# US 12,603,381 B2 · Battery module and battery pack including the same

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- Number: US 12,603,381 B2
- Document ID: US12603381B2
- Status: Granted
- Kind: B2
- Application number: 17/779,282
- Filed: 2021-03-09
- Published: 2022-12-22
- Granted: 2026-04-14
- Earliest claimed: 2020-04-01
- Assignees: LG Energy Solution, Ltd.
- Applicants: LG Energy Solution, Ltd.
- Inventors: Jonghwa Choi; Junyeob Seong; Junkyu Park
- Web page: https://patentgrep.com/patent/US12603381B2

## CPC

- H01M 50/3425: {in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member}
- H01M 50/211: adapted for pouch cells
- H01M 50/244: Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
- H01M 50/249: specially adapted for aircraft or vehicles, e.g. cars or trains (constructional details of batteries specially adapted for electric vehicles B60L50/64)
- H01M 50/35: Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
- H01M 50/394: {Gas-pervious parts or elements}
- H01M 50/548: on opposite sides of the cell
- H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane
- Y02E 60/10: Energy storage using batteries
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A battery module includes: a battery cell stack in which a plurality of battery cells are stacked; and a module frame for housing the battery cell stack, wherein a vent is formed on the lower surface of the module frame, wherein the battery cell comprises: a cell main body; electrode leads formed to protrude from both ends of the cell main body; and a terrace part formed to extend from the cell case in a direction in which the electrode leads protrude, and wherein the vent is formed adjacent to a portion where the terrace part is located rather than the cell main body.

## Claims

### Claim 1

A battery module comprising:
a battery cell stack in which a plurality of battery cells are stacked; a module frame for housing the battery cell stack, the module frame having an upper surface and a lower surface;
a first end plate and a second end plate located on a front surface and a rear surface of the battery cell stack, respectively,
wherein the battery cell stack is supported on the lower surface,
wherein a vent is formed in the lower surface of the module frame,
wherein each battery cell of the plurality of battery cells comprises:
a cell main body;
electrode leads formed to protrude from opposite ends of the cell main body; and
a terrace part formed to extend from the cell main body in a direction in which the electrode leads protrude,
wherein the vent is formed adjacent to a portion where the terrace part is located, and
wherein the vent discharges gas in a direction of the end plate located farther from the vent.

### Claim 2 (depends on 1)

The battery module of claim 1, wherein:
the vent is formed at a position corresponding to a portion where the terrace part is located.

### Claim 3 (depends on 1)

The Battery module of claim 1, wherein:
the vent has a hole structure formed on the lower surface of the module frame.

### Claim 4 (depends on 3)

The battery module of claim 3, wherein:
the hole structure penetrates the lower surface of the module frame at an oblique angle.

### Claim 5 (depends on 4)

The battery module of claim 4, wherein:
the hole structure has an inclined direction having an outlet closer to an end plate that is located farther from the vent among the first end plate and the second end plate.

### Claim 6 (depends on 1)

The battery module of claim 1, wherein:
the vent comprises an inlet port formed on the lower surface of the module frame and facing the battery cell stack, an outlet port for discharging gas that has flowed in through the inlet port, and a connection part for connecting the inlet port and the outlet port, and
wherein the connection part overlaps a bottom wall of the module frame in a vertical direction.

### Claim 7 (depends on 6)

The battery module of claim 6, wherein:
the outlet port is perpendicular to the inlet port.

### Claim 8 (depends on 6)

The battery module of claim 6, wherein:
the connection part protrudes from the lower surface of the module frame.

### Claim 9

A battery module comprising:
a battery cell stack in which a plurality of battery cells are stacked;
a module frame for housing the battery cell stack; and
a pack frame, the module frame being within the pack frame; and
a first end plate and a second end plate located on a front surface and a rear surface of the battery cell stack, respectively
wherein a vent is formed on a lower surface of the module frame,
wherein each battery cell of the plurality of battery cells comprises:
a cell main body:
electrode leads formed to protrude from opposite ends of the cell main body; and
a terrace part formed to extend from the cell case in a direction in which the electrode leads protrude,
wherein the vent is formed adjacent to a portion where the terrace part is located,
wherein the first end plate and the second end plate comprise a module mounting part for fixing the battery module,
wherein a support member having a first end and a second end is inserted into the module mounting part,
wherein the second end is below the lower surface of the module frame, and
wherein the lower surface of the module frame is spaced above a bottom part of a pack frame by the support member.

### Claim 10 (depends on 9)

The battery module of claim 9, wherein:
the support member protrudes downwardly from the lower surface of the module frame.

### Claim 11 (depends on 1)

A battery pack comprising two or more of the battery modules of claim 1, wherein among the two or more battery modules, a first battery module and a second battery module have openings formed on surfaces facing each other.

### Claim 12 (depends on 11)

The battery pack of claim 11, wherein:
the vent of the first battery module is formed so as to discharge gas in a direction opposite to a direction in which the second battery module is located.

### Claim 13 (depends on 11)

The battery pack of claim 11, further comprising a pack frame for housing the two or more battery modules,
wherein the two or more battery modules are spaced above a bottom part of the pack frame.

### Claim 14 (depends on 1)

The battery module of claim 1, further comprising a pair of bus bar frames at a front and a rear of the battery cell stack, respectively; and
an upper plate on a top surface of the battery cell stack.

### Claim 15 (depends on 1)

The battery module of claim 1, wherein the vent comprises an inlet port formed in the lower surface of the module frame and facing the battery cell stack, and a connection part extending downwardly from the lower surface of the module frame.

### Claim 16 (depends on 1)

The battery module of claim 1, wherein a connector opening is formed in the end plate, the connector opening being closer to the upper surface than the lower surface.