Battery pack and vehicle including same

Patent metadata

Field	Value
Publication number	US-12562426-B2
Application number	US-202218010202-A
Country	US
Kind code	B2
Filing date	Jan 11, 2022
Priority date	Jan 11, 2021
Publication date	Feb 24, 2026
Grant date	Feb 24, 2026

Abstract

A battery pack according to an embodiment of the present disclosure includes at least one battery cell including a vent portion configured to force gas out; and a pack case in which the at least one battery cell is accommodated such that the vent portion faces a lower side of the battery pack. The vent portion is exposed from the battery pack.

First claim

What is claimed is:

1 . A battery pack, comprising:
at least one battery cell including a vent portion configured to force gas out; a pack case in which the at least one battery cell is accommodated such that the vent portion faces a lower side of the battery pack, with the vent portion being exposed from the battery pack; and a pack cover which coupled to the pack case and covering the at least one battery cell on a side opposite to the vent portion, wherein the pack case includes a case body covering the at least one battery cell, and coupled to the pack cover; and a cell insertion portion on a bottom of the case body into which the at least one battery cell is inserted, the cell insertion portion protrudes downward to a predetermined height below the pack case more than the vent portion, and the cell insertion portion covers a side of a bottom of the at least one battery cell.

2 . The battery pack according to claim 1 , wherein the pack cover has a cooling channel therein and configured to cool the at least one battery cell.

3 . The battery pack according to claim 2 , wherein the pack cover includes:
a bottom heat sink positioned in contact with the at least one battery cell; and a top heat sink coupled to the bottom heat sink to form the cooling channel inside.

4 . The battery pack according to claim 3 , wherein the at least one battery cell is fixed to a lower surface of the bottom heat sink.

5 . The battery pack according to claim 4 , wherein the pack cover includes:
a cooling water inlet port in communication with the cooling channel, and protruding from a side of the top heat sink; and a cooling water outlet port disposed in the top heat sink, spaced apart from the cooling water inlet port, and in communication with the cooling channel.

6 . The battery pack according to claim 1 , wherein the cell insertion portion has at least one opening through which the vent portion is exposed from the pack case.

7 . The battery pack according to claim 1 , wherein an inner space of the pack case is filled with a resin material to cover the at least one battery cell.

8 . The battery pack according to claim 7 , wherein a plurality of battery cells is provided, and
wherein the resin material is between the plurality of battery cells.

9 . The battery pack according to claim 8 , wherein the resin material includes a potting resin.

10 . The battery pack according to claim 1 , wherein the vent portion is provided at an end of a lengthwise direction of the at least one battery cell, and
wherein the end of the at least one battery cell is positioned below the pack case.

11 . The battery pack according to claim 10 , wherein the pack cover covers an opposite end of the at least one battery cell.

12 . A vehicle comprising at least one battery pack according to claim 1 .

13 . The vehicle according to claim 12 , wherein a lower surface of the pack case is spaced a predetermined height apart from an under body frame of the vehicle to form a safety space.

14 . The vehicle according to claim 12 , wherein the battery pack includes a reinforcing plate mounted in an under body frame of the vehicle.

15 . The vehicle according to claim 14 , wherein a lower surface of the pack case is spaced a predetermined height apart from the reinforcing plate to form a safety space.

Assignees

• Lg Energy Solution Ltd

Inventors

• Yang Jin-Oh
• Oh Kwang-Keun
• Jung In-Hyuk
• Choi Hae-Won

Classifications

• H01M2220/20

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

• H01M50/358

  External gas exhaust passages located on the battery cover or case · CPC title

• H01M50/414

  Synthetic resins, e.g. thermoplastics or thermosetting resins · CPC title

• B60L50/64

  Constructional details of batteries specially adapted for electric vehicles · CPC title

• H01M10/6567

  Liquids · CPC title