Battery pack and vehicle comprising same

Patent metadata

Field	Value
Publication number	US-12362416-B2
Application number	US-202218014324-A
Country	US
Kind code	B2
Filing date	Mar 4, 2022
Priority date	Mar 4, 2021
Publication date	Jul 15, 2025
Grant date	Jul 15, 2025

Abstract

Discussed is a battery pack that can include a battery cell assembly including a plurality of battery cells, a busbar assembly on one side of the battery cell assembly, a cooling unit between the plurality of battery cells, and a cell accommodation unit configured to partition the plurality of battery cells together with the cooling unit.

First claim

What is claimed is:

1. A battery pack, comprising:
a battery cell assembly including a plurality of battery cells;
a busbar assembly disposed at one side of the battery cell assembly;
a cooling unit disposed between the plurality of battery cells;
a cell accommodation unit partitioning the plurality of battery cells together with the cooling unit; and
a filling member filled in a space between the cooling unit and the plurality of battery cells and in a space between the cell accommodation unit and the cooling unit,
wherein the filling member is further filled in the busbar assembly to at least partially cover the busbar assembly, and
wherein the filling member continuously covers the plurality of battery cells, the busbar assembly, the cooling unit and the cell accommodation unit without discontinuity.

2. The battery pack according to claim 1 , wherein the filling member is filled to cover the battery cell assembly and the cell accommodation unit.

3. The battery pack according to claim 1 , wherein the filling member is continuously filled in between the busbar assembly and the plurality of battery cells in a vertical direction of the battery cell assembly.

4. The battery pack according to claim 1 , wherein the filling member comprises a potting resin.

5. The battery pack according to claim 1 , wherein the cell accommodation unit includes at least one receiving member formed to have a predetermined length in a longitudinal direction of the battery cell assembly and configured to cover at least one side surface of the battery cell.

6. The battery pack according to claim 5 , wherein the at least one receiving member has a shape corresponding to outer surfaces of the plurality of battery cells facing each other.

7. The battery pack according to claim 5 , wherein the at least one receiving member is provided in plurality, and the plurality of receiving members are disposed to be spaced apart from each other by a predetermined distance in a width direction of the battery cell assembly.

8. The battery pack according to claim 7 , wherein each of the plurality of receiving members includes a plurality of cell receiving parts for receiving the battery cells facing each other.

9. The battery pack according to claim 8 , wherein the plurality of cell receiving parts are formed in a concave shape to a predetermined depth.

10. The battery pack according to claim 8 , wherein the plurality of cell receiving parts have shapes corresponding to outer surfaces of the battery cells facing each other.

11. The battery pack according to claim 8 , wherein an adhesive is provided between the battery cell and the cell receiving part.

12. The battery pack according to claim 11 , wherein the adhesive comprises a potting resin.

13. The battery pack according to claim 7 , wherein the cooling unit is disposed between the plurality of receiving members in a width direction of the battery cell assembly.

14. The battery pack according to claim 13 , further comprising:
a plurality of cooling tubes formed to have a predetermined length in a longitudinal direction of the battery cell assembly, disposed between the plurality of battery cells, and provided with a cooling channel for circulating cooling water therein; and
a cooling water inflow/outflow part connected to the plurality of cooling tubes to communicate with the cooling channels of the plurality of cooling tubes.

15. The battery pack according to claim 14 , wherein the plurality of cooling tubes are disposed between the plurality of receiving members.

16. The battery pack according to claim 14 , wherein the cooling channel comprises:
an upper channel provided near the busbar assembly;
a lower channel spaced apart from the upper channel; and
a connection channel connecting the upper channel and the lower channel.

17. The battery pack according to claim 16 , wherein the connection channel is provided at an opposite side of the cooling water inflow/outflow part.

18. The battery pack according to claim 16 , wherein the cooling water inflow/outflow part comprises:
a cooling water feed port connected to the upper flow path; and
a cooling water outlet port connected to the lower flow path.

19. The battery pack according to claim 16 , wherein the upper flow path and the lower flow patch are provided in plurality.

20. The battery pack according to claim 1 , further comprising:
a cell support part coupled to the cell accommodation unit to support the battery cell assembly and the cooling unit.

21. The battery pack according to claim 20 , wherein the cell support part is provided with a support rib protruding to a predetermined height to support the cell accommodation unit.

22. The battery pack according to claim 21 , wherein a plurality of support ribs are provided, and he cooling unit is between the plurality of the support ribs.

23. The battery pack according to claim 21 , wherein the support rib is provided with an insertion groove having a predetermined depth into which a bottom of the cell accommodation unit is inserted.

24. The battery pack according to claim 20 , wherein the filling member further continuously covers the cell support part without discontinuity.

25. The battery pack according to claim 20 , wherein the cell support is disposed perpendicular to the cell accommodation unit.

26. The battery pack according to claim 20 , wherein the cell accommodation unit supports a side portion of the battery cell, and the cell support supports a bottom portion of the battery cell.

27. The battery pack according to claim 20 , wherein the cell support part comprises a cell seating part on which the battery cell is seated.

28. The battery pack according to claim 27 , wherein the cell seating part is formed as an opening having a predetermined size.

29. The battery pack according to claim 28 , wherein the opening has a size not exceeding a diameter the battery cell.

30. The battery pack according to claim 1 , wherein the cell accommodation unit is arranged in a honeycomb shape.

31. The battery pack according to claim 1 , wherein the busbar assembly is disposed at an upper side of the battery cell assembly.

32. The battery pack according to claim 1 , wherein the cell accommodation unit is provided at both outermost sides thereof with a reinforcement structure for reinforcing rigidity of the battery cell assembly.

33. The battery pack according to claim 32 , wherein the reinforcement structure is provided as a prismatic concavo-convex structure protruding outward from the cell accommodation unit.

34. The battery pack according to claim 32 , wherein the reinforcement structure is continuously formed along a longitudinal direction of the battery cell assembly.

35. The battery pack according to claim 32 , wherein the reinforcement structure has a triangle prism shape or a trapezoidal prism shape.

36. The battery pack according to claim 32 , wherein the filling member is filled to cover the reinforcement structure.

37. The battery pack according to claim 1 , wherein the cell accommodation unit includes at least one receiving member formed to have a predetermined length in a longitudinal direction of the battery cell assembly and covering at least one sid

Assignees

• Lg Energy Solution Ltd

Inventors

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

Classifications

• H01M50/507

  comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules · CPC title

• H01M10/613 Primary

  Cooling or keeping cold · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M2220/20

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

• H01M10/625

  Vehicles · CPC title