery module of claim 4 , further comprising:
a battery management system (BMS) that manages the plurality of battery cells,
wherein the sensing substrate further includes a wire harness that connects the substrate body with the BMS.