公开(公告)号：US10797293B2

公开(公告)日：2020-10-06

申请号：US15809428

申请日：2017-11-10

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masato Kamiya ,  Masaru Ishii ,  Takayuki Hojo ,  Tetsuya Kaneko

IPC: H01M2/26 ,  H01M10/0525 ,  H01M2/10 ,  H01M2/30 ,  H01M2/20

Abstract: A battery pack includes a plurality of unit cells, each including an electrode body having a structure in which a positive electrode and a negative electrode are stacked, and a busbar that electrically connects a positive electrode terminal to a negative electrode terminal between the unit cells. The unit cells are stacked adjacent to one another in the same direction as a direction in which the positive electrode and the negative electrode of the electrode body are stacked. The busbar electrically connects the unit cells disposed apart from each other among the unit cells excluding the unit cells disposed adjacent to each other.

公开(公告)号：US10725119B2

公开(公告)日：2020-07-28

申请号：US16197571

申请日：2018-11-21

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kensaku Miyazawa ,  Shinichi Hamasaki ,  Yuya Ishihara ,  Tetsuya Kaneko

IPC: H01M10/48 ,  H01G13/00 ,  G01R31/50 ,  G01R31/3842 ,  H01M10/44 ,  H01M10/42 ,  G01R31/385 ,  H02J7/00 ,  H01J7/00 ,  G01R31/388

Abstract: A method of evaluating a power storage device includes at least [a] to [f] below. [a] A power storage device is prepared. [b] A charge level of the power storage device is adjusted to produce a first potential difference between a positive electrode and a negative electrode. [c] The positive electrode or the negative electrode is selected as a reference electrode. [d] After the charge level is adjusted, an operation to insert a conductive rod-shaped member into a stack portion along a direction of stack of the positive electrode and the negative electrode is performed while a second potential difference between the reference electrode and the rod-shaped member is measured. [e] The rod-shaped member is stopped. [f] The power storage device is evaluated based on a state of the power storage device after the rod-shaped member is stopped.

公开(公告)号：US10530014B2

公开(公告)日：2020-01-07

申请号：US15794348

申请日：2017-10-26

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Takayuki Hojo ,  Masaru Ishii ,  Masato Kamiya ,  Tetsuya Kaneko

IPC: H01M10/058 ,  H01M2/02 ,  H01M10/04

Abstract: There is provided an assembled battery including a plurality of single cells and a plurality of bus bars connecting the plurality of single cells in series. The plurality of single cells is arranged such that a pair of flat side surfaces faces each other. The single cells each include a battery case, a positive electrode sheet, a negative electrode sheet, a positive electrode terminal, a negative electrode terminal, an electrical resistor disposed in a conductive path between the positive electrode sheet and the positive electrode terminal, and a pressure operative type current interruption mechanism disposed in a conductive path between the negative electrode sheet and the negative electrode terminal.