Battery pack and device including the same

Patent metadata

Field	Value
Publication number	US-2026100475-A1
Application number	US-202519416955-A
Country	US
Kind code	A1
Filing date	Dec 11, 2025
Priority date	Apr 14, 2020
Publication date	Apr 9, 2026
Grant date	—

Abstract

A battery pack includes a plurality of battery modules; a vent frame disposed along the edges of the plurality of battery modules; and a housing accommodating the plurality of battery modules and the vent frame, wherein the vent frame includes a pair of vertical beams formed parallel to a first direction and a pair of horizontal beams formed parallel to a second direction intersecting the first direction, the vertical beam and the horizontal beam each having a shape of a tube and including a cover formed on the vertical beam or the horizontal beam in a length direction, and a passage surrounded by the cover for gas to pass through.

First claim

WHAT IS CLAIMED:

1 . A battery pack comprising:
a plurality of battery cell stacks; a lower housing accommodating the plurality of battery cell stacks, the lower housing having a bottom wall, a pair of end walls spaced from each other in a first direction and a pair of side walls spaced from each other in a second direction; and a plurality of covers, each cover being separately removable from the lower housing, wherein the plurality of battery cell stacks are arranged in a plurality of rows, each row of the plurality of rows extending between the pair of side walls.

2 . The battery pack of claim 1 , wherein each of the plurality of covers extends over one row of the plurality of rows.

3 . The battery pack of claim 1 , wherein each of the plurality of rows has at least two battery cell stacks of the plurality of battery cell stacks.

4 . The battery pack of claim 1 , wherein each of the plurality of covers extends between the pair of side walls of the lower housing.

5 . The battery pack of claim 1 , wherein each of the plurality of covers is coupled to the lower housing.

6 . The battery pack of claim 1 , wherein each of the plurality of covers is coupled to the pair of side walls.

7 . The battery pack of claim 1 , wherein each of the plurality of battery cell stacks has a module frame.

8 . The battery pack of claim 1 , further comprising a vent frame in the lower housing, the vent frame having a passage.

9 . The battery pack of claim 8 , wherein the vent frame surrounds the plurality of battery cell stacks.

10 . The battery pack of claim 8 , wherein the vent frame includes at least one first connection hole opposite to one of the plurality of battery cell stacks.

11 . The battery pack of claim 8 , further comprising at least one burst portion formed on an outer surface of the vent frame.

12 . The battery pack of claim 11 , wherein the at least one burst portion extends outside of the lower housing.

13 . The battery pack of claim 11 , wherein the at least one burst portion includes a burst surface configured to burst when a pressure of introduced gas becomes a predetermined pressure.

14 . The battery pack of claim 13 , wherein the at least one burst portion has a wing portion coupled to a side wall of the lower housing.

15 . The battery pack of claim 11 , further comprising a vent path bracket extending between the vent frame and the at least one burst portion.

16 . The battery pack of claim 8 , wherein each of the plurality of battery cell stacks has a module frame and a vent gate extending from the module frame to the vent frame.

17 . The battery pack of claim 8 , wherein the passage is formed by a first inner cover and a first outer cover.

18 . The battery pack of claim 11 , wherein the at least one burst portion is a pair of burst portions on a same side of the vent frame.

19 . The battery pack of claim 13 , wherein the burst surface is inside the passage.

20 . A device comprising at least one battery pack according to claim 1 .

Assignees

• Lg Energy Solution Ltd

Inventors

• Chun Yongho
• Kim Donghyun
• Jang Byung Do
• Lee Hyoungsuk

Classifications

• H01M50/271

  Lids or covers for the racks or secondary casings · CPC title

• H01M50/211

  adapted for pouch cells · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M50/30

  Arrangements for facilitating escape of gases · CPC title

• H01M50/342

  Non-re-sealable arrangements · CPC title