Battery module

Patent metadata

Field	Value
Publication number	US-11848455-B2
Application number	US-201917058269-A
Country	US
Kind code	B2
Filing date	Dec 4, 2019
Priority date	Dec 6, 2018
Publication date	Dec 19, 2023
Grant date	Dec 19, 2023

Abstract

A battery module according to the present disclosure includes: a cell assembly that includes at least one battery cell; an upper plate that covers one side of the cell assembly, and includes a hinge pin adjacent at least one corner thereof; and a bus-bar frame that covers a neighboring side of the one side of the cell assembly, covered by the upper plate, and coupled to the upper plate by including a hinge coupling portion that is coupled with the hinge pin, wherein the hinge coupling portion comprises a hinge pin receiving portion where the hinge pin is received and a hinge pin cover portion that covers the hinge pin, and one of the hinge pin and the hinge coupling portion comprises a coupling protrusion portion, and the other comprises a coupling groove portion corresponding to the coupling protrusion portion.

First claim

The invention claimed is:

1. A battery module comprising:
a cell assembly that includes at least one battery cell;
an upper plate that covers one side of the cell assembly, and includes a hinge pin at at least one corner thereof; and
a bus-bar frame that covers a neighboring side of the one side of the cell assembly, covered by the upper plate, and that is coupled to the upper plate by including a hinge coupling portion that is coupled with the hinge pin,
wherein the hinge coupling portion comprises a hinge pin receiving portion where the hinge pin is received and a hinge pin cover portion that covers the hinge pin, and
one of the hinge pin and the hinge coupling portion comprises a coupling protrusion portion, and the other comprises a coupling groove portion corresponding to the coupling protrusion portion.

2. The battery module of claim 1 , wherein the hinge pin cover portion completely covers the hinge pin.

3. The battery module of claim 1 , wherein the coupling groove portion comprises a main coupling groove portion, and a preliminary coupling groove portion disposed a distance apart from the main coupling groove portion.

4. The battery module of claim 3 , wherein the hinge pin comprises the coupling protrusion portion, and the hinge coupling portion comprises the main coupling groove portion and the preliminary coupling groove portion.

5. The battery module of claim 4 , wherein the hinge coupling portion has a circular-shaped cross-section, and the distance between the main coupling groove portion and the preliminary coupling groove is less than ¼ of a circular arc of the circular-shaped cross-section.

6. The battery module of claim 3 , wherein the bus-bar frame is pivotably coupled to the upper frame by the hinge coupling portion.

7. The battery module of claim 6 , wherein pivoting of the bus-bar frame is limited by coupling between the coupling protrusion portion and the main coupling groove portion.

8. The battery module of claim 6 , wherein the bus-bar frame is perpendicularly coupled to the upper plate while the coupling protrusion portion and the main coupling groove portion are in a coupled state.

9. The battery module of claim 6 , wherein the cell assembly is mounted below the upper plate in a preliminary coupling state in which the coupling protrusion portion and the preliminary coupling groove portion are coupled, and the bus-bar frame is assembled to cover the neighboring side of the one side of the cell assembly by pivoting of the bus-bar frame.

10. The battery module of claim 1 , wherein the hinge pin receiving portion and the hinge pin cover portion are coupled by a snap fit structure.

11. The battery module of claim 1 , further comprising a flexible printed circuit board formed on a top surface of the upper plate,
wherein the flexible printed circuit board extends from one side of the upper plate adjacent to the hinge coupling portion to one side of the bus-bar frame passing one side adjacent to the hinge coupling portion.

12. The battery module of claim 3 , wherein the hinge coupling portion comprises the coupling protrusion portion, and the hinge pin comprises the main coupling groove portion and the preliminary coupling groove portion.

13. The battery module of claim 12 , wherein the hinge coupling portion has a circular-shaped cross-section, and a distance between the main coupling groove portion and the preliminary coupling groove is less than ¼ of a circular arc of the circular-shaped cross-section.

14. A battery pack comprising:
at least one battery module according to claim 1 ; and
a pack case that packages the at least one battery module.

15. A device comprising at least one battery pack of claim 14 .

Assignees

• Lg Chemical Ltd
• Lg Energy Solution Ltd

Inventors

• Park Jinwoo
• Kim Tae Geun

Classifications

• H01M50/204 Primary

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

• H01M10/425

  Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00) · CPC title

• H01M50/211

  adapted for pouch cells · CPC title

• H01M50/244

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