# US 2017/0288183 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 2017/0288183 A1 - Document ID: US20170288183A1 - Status: Published application - Kind: A1 - Application number: 15/507,119 - Filed: 2015-08-10 - Published: 2017-10-05 - Earliest claimed: 2014-09-03 - Assignees: Kabushiki Kaisha Toyota Jidoshokki - Applicants: Kabushiki Kaisha Toyota Jidoshokki - Inventors: Takashi SAKAI; Takayuki KATO; Hiromi UEDA; Naoto MORISAKU - Web page: https://patentgrep.com/patent/US20170288183A1 ## CPC - H01M 50/209: adapted for prismatic or rectangular cells (H01M50/216 takes precedence) - H01M 50/507: comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules - H01M 50/51: Connection only in series - 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 has battery cells. The battery cells are arranged side by side while being separately held by battery holders. The battery cells are connected in series with bus bars. Each bus bar has a bent portion. Each battery holder includes a protruding wall that is provided between connection terminals adjacent to each other in the direction in which the battery cells are arranged. The protruding walls protrude further than the connection terminals in the direction in which the connection terminals protrude from the cases. ## Claims ### Claim 1 A battery module comprising: a plurality of battery cells that each include an electrode assembly, a case accommodating the electrode assembly, and a connection terminal protruding from the case, wherein the plurality of battery cells are arranged side by side such that connection terminals of different polarities are adjacent to each other; a plurality of bus bars that alternately connect connection terminals that are adjacent to each other in an arrangement direction in which the plurality of battery cells are arranged, thereby connecting the plurality of battery cells in series; a plurality of protruding walls each provided between bus bars that are adjacent to each other in the arrangement direction, wherein each protruding wall protrudes further than the connection terminals in a protruding direction in which the connection terminals protrude from the cases; a battery holder holding one of the plurality of battery cells, wherein the plurality of bus bars protrude in a direction intersecting the arrangement direction and each include a bent portion that is capable of being deformed to extend in the arrangement direction as the plurality of battery cells expand, and wherein the battery holder includes one of the plurality of protruding walls. ### Claim 2 (depends on 1) The battery module according to claim 1, wherein each bent portion protrudes in the protruding direction, and the plurality of protruding walls protrude further than the bent portions in the protruding direction. ### Claim 3 (depends on 1) The battery module according to claim 1, wherein a connecting wall is provided between each connection terminals connected by the bus bar, the connecting walls protrude further than connection terminals in the protruding direction, and each connecting wall is straddled by one of the bent portions. ### Claim 4 (depends on 2) The battery module according to claim 2, wherein a pair of partition walls is provided between each connection terminals connected by the bus bar, the pair of partition walls protrude further than the bent portions in the protruding direction, and each pair of the partition walls sandwiches one of the bent portions to define an installation position of the bus bar. ### Claim 5 (depends on 3) The battery module according to claim 3, wherein each bent portion remains separated from a corresponding one of the connecting walls even when the plurality of battery cells expand. ### Claim 6 (canceled) ### Claim 7 A battery module comprising: a plurality of battery cells that each include an electrode assembly, a case accommodating the electrode assembly, and a connection terminal protruding from the case, wherein the plurality of battery cells are arranged side by side such that connection terminals of different polarities are adjacent to each other; a plurality of bus bars that alternately connect connection terminals that are adjacent to each other in an arrangement direction in which the plurality of battery cells are arranged, thereby connecting the plurality of battery cells in series; a plurality of protruding walls each provided between bus bars that are adjacent to each other in the arrangement direction, wherein each protruding wall protrudes further than the connection terminals in a protruding direction in which the connection terminals protrude from the cases, and a battery holder holding one of the plurality of battery cells, wherein the plurality of bus bars protrude in a direction intersecting the arrangement direction and each include a bent portion that is capable of being deformed to extend in the arrangement direction as the plurality of battery cells expand, wherein each bent portion protrudes in the protruding direction, and the plurality of protruding walls protrude further than the bent portions in the protruding direction; wherein a pair of partition walls is provided between each connection terminals connected by the bus bar, the pair of partition walls protrude further than the bent portions in the protruding direction, and each pair of the partition walls sandwiches one of the bent portions to define an installation position of the bus bar, and wherein the battery holder includes the pair of partition walls. ### Claim 8 (depends on 7) The battery module according to claim 7, wherein a connecting wall is provided between each connection terminals connected by the bus bar, the connecting walls protrude further than connection terminals in the protruding direction, and each connecting wall is straddled by one of the bent portions. ### Claim 9 (depends on 7) The battery module according to claim 7, wherein each bent portion remains separated from a corresponding one of the connecting walls even when the plurality of battery cells expand. ### Claim 10 A battery module comprising: a plurality of battery cells that each include an electrode assembly, a case accommodating the electrode assembly, and a connection terminal protruding from the case, wherein the plurality of battery cells are arranged side by side such that connection terminals of different polarities are adjacent to each other; a plurality of bus bars that alternately connect connection terminals that are adjacent to each other in an arrangement direction in which the plurality of battery cells are arranged, thereby connecting the plurality of battery cells in series; and a plurality of protruding walls each provided between the plurality of bus bars that are adjacent to each other in the arrangement direction, wherein each protruding wall protrudes further than the connection terminals in a protruding direction in which the connection terminals protrude from the cases; and a battery holder holding one of the plurality of battery cells, wherein the plurality of bus bars protrude in a direction intersecting the arrangement direction and each include a bent portion that is capable of being deformed to extend in the arrangement direction as the plurality of battery cells expand, wherein a connecting wall is provided between each connection terminals connected by the bus bar, the connecting walls protrude further than connection terminals in the protruding direction, and each connecting wall is straddled by one of the bent portions, wherein each bent portion remains separated from the corresponding one of the connecting wails even when the plurality of battery cells expand, and wherein the battery holder includes the connecting walls. ### Claim 11 (depends on 10) The battery module according to claim 10, wherein each bent portion protrudes in the protruding direction, and the plurality of protruding walls protrude further than the bent portions in the protruding direction. ### Claim 12 (depends on 10) The battery module according to claim 10, wherein a pair of partition walls is provided between each connection terminals connected by the bus bar, the pair of partition walls protrude further than the bent portions in the protruding direction, and each pair of the partition walls sandwiches one of the bent portions to define an installation position of the bus bar.