Battery module and battery pack including the same

Patent metadata

Field	Value
Publication number	US-12355089-B2
Application number	US-202117641325-A
Country	US
Kind code	B2
Filing date	Jan 15, 2021
Priority date	Feb 4, 2020
Publication date	Jul 8, 2025
Grant date	Jul 8, 2025

Abstract

A battery module includes a battery cell stack in which a plurality of battery cells are stacked; a frame formed on upper, lower, left and right surfaces to house the battery cell stack; and an insulation coating layer formed on the upper, lower, left and right surfaces inside the frame, wherein a plurality of grooves corresponding to a bottom shape of the battery cell stack are formed on a lower surface inside the frame, and wherein a lower surface of the insulation coating layer is formed to be coated on the upper surface of the plurality of grooves.

First claim

The invention claimed is:

1. A battery module comprising:
a battery cell stack in which a plurality of battery cells are stacked,
a frame having an upper surface, a lower surface, a left surface and a right surface to house the battery cell stack, and
an insulation coating layer having an upper surface, a lower surface, a left surface and a right surface respectively formed on the upper surface, the lower surface, the left surface and the right surface of the frame,
wherein a plurality of grooves corresponding to a bottom shape of the battery cell stack are formed on the lower surface of the frame, and
wherein the lower surface of the insulation coating layer is coated on an upper surface of the plurality of grooves.

2. The battery module according to claim 1 , further comprising a thermally conductive resin layer between the lower portion of the battery cell stack, and the frame and the insulation coating layer.

3. The battery module according to claim 2 , wherein an injection hole is formed on the lower surface of the frame and the lower surface of the insulation coating layer, and the thermally conductive resin is injected through the injection hole.

4. The battery module according to claim 1 , further comprising an insulation coating protective layer covering the insulation coating layer.

5. The battery module according to claim 1 , wherein the upper surface and the lower surface of the insulation coating layer are thicker than the left surface and the right surface of the insulation coating layer.

6. The battery module according to claim 1 , wherein the insulation coating layer is formed by coating of an epoxy, a polyester, or a powder.

7. The battery module according to claim 1 , wherein the insulation coating layer is coated in a thickness of 50 to 300 micrometers.

8. The battery module according to claim 1 , further comprising an end plate for covering a front surface and a rear surface of the battery cell stack.

9. The battery module according to claim 1 , further comprising an upper plate covering an upper surface of the battery cell stack,
wherein the upper surface of the insulation coating layer is formed between the frame and the upper plate.

10. A battery pack comprising the battery module as set forth in claim 1 .

11. The battery module according to claim 1 , wherein the plurality of battery cells are stacked in a first direction, and
wherein the left surface and the right surface of the frame are spaced from each other in the first direction and the lower surface of the frame extends between the left surface and the right surface of the frame.

12. The battery module according to claim 1 , wherein the insulation coating layer forms a continuous layer covering the upper surface, the lower surface, the left surface and the right surface of the frame.

13. The battery module according to claim 1 , further comprising bus bar frame on a front surface and a rear surfaces of the battery cell stack.

14. The battery module according to claim 13 , further comprising an end plate for covering the front surface and the rear surface of the battery cell stack.

Assignees

• Lg Energy Solution Ltd

Inventors

• Park Subin
• Lee Youngho
• Kim Soo Youl
• Yoon Han Ki

Classifications

• H01M50/211

  adapted for pouch cells · CPC title

• H01M50/24 Primary

  adapted for protecting batteries from their environment, e.g. from corrosion (thermal insulation H01M10/658) · CPC title

• H01M10/653

  characterised by electrically insulating or thermally conductive materials · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M50/20

  Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders (structural combination of accumulators with charging apparatus H01M10/46) · CPC title