公开(公告)号：US20210175575A1

公开(公告)日：2021-06-10

申请号：US16954079

申请日：2018-12-17

Applicant: GS Yuasa International Ltd.

Inventor： Takashi AKIMOTO

IPC: H01M50/30 ,  H01M50/147

Abstract: A lead-acid battery (100) is provided with a lid (14). A communication chamber (520) is formed inside the lid (14). In the communication chamber (520), a first distance between an inner wall (432) and a vent hole (321) in a sidewall (506, 522) is shorter than a second distance between the inner wall (432) and a communication hole (328.330), and a tip (432A) of the inner wall (432) on the other side in the first direction is formed at a position on the other side in the first direction than the vent hole (321).

公开(公告)号：US20210083235A1

公开(公告)日：2021-03-18

申请号：US16954418

申请日：2018-12-17

Applicant: GS Yuasa International Ltd.

Inventor： Takashi AKIMOTO

IPC: H01M2/04 ,  H01M10/12 ,  H01M2/12 ,  H01M2/02

Abstract: A lead-acid battery (100) is provided with a lid (14). An external flow passage (530) communicating with a communication chamber (520) through a vent hole (321) and communicating with a discharge port (405) of a lid (14) is formed inside the lid (14). A compartment fence (452, 454) continuously extending over the entire width of the external flow passage (530) is formed in the external flow passage (530). A residual volume is larger than the volume of the communication chamber (520), the residual volume being obtained by subtracting, from the total volume of a plurality of external spaces (460, 462, 464) divided by the compartment fence (452, 454), the volume of the discharge-side external space (464) closest to the discharge port among the plurality of external spaces.

公开(公告)号：US20210083234A1

公开(公告)日：2021-03-18

申请号：US16954385

申请日：2018-12-17

Applicant: GS Yuasa International Ltd.

Inventor： Takashi AKIMOTO

IPC: H01M2/04 ,  H01M10/12 ,  H01M2/12 ,  H01M2/02

Abstract: A lead-acid battery (100) is provided with a lid (14). A communication chamber (520) is formed inside the lid (14). The communication chamber (520) is provided with an internal flow passage forming part (432, 522) forming an internal flow passage (Q) which communicates with a vent hole (321) and is located on the other side in a first direction than the vent hole (321). At least a part of the surface of the internal flow passage forming part (432, 522) has an uneven part (T).