公开(公告)号：US20210313645A1

公开(公告)日：2021-10-07

申请号：US17266159

申请日：2019-07-26

申请人： SANYO Electric Co., Ltd.

发明人： KOJI FUJINAGA ,  KENGO ISHIBASHI ,  SHINICHI MITSUBORI

IPC分类号： H01M50/233 ,  H01M50/209

摘要： In order to achieve excellent flexural rigidity while employing a simple structure for end plate (3): a battery system includes: a battery stack (2) including a plurality of rectangular battery cells (1) that are stacked; end plate (3) placed at both ends of the battery stack; and a binding bar (4) that connects the end plates to fix the battery stack in a compressed state. End plate (3) includes plates (5) placed on both surfaces and plate-shaped block (6) laminated between plates (5); plates (5) include outer plate (5A) and inner plate (5B); plate-shaped block (6) includes dual-side blocks (7) placed on both sides so as to be separated from each other and intermediate block (8) placed in tapered groove (9) between dual-side blocks; the tapered groove (9) has a taper shape that gradually increases in width from an outside to an inside of the end plate (3). The intermediate block (8) is placed in facing surfaces (9A) of the tapered groove (9) in a slidable manner; the dual-side blocks (7) are fixed to the plates; and intermediate block (8) pressed by battery stack (2) is press-fitted into tapered groove (9) and end plate (3) applies tensile stress to outer plate (5A) and inner plate (5B) via dual-side blocks (7).

公开(公告)号：US20230135817A1

公开(公告)日：2023-05-04

申请号：US17906622

申请日：2020-12-28

申请人： SANYO Electric Co., Ltd.

发明人： NAO KOGAMI ,  KAZUHIRO HARAZUKA ,  KOJI FUJINAGA

IPC分类号： H01M50/242 ,  H01M50/264 ,  H01M50/293 ,  H01M50/209 ,  B60K1/04 ,  B60L58/18

摘要： A power supply device includes: battery block formed by stacking a plurality of battery cells in a thickness with separator interposed therebetween; a pair of end plates disposed on both end surfaces of battery block; and binding bar connected to the pair of end plates and configured to fix battery block in a pressurized state via end plates. Separator is formed by stacking elastomer layer and plastic foam layer having a larger amount of deformation with respect to a pressing force than elastomer layer.

公开(公告)号：US20230163402A1

公开(公告)日：2023-05-25

申请号：US17906623

申请日：2020-12-28

申请人： SANYO Electric Co., Ltd.

发明人： NAO KOGAMI ,  KAZUHIRO HARAZUKA ,  KOJI FUJINAGA

IPC分类号： H01M50/293 ,  H01M50/209 ,  H01M50/264 ,  H01M50/291 ,  B60K1/04 ,  B60L50/64

CPC分类号： H01M50/293 ,  H01M50/209 ,  H01M50/264 ,  H01M50/291 ,  B60K1/04 ,  B60L50/64

摘要： A power supply device includes: battery block formed by stacking a plurality of battery cells in a thickness with separator interposed therebetween; a pair of end plates disposed on both end surfaces of battery block; and binding bar that is coupled to the pair of end plates and fixes battery block in a pressurized state via end plates. Separator is an elastomer, and both surfaces of plate-shaped part are formed into uneven layers having different amounts of change in thickness with respect to a pressing force.

公开(公告)号：US20230139909A1

公开(公告)日：2023-05-04

申请号：US17906618

申请日：2020-11-25

申请人： SANYO Electric Co., Ltd.

发明人： NAO KOGAMI ,  KAZUHIRO HARAZUKA ,  KOJI FUJINAGA

IPC分类号： H01M50/489 ,  H01M50/417 ,  H01M50/244 ,  H01M10/44 ,  H01M50/505 ,  B60L1/04

摘要： A power supply device includes: battery block formed by stacking a plurality of battery cells in a thickness with separator interposed therebetween; a pair of end plates disposed on both end surfaces of battery block; and binding bar connected to the pair of end plates and configured to fix battery block in a pressurized state via end plates. Separator includes an elastic plate made of a plastic foam including open cells on a surface of the separator or as a whole.

公开(公告)号：US20230119207A1

公开(公告)日：2023-04-20

申请号：US17906351

申请日：2020-12-28

申请人： SANYO Electric Co., Ltd.

发明人： NAO KOGAMI ,  KAZUHIRO HARAZUKA ,  KOJI FUJINAGA

IPC分类号： H01M50/293 ,  H01M50/264 ,  H01M50/291 ,  B60L50/64

摘要： A power supply device includes: battery block formed by stacking a plurality of battery cells in a thickness with separator interposed therebetween; a pair of end plates disposed on both end surfaces of battery block; and binding bar that is coupled to the pair of end plates and fixes battery block in a pressurized state via end plates. Separator is made of elastomer having a comb-like shape in cross-sectional view, in which a plurality of rows of parallel ridges and a plurality of rows of parallel grooves are alternately disposed on a surface of plate-shaped part facing battery cell.

公开(公告)号：US20210210815A1

公开(公告)日：2021-07-08

申请号：US17059286

申请日：2019-05-17

申请人： SANYO Electric Co., Ltd.

发明人： KENGO ISHIBASHI ,  TAKAYUKI NOBUHIRA ,  KOJI FUJINAGA

IPC分类号： H01M50/204 ,  H01M50/258 ,  H01M10/04 ,  H01M50/262 ,  H01M50/543

摘要： In order to provide a battery module and the like capable of maintaining a fastened state of a plurality of battery cells with high reliability, battery module includes a plurality of battery cells each having electrode terminals, a pair of end plates that cover both side end surfaces of battery stack including the plurality of stacked battery cells, and a plurality of fastening members that fastens end plates to each other. End plate forms overlapping portion that covers at least a portion of each fastening member covering each side surface of battery cells located on the both side end surfaces of battery stack, and overlapping portion and the fastening members are welded and fixed. According to the above configuration, by welding in a state in which a side surface of fastening member is further covered with overlapping portion, there is an advantage that firm fixation can be achieved while preventing disengagement of fastening member.