Abstract: A battery module including a plurality of batteries, and a busbar electrically connecting the batteries. The battery includes: a battery can including a cylindrical portion, a bottom wall closing one end of the cylindrical portion, and an open rim continuing to the other end of the cylindrical portion; an electrode body; and a sealing body which seals an opening defined by the open rim. The sealing body has a first principal surface facing an interior of the battery can, a second principal surface opposite to the first principal surface, and a side surface connecting the first principal surface with the second principal surface. The busbar has a plurality of through-holes fitted with the batteries. The open rim of each of the batteries fitted into the through-holes is at least partially in contact with the busbar. The sealing body and the busbar are electrically insulated from each other.

Abstract: A power storage device includes a case, a power storage element disposed in the case, a lead connected to an electrode of the power storage element, a sealing member sealing an opening of the case. The sealing member includes a gasket and a sealing plate having conductivity. The gasket includes a base having a disk shape. The base is disposed between the sealing plate and the power storage element. The base has a through-hole formed therein. The sealing plate includes a protrusion inserted in the through-hole. The protrusion of the sealing plate is connected to the lead. The protrusion is configured to be displaced in a direction away from the lead in accordance with an increase of an internal pressure of the case so as to be disconnected from the lead.

Abstract: A bus bar has: a first joint part connected to an output terminal of the first cell; a second joint part connected to an output terminal of the second cell; and a projection that is disposed between the first joint part and the second joint part and protrudes in a stacking direction in which the cells and the bus bar are stacked. The projection has a first inclined part extending from the first joint part and has a second inclined part extending from the second joint part. The first inclined part and the second inclined part are arranged in such a manner that the first inclined part and the second inclined part are aligned with a predetermined interval W and that the predetermined interval gradually becomes wider from a first end side toward a second end side.

Abstract: A power storage module includes at least one power storage device, and a buffer member arranged with the power storage device in a first direction X. The buffer member includes a hard part having a predetermined hardness and a soft part softer than the hard part, the hard part and the soft part receiving a load in first direction X from the power storage device. The hard part changes its shape by receiving a load of a predetermined magnitude or more. The buffer member changes its state, by the hard part changing its shape, from a first state in which the load is received by the hard part to a second state in which the load is received by the soft part.

Abstract: An electrical storage module includes at least one electrical storage device, and a buffer member that is arrayed in first direction X together with the electrical storage device and receives a load in first direction X from the electrical storage device. The buffer member has a soft part and a hard part, which is positioned closer to an outer edge part of the buffer member than the soft part, and the soft part is more easily deformed than the hard part.

Abstract: A bus bar has: a first joint part connected to an output terminal of the first cell; a second joint part connected to an output terminal of the second cell; and a projection that is disposed between the first joint part and the second joint part and protrudes in a stacking direction in which the cells and the bus bar are stacked. The projection has a first inclined part extending from the first joint part and has a second inclined part extending from the second joint part. The first inclined part and the second inclined part are arranged in such a manner that the first inclined part and the second inclined part are aligned with a predetermined interval W and that the predetermined interