Battery pack and device including the same

Patent metadata

Field	Value
Publication number	US-12438227-B2
Application number	US-202117772096-A
Country	US
Kind code	B2
Filing date	Apr 13, 2021
Priority date	Apr 29, 2020
Publication date	Oct 7, 2025
Grant date	Oct 7, 2025

Abstract

Discussed is a battery pack including a plurality of battery modules; a venting inducing frame disposed along edges of the plurality of battery modules and forming a venting passage to vent at least one of gas and flame; a venting gate to connect an inside of at least one of the plurality of battery modules and the venting inducing frame; and a quenching member disposed in a passage of the venting gate.

First claim

The invention claimed is:

1. A battery pack comprising:
a plurality of battery modules;
a venting inducing frame disposed along edges of the plurality of battery modules and forming a venting passage to vent at least one of gas and flame;
a venting gate to connect an inside of at least one of the plurality of battery modules and the venting inducing frame;
a pack housing accommodating the plurality of battery modules and the venting inducing frame, and
a quenching member disposed in a passage of the venting gate,
wherein the venting inducing frame includes a pair of first beams formed in parallel to a first direction and a pair of second beams formed in parallel to a second direction traversing the first direction,
wherein the plurality of battery modules are disposed on a bottom surface of the pack housing along at least one of the first direction and the second direction, respectively, and
wherein the venting gate extends outward from the at least one of the plurality of battery modules and is inserted into the venting inducing frame.

2. The battery pack of claim 1 , wherein the quenching member is made of a quenching mesh.

3. The battery pack of claim 1 ,
wherein the first beams and the second beams respectively have a pipe shape and include a cover formed in length directions of the first beams and the second beams, and the venting passage surrounded by the cover and formed to allow the at least one of gas and flame to pass through.

4. The battery pack of claim 3 , wherein at least one rupture portion connected to the venting passage is further included on an outside of one of the second beams and the first beams.

5. The battery pack of claim 4 , wherein the passage of the venting gate and a passage of the rupture portion are formed to cross each other.

6. The battery pack of claim 4 , wherein the at least one rupture portion includes a wing portion connected to at least one of the first beams and the second beams, the wing portion protruding from pack housing, and
wherein the wing portion includes parallel slits to pass the at least one of gas and flame in a radial direction of the wing portion.

7. The battery pack of claim 3 , wherein the cover of the second beams includes at least one connection hole facing at least one of the plurality of battery modules, and
wherein the venting gate is formed so that the venting gate communicates with the second beams facing the at least one connection hole.

8. The battery pack of claim 3 , wherein a connection hole communicating with a passage of another of the first beams and the second beams is installed on a cover of one of the first beams and the second beams on a portion where the first beams traverse the second beams.

9. The battery pack of claim 1 ,
wherein the pack housing includes an upper cover and a lower housing, and
wherein a pack gasket is formed between the upper cover and the lower housing.

10. The battery pack of claim 1 , wherein the plurality of battery modules include an end plate for covering a battery cell stacked body exposed on a front side and a rear side of a module frame of each battery module,
wherein an opening is formed in a part of the end plate, and
wherein the venting gate is connected to the opening of the end plate, and protrudes away from an outer planar surface of the end plate.

11. The battery pack of claim 10 , wherein a gate gasket is formed between the venting gate and the end plate.

12. The battery pack of claim 10 , wherein the venting gate is tubular, and an open end of the venting gate is separated from the outer planar surface of the end plate by a passage of the venting gate.

13. A device comprising a battery pack according to claim 1 .

14. The battery pack of claim 1 , wherein each second beam includes a second internal cover adjacent the plurality of battery modules and a second external cover adjacent the pack housing,
wherein each of the second internal cover and the second external cover includes an upper surface, a lower surface, and a wall surface that connects the upper surface to the lower surface, respectively, and
wherein the upper surface of the second internal cover and the upper surface of the second external cover are coupled by overlapping each other, and the lower surface of the second internal cover and the lower surface of the second external cover are coupled by overlapping each other.

15. A battery module comprising:
a module frame having an interior to accommodate at least one battery cell;
an end plate connected to the module frame;
a venting gate protruding away from an outer planar surface of the end plate, the venting gate having an open end and a passage that communicate with the interior of the module frame;
a quenching member having a plurality of stacked layers and configured to extinguish flames and discharge gas; and
wherein the venting gate extends outward from the battery module and is configured to be inserted into a venting inducing frame.

16. A battery pack comprising:
the battery module according to claim 15 ;
the venting inducing frame encircling the battery module, and having a venting passage to vent at least one of gas and flame generated by the at least one battery cell; and
a rupture portion communicating with the venting passage.

17. The battery module of claim 15 , wherein the venting gate is tubular, and the open end of the venting gate is separated from the outer planar surface of the end plate by the passage.

Assignees

• Lg Energy Solution Ltd

Inventors

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

Classifications

• H01M2220/20

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

• H01M2200/20

  Pressure-sensitive devices · CPC title

• H01M50/383

  Flame arresting or ignition-preventing means · CPC title

• H01M50/35 Primary

  Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages · CPC title

• H01M50/24

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