Battery module

Patent metadata

Field	Value
Publication number	US-11824173-B2
Application number	US-201916676153-A
Country	US
Kind code	B2
Filing date	Nov 6, 2019
Priority date	Nov 7, 2018
Publication date	Nov 21, 2023
Grant date	Nov 21, 2023

Abstract

Discussed is a battery module, and more particularly, to a battery module in which an inner space between a battery cell and a metal plate is filled with a heat transfer member so that conduction of heat generated in the battery cell is improved.

First claim

What is claimed is:

1. A battery module comprising:
battery cells;
a metal plate configured to contact and be electrically connected to electrode terminals of the battery cells, and comprising a spot welding section elevated away from the electrode terminals and provided with a plurality of protrusions contacting the respective electrode terminals;
inner spaces located between the spot welding section and the respective electrode terminals of the battery cells; and
a heat conductive member disposed in the inner spaces between the electrode terminals of the battery cells and the spot welding section of the metal plate.

2. The battery module of claim 1 , wherein the metal plate is provided with:
a welding base part provided with the spot welding section that is flat shaped, and having ductility for being movable downward so as to contact and be welded to the electrode terminals of the battery cells;
a plate contact part formed in a shape bent and extending from an edge of the welding base part and contacting upper surfaces of the electrode terminals; and
a heat conductive member injection opening perforated in a predetermined region of an upper surface of the welding base part so that the heat conductive member is injected therethrough,
wherein the battery module is configured to comprise a heat conductive member arrangement part having a space formed inside the welding base part so as to be filled by the injected heat conductive member.

3. The battery module of claim 2 , wherein the heat conductive member includes a liquid glue or a heat dissipation paste and is cured after being injected into the heat conductive member arrangement part.

4. The battery module of claim 1 , wherein the metal plate is joined to the electrode terminals of the battery cells by spot welding.

5. The battery module of claim 1 , wherein the battery cells are provided in a single pair in which positive electrode terminals and negative electrode terminals are alternately arranged.

6. A device using the battery module of claim 1 as a power source.

7. The battery module of claim 1 , wherein the plurality of protrusions penetrate the heat conductive member.

8. A battery module comprising:
battery cells;
a metal plate having circular sections connected by a body, and configured to contact and be electrically connected to electrode terminals of the battery cells, and comprising a spot welding section elevated away from the electrode terminals and provided with a plurality of protrusions contacting the electrode terminals;
inner spaces located between the spot welding section and the respective electrode terminals of the battery cells; and
a heat conductive member disposed in the inner spaces between the electrode terminals of the battery cells and the spot welding section of the metal plate.

9. The battery module of claim 8 , wherein the metal plate is provided with:
an elevated part formed in a shape bent to an outside of a surface on which the metal plate and the electrode terminals of the battery cells are coupled;
a welding base part provided with the spot welding section of a flat-shape and having ductility for being movable downward so as to contact and be welded to the electrode terminals of the battery cells;
a plate contact part formed in a shape bent and extending from an edge of the elevated part and contacting an upper surface of each of the electrode terminals; and
a heat conductive member injection opening perforated in a predetermined region of an upper end of the elevated part so that the heat conductive member is injected therethrough,
wherein the battery module is configured to comprise a heat conductive member arrangement part having a space formed inside the elevated part and the welding base part so as to be filled by the injected heat conductive member.

10. The battery module of claim 9 , wherein the elevated part has a height of 1.5 to 3 times a thickness of the metal plate.

11. The battery module of claim 10 , wherein the height of the elevated part is 1 to 2 the thickness of the metal plate.

12. The battery module of claim 9 , wherein the heat conductive members includes a liquid glue or a heat dissipation paste and is cured after being injected into the heat conductive member arrangement part.

13. The battery module of claim 8 , wherein the metal plate is joined to the electrode terminals of the battery cells by spot welding.

14. The battery module of claim 8 , wherein the battery cells are provided in a single pair in which positive electrode terminals and negative electrode terminals are alternately arranged.

15. A device using the battery module of claim 8 as a power source.

Assignees

• Lg Chemical Ltd
• Lg Energy Solution Ltd

Inventors

• Lee Young Kyu
• Son Young Su
• Jang Jae Young

Classifications

• H01M10/613 Primary

  Cooling or keeping cold · CPC title

• H01M10/653

  characterised by electrically insulating or thermally conductive materials · CPC title

• H01M10/6551

  Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings · CPC title

• H01M10/6554

  Rods or plates · CPC title

• H01M50/213

  adapted for cells having curved cross-section, e.g. round or elliptic (H01M50/209, H01M50/216 take precedence) · CPC title