US-20260128408-A1 - BATTERY MODULE

US20260128408A1US 20260128408 A1US20260128408 A1US 20260128408A1US-20260128408-A1

Abstract

Provided is a battery module including a plurality of battery cells arranged so that main surfaces thereof face one another along a first direction and a cooling plate arranged between the plurality of battery cells, wherein the cooling plate includes a flow path through which cooling water flows therein, and a vertical cross-section of the cooling plate parallel to the first direction includes a pattern in which at least one or more types of polygons are combined.

Inventors

Sangyoon KIM

Assignees

SAMSUNG SDI CO., LTD.

Dates

Publication Date: 20260507
Application Date: 20250502
Priority Date: 20241107

Claims (20)

1 . A battery module comprising: a plurality of battery cells arranged so that main surfaces thereof face one another along a first direction; and a cooling plate arranged between the plurality of battery cells, wherein the cooling plate includes a flow path through which cooling water flows therein, and a vertical cross-section of the cooling plate parallel to the first direction includes a pattern in which at least one or more types of polygons are combined.
2 . The battery module of claim 1 , wherein: the flow path comprises a plurality of flow paths which are spaced apart from one another in a height direction of the cooling plate and arranged parallel to one another.
3 . The battery module of claim 2 , wherein: at least some of the plurality of flow paths are connected to one another.
4 . The battery module of claim 1 , wherein: the pattern includes at least one of a honeycomb and an auxetic structure.
5 . The battery module of claim 1 , wherein: the pattern has a negative Poisson's ratio.
6 . The battery module of claim 1 , wherein: the plurality of battery cells are arranged along a second direction perpendicular to the first direction on a plane to form cell units, and the cell units are arranged parallel to one another along the first direction.
7 . The battery module of claim 6 , wherein: the cooling plate extends along the second direction corresponding to an entire area of a cell unit adjacent thereto.
8 . The battery module of claim 2 , wherein: the cooling plate includes a hollow cavity and the flow path is arranged inside the hollow cavity.
9 . The battery module of claim 8 , wherein: a cross-section of the flow path has a honeycomb structure, and a cross-section of the cooling plate between the flow paths has an auxetic structure.
10 . The battery module of claim 1 , wherein: a height of the cooling plate is equal to or greater than a height of the battery cell.
11 . A battery module comprising: a plurality of battery cells arranged along a first direction and a second direction perpendicular to the first direction; and a cooling plate positioned between the plurality of battery cells, wherein: the plurality of battery cells are arranged so that main surfaces thereof face one another along the first direction, and among the plurality of battery cells, battery cells arranged along the second direction define cell units, and the cooling plate is positioned between the cell units, and the cooling plate includes a flow path through which cooling water flows therein, wherein: a vertical cross-section of the cooling plate perpendicular to the second direction includes a pattern in which at least one or more types of polygons are combined.
12 . The battery module of claim 11 , wherein the flow path comprises a plurality of flow paths which are spaced apart from one another in a height direction of the cooling plate and arranged parallel to one another.
13 . The battery module of claim 12 , wherein: at least some of the plurality of flow paths are connected to one another.
14 . The battery module of claim 11 , wherein: the pattern includes at least one of a honeycomb and an auxetic structure.
15 . The battery module of claim 11 , wherein: the pattern includes a negative Poisson's ratio.
16 . The battery module of claim 11 , wherein: the cell units are arranged parallel to one another along the first direction.
17 . The battery module of claim 16 , wherein: the cooling plate extends along the second direction corresponding to an entire area of a cell unit adjacent thereto.
18 . The battery module of claim 12 , wherein: the cooling plate includes a hollow cavity and the flow path is arranged inside the hollow cavity.
19 . The battery module of claim 18 , wherein: a cross-section of the flow path has a honeycomb structure, and a cross-section of the cooling plate between the flow paths has an auxetic structure.
20 . The battery module of claim 19 , wherein: a height of the cooling plate is equal to or greater than a height of the battery cell.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This present application claims priority to and the benefit under 35 U.S.C. §119(a)-(d) of Korean Patent Application No. 10-2024-0157116, filed on Nov. 7, 2024, in the Korean Intellectual Property Office, the entire disclosure of which is incorporated herein by reference. FIELD The present disclosure relates to a battery module. BACKGROUND Secondary batteries are batteries that can be charged and discharged, unlike primary batteries that cannot be recharged. Low-capacity secondary batteries are used in small, portable electronic devices such as smartphones, feature phones, laptops, digital cameras, and camcorders, while large-capacity secondary batteries are widely used as motor drive power supplies in hybrid cars, electric cars, or the like, and as power storage batteries. These secondary batteries include an electrode assembly including a positive electrode and a negative electrode, a case for accommodating the electrode assembly, and electrode terminals coupled to the electrode assembly. The herein-described information disclosed in the background technology of this disclosure is only intended to improve understanding of the background of the present disclosure and therefore may include information that does not constitute the related art. SUMMARY An object of the present disclosure is to provide a battery module having improved cell-to-cell strength and shock absorption. An object of the present disclosure is to provide a battery module having improved cooling efficiency. However, the technical problems to be solved by the present disclosure are not limited to the problems described herein, and other problems not mentioned may be clearly understood by those skilled in the art from the description of the disclosure described herein. According to aspects of the present disclosure, a battery module is disclosed, including: a plurality of battery cells arranged so that main surfaces thereof face one another along a first direction; and a cooling plate arranged between the plurality of battery cells, wherein the cooling plate includes a flow path through which cooling water flows therein, and a vertical cross-section of the cooling plate parallel to the first direction includes a pattern in which at least one or more types of polygons are combined. According to embodiments, the flow path may include a plurality of flow paths spaced apart from one another in a height direction of the cooling plate and arranged parallel to one another. According to embodiments, at least some of the plurality of flow paths may be coupled to one another. According to embodiments, the pattern may include at least one of a honeycomb and an auxetic structure. According to embodiments, the pattern may have a negative Poisson's ratio. According to embodiments, the plurality of battery cells are arranged along a second direction perpendicular to the first direction on a plane to form cell units, and the cell units may be arranged parallel to one another along the first direction. According to embodiments, the cooling plate may extend along the second direction to correspond to an entire area of a cell unit adjacent thereto. According to embodiments, the cooling plate may include a hollow cavity, and the flow path may be positioned inside the hollow cavity. According to embodiments, cross-sections of the flow paths may have honeycomb structures, and a cross-section of the cooling plate between the flow paths may have an auxetic structure. According to embodiments, a height of the cooling plate may be equal to or greater than a height of the battery cell. According to aspects of the present disclosure, a battery module is disclosed, including: a plurality of battery cells arranged along a first direction and a second direction perpendicular to the first direction; and a cooling plate positioned between the plurality of battery cells, wherein the plurality of battery cells are arranged so that main surfaces thereof face one another along the first direction, and among the plurality of battery cells, the battery cells arranged along the second direction define cell units, the cooling plate is positioned between the cell units, the cooling plate includes a flow path through which cooling water flows therein, and a vertical cross-section of the cooling plate perpendicular to the second direction includes a pattern in which at least one or more types of polygons are combined. According to embodiments, the flow path may include a plurality of flow paths spaced apart from one another in a height direction of the cooling plate and arranged parallel to one another. According to embodiments, at least some of the plurality of flow paths may be coupled to one another. According to embodiments, the pattern may include at least one of a honeycomb and an auxetic structure. According to embodiments, the pattern may have a negative Poisson's ratio. According to embodiments, the cell units may be arranged parallel