Sanyo Electric Co., Ltd.

Sanyo Electronics Components Co., Ltd.

Hitoshi Kihara

Masato Nishikawa

Seiichi Kiyama

Takahiro Nakamura

Hiroshi Hosokawa

Hideki Imai

Haruhiko Yamamoto

Shinji Matsudaira

Tatsuyuki Nakagawa

A laser welding device for manufacturing a prismatic batteryof the invention has a pair of jigsA,B for securing a prismatic battery outer can B, a gas supply section for supplying inert gas to welding points of a sealing cover Bfitted to the prismatic battery outer can B, and a laser unitfor irradiating laser beam. Each of the jigsA,B is provided with a slit-shaped blower outlet and the blower outlet is positioned below the welding points. The inert gas is supplied to the blower outlet from the gas supply section and is blown from the blower outlet to the welding points from below. The laser welding device for manufacturing a prismatic batterycan obtain a laser welding device that welds the sealing cover Bfitted to the prismatic battery outer can Bfast, preventing weld droops and allowing uniform welding.

Method for manufacturing prismatic battery, and laser welding jig and laser welding device for manufacturing the same

Fuel cell of this invention generates electricity by supplying fuel fluid to one of a pair of electrodes forming an MEA, supplying oxidation fluid to the other electrode, at least one of the fuel and oxidation fluids being gas, comprising a gas supply device transferring the gas along a flow pathdefined on a surface of the MEAand a drive circuit driving the gas supply device comprising a vibrating plateand a reflection wall on both sides of the flow path, and the drive circuit performs a normal operation control generating gas flow from inlet to outlet of the flow pathdue to sound pressure gradient generated in the flow pathby vibrating the vibrating plateand a foreign material elimination operation control eliminating foreign material in the flow pathby changing a vibration mode of the vibrating plate

Fuel cell

A nullification device of the invention comprises a nullifying signal generator 15 for producing a nullifying signal, and a controller 14 for measuring a predetermined period of time and on/off-controlling a mode change switch 16 provided between the signal generator 15 and a transmitting antenna 18. On the other hand, an activation device comprises a generator 23 for producing an activating signal for the nullification device. The activation device and the nullification device have connection terminals a, b and a', b', respectively, where the devices are in contact with each other, with the nullification device placed in a accommodating recess in the activation device. The controller 14 turns on the switch 16 in response to the activating signal, starts to measure time upon cessation of supply of the activating signal, and turns off the switch 16 upon lapse of the specified time period, whereby the nullification device for forcibly ceasing the generation of an alarm by an alarm unit is prevented from being used wrongfully.

Antitheft system

A photovoltaic device comprises a plurality of photoelectric converting regions formed on an insulating surface of a light transmissive substrate. Each photoelectric converting region includes a transparent film electrode, an amorphous semiconductor portion having a PIN junction parallel to the film surface and a back film electrode connected to the transparent film electrode of an adjacent region of the insulating surface. On a portion of the transparent film electrode, there is formed an insulating adiabatic layer. The adiabatic layer is formed at a position where an energy beam to be irradiated in the production process. Accordingly, when the energy beam is irradiated and the back electrode film is divided corresponding to each photoelectric converting region, thermal damage to the transparent film electrode due to the energy beam is prevented by the insulating adiabatic layer.

Growing community of inventors

Hirakata, Japan

Hitoshi Kihara