Toyota Jidosha Kabushiki Kaisha

Tomoyoshi Kobayashi

Norio Yamagishi

Munetoshi Kuroyanagi

Takashi Usui

Takashi Mishima

Yuichiro Hama

Yuji Hidaka

Masato Ueda

A method for manufacturing a high pressure tank capable of uniformly heating a thermosetting resin in a short time is provided. A method for manufacturing a high-pressure tank including: a step (a) of preparing a tank intermediate product including a fiber-reinforced resin layer formed by winding a carbon fiber impregnated with a thermosetting resin around a liner including a cap attached thereto; and a step (b) of performing a process for thermosetting the fiber-reinforced resin layer of the tank intermediate product by induction-heating the fiber-reinforced resin layer using induction-heating means, in which: the induction-heating means includes first induction-heating means for induction-heating a trunk part of the tank intermediate product and second induction-heating means for induction-heating a dome part of the tank intermediate product; and a temperature of the trunk part of the tank intermediate product and a temperature of the dome part thereof are controlled independently.

Method for manufacturing high-pressure tank

A filament winding apparatus includes: N guide members arranged around a liner having an elongate shape such that the N guide members are centered around a center axis of the liner, the center axis extending in a longitudinal direction of the liner, each of the N guide members being configured to supply one bundle of fibers, and N being an integer equal to or larger than two, a drive unit configured to repeat, W times, a winding operation to helically wind N bundles of fibers supplied respectively from the N guide members around the liner at the same winding angle to form a reinforcing layer, the winding operation being an operation in which each of the N guide members travels, in a direction parallel to the center axis of the liner, from and back to a winding start position, and W being an integer equal to or larger than two.

Filament winding apparatus, filament winding design method, and manufacturing method of tank

A filament winding device includes a controller configured to control a rotating unit, a first moving unit, a second moving unit, and a swing unit based on command values of a rotation angle of a liner, and a first position, a second position, and a swing angle of a guide roller. The controller includes an associating unit configured to associate measured values of the first position, the second position, and the swing angle of the guide roller, corresponding to each rotation angle of the liner, with a measured value of the rotation angle of the liner, a difference calculating unit configured to calculate differences between the command values and the measured values, and a speed lowering unit configured to, when any one of the differences exceeds a predetermined threshold, lower a winding speed of the fiber bundle on the liner.

Filament winding device

A filament winding system includes a storage unit that stores in advance a reference shape of a winding object, and winding conditions including a winding position and a winding angle at which a fiber is wound around the winding object having the reference shape, a guide that is movable relative to the winding object, and feeds the fiber onto the winding object, a rotating device that rotates the winding object, such that the fiber fed from the guide is wound around the winding object, a measuring unit that measures a shape of the winding object, and a controller. When there is a difference between the reference shape stored in the storage unit, and the measured shape of the winding object, the controller corrects the winding conditions so as to reduce or eliminate the difference, and controls the guide according to the corrected conditions.

Filament winding system

A manufacturing method of a tank comprises winding a fiber on a liner by hoop winding. The winding comprises: forming an (N+1)-th layer such that a position closer to a center of the liner by a first predetermined distance along an axis line direction of the liner from an end in the axis line direction of an N-th layer is set to position of an end in the axis line direction of the (N+1)-th layer with respect to a direction perpendicular to the axis line direction; and winding the fiber on the N-th layer to provide one winding turn of the fiber, such that a pressing force of pressing the N-th layer in the axis line direction by the fiber is equal to or smaller than a total frictional force in an area in the N-th layer on an edge side in the axis line direction of a fiber winding position.

Manufacturing method of tank

A thermal curing device is used to manufacture a high-pressure gas tank by FW method. In the thermal curing device, a tank vessel configured to have a fiber layer formed on its outer surface by winding carbon fibers impregnated with a thermosetting resin is held to be rotatable about a virtual central axis of the tank vessel. In the thermal curing device, the tank vessel is heated by a heating unit during rotation, so as to thermally cure the thermosetting resin in the fiber layer and thereby form a fiber-reinforced resin layer. A bubble removal process for preventing formation of air bubble in the fiber-reinforced resin layer is performed at multiple different stages during such heating.

Manufacturing method and manufacturing apparatus of high-pressure gas tank

A fuel cell system including an ejector that merges a hydrogen gas to be supplied from a hydrogen tank to a fuel cell with a hydrogen-off gas exhausted from the fuel cell and supplies the resulting gases to the fuel cell. A hydrogen pump that pressurizes the hydrogen-off gas in a hydrogen circulation flow path and sends the hydrogen-off gas toward a hydrogen supply flow path and a control unit that controls, when the pressure of the hydrogen-off gas in the hydrogen circulation flow path is increased by the ejector and the hydrogen pump, the pressure of the hydrogen gas to be supplied to the ejector and the pressure increase of the hydrogen-off gas realized by the hydrogen pump so that the pressure increase of the hydrogen-off gas realized by the ejector is 0 or higher.

Fuel cell system

An object is to provide a fuel cell system having a simple structure, which is capable of supplying gas appropriately through an ejector in accordance with the load of a fuel cell. The fuel cell system () uses an ejector () disposed in a gas supply system () to combine a new gas to be supplied to the fuel cell () with an off-gas discharged from the fuel cell () and supply the fuel cell () with the resulting combined gas. The ejector () includes a nozzle () for ejecting the new gas and generating a negative pressure for aspirating the off-gas, and a flow rate control mechanism () for controlling the flow rate of the new gas which passes through the nozzle (). A first flow path () for leading the off-gas to the flow rate control mechanism () is provided in the gas supply system (), and the flow rate control mechanism () controls the flow rate of the new gas in accordance with the pressure of the off-gas led from the first flow path ().

Fuel cell system for supplying gas in accordance with load of the fuel cell

A valve in which durability of a sealing member made from an elastic material can be increased and sealing capability can be advantageously maintained over a wide range from a large differential pressure to a low differential pressure. A valve (), in which a valve disc () and a valve seat () are brought into close contact via a sealing member () composed of an elastic material and provided at the valve disc () or valve seat (), comprises a throttle section () defined by the shape of at least one of the valve disc () and valve seat (). The throttle section () narrows a flow passage formed between the valve disc () and valve seat () and is provided near the sealing member (). The flow passage narrowed by the throttle section () is so set that narrowing preferentially proceeds in the flow passage in close proximity to the sealing member () during the closing operation of the valve disc ().

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Toyota, Japan

Tomoyoshi Kobayashi