Battery pack including cover structure, electronic device and vehicle

Patent metadata

Field	Value
Publication number	US-12095105-B2
Application number	US-202017278204-A
Country	US
Kind code	B2
Filing date	Mar 27, 2020
Priority date	Jun 24, 2019
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

A battery pack has reduced manufacturing cost, improved heat dissipation efficiency, and enhanced product stability. The battery pack includes a cover structure including a first cover frame having a plate shape with both front and rear ends bent leftward to form an inner space and a second cover frame having a portion coupled to the first cover frame and having a plate shape with both front and rear ends bent rightward to form an inner space; a first battery module having a plurality of battery cells; and a second battery module having a plurality of battery cells.

First claim

What is claimed is:

1. A battery pack, comprising:
a cover structure including:
a first cover frame having a first body portion with a first plate shape, and first bent portions bent leftward at both front and rear ends of the first body portion to form an inner space of the first cover frame, and
a second cover frame having a second body portion coupled to the first body portion and having a second plate shape, and second bent portions bent rightward at both front and rear ends of the second body portion to form an inner space of the second cover frame;

a first battery module accommodated in the inner space of the first cover frame and having a plurality of battery cells;
a second battery module accommodated in the inner space of the second cover frame and having a plurality of battery cells,
wherein the first body portion extends in a vertical direction and a front-to-rear direction, and the first body portion is configured to cover a right side of the first battery module,
wherein the first bent portions are configured to cover front and rear outer sides of the first battery module,
wherein the second body portion extends in the vertical direction and the front-to-rear direction, and the second body portion is configured to cover a left side of the second battery module,
wherein the second bent portions are configured to cover front and rear outer sides of the second battery module,
wherein the first bent portions of the first cover frame includes:
a first open part opened such that an electric bus bar configured to electrically connect the first battery module to electrical components is exposed to the outside; and
a first opening opened such that a part of a module bus bar configured to electrically connect the first battery module and the second battery module is exposed to the outside, and

wherein the second bent portions of the second cover frame includes:
a second open part opened such that an electric bus bar configured to electrically connect the second battery module to electrical components is exposed to the outside; and
a second opening opened such that a part of the module bus bar configured to electrically connect the first battery module and the second battery module is exposed to the outside.

2. The battery pack according to claim 1 , further comprising electrical components configured to detect and measure current of the first battery module and the second battery module or to control a flow of the current, the electrical components being mounted to outer sides of the first bent portion and the second bent portion.

3. The battery pack according to claim 1 , wherein the cover structure includes a reinforcing member coupled to an outer side of each of the first bent portion and the second bent portion.

4. The battery pack according to claim 1 , wherein each of the first battery module and the second battery module further includes:
a module housing having a plurality of hollows therein such that the plurality of battery cells are accommodated therein; and
a connection plate including a connection portion having a third plate shape with relatively wider upper and lower surfaces than side surfaces, located at an upper or lower portion thereof at which electrode terminals of the plurality of battery cells are disposed, and having a plurality of connection terminals to be in electric contact and connection with the electrode terminals of the battery cells, and an extending portion configured to protrusively extend from both left and right ends of the connection portion so that a part of the extending portion is bent upward or downward from the connection portion and an end of the extending portion is in contact and connection with a portion of another connection plate.

5. The battery pack according to claim 4 , wherein the connection plate has a first connection plate and a second connection plate,
wherein the extending portion of the second connection plate is in electrical contact with the extending portion of the first connection plate, and
wherein the extending portion of each of the first connection plate and the second connection plate has an expanding structure diagonally extending in a front or rear direction.

6. The battery pack according to claim 4 , wherein each of the first cover frame and the second cover frame has a ridged structure configured to face a portion of the module housing.

7. The battery pack according to claim 4 , wherein the cover structure further includes:
an upper plate configured to cover upper portions of the first cover frame and the second cover frame; and
a lower plate configured to support lower portions of the first cover frame and the second cover frame upward,
the module housing has a fixing tube perforated vertically from an upper portion to a lower portion thereof, and
the upper plate and the lower plate include a fixing member having a protrusively extending shape so as to be partially inserted into the fixing tube of the module housing.

8. The battery pack according to claim 2 , wherein each of the first battery module and the second battery module further includes at least one thermal conductive member at an upper portion thereof, at a lower portion thereof, or at both upper and lower portions thereof,
wherein a barrier is provided to protrusively extend upward from an upper surface of the module housing, and
wherein the thermal conductive member is disposed to be in contact with a portion of the barrier.

9. The battery pack according to claim 8 , wherein a rib extends in a front and rear direction from an end of the barrier of each of the first battery module and the second battery module, and
wherein the battery pack further comprises a fixture configured to be coupled to the rib of each of the first battery module and the second battery module.

10. An electronic device, comprising the battery pack according to claim 1 .

11. A vehicle, comprising the battery pack according to claim 1 .

12. A battery pack, comprising:
a cover structure including:
a first cover frame having a first body portion of a first plate shape and first bent portions bent leftward at both front and rear ends of the first body portion to form a first inner space, and
a second cover frame having a second body portion of a second plate shape coupled to the first portion, and having second bent portions bent rightward at both front and rear ends of the second body portion to form a second inner space;

a first battery module accommodated in the first inner space and having a plurality of battery cells; and
a second battery module accommodated in the second inner space and having a plurality of battery cells,
wherein each of the first battery module and the second battery module further includes:
a module housing having a plurality of hollows therein such that the plurality of battery cells are accommodated therein; and
a connection plate including a connection portion having a third plate shape with relatively wider upper and lower surfaces than side surfaces, located at an upper or lower portion thereof at which electrode terminals of the plurality of battery cells are disposed, and having a plurality of connection terminals to be in electric contact and connection with the electrode terminals of the battery cells, and an extending portion configured to protrusively extend from both left and right ends of the connection portion so that a part of the extending portion is bent upward or downward from the connection portion and an end of the extending portion is in contact and connection with a portion of another connection plate.

13. The battery pack according to claim 12 , wherein the

Assignees

• Lg Chemical Ltd
• Lg Energy Solution Ltd

Inventors

• Hur Jae-Yong
• Yang Jin-Oh
• Lee Kwang-Bae
• Son Young-Su
• Yang Kun-Joo

Classifications

• H01M2220/20

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

• H01M10/482

  for several batteries or cells simultaneously or sequentially · CPC title

• H01M50/271

  Lids or covers for the racks or secondary casings · CPC title

• H01M50/258

  Modular batteries; Casings provided with means for assembling · CPC title

• H01M50/572

  Means for preventing undesired use or discharge · CPC title