Abstract: Power supply device includes: a battery stack in which a plurality of battery cells each having an electrode terminal on an upper surface of an outer covering can are stacked; and a plurality of bus bars connecting electrode terminals of adjacent battery cells to each other. Bus bar includes window opened through which a part of electrode terminal of battery cell can be visually recognized in a state of being overlapped with electrode terminal in plan view. As a result, even when bus bar is overlapped on electrode terminal, electrode terminal on the lower side can be visually recognized through window, so that the connection position and the height can be confirmed, and the reliability of connection can be enhanced.

Abstract: The charging/discharging time of electric vehicle is shortened. The charging/discharging management system includes: a first acquisition controller configured to acquire vehicle information including vehicle capabilities regarding charging/discharging capabilities of multiple electric vehicles; a second acquisition controller configured to acquire device information including device capabilities regarding charging/discharging capabilities of multiple charging/discharging devices capable of charging/discharging the electric vehicles; and an assigning controller configured to compare the vehicle capabilities and assign the charging/discharging device having a high device capability among the charging/discharging devices for which device information has been acquired in the second acquisition controller, to the electric vehicle having a high vehicle capability.

Abstract: A service system includes a reservation section by which a reservation for a commodity or a service in a commercial facility can be made and specific information for an electric vehicle that visits the commercial facility can be set, a connection confirmation section that detects that an electric vehicle corresponding to the specific information set by the reservation section has been connected to a charge and discharge device of the commercial facility, and a notification section that notifies the commercial facility that connection of the electric vehicle corresponding to the specific information to the charge and discharge device has been detected by the connection confirmation section.

Abstract: Use of a charge-and-discharge spot can be promoted. A charge-and-discharge management system includes a setting controller that sets an incentive linked with a charge-and-discharge spot for each charge-and-discharge spot and a presentation controller that presents the incentive set for each charge-and-discharge spot to a user using an electric vehicle. The charge-and-discharge management system may further include an acquisition controller that connects the electric vehicle to a charge-and-discharge device installed in the charge-and-discharge spot and acquires connection spot information that is information of the charge-and-discharge spot that is a connection destination when charging and discharging is started, and a providing controller that provides an incentive set for the charge-and-discharge spot included in the connection spot information acquired by the acquisition controller when the charging and discharging of the electric vehicle is completed.

Abstract: Power supply device includes: a pair of end plates disposed on both ends in a stacking direction of battery stack constituted by stacking a plurality of secondary battery cells; and a plurality of fastening members fastening the pair of end plates together. Each of fastening members includes fastening main face having a flat plate shape and locking block fixed to a corner of fastening main face Each of end plates is formed with step that locks locking block while being fastened by fastening members, and has end plate screw hole opened near step. Each of fastening members has fastening side through hole opened so as to align with end plate screw hole while having each of end plates fastened, and has a fixing region fixing locking block to fastening main face disposed in a direction further away from each of end plates than fastening side through hole.

Abstract: A battery block is provided with: a plurality of cylindrical batteries of each of which the two ends are formed as positive and negative electrodes; and a lead plate which is connected to the electrodes of the cylindrical batteries. The cylindrical batteries are provided with battery cans having bottom plates provided with bottom surface electrodes and exhaust valves. The exhaust valves which are provided in the bottom plates open as a result of thin-walled lines breaking at a threshold pressure. The exhaust valves are provided inside the loop-shaped thin-walled lines provided in the bottom plates, said thin-walled lines having unconnected portions. The unconnected portions form hinge parts. Furthermore, the bottom surface electrodes provided in the bottom plates connect the lead plate to the hinge parts. The lead plate has cut-out portions provided in positions facing areas including the thin-walled lines.

Abstract: A battery block is provided with: a plurality of cylindrical batteries of each of which the two ends are formed as positive and negative electrodes; and a lead plate which is connected to the electrodes of the cylindrical batteries. The cylindrical batteries are provided with battery cans having exhaust valves provided to bottom plates. Bottom surface electrodes for connecting the lead plate are provided to the bottom plates of the battery cans. Furthermore, ring-shaped thin-walled lines which break at a threshold pressure are provided in the bottom plates. The insides of the thin-walled lines form sets of the exhaust valves. The lead plate connected to the bottom surface electrodes has, provided in positions facing the exhaust valves, through holes having an internal shape through which the exhaust valves which have separated from the bottom plates can pass.

Abstract: A plurality of battery cells is disposed at a fixed position in a battery holder. Each of the battery cells includes an end surface provided with a discharge port of a discharge valve as an exhaust side end surface, and an end surface opposite to the exhaust side end surface as a non-exhaust side end surface. A discharge duct is connected to the discharge port of the battery cell. Further, a stopper that prevents deformation of the non-exhaust side end surface due to an internal pressure is disposed at a position opposite to the non-exhaust side end surface of the battery cell.

Abstract: A battery block is provided with: a plurality of cylindrical batteries of each of which the two ends are formed as positive and negative electrodes; and a lead plate which is connected to the electrodes of the cylindrical batteries. The cylindrical batteries are provided with battery cans having bottom plates provided with bottom surface electrodes and exhaust valves. The exhaust valves which are provided in the bottom plates open as a result of thin-walled lines breaking at a threshold pressure. The exhaust valves are provided inside the loop-shaped thin-walled lines provided in the bottom plates, said thin-walled lines having unconnected portions. The unconnected portions form hinge parts. Furthermore, the bottom surface electrodes provided in the bottom plates connect the lead plate to the hinge parts. The lead plate has cut-out portions provided in positions facing areas including the thin-walled lines.