	US 12,407,070 B2
	Battery pack
Ju Yong Park, Daejeon (KR); Seok Hwan Lee, Daejeon (KR); O Sung Kwon, Daejeon (KR); Myeong Hwan Ma, Daejeon (KR); Soo Jeong Jeong, Daejeon (KR); and Wook Her, Daejeon (KR)
Assigned to SK ON CO., LTD., Seoul (KR)
Filed by SK On Co., Ltd., Seoul (KR)
Filed on Mar. 22, 2022, as Appl. No. 17/700,878.
Claims priority of application No. 10-2021-0039796 (KR), filed on Mar. 26, 2021.
Prior Publication US 2022/0311101 A1, Sep. 29, 2022
Int. Cl. H01M 50/507 (2021.01); H01M 50/209 (2021.01)

CPC H01M 50/507 (2021.01) [H01M 50/209 (2021.01)]

18 Claims

1. A battery pack, comprising:

a pack case accommodating a plurality of battery modules;

a bus bar coupled to two battery modules among the plurality of battery modules and interconnecting terminals of the two battery modules; and

a bus bar cover accommodating the bus bar therein and coupled to the bus bar,

wherein the bus bar cover is formed as a unitary piece and configured to surround the bus bar and entirely cover an upper surface and side surfaces of the bus bar,

wherein the pack case includes a first reinforcing frame disposed to oppose a terminal surface, which is at least one of side surfaces of the battery module on which a terminal is disposed,

wherein the first reinforcing frame is disposed between the plurality of battery modules,

wherein the bus bar cover includes an accommodation portion including an accommodation space for accommodating the bus bar and an extension portion extending away from the accommodation portion to cover the side surfaces of the bus bar,

wherein the accommodation space includes an opening at a lower side thereof, and the bus bar cover is disposed over the bus bar such that the bus bar is accommodated inside the accommodation space through the opening,

wherein the extension portion includes a first extension portion disposed to oppose the terminal surface, and

wherein the first extension portion is disposed between the first reinforcing frame and the terminal surface.

11. A battery pack, comprising:

at least two battery modules;

a pack case accommodating the at least two battery modules;

a bus bar electrically connecting the at least two battery modules to each other;

module covers coupled to the at least two battery modules, respectively,

wherein each of the module covers accommodates a terminal surface, which is at least one side surfaces of the battery module on which a terminal is disposed therein, and is coupled to the battery module,

wherein the pack case includes a first reinforcing frame disposed to oppose a terminal surface,

wherein a portion of the module cover is disposed between the first reinforcing frame and the terminal surface,

further comprising a bus bar cover accommodating the bus bar therein and coupled to the bus bar,

wherein the pack case includes a second reinforcing frame disposed between the two battery modules, and

wherein the extension portion includes a frame insertion portion into which the second reinforcing frame is inserted.

13. A battery pack, comprising:

a pack case accommodating a plurality of battery modules;

a bus bar coupled to two battery modules among the plurality of battery modules and interconnecting terminals of the two battery modules; and

a bus bar cover accommodating the bus bar therein and coupled to the bus bar,

wherein the bus bar cover is configured to prevent flames or conductive particles in one battery module from spreading to an adjacent battery module,

wherein the pack case includes a first reinforcing frame disposed to oppose a terminal surface, which is at least one of side surfaces of the battery module on which a terminal is disposed and a second reinforcing frame disposed between the two battery modules of the plurality of battery modules,

wherein the extension portion of the bus bar cover is disposed between the first reinforcing frame and the terminal surface,

wherein the extension portion includes a frame insertion portion into which the second reinforcing frame is inserted.