Battery pack

Patent metadata

Field	Value
Publication number	US-2024186615-A1
Application number	US-202318448800-A
Country	US
Kind code	A1
Filing date	Aug 11, 2023
Priority date	Dec 1, 2022
Publication date	Jun 6, 2024
Grant date	—

Abstract

A battery pack includes: a base plate having a first surface for supporting a plurality of battery modules and including a cooling passage configured to receive a refrigerant; a lower cover covering a second surface of the base plate; a frame portion on the first surface of the base plate and including a plurality of frames coupled to each other by a fastening member; a sealing member sealing spaces between the frames of the frame portion; and an upper cover covering an upper portion of the frame portion.

First claim

What is claimed is:

1 . A battery pack comprising:
a base plate having a first surface for supporting a plurality of battery modules and comprising a cooling passage configured to receive a refrigerant; a lower cover covering a second surface of the base plate; a frame portion on the first surface of the base plate and comprising a plurality of frames coupled to each other by a fastening member; a sealing member sealing spaces between the frames of the frame portion; and an upper cover covering an upper portion of the frame portion.

2 . The battery pack of claim 1 , wherein the cooling passage is on a second surface of the base plate that is opposite to the first surface of the base plate.

3 . The battery pack of claim 2 , wherein the base plate comprises a plurality of cooling plates having edges that are welded to each other.

4 . The battery pack of claim 3 , wherein the base plate further comprises:
a first cooling plate having a second surface from which a first cooling passage protrudes; a second cooling plate having a first edge coupled to a first edge of the first cooling plate and a second surface from which a second cooling passage protrudes; and a third cooling plate having a first edge coupled to a second edge of the second cooling plate and a second surface from which a third cooling passage protrudes.

5 . The battery pack of claim 4 , wherein the first to third cooling passages are each formed as a plurality in the first to third cooling plates, respectively.

6 . The battery pack of claim 5 , further comprising a refrigerant supply guide at a first side of the second surface of the base plate to guide supply of the refrigerant to portions of the first cooling passage and the second cooling passage.

7 . The battery pack of claim 6 , wherein the refrigerant supply guide is configured to supply the refrigerant to portions of the first cooling passage of the first cooling plate and the second cooling passage of the second cooling plate.

8 . The battery pack of claim 7 , wherein the refrigerant supply guide extends in a width direction of the first cooling plate such that a portion thereof covers a portion of the second surface of the second cooling plate to supply the refrigerant to portions of the first cooling passage and the second cooling passage.

9 . The battery pack of claim 8 , wherein the refrigerant supply guide comprises:
a supply guide body extending in the width direction of the first cooling plate to cover portions of the first cooling plate and the second cooling plate to move a refrigerant therein; an inlet protrusion protruding from a first side of the supply guide body and through which the refrigerant flows; and a plurality of supply protrusions protruding from a second side of the supply guide body to supply the refrigerant to portions of the first cooling passage and the second cooling passage.

10 . The battery pack of claim 8 , further comprising a distribution supply guide installed at a second side of the second surface of the base plate and configured to distribute the refrigerant supplied by the refrigerant supply guide.

11 . The battery pack of claim 10 , wherein the distribution supply guide comprises:
a distribution guide body extending in a width direction of the base plate from the second side of the second surface of the base plate to move the refrigerant therein; and a plurality of distribution protrusions protruding from a side surface of the distribution guide body to be connected to the first cooling passage, the second cooling passage, and the third cooling passage.

12 . The battery pack of claim 11 , further comprising a refrigerant discharge guide connected to some of the first cooling passages of the first cooling plate and the third cooling passage of the third cooling plate to guide discharge of the refrigerant to the outside on the second surface of the base plate.

13 . The battery pack of claim 12 , wherein the refrigerant discharge guide extends in a width direction of the first cooling plate such that a portion thereof covers a portion of the second surface of the second cooling plate to discharge and guide the refrigerant flowing through the third cooling passage and some of the second cooling passages to the outside.

14 . The battery pack of claim 13 , wherein the refrigerant discharge guide comprises:
a discharge guide body extending in a width direction of the third cooling plate such that a portion thereof covers a portion of the second surface of the second cooling plate to move the refrigerant therein; a connecting protrusion protruding from a first side of the discharge guide body and connected to some of the second cooling passages and the third cooling passage to receive the refrigerant; and a discharge protrusion protruding from a second side of the discharge guide body to discharge the refrigerant to the outside.

15 . The battery pack of claim 1 , wherein the sealing member comprises:
a first sealer in an inlet groove on any one surface between the frames; and a second sealer in a position of a fastening hole in at least one of the frames to allow the fastening member to be coupled thereto.

16 . The battery pack of claim 15 , wherein the first sealer contacts a side surface of the frames by allowing a first side to be inserted into the inlet groove and a second side to partially protrude out of the inlet groove.

17 . The battery pack of claim 15 , wherein the first sealer has a linear shape in the inlet groove.

18 . The battery pack of claim 17 , wherein the first sealer has a bent portion that is bent to contact an upper surface of the frames at an upper end of the first sealer.

19 . The battery pack of claim 18 , wherein the bent portion of the first sealer is adhered to the upper cover by an adhesive member.

20 . The battery pack of claim 17 , wherein the second sealer has a through hole through which the fastening member extends to be inserted into the fastening hole at a position between the frames.

21 . The battery pack of claim 17 , wherein the second sealer has a round shape inserted into the fastening hole.

22 . The battery pack of claim 1 , wherein the frame portion comprises:
a first side frame coupled to a first edge of the base plate; a second side frame coupled to a second edge of the base plate; a first end frame having opposite ends connected to a first end of each of the first side frame and the second side frame by a fastening member; a second end frame having opposite ends connected to a second end of each of the first side frame and the second side frame by a fastening member; a plurality of first reinforcement bars having a first end connected to a side surface of the first side frame by a fastening member and a second end connected to a side surface of the second side frame by a fastening member; and a plurality of second reinforcement bars having a first end connected to a side surface of the first end frame by a fastening member and a second end connected to the second end frame by a fastening member, the second reinforcement bars crossing the first reinforcement bars.

23 . The battery pack of claim 22 , wherein an adhesive groove is in a lower surface of the frame portion, and
wherein an adhesive for fixing the base plate is applied to the adhesive groove.

24 . The battery pack of claim 1 , further comprising a plurality of battery modules, each of the battery modules

Assignees

• Samsung Sdi Co Ltd

Inventors

• Jeon Jeehoon
• Ji Taeho
• Moon Soodeok
• Ahn Soomin
• Ryu Jaelim
• Kwak Dongsik
• Woo Beomjun

Classifications

• H01M2220/20

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

• H01M10/625

  Vehicles · CPC title

• H01M50/249

  specially adapted for aircraft or vehicles, e.g. cars or trains (constructional details of batteries specially adapted for electric vehicles B60L50/64) · CPC title

• H01M50/204

  Racks, modules or packs for multiple batteries or multiple cells · CPC title

• H01M50/244

  Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method · CPC title