The battery module includes: battery stack including a plurality of batteries that are stacked, each of the plurality of batteries having valve portion; duct plate configured to cover a surface of battery stack on which the plurality of valve portions are disposed, duct plate having gas discharge duct that is connected to valve portions of the respective batteries, and temporarily stores a blown-off gas; cover plate placed on duct plate; and flow path portion defined by duct plate and cover plate, flow path portion extending from gas discharge duct in a first direction that intersects with stacking direction and allowing leaking of the gas in gas discharge duct to an outside of battery module. Cover plate has opening through which a midst portion of flow path portion is communicable with the outside of the battery module.

Embodiments of energy storage caddies adapted to couple to a welding power supply are provided. The energy storage caddies may include an energy storage device, a charger, control circuitry, and power conversion circuitry. Certain control circuitry may be adapted to control the energy storage device to discharge to provide a direct current (DC) voltage output to the welding power supply when a weld load demand is detected, to monitor a charge level of the energy storage device, and to alert a user to an error when the charge level of the energy storage device falls below a predetermined limit.

An open cabin electric wheeled vehicle includes a large-capacity driving battery having a volume energy density higher than the volume energy density of a lead storage battery, the large-capacity driving battery being configured to supply electric power to a driving electric motor. The vehicle also includes a fuel-type electric power generation apparatus that generates electric power using a fuel. As seen from a leftward direction or a rightward direction, between the large-capacity driving battery and the fuel-type electric power generation apparatus, a recess overlaps with a passage region which allows people or baggage to pass through of an entrance and exit opening portion having no door, so that a bottom end of a front wall portion, a bottom end of a rear wall portion, and a bottom portion are located further downward than a top end of the large-capacity driving battery which has a volume energy density higher than the volume energy density of a lead storage battery, and a top end of the fuel-type electric power generation apparatus.

A power storage device includes an electricity storage element, a case, and a sealing member which includes an elastic member. The elastic member contains an elastic polymer and a hindered phenol compound. The hindered phenol compound having a phenol skeleton includes a first hindered group and a second hindered group. The first hindered group is bonded to a first substitution site of the phenol skeleton, and the second hindered group is bonded to a second substitution site of the phenol skeleton. Each of the first substitution site and second substitution site is adjacent to a substitution site of the phenol skeleton to which a phenolic hydroxy group is bonded. One of one or more tertiary carbon atoms in the first hindered group and one of one or more tertiary carbon atoms in the second hindered group are bonded to the first substitution site and the second substitution site, respectively.

An electrical energy power source comprises a casing made by micro-bonding an upper ceramic wafer and a lower ceramic wafer to the opposed surfaces of a ceramic ring. The upper and lower ceramic wafers have respective first and second conductive pathways extends therethrough. A first current collector supporting a first active material layer contacts the upper ceramic wafer and the first conductive pathway, and a second current collector supporting a second, opposite polarity active material layer contacts the lower ceramic wafer and the second conductive pathway. A separator resides between the first and second active materials, and an electrolyte filled into the casing through a fill port activates the active materials. The first and second conductive pathways serve as opposite polarity terminals for the power source.

An electricity storage module includes: a laminate including a plurality of bipolar electrodes, each bipolar electrode including an electrode plate, a positive electrode, and a negative electrode; a frame body holding an edge portion of the electrode plate and including an opening that communicates with internal spaces; and a pressure regulating valve connected to the opening. Each internal space is provided between the bipolar electrodes. Each internal space accommodates an electrolytic solution. An exhaust port and a communication space are provided in the pressure regulating valve. The exhaust port is provided for exhausting gas to an external space. The communication space communicates with the exhaust port. The communication space includes a space portion positioned below a lower end of the exhaust port.

A button cell includes a housing having a cell cup, the cell cup having a flat bottom area, a cell cup casing, and a bottom edge forming a transition between the flat bottom area and the cell cup casing, and a cell top, the cell top having a flat top area and a cell top casing. An electrode-separator assembly winding is disposed within the housing, the electrode-separator assembly winding including a multi-layer assembly that is wound in a spiral shape about an axis, the multi-layer assembly including a separator disposed between a positive electrode and a negative electrode, and a first output conductor. An insulator is disposed between an end face of the electrode-separator assembly winding and the first output conductor, wherein the first output conductor is welded to the first of the flat bottom area or the flat top area.

A system comprising a surgical instrument is disclosed. The surgical instrument includes a handle, a shaft, a plurality of magnets, a plurality of sensors configured to determine a distance away from one or more of the plurality of magnets, and a processor communicatively coupled to the plurality of sensors. The processor is configured to determine a three dimensional change in position of the shaft by computing a three dimensional change in position of the one or more magnets, using the change in the distances determined by the one or more plurality of sensors.

A power storage device includes a pair of holding plates, several ribs and thin-walled portions. The ribs includes first ribs inclined to an extending direction of a first edge and an extending direction of a second edge and extending along straight lines connecting first engaging portions and second engaging portions, and second ribs extending along a facing direction in which the first edge and the second edge face each other. At least first ribs extend in different directions from each other and form an intersection where the at least two first ribs intersect with each other. At least one of the second ribs has opposite ends connected to the first ribs intersecting with each other.

A battery system includes a nickel hydride battery and an electronic control unit. The electronic control unit is configured to store data indicating a corresponding relationship between an elapsed time from start of use of the nickel hydride battery and a memory quantity. The data are data determined in a classified manner individually for each of conditions of use that are defined in such a manner as to include an open circuit voltage and a temperature. The electronic control unit is configured to sequentially calculate, with reference to the data, the memory quantity within a time when classification of the conditions of use does not change. The memory quantity is a quantity indicating an amount of change in voltage resulting from a memory effect. The electronic control unit is configured to estimate a current memory quantity of the nickel hydride battery by integrating the calculated memory quantity.