Battery module

Patent metadata

Field	Value
Publication number	US-12412946-B2
Application number	US-202318525059-A
Country	US
Kind code	B2
Filing date	Nov 30, 2023
Priority date	Oct 19, 2018
Publication date	Sep 9, 2025
Grant date	Sep 9, 2025

Abstract

A battery module includes a module including a series of cell stacks, each having a series of unit cells arranged in a first direction, and an insulation member insulating at least one unit cell. The battery module also includes a module housing and a series of receiving parts in the module housing accommodating the cell stacks. Each receiving part includes a fixed wall around a respective cell stack and having a portion in contact with the cell stack. The fixed wall includes a pair of end walls at opposite ends of the receiving part in the first direction. The pair of end walls are configured to engage respective end surfaces of the corresponding cell stack in the first direction. The battery module also includes a cooling channel below a floor surface of the module housing for a coolant to flow to cool the receiving parts and the cells stacks.

First claim

What is claimed is:

1. A battery module comprising:
a first module;
a second module adjacent to the first module in a first direction and coupled to the first module,
wherein each of the first module and the second module comprises:
a plurality of cell stacks;
a module housing; and
a plurality of receiving parts in the module housing, the plurality of receiving
parts being configured to accommodate the plurality of cell stacks; and a coupling part coupling the module housing of the first module to the module housing of the second module,
wherein each of the plurality of receiving parts comprises a fixed wall, wherein the module housing of the first module is coupled to the module housing of the second module in a first direction,
wherein a cooling channel for a coolant to flow to cool the plurality of receiving parts and the plurality of cell stacks is below a floor surface of the module housing, wherein the battery module further comprises a cooling plate coupled to the floor surface of the module housing, wherein the cooling channel is in the cooling plate, and a coolant line connected to the cooling channel of the module housing of each of the first and second modules,
wherein the coolant line extends in the first direction and comprises a plurality of port connection holes spaced from each other along a length direction of the coolant line and coupled to the cooling channel of each of the first and second modules,
wherein a plurality of guide protrusions extends on a lower surface of the floor surface in a second direction perpendicular to the first direction, the plurality of guide protrusions being spaced apart from each other in the first direction, and
wherein lengths of the plurality of guide protrusions vary in the first direction.

2. The battery module of claim 1 , wherein the cooling channel comprises at least one lateral wall that protrudes downward and surrounds the floor surface, the at least one lateral wall forms the cooling channel, and
wherein each of the first module and the second module further comprises a channel cover coupled to lower ends of the at least one lateral wall to close and seal the cooling channel.

3. The battery module of claim 2 , wherein the at least one lateral wall of the cooling channel is integral with the floor surface.

4. The battery module of claim 1 , wherein the coupling part comprises a first coupling part in a first wall of the module housing of the first module and a second coupling part in a second wall of the module housing of the second module, wherein the first wall is spaced from the second wall in the first direction.

5. The battery module of claim 1 , wherein the coolant line comprises:
an inflow line configured to supply coolant to the cooling channel; and
an outflow line configured to discharge the coolant from the cooling channel,
wherein the inflow line is connected to one side of the cooling channel of each of the first modules and the second module,
wherein the outflow line is connected to another side of the cooling channel of each of the first module and the second module, and
wherein the one side and the another side of the cooling channel are at opposite sides along a second direction perpendicular to the first direction.

6. The battery module of claim 1 , wherein at least one of the plurality of port connection holes has a different diameter than at least one other port connection hole of the plurality of port connection holes.

7. The battery module of claim 1 , wherein the module housing of each of the first module and the second module further comprises a separation wall that extends in a second direction perpendicular to the first direction and partitions an inner space surrounded by an outer wall of the module housing to form the plurality of receiving parts, and
wherein the separation wall forms a part of the fixed wall of each of the plurality of receiving parts at sides along the first direction, the separation wall contacts side surfaces of a pair of cell stacks in respective receiving parts of the plurality of receiving parts.

8. The battery module of claim 7 , wherein the fixed wall comprises a pair of end walls at opposite ends of each of the receiving parts in the second direction, and wherein an end wall of the pair of end walls facing the outer wall of the module housing is spaced apart from the outer wall along the second direction and forms a first impact absorption space between the end wall and the outer wall.

9. The battery module of claim 8 , wherein the plurality of receiving parts comprises two receiving parts adjacent to each other along the second direction, and
wherein end walls of the two receiving parts facing each other in the second direction are spaced apart from each other to form a second impact absorption space between the end walls.

10. The battery module of claim 8 , wherein each cell stack of the plurality of cell stacks comprises a pair of end supports at opposite end portions in the second direction, the pair of end supports having outer surfaces corresponding to respective end surfaces of a corresponding cell stack accommodated in each of the receiving parts.

11. The battery module of claim 10 , wherein the end walls are bent outwardly such that central portions of the end walls are spaced from the end surfaces, and
wherein the end surfaces are recessed inwardly such that central portions of the end surfaces are spaced from the end walls.

12. The battery module of claim 11 , wherein at least one end wall of the end walls comprises a plurality of first ribs that protrude in the second direction from an outer surface, the plurality of first ribs spaced from each other in the first direction and extend in a third direction perpendicular to each of the first direction and the second direction.

13. The battery module of claim 12 , wherein at least one end support of the pair of end supports comprises a plurality of second ribs protruding toward the at least one end wall from the end surface and spaced from each other in the first direction and the third direction.

14. The battery module of claim 13 , wherein the plurality of second ribs has a lattice structure.

Assignees

• Samsung Sdi Co Ltd

Inventors

• Park Daeyeop
• Kim Sungyong
• Kim Jaeho
• Moon Soodeok
• Bae Jangwoong
• Lee Junhyung
• Lim Dooyong
• LIM Jisoon
• Heo Eungi

Classifications

• H01M50/505

  comprising a single busbar · CPC title

• H01M50/209

  adapted for prismatic or rectangular cells (H01M50/216 takes precedence) · CPC title

• H01M50/289

  characterised by spacing elements or positioning means within frames, racks or packs (spacing elements inside cells other than separators, membranes or diaphragms H01M50/471) · CPC title

• H01M2220/20

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

• H01M10/647

  Prismatic or flat cells, e.g. pouch cells · CPC title