Abstract: A travelling vehicle includes a body including a small marker and a large marker, an imager, a pattern recognizer, and a state determiner. The large marker includes a display pattern including a first region, a second region with a lower reflectance than a reflectance of the first region, and a region where the small marker is located. The small marker has a display pattern including a third region with a lower reflectance than the reflectance of the first region and a fourth region with a lower reflectance than the reflectance of the third region and a lower reflectance than the reflectance of the second region.

Abstract: An overhead transport vehicle includes: a holding unit that is provided to be liftable and lowerable and configured to hold an article; a three-dimensional ranging sensor that has a detection range to include surroundings of a lower space formed directly below the article held by the holding unit; and a control device that is configured to determine presence or absence of an obstacle based on a detection result of the three-dimensional ranging sensor.

Abstract: An insulating plate for a secondary battery includes a wound electrode group, an electrolyte, a cylindrical battery case that houses the electrode group and the electrolyte, and a sealing body that seals an opening of the battery case and includes a discharge valve. The insulating plate is disposed between the electrode group and the sealing body and has a disk shape with a thickness T of 0.1 mm or more. The insulating plate has a first hole formed centrally therein and at least one second hole formed around the first hole so as to extend along the outer periphery of the disk shape. The ratio (=T/D) of the thickness T to a diameter D of the insulating plate is 0.016 or less, and the insulating plate has an opening ratio of 36% or less.

Abstract: A control device includes a diagnosis unit configured to diagnose a deterioration state of a secondary battery. The diagnosis unit includes: a resistance calculator configured to calculate a direct current resistance and a reaction resistance of impedance components based on an impedance measurement result of the secondary battery; an index value calculator configured to calculate an index value related to the direct current resistance and the reaction resistance; and a deterioration determination unit configured to compare the index value with a determination threshold based on an impedance characteristic at the time of normal deterioration of the secondary battery so as to determine whether a specific deterioration occurs due to charge and discharge of the secondary battery.

Abstract: A secondary battery system includes a secondary battery having an electrode body impregnated with an electrolytic solution containing metal ions. The secondary battery system measures an impedance of the secondary battery. The secondary battery system detects high-rate deterioration caused by uneven concentration of the metal ions in the electrolytic solution impregnated into the electrode body.

Abstract: A battery diagnostic system includes a superimposed current applying unit, a current value acquiring unit, a voltage value acquiring unit, an impedance calculating unit, and a diagnostic unit. The superimposed current applying unit configured to apply a superimposed current formed by superimposing a plurality of frequency components to a battery. The current value acquiring unit acquires the current value of the superimposed current applied to the battery. The voltage value acquiring unit acquires a battery voltage of the battery to which the superimposed current is applied. The impedance calculating unit calculates impedance for each of a plurality of frequency components using discrete Fourier transform from the superimposed current and the battery voltage. The diagnostic unit diagnoses the battery based on the impedance.

Abstract: An insulating plate for a secondary battery includes a wound electrode group, an electrolyte, a cylindrical battery case that houses the electrode group and the electrolyte, and a sealing body that seals an opening of the battery case and includes a discharge valve. The insulating plate is disposed between the electrode group and the sealing body and has a disk shape with a thickness T of 0.1 mm or more. The insulating plate has a first hole formed centrally therein and at least one second hole formed around the first hole so as to extend along the outer periphery of the disk shape. The ratio (=T/D) of the thickness T to a diameter D of the insulating plate is 0.016 or less, and the insulating plate has an opening ratio of 36% or less.

Abstract: In a battery measurement apparatus, a signal control unit, provided on a first electrical path connecting electrodes of a storage battery, causes the storage battery to output a predetermined alternating-current signal or inputs a predetermined alternating-current signal to the storage battery. A response signal input unit, provided on a second electrical path connecting the electrodes, inputs a response signal of the storage battery in response to the alternating-current signal through the second electrical path. Based on the response signal, a calculating unit calculates information related to a complex impedance of the storage battery. A magnetic flux passage area, surrounded by the storage battery and the second electrical path, is formed. A size of the magnetic flux passage area is set such that an error between an actual complex impedance of the storage battery and a complex impedance calculated by the calculating unit is within a range of ±1 m?.

