Abstract: A sealed cell has a sealing body with a space-saving safety valve that has excellent safety. The sealing body includes a terminal cap and a safety valve. The terminal cap includes one or more gas releasing holes for releasing a gas from inside to outside of the cell. The gas releasing holes are provided in the external terminal. A safety valve includes a conductive contact portion projecting toward an inside of the sealed cell, a peripheral portion in a periphery of the conductive contact portion, and one or more break grooves formed radially in the peripheral portion. At least one of the gas releasing holes overlap with at least one of break grooves in planar view of the sealed cell.

Abstract: A sealed cell includes a sealing body that includes an iron-based terminal cap and an aluminum-based safety valve. The terminal cap includes an external terminal, a flange in a periphery of the external terminal, and a hole in the flange. The hole has a diameter smaller on an inner side than on an outer side of the sealed cell. The safety valve includes a conductive contact portion projecting toward an inside of the sealed cell, a peripheral portion in a periphery of the conductive contact portion, and a pin projection in the peripheral. The sealed cell has a riveted portion in which the pin projection and the hole of the terminal cap together are riveted by inserting the pin projection into the hole and crushing a tip of the pin projection. A diameter of the terminal cap is larger than a diameter of the safety valve.

Abstract: A motor vehicle has at least one vehicle seat (3) and a trim part (1) that extends in the vehicle transverse direction (FQ) behind the vehicle seat (3). A cross member (2) is arranged below and/or behind the trim part (1). The trim part (1) carries a protective element (11) on an end face (6) of the trim part (1) that faces the vehicle seat (3) to protect the trim part (1) from damage caused by contact with the vehicle seat (3).

Abstract: An optical waveguide sensor includes a substrate and an optical waveguide. The optical waveguide includes a core and a lateral clad. The core extends in a spiral shape above a surface of the substrate. The lateral clad is disposed in a same layer as the core above the surface of the substrate and is in contact with either side surfaces of the core. At least a part of a surface of the core located opposite from the substrate is a transmission surface from which light leaks and is absorbed by a detected object.

Abstract: A motor vehicle has at least one vehicle seat (3) and a trim part (1) that extends in the vehicle transverse direction (FQ) behind the vehicle seat (3). A cross member (2) is arranged below and/or behind the trim part (1). The trim part (1) carries a protective element (11) on an end face (6) of the trim part (1) that faces the vehicle seat (3) to protect the trim part (1) from damage caused by contact with the vehicle seat (3).

Abstract: An object of the present invention is to provide a sealed cell including a sealing body having a safety valve that is excellent in conductivity. The sealed cell is sealed by caulking a sealing body 10 around an opening of a bottomed cylindrical outer can 20. The sealing body 10 includes a terminal cap 5 made of an iron-based material and a safety valve 3 made of an aluminum-based material. The terminal cap 5 includes an external terminal 5a projecting toward an outside of the sealed cell, a flange 5b in a periphery of the external terminal, and a hole 5c in the flange. The hole 5c has a diameter smaller on an inner side than on an outer side of the sealed cell. The safety valve 3 includes a conductive contact portion 3a projecting toward an inside of the sealed cell, a peripheral portion 3b in a periphery of the conductive contact portion 3a, and a pin-like projection 3c in the peripheral portion 3b.

Abstract: An object of the present invention is to provide a sealed cell having a sealing body with a space-saving safety valve that has excellent safety. The sealed cell is sealed by caulking the sealing body around an opening of a bottomed cylindrical outer can. The sealing body includes a terminal cap and a safety valve. The terminal cap includes an external terminal projecting toward an outside of the sealed cell, a flange portion in a periphery of the external terminal, and one or more gas releasing holes for releasing a gas from inside to outside of the cell. The gas releasing holes is provided in the external terminal. And the safety valve includes a conductive contact portion projecting toward an inside of the sealed cell, a peripheral portion in a periphery of the conductive contact portion, and one or more break grooves formed radially in the peripheral portion, Moreover, at least one of the gas releasing holes overlap with at least one of break grooves in planar view of the sealed cell.

Abstract: A sealed battery according to the present invention includes a sealing body 18A having a terminal cap 19? made of an iron-based material and a safety valve 25 made of an aluminum-based material. In the sealing body 18A, at least one of the flange of the terminal cap 19? and the flange of the safety valve 25 has a portion defining a space 30. The flanges of the terminal cap and of the safety valve are welded at a position corresponding to the space with high-energy rays. It is thus possible to provide the sealed battery including the sealing body having a current interrupt function in which resistance between the terminal cap and the safety valve is kept low, thereby being suitable for large-current applications.

Abstract: A degradation judgment method, for a storage battery, according to the invention detects generation of a gas (hydrogen, oxygen, etc) after the start of charging of a lead-acid storage battery 10 and measures the electrical characteristics (voltage, current, resistance, etc) of the lead-acid storage battery upon generation of the gas and a gas concentration, a gas generation quantity and a gas generation speed. These measurement values are compared with the results of determination of the relation calculated in advance between the degradation condition and these various quantities and the degradation condition of the lead-acid storage battery is judged.

Abstract: A physical quantity sensor element includes a strain sensitive resistor and an electrically insulating material. The strain sensitive resistor has an electrical resistance value changeable in response to a change of a strain level generated by application of a stress. The electrically insulating material is bonded to the strain sensitive resistor, the electrically insulating material having an electrically insulating property. The strain sensitive resistor includes (a) a matrix including a glass and (b) electrically conductive particles that are dispersed in the glass. The glass is free of lead and includes bismuth.

Abstract: A non-aqueous electrolyte secondary cell superior in safety against overcharge and in high-temperature cycle characteristic is provided. The non-aqueous electrolyte secondary cell includes a positive electrode, a negative electrode, a non-aqueous electrolyte, and a pressure sensitive safety mechanism that is actuated upon increase in the cell internal pressure. The positive electrode contains lithium carbonate at 0.5 to 1.5 mass %. The non-aqueous electrolyte contains a cycloalkyl benzene compound and/or a compound having a benzene ring and a quaternary carbon adjacent to the benzene ring, the compound or compounds being contained at 0.5 to 2 mass % in total.

Abstract: A sealed battery according to the present invention includes a sealing body 18A having a terminal cap 19? made of an iron-based material and a safety valve 25 made of an aluminum-based material. In the sealing body 18A, at least one of the flange of the terminal cap 19? and the flange of the safety valve 25 has a portion defining a space 30. The flanges of the terminal cap and of the safety valve are welded at a position corresponding to the space with high-energy rays. It is thus possible to provide the sealed battery including the sealing body having a current interrupt function in which resistance between the terminal cap and the safety valve is kept low, thereby being suitable for large-current applications.

Abstract: A degradation judgment method, for a storage battery, according to the invention detects generation of a gas (hydrogen, oxygen, etc) after the start of charging of a lead-acid storage battery 10 and measures the electrical characteristics (voltage, current, resistance, etc) of the lead-acid storage battery upon generation of the gas and a gas concentration, a gas generation quantity and a gas generation speed. These measurement values are compared with the results of determination of the relation calculated in advance between the degradation condition and these various quantities and the degradation condition of the lead-acid storage battery is judged.

Abstract: A silicon substrate is immersed in potassium hydroxide solution. Then, a main surface of the silicon substrate, which is immersed in the potassium hydroxide solution, is anodized by applying an electrical potential to the silicon substrate while the silicon substrate is used as an anode, so that an oxide film is formed in the main surface of the silicon substrate. Then, a main surface side of the silicon substrate is etched in the potassium hydroxide solution.