Toyota Jidosha Kabushiki Kaisha

Akinori Eda

Hideki Teshima

Toru Sugiyama

Keisuke Uchida

Joji Yoshimura

Takayoshi Doi

A current interrupt mechanism includes a partition wall defining a second space that is independent from a first space, and the partition wall includes a current path portion serving as a current path of a sealed battery. The current interrupt mechanism interrupts the current path in response to an internal pressure of the second space that is higher than a predetermined pressure. One conductive path passes through the current path of the current interrupt mechanism, and is in contact with the second electrolyte solution enclosed in the second space. Another conductive path includes a potential application line that is wired to the second electrolyte solution enclosed in the second space.

Sealed battery

A laser build-up method according to an embodiment includes the processes of: forming an annular counter sunk groovein an edge of an opening of a port on a side of a combustion chamber; and irradiating a laser beamwhile a metallic powderis being supplied to the counter sunk grooveand successively forming a cladding layerfor a valve seat, in which: the cladding layeris formed while a seal gasis being sprayed onto a melt pool, the cladding layerincludes a starting end part, a part formed just after the starting end part is formed, an intermediate part, a part formed just before a terminating end part is formed, and a terminating end part, which are formed in this order.

Laser build-up method

A method of determining a quality of a cladding layer according to one aspect of the present invention is a method of determining a quality of a cladding layerformed by irradiating a laser beamwhile a metallic powderis being supplied, the method including: a process of capturing an image of a melt pooland an area around thereof while the cladding layeris being formed; a process of measuring the sizes and the number of ball-shaped metallic powder aggregates absorbed in the melt poolfrom the image that has been captured; and a process of determining the quality of the cladding layerbased on the sizes and the number that have been measured.

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Nagakute, Japan

Akinori Eda