Battery Module

Patent metadata

Field	Value
Publication number	US-2025038330-A1
Application number	US-202318716646-A
Country	US
Kind code	A1
Filing date	Sep 26, 2023
Priority date	Sep 27, 2022
Publication date	Jan 30, 2025
Grant date	—

Abstract

Disclosed herein is a battery module including a plurality of battery cells, a cell frame provided with a cell insertion space into which the respective battery cells are inserted, and a support rib dividing the cell insertion space and supporting the respective battery cells. A firewall part in the cell insertion space is provided to surround the respective battery cells. The cell frame is provided so that its thickness becomes thicker at least in part toward the central portion of the cell frame along the insertion direction of the battery cell.

First claim

1 . A battery module comprising:
a plurality of battery cells; a cell frame provided with a cell insertion space into which the respective battery cells are inserted, and a support rib dividing the cell insertion space and supporting the respective battery cells; and a firewall part provided in the cell insertion space and provided to surround the respective battery cells, wherein the cell frame is provided so that its thickness becomes thicker at least in part toward the central portion of the cell frame along the insertion direction of the battery cell.

2 . The battery module according to claim 1 , wherein
the cell frame is provided so that its thickness becomes thicker as it goes from the upper end of the cell frame to the central portion of the cell frame, and is provided so that its thickness becomes narrower as it goes from the central portion to the lower end of the cell frame, along the insertion direction of the battery cell.

3 . The battery module according to claim 1 , wherein
in the cell frame, the cell insertion space is divided up and down by the support rib, and the upper space of the cell insertion space, which is the top of the support rib, and the lower space of the cell insertion space, which is the bottom of the support rib, are connected to each other to enable fluid movement.

4 . The battery module according to claim 1 , wherein
the cell frame has a shape that the upper space and the lower space are symmetrical to each other based on the support rib.

5 . The battery module according to claim 1 , wherein
the firewall part comprises a potting resin, in which it is injected into the cell insertion space and cured to be in a state of surrounding the respective battery cells.

6 . The battery module according to claim 5 , wherein
the potting resin is injected into the entire region of the cell insertion space.

7 . The battery module according to claim 6 , wherein
the potting resin comprises any one of a silicone-based resin, a urethane-based resin, or an epoxy-based resin.

8 . The battery module according to claim 1 , wherein
the firewall part contacts the inner surface of the cell insertion space and the outer peripheral surface of each battery cell, respectively, and is disposed to divide adjacent battery cells.

9 . The battery module according to claim 8 , wherein
the firewall part is provided so that the width between the inner surface of the cell frame and the battery cell closest to the cell frame becomes narrower as it goes from the upper end of the firewall part to the central portion along the insertion direction of the battery cell, and is provided so that it becomes wider as it goes from the central portion of the firewall part to the lower end of the firewall part.

10 . The battery module according to claim 1 , wherein
the support rib has a plurality of rib holes into which the respective battery cells are inserted.

11 . The battery module according to claim 10 , wherein
the support rib is formed integrally with the cell frame.

12 . The battery module according to claim 10 , wherein
the support rib is disposed to be spaced apart along the peripheries of the rib holes, and comprises a plurality of support protrusions provided to support the side surfaces of the battery cells inserted into the rib holes.

13 . The battery module according to claim 12 , wherein
the support protrusion is formed to protrude from at least one of the top or the bottom of the support rib.

14 . The battery module according to claim 1 , further comprising
a support pillar passing through the support rib up and down, disposed in parallel with the battery cell, and coupled to the support rib.

15 . The battery module according to claim 14 , further comprising:
an upper cover mounted on the top of the support pillar and coupled to the cell frame to cover the open top of the cell frame; and a lower cover mounted on the bottom of the support pillar and coupled to the cell frame to cover the open bottom of the cell frame.

Assignees

• Lg Energy Solution Ltd

Inventors

• Jeon Byeong Jun
• An Ji Myong
• Son Young Su

Classifications

• H01M50/258

  Modular batteries; Casings provided with means for assembling · CPC title

• H01M50/209

  adapted for prismatic or rectangular cells (H01M50/216 takes precedence) · CPC title

• H01M50/24 Primary

  adapted for protecting batteries from their environment, e.g. from corrosion (thermal insulation H01M10/658) · CPC title

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• H01M50/213 Primary

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