Abstract: A battery unit includes a battery module having electrode sheets stacked along a first direction, and a cooling plate superposed on a surface of the battery module. Each electrode sheet has a coated portion having a surface on which an active substance exists, and an uncoated portion that is located adjacent to the coated portion, and has both surfaces on which the active substance does not exist. The cooling plate has a main plate opposed to the coated portion, and a sensor holder attached to an outer edge of the main plate. A boundary between the coated portion and uncoated portion of the electrode sheet and a boundary between the main plate and the sensor holder on an abutting surface of the cooling plate do not overlap with each other, when viewed along the first direction, in a section in which the boundaries extend in parallel with each other.

Abstract: A voltage detection unit includes a voltage detection terminal, a housing having an accommodating concave portion to accommodate the voltage detection terminal and a cover to be attached to the housing while covering the accommodating concave portion. The cover is locked to the housing at a temporary locking position at which the cover covers a part of the accommodating concave portion and at a final locking position at which the cover covers an entirety of the accommodating concave portion. The cover includes a main body portion including a locking portion, and a locking piece. The housing includes a locked portion to be locked to the locking portion, a locking hole to accommodate the locking piece and an extending portion formed by a part of an edge of the locking hole. The locking piece is accommodated in the locking hole when the cover is at the temporary locking position.

Abstract: A voltage detection unit includes: a voltage detection terminal having a first location configured to be conductively connected to a detection target; a plate-shaped housing having a terminal accommodating recess accommodating the voltage detection terminal; a cover configured to be locked to the housing at a temporary locking position where the first location of the voltage detection terminal accommodated in the terminal accommodating recess is not covered and a final locking position where the first location is covered; a temperature measurer accommodating a temperature-measuring element and attached to the housing; and an electric wire conductively connected to a second location of the voltage detection terminal and drawn out to the outside of the housing. The temperature measurer is arranged such that at least a part of the temperature measurer is overlapped with the voltage detection terminal in a plate thickness direction of the housing.

Abstract: A conductive module includes: a conductive board; a voltage detection terminal having a first location configured to be conductively connected to the conductive board; a temperature measurer including a temperature-measuring element and a case holding the temperature-measuring element; a plate-shaped housing assembled to the conductive board, the housing having a terminal accommodating recess accommodating the voltage detection terminal and a temperature measurer accommodating recess accommodating the temperature measurer; a heat-conductive filler disposed in a recessed groove of the temperature measurer accommodating recess; a cover configured to be locked to the housing at a temporary locking position where the first location of the voltage detection terminal accommodated in the terminal accommodating recess is not covered and a final locking position where the first location is covered; and an electric wire conductively connected to a second location of the voltage detection terminal and drawn out to the o

Abstract: A first board-shaped member includes a conductive plate disposed between a plurality of stacked power storage modules, a battery stack plate including a board-shaped insulating housing having a fitting groove recessed in a side face of the board-shaped insulating housing so as to fit with a side edge of the conductive plate, a sealing material supply groove respectively provided in front and back faces of the insulating housing along an extension direction of the fitting groove, a through hole that communicates with the sealing material supply groove and the fitting groove, and a sealing material pre-filled into the fitting groove and extruded from the fitting groove to the front and back faces of the insulating housing through the through hole and the sealing material supply groove when the side edge of the conductive plate is fitted into the fitting groove.

Abstract: A temperature detection unit includes a board-shaped housing having a board side face provided with a recess configured to be fitted with a side edge of a conductive board disposed between a plurality of stacked power storage modules, and a temperature detection sensor mounted on the housing and configured to measure a temperature of the power storage modules. The housing is provided with a sensor accommodating recess accommodating the temperature detection sensor. A plate end face on one side facing an intersecting direction with a direction that the board side face of the housing faces is provided with an opening configured to allow a temperature wire connected to the temperature detection sensor to extend toward the outside. The sensor accommodating recess extends obliquely to approach the conductive board from one side toward the other side in the intersecting direction.

Abstract: A voltage detection unit includes a voltage detection terminal having a first location being conductively connected to a detection target, a board-shaped housing having a terminal accommodating recess in which the voltage detection terminal is accommodated, a cover locked to the housing at a first temporary locking position where the first location of the voltage detection terminal accommodated in the terminal accommodating recess is not covered and a final locking position where the first location is covered, and an electric wire conductively connected to a second location of the voltage detection terminal and drawn out toward the outside of the housing. The housing includes a guide portion guiding the cover from the outside toward the first temporary locking position, and a first wall abutting on the cover when the cover is positioned at the first temporary locking position in a moving direction in which the cover is guided.

Abstract: The extraction portion of a current collector plate is configured to include a first piece portion extending in a direction orthogonal to the first direction from an outer edge portion provided on an edge of the flat plate portion when viewed from the first direction, a second piece portion extending in the first direction and having an attachment portion that attaches the extraction portion, and a bent portion being where a plate material configuring the extraction portion bends, and connecting the first piece portion and the second piece portion. A spring portion that is configured to relieve a stress acting on the extraction portion is provided between the connection portion to the outer edge portion and the attachment portion in the extraction portion. The spring portion includes at least a first bent portion being where the plate material bends other than at the bent portion.

Abstract: A power storage device includes a power storage module, a current collector plate, an insulating plate, and a restraint plate. The insulating plate and the restraint plate have different coefficients of thermal expansion. The insulating plate has a facing surface facing the restraint plate, and a first protruding portion provided on the facing surface in a position spaced from a center of the facing surface. The restraint plate is provided with a first hole portion into which the first protruding portion is inserted. The first protruding portion is divided into a first protrusion and a second protrusion in a second direction. The first protrusion is disposed closer to the center of the facing surface in the second direction. The second protrusion is disposed closer to an outer edge of the facing surface in the second direction.

Abstract: A power storage module includes an electrode laminate including a plurality of bipolar electrodes which are laminated and a sealing body sealing a space between a pair of the bipolar electrodes adjacent to each other in a laminating direction among the plurality of bipolar electrodes in the electrode laminate. Each of the plurality of bipolar electrodes includes an electrode plate. The sealing body includes a group of primary sealing bodies each provided at an edge portion of the electrode plate and a secondary sealing body. The secondary sealing body includes a first resin portion that is provided along a side surface of the electrode laminate extending in the laminating direction and bonds the group of primary sealing bodies, and a second resin portion covering the first resin portion.

Abstract: The power storage device includes power storage units arranged with a conductive plate interposed therebetween in the vertical direction, each of the power storage units includes an electrode stack including bipolar electrodes stacked with a separator interposed therebetween, and a sealing member provided around the electrode stack so as to seal a housing space formed between adjacent electrodes of the electrode stack. At least one of the power storage units is provided with an overhang member on an outer peripheral surface of the sealing member. The overhang member includes an inclined portion that extends from the outer peripheral surface of the sealing member toward the outside of the power storage unit and inclines downward as it leaves away from the outer peripheral surface of the sealing member, and a top portion formed at a lower end of the inclined portion.

Abstract: A pressure control valve structure includes a wall portion having a plurality of communication holes communicating with their associated internal spaces, a plurality of projections protruding outwardly from a wall surface of the wall portion so as to surround their associated communication holes, a plurality of elastic valve bodies closing their associated communication holes in contact with the projections, an outer peripheral wall portion protruding from the wall surface so as to surround the plurality of projections collectively, and a cover made of a resin and fixed to the outer peripheral wall portion, the cover compressing the elastic valve bodies towards their associated projections. The cover has a thick-walled portion where the cover is made partially thick in an outer surface of the cover.

Abstract: A power storage device includes a terminal cover mounted in a terminal base. The terminal cover includes a base portion attached to the terminal base, cover the terminal base, and have an opening exposing a terminal bolt; and a cover portion attached to the base portion and covering at least the opening. The base portion has a first wall and a second wall protruding in a second direction from the base portion and facing each other with a wiring sandwiched therebetween.

Abstract: A voltage detection unit includes a voltage detection terminal including a first portion configured to be conductively connected to a detection target and a second portion, a housing having a plate shape and including a terminal accommodating concave configured to accommodate the voltage detection terminal, a cover configured to be engaged with the housing at a temporary locking position at which the cover does not cover the first portion of the voltage detection terminal accommodated in the terminal accommodating concave and at a final locking position at which the cover covers the first portion and an electric wire conductively connected to the voltage detection terminal at the second portion and configured to, when the voltage detection terminal is accommodated in the terminal accommodating concave, be drawn out from the housing.

Abstract: A power storage device includes: a module stacked body including a plurality of power storage modules stacked in a first direction and having a first side surface extending in the first direction and a second direction orthogonal to the first direction and a second side surface adjacent to the first side surface and extending in the first direction and a third direction orthogonal to the first side surface and the second direction; a first restraint plate and a second restraint plate stacked on both sides of the module stacked body in the first direction and applying a restraint load to the module stacked body in the first direction; a wiring connected to the module stacked body; and a guide member coupled to the first restraint plate and the second restraint plate and disposing the wiring on the first side surface.

Abstract: A battery stack plate including a housing is provided. The housing has a first sub housing and a second sub housing. Each of the first and second sub housings has a coupling portion coupling the first and second sub housings to each other. The coupling portion includes a protruding portion provided on a coupling plate side face on which the first sub housing and the second sub housing are coupled to each other, and a recessed portion provided on the coupling plate side face at a position shifted from the protruding portion in the up-down direction.