Abstract: An insulating plate for a secondary battery includes a wound electrode group, an electrolyte, a cylindrical battery case that houses the electrode group and the electrolyte, and a sealing body that seals an opening of the battery case and includes a discharge valve. The insulating plate is disposed between the electrode group and the sealing body and has a disk shape with a thickness T of 0.1 mm or more. The insulating plate has a first hole formed centrally therein and at least one second hole formed around the first hole so as to extend along the outer periphery of the disk shape. The ratio (=T/D) of the thickness T to a diameter D of the insulating plate is 0.016 or less, and the insulating plate has an opening ratio of 36% or less.

Abstract: A nonaqueous electrolyte secondary battery according to an embodiment of the present disclosure includes: a wound electrode assembly (14) formed by spirally winding, via a separator (13), a positive electrode (11) and a negative electrode (12) in which a negative electrode mixture layer is formed on a negative electrode core, where: the negative electrode (12) includes a non-opposing portion (12a) that is wound 1.25 turns or more from an inner edge in a winding direction of the wound electrode assembly (14) without facing the positive electrode via the separator (13); the non-opposing portion (12a) includes a negative electrode mixture layer-formed portion (12c) in which the negative electrode mixture layer is formed on at least either side continuously in an inward winding direction from an outer edge in the winding direction; and the negative electrode mixture layer-formed portion (12c) is wound 0.75 turns or more.

Abstract: A cylindrical battery (10) according to an exemplary embodiment includes a cylindrical battery case (15) including a bottomed cylindrical exterior casing (16) and a sealing unit (17) fitted to close an opening of the exterior casing (16). A bottom portion (16b) of the exterior casing (16) is provided with an exhaust valve (28), and the sealing unit (17) is provided with an exhaust valve (24). An outer peripheral surface of the battery case (15) has a higher emissivity in a first region extending from the axial center of the battery case (15) to the same side as the bottom portion (16b) than in a second region located on the same side as the sealing unit (17).

Abstract: A battery including an upper insulating plate disposed between a sealing body and an electrode group. The upper insulating plate has a lead hole through which a positive electrode lead penetrates and an opening portion provided at a side opposite to the lead hole with respect to a central axis O of the battery orthogonal to the sealing body. The positive electrode lead has a first curved section adjacent to the lead hole and a second curved section provided at a side opposite to the first curved section with respect to the central axis O. When a distance from the central axis O to a portion of the second curved section farthest from the central axis O is represented by L1, and when a distance from the central axis O to a part of the opening portion nearest to the central axis O is represented by L2, L2>L1 is satisfied.

Abstract: A nonaqueous electrolyte secondary battery according to an embodiment of the present disclosure includes: a wound electrode assembly (14) formed by spirally winding, via a separator (13), a positive electrode (11) and a negative electrode (12) in which a negative electrode mixture layer is formed on a negative electrode core, where: the negative electrode (12) includes a non-opposing portion (12a) that is wound 1.25 turns or more from an inner edge in a winding direction of the wound electrode assembly (14) without facing the positive electrode via the separator (13); the non-opposing portion (12a) includes a negative electrode mixture layer-formed portion (12c) in which the negative electrode mixture layer is formed on at least either side continuously in an inward winding direction from an outer edge in the winding direction; and the negative electrode mixture layer-formed portion (12c) is wound 0.75 turns or more.

Abstract: An insulating plate for a secondary battery includes a wound electrode group, an electrolyte, a cylindrical battery case that houses the electrode group and the electrolyte, and a sealing body that seals an opening of the battery case and includes a discharge valve. The insulating plate is disposed between the electrode group and the sealing body and has a disk shape with a thickness T of 0.1 mm or more. The insulating plate has a first hole formed centrally therein and at least one second hole formed around the first hole so as to extend along the outer periphery of the disk shape. The ratio (=T/D) of the thickness T to a diameter D of the insulating plate is 0.016 or less, and the insulating plate has an opening ratio of 36% or less.