公开(公告)号：US11081764B2

公开(公告)日：2021-08-03

申请号：US16331640

申请日：2017-11-08

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shinya Motokawa ,  Yoshito Kaga ,  Keisuke Shimizu

IPC: H01M50/581 ,  H01M50/531

Abstract: A battery module has a plurality of battery cells each including a cell case and a battery element contained in the cell case. The battery module includes a lead to electrically connect a terminal of each of the battery cells to a current collector and a heat shutoff mechanism to break electrical connection between the terminal and the current collector by heat from the cell case when the cell case reaches a predetermined temperature or higher.

公开(公告)号：US11380948B2

公开(公告)日：2022-07-05

申请号：US16320096

申请日：2017-07-06

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Keisuke Shimizu ,  Akira Takano ,  Shinya Motokawa ,  Yoshito Kaga ,  Takeshi Enomoto

IPC: H01M10/6554 ,  H01M10/613 ,  H01M10/647 ,  H01M10/6556 ,  H01M10/6568 ,  H01M10/6567 ,  H01M50/20

Abstract: A battery module includes a battery assembly and a thermally-conductive member to hold or support battery assembly. The battery assembly has a plurality of first batteries and a plurality of second batteries that are alternately stacked. The thermally-conductive member includes a first component and a second component that are each disposed along a stacking direction of the batteries. The first component has a heat resistance to the second batteries higher than to the first batteries. The second component has a heat resistance to the first batteries higher than to the second batteries.

公开(公告)号：US10608302B2

公开(公告)日：2020-03-31

申请号：US15739193

申请日：2016-10-14

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yoshito Kaga

IPC: H01M10/6554 ,  H01M2/10 ,  H01M2/20 ,  H01M10/613 ,  H01M10/625 ,  H01M10/643 ,  H01M10/6235

Abstract: A battery pack includes: a cell group including a plurality of cylindrical cells that are arranged in a manner of log pile in contact with each other; and a metal frame that extends along the periphery of the cell group and surrounds the cell group. The cells located at the corners of the cell group that has a substantially rectangular shape when viewed from an end surface side in the axial direction of the cells, are in contact with the metal frame.

公开(公告)号：US11942612B2

公开(公告)日：2024-03-26

申请号：US17254289

申请日：2019-05-08

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hiroshi Fujikawa ,  Shinichi Yuasa ,  Yoshito Kaga ,  Keisuke Naito

IPC: H01M10/44 ,  B60L50/60 ,  B60L53/00 ,  B60L58/12 ,  B60L58/26 ,  H01M10/48 ,  H01M10/613 ,  H01M10/625 ,  H01M10/633 ,  H01M10/643 ,  H01M10/647 ,  H01M10/6556 ,  H01M10/6568 ,  H02J7/00

CPC classification number: H01M10/443 ,  B60L50/60 ,  B60L53/00 ,  B60L58/12 ,  B60L58/26 ,  H01M10/48 ,  H01M10/486 ,  H01M10/613 ,  H01M10/625 ,  H01M10/633 ,  H01M10/643 ,  H01M10/647 ,  H01M10/6556 ,  H01M10/6568 ,  H02J7/0013 ,  H02J7/0047 ,  H01M2220/20

Abstract: In a battery system, a battery module includes a plurality of cells. A management unit manages charging-discharging of the battery module and a temperature inside the battery module. The management unit estimates a maximum temperature of an inside of a cell in the battery module based on a measured temperature in the battery module, and controls, during charging-discharging of the battery module, a charging-discharging current of the battery module and/or cooling of the battery module in such a way that the estimated maximum temperature does not exceed an upper limit temperature.

公开(公告)号：US11128012B2

公开(公告)日：2021-09-21

申请号：US16307260

申请日：2017-06-13

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yoshito Kaga ,  Takeshi Enomoto

IPC: H01M50/213 ,  H01M10/6563 ,  H01M10/6556 ,  H01M10/643 ,  H01M10/613 ,  H01M10/653 ,  H01M10/6557 ,  H01M50/20 ,  H01M50/502 ,  H01M50/538

Abstract: A battery module includes a plurality of battery blocks arranged in an X direction and thermal insulating boards that are each disposed between the battery blocks adjacent to each other in the X direction. The thermal insulating boards have a thermal insulating property. Each battery block includes a plurality of cylindrical batteries closely arranged in two or more rows in a staggered formation, with central axes of the cylindrical batteries being parallel to each other, and a block case entirely surrounding a periphery of a battery unit made up of the plurality of the cylindrical batteries so that the plurality of cylindrical batteries stays closely arranged.