# US 2023/0057066 A1 · Battery Module > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0057066 A1 - Document ID: US20230057066A1 - Status: Published application - Kind: A1 - Application number: 17/890,101 - Filed: 2022-08-17 - Published: 2023-02-23 - Earliest claimed: 2021-08-18 - Assignees: SK On Co., Ltd. - Applicants: SK On Co Ltd. - Inventors: Ho Sang Jang; Ji Eun Kang; Hae Ryong Jeon; Jung Hwan Park - Web page: https://patentgrep.com/patent/US20230057066A1 ## CPC - H01M 50/507: comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules - H01M 10/4257: {Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries} - H01M 10/482: {for several batteries or cells simultaneously or sequentially} - H01M 50/519: comprising printed circuit boards [PCB] - H01M 2010/4271: {Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing} - 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 Provided is a battery module. The battery module includes a module case; first and second battery groups disposed inside the module case to be spaced apart from each other, each of the first and second battery groups including a plurality of battery cells; a first bus bar assembly disposed on a first side of the first battery group, the first bus bar assembly including a first bus bar electrically connecting the plurality of battery cells of the first battery group; a second bus bar assembly disposed on a first side of the second battery group, the second bus bar assembly including a second bus bar electrically connecting the plurality of battery cells of the second battery group; and a sensing unit electrically connected to both the first bus bar and the second bus bar and configured to measure states of the plurality of battery cells. ## Claims ### Claim 1 A battery module comprising: a module case; first and second battery groups disposed inside the module case to be spaced apart from each other, each of the first and second battery groups including a plurality of battery cells; a first bus bar assembly disposed on a first side of the first battery group, the first bus bar assembly including a first bus bar configured to electrically connect the plurality of battery cells of the first battery group; a second bus bar assembly disposed on a first side of the second battery group, the second bus bar assembly including a second bus bar configured to electrically connect the plurality of battery cells of the second battery group; and a sensing unit electrically connected to both the first bus bar and the second bus bar, the sensing unit sensing states of the plurality of battery cells. ### Claim 2 (depends on 1) The battery module of claim 1, wherein the first bus bar assembly further includes a first bus bar plate coupled to the first bus bar, wherein the second bus bar assembly further includes a second bus bar plate coupled to the second bus bar, and wherein at least one of the first bus bar plate and the second bus bar plate includes a mounting portion on which the sensing unit is disposed. ### Claim 3 (depends on 2) The battery module of claim 2, wherein the mounting portion includes: a first mounting portion formed on the first bus bar plate; and a second mounting portion formed on the second bus bar plate, wherein a part of the sensing unit is disposed on the first mounting portion, and another part of the sensing unit is disposed on the second mounting portion. ### Claim 4 (depends on 3) The battery module of claim 3, wherein the part of the sensing unit is symmetrical with the another part of the sensing unit. ### Claim 5 (depends on 2) The battery module of claim 2, wherein the sensing unit includes: a circuit board disposed on the mounting portion; and a plurality of connection units extended from the circuit board and electrically connected to the first bus bar and the second bus bar. ### Claim 6 (depends on 2) The battery module of claim 2, wherein the module case includes: a center frame configured to partition the first battery group and the second battery group; a front frame disposed in a front of the center frame; and a rear frame disposed in a rear of the center frame. ### Claim 7 (depends on 6) The battery module of claim 6, wherein the sensing unit includes: a circuit board disposed on the mounting portion; and a connector coupled to the circuit board and facing an exposure hole formed in the front frame. ### Claim 8 (depends on 6) The battery module of claim 6, wherein the center frame includes: a partition portion disposed between the first battery group and the second battery group; an upper frame connected to an upper edge of the partition portion; and a lower frame connected to a lower edge of the partition portion. ### Claim 9 (depends on 8) The battery module of claim 8, wherein the sensing unit is disposed between the upper frame and the lower frame. ### Claim 10 (depends on 8) The battery module of claim 8, further comprising: a third bus bar assembly disposed on a second side of the first battery group, the third bus bar assembly including a third bus bar configured to electrically connect the plurality of battery cells of the first battery group; a fourth bus bar assembly disposed on a second side of the second battery group, the fourth bus bar assembly including a fourth bus bar configured to electrically connect the plurality of battery cells of the second battery group; an auxiliary sensing unit electrically connected to both the third bus bar and the fourth bus bar, the auxiliary sensing unit configured to sense the states of the plurality of battery cells; and a connection line passing between the partition portion and at least one of the first and second battery groups, the connection line configured to electrically connect the sensing unit to the auxiliary sensing unit. ### Claim 11 (depends on 10) The battery module of claim 10, wherein at least one of the first and second bus bar plates includes a through hole through which the connection line passes. ### Claim 12 (depends on 1) The battery module of claim 1, wherein the module case includes a partition portion disposed between the first battery group and the second battery group, and wherein each of the plurality of battery cells faces the partition portion and is connected to the partition portion. ### Claim 13 (depends on 12) The battery module of claim 12, further comprising a heat transfer member disposed between the partition portion and the first battery group and disposed between the partition portion and the second battery group. ### Claim 14 (depends on 12) The battery module of claim 12, wherein a perimeter of each of the plurality of battery cells includes: sealing portions disposed at three edges of the perimeter, wherein both opposite exterior materials of the sealing portions contact each other; and a non-sealing portion disposed at one remaining edge of the perimeter and formed of a single exterior material, wherein the non-sealing portion faces the partition portion and is connected to the partition portion. ### Claim 15 (depends on 14) The battery module of claim 14, further comprising a heat transfer member disposed between the partition portion and the non-sealing portion. ### Claim 16 (depends on 14) The battery module of claim 14, wherein the partition portion is a heat exchanger through which a refrigerant flows, and the partition portion absorbs heat generated in the plurality of battery cells.