Battery sub-packing unit and battery module including the same

Patent metadata

Field	Value
Publication number	US-12176570-B2
Application number	US-202318493805-A
Country	US
Kind code	B2
Filing date	Oct 25, 2023
Priority date	Feb 7, 2020
Publication date	Dec 24, 2024
Grant date	Dec 24, 2024

Abstract

A battery sub-packing unit includes a plurality of secondary battery cells, a cell support member including a seating portion for accommodating the plurality of secondary battery cells, and a venting inducing portion connecting the seating portion to an external area, and a case member provided to surround the secondary battery cell accommodated in the seating portion and to seal around the secondary battery cell.

First claim

What is claimed is:

1. A battery module, comprising:
a plurality of secondary battery cells;
a battery sub-packing unit including a cell support member accommodating a plurality of the secondary battery cells and a case member provided to surround the secondary battery cells;
a body frame member in which a plurality of the battery sub-packing units are installed, and
a barrier member disposed between the plurality of battery sub-packing units adjacent to each other and configured to prevent spreading of flames or heat transfer,
wherein the cell support member includes a seating portion accommodating the secondary battery cell and a venting inducing portion allowing the seating portion to communicate with the outside,
wherein the cell support member includes a liquid guide tab disposed below the venting inducing portion and including a rail groove for guiding leakage of the electrolyte discharged from the secondary battery cell formed therein,
wherein the barrier member includes:
a shielding surface portion disposed between the case members adjacent to each other and having outer surfaces opposing each other; and
a support protrusion provided on the shielding surface portion and formed to protrude toward an outer surface of the case member.

2. The battery module of claim 1 , wherein the barrier member is disposed between a plurality of the case members adjacent to each other with a spacing gap between adjacent battery sub-packing units is at least 7 mm therebetween.

3. The battery module of claim 1 , wherein the support protrusion is formed to protrude from the shielding surface portion in a form of a hemispherical shape or a pyramidal pyramid shape in point contact with an outer surface of the case member.

4. The battery module of claim 3 , wherein the support protrusion is formed to protrude from the shielding surface portion in a form of a semicircular columnar shape or a prismatic columnar shape in line contact with an outer surface of the case member.

5. The battery module of claim 1 , wherein at least a portion of the shielding surface portion is formed in a form of bellows.

6. The battery module of claim 1 , wherein the barrier member is formed of a thermosetting polymer material, a polyphenylene sulfide material, or a material including gypsum which maintain a shape thereof up to at least 800° C.

Assignees

• Sk On Co Ltd

Inventors

• Kim Suk Chul
• Kwon Dae Won
• Kim Yong Uk
• Seok Jong Ho

Classifications

• H01M50/211

  adapted for pouch cells · CPC title

• H01M10/0525 Primary

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M50/186

  characterised by the disposition of the sealing members · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M50/293

  characterised by the material · CPC title