公开(公告)号：US12142783B2

公开(公告)日：2024-11-12

申请号：US17266690

申请日：2019-07-26

Applicant: SANYO Electric Co., Ltd.

Inventor： Nobuo Iwatsuki ,  Rui Ma ,  Tsubasa Michikami ,  Eiji Kawasaki

IPC: H01M50/30 ,  H01M50/209 ,  H01M50/507

Abstract: The battery module includes: battery stack configured to have a plurality of stacked batteries, batter stack including valve portion that releases a gas generated in each battery and output terminal; a plurality of bus bars configured to electrically connect output terminals of the plurality of batteries, the plurality of bus bars grouping the plurality of batteries into a plurality of battery units including at least two batteries, the plurality of bus bars connecting in parallel output terminals of batteries in each battery unit, the plurality of bus bars connecting in series battery units; and metal filter configured to be disposed between valve portion and output terminal in a first direction in which valve portion and output terminal are arranged and disposed, in stacking direction of batteries, within an extension range of battery belonging to a first terminal group to which a first bus bar of bus bars is fixed.

公开(公告)号：US20210050582A1

公开(公告)日：2021-02-18

申请号：US16964051

申请日：2018-11-15

Applicant: SANYO Electric Co., Ltd.

Inventor： Naotake Yoshida ,  Kazuhiro Harazuka ,  Nobuo Iwatsuki ,  Shinji Ota

IPC: H01M2/34 ,  H01M2/20 ,  H01M2/10

Abstract: There is provided a battery system including parallel-connected bus bars each connecting the plurality of prismatic battery cells in parallel, and a safety mechanism configured to be capable of interrupting a current path of prismatic battery cells connected in parallel by the parallel-connected bus bars, where the sealing plate of one of the prismatic battery cells convexly deforms due to a rise in an internal pressure of this prismatic battery cell when an abnormality occurs, the sealing plate that has convexly deformed comes into contact with the parallel-connected bus bars to form external short circuitry between the electrode terminals that are positive and negative of one prismatic battery cell connected in parallel to the prismatic battery cell with the abnormality, and external short circuitry activates the safety mechanism that interrupts a current flowing into the prismatic battery cell with the abnormality.

公开(公告)号：US11450923B2

公开(公告)日：2022-09-20

申请号：US16962090

申请日：2018-11-15

Applicant: SANYO Electric Co., Ltd.

Inventor： Naotake Yoshida ,  Kazuhiro Harazuka ,  Nobuo Iwatsuki ,  Shinji Ota

IPC: H01M50/502 ,  H01M50/572 ,  H01M50/446 ,  H01M50/20

Abstract: A short circuit current interruption method of a battery system including: stacking a plurality of prismatic battery cells and connecting the plurality of prismatic battery cells with a parallel connection bus bar in parallel to form a battery block, wherein a sealing plate of the prismatic battery cell is a plate material having flexibility that deforms when an internal pressure rises due to an internal short circuit, and when a rise in the internal pressure due to the internal short circuit of the prismatic battery cell causes deformation, the deformation of the sealing plate is detected, and when an amount of deformation exceeds a setting value, the short circuit current of the battery connected in parallel with the internally short circuited battery is interrupted.

公开(公告)号：US20200343508A1

公开(公告)日：2020-10-29

申请号：US16962090

申请日：2018-11-15

Applicant: SANYO Electric Co., Ltd.

Inventor： Naotake Yoshida ,  Kazuhiro Harazuka ,  Nobuo Iwatsuki ,  Shinji Ota

IPC: H01M2/16 ,  H01M2/34 ,  H01M2/20 ,  H01M2/10

Abstract: A short circuit current interruption method of a battery system including: stacking a plurality of prismatic battery cells and connecting the plurality of prismatic battery cells with a parallel connection bus bar in parallel to form a battery block, wherein a sealing plate of the prismatic battery cell is a plate material having flexibility that deforms when an internal pressure rises due to an internal short circuit, and when a rise in the internal pressure due to the internal short circuit of the prismatic battery cell causes deformation, the deformation of the sealing plate is detected, and when an amount of deformation exceeds a setting value, the short circuit current of the battery connected in parallel with the internally short circuited battery is interrupted.

公开(公告)号：US11515607B2

公开(公告)日：2022-11-29

申请号：US16964051

申请日：2018-11-15

Applicant: SANYO Electric Co., Ltd.

Inventor： Naotake Yoshida ,  Kazuhiro Harazuka ,  Nobuo Iwatsuki ,  Shinji Ota

IPC: H01M50/578 ,  H01M50/502 ,  H01M50/20

Abstract: There is provided a battery system including parallel-connected bus bars each connecting the plurality of prismatic battery cells in parallel, and a safety mechanism configured to be capable of interrupting a current path of prismatic battery cells connected in parallel by the parallel-connected bus bars, where the sealing plate of one of the prismatic battery cells convexly deforms due to a rise in an internal pressure of this prismatic battery cell when an abnormality occurs, the sealing plate that has convexly deformed comes into contact with the parallel-connected bus bars to form external short circuitry between the electrode terminals that are positive and negative of one prismatic battery cell connected in parallel to the prismatic battery cell with the abnormality, and external short circuitry activates the safety mechanism that interrupts a current flowing into the prismatic battery cell with the abnormality.

公开(公告)号：US10374454B2

公开(公告)日：2019-08-06

申请号：US15512386

申请日：2015-09-29

Applicant: SANYO Electric Co., Ltd.

Inventor： Nobuo Iwatsuki ,  Shingo Harada

IPC: G06F1/30 ,  H01M2/10 ,  H01M2/20 ,  H01M2/34 ,  H02J9/06 ,  H05K7/14

Abstract: A power supply device includes outer case, a battery block housed in this outer case and including at least one or more secondary batteries; a circuit board connected to the battery block; and power supply connector connected to output lead that outputs an output current from the battery block. Power supply connector is attached in a floating state to fixed surface of outer case. Furthermore, the circuit board is disposed in parallel to a first direction orthogonal to fixed surface between fixed surface and the battery block. Output lead is disposed in wiring space provided in a lower side or an upper side of the circuit board, and connected to the battery block.