Sensing substrate and battery module including the same

Patent metadata

Field	Value
Publication number	US-11201362-B2
Application number	US-201916394918-A
Country	US
Kind code	B2
Filing date	Apr 25, 2019
Priority date	Apr 26, 2018
Publication date	Dec 14, 2021
Grant date	Dec 14, 2021

Abstract

According to the present invention, a dummy terminal is provided on a sensing substrate and 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.

First claim

What is claimed is:

1. A sensing substrate provided on each of one side surface and the other side surface of a battery module for sensing a voltage or a temperature of a plurality of battery cells, in the 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, each of the sensing substrate provided on one side surface of the battery module and the sensing substrate provided on the other side surface of the battery module 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 two substrate terminals of the plurality of substrate terminals are electrically connected to one of the plurality of bus bars, and any one of the two substrate terminals is a dummy terminal.

2. The sensing substrate of claim 1 , wherein a temperature sensor is mounted on the substrate body.

3. The sensing substrate of claim 1 , wherein a temperature sensor is mounted on at least one of the plurality of substrate terminals.

4. The sensing substrate of claim 3 , 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 sensing substrate of claim 1 , wherein a fuse is mounted on at least one of the plurality of substrate terminals.

6. The sensing substrate of claim 5 , 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 fuse is mounted on a surface opposite to the surface on which the extending part is formed.

7. 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.

8. 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 provided on each of one side surface and the other side surface of a battery module for sensing a voltage or a temperature of the plurality of battery cells,
wherein each of the sensing substrate provided on one side surface of the battery module and the sensing substrate provided on the other side surface of the battery module 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 two substrate terminals of the plurality of substrate terminals are electrically connected to one of the plurality of bus bars, and any one of the two substrate terminals is a dummy terminal.

9. The battery module of claim 8 , wherein a temperature sensor is mounted on the substrate body.

10. The battery module of claim 8 , wherein a temperature sensor is mounted on at least one of the plurality of substrate terminals.

11. The battery module of claim 10 , 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.

12. The battery module of claim 8 , wherein a fuse is mounted on at least one of the plurality of substrate terminals.

13. The battery module of claim 12 , 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 fuse is mounted on a surface opposite to the surface on which the extending part is formed.

14. The battery module of claim 8 , 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.

Assignees

• Sk Innovation Co Ltd

Inventors

• Kim Yong Uk
• Kwon Dae Won

Classifications

• H01M10/486 Primary

  for measuring temperature · CPC title

• H01M50/519

  comprising printed circuit boards [PCB] · CPC title

• H01M10/48

  Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte (constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569) · CPC title

• H01M50/569

  Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals (battery terminal connectors with integrated measuring arrangements G01R31/364) · CPC title

• H01M50/583

  in response to current, e.g. fuses · CPC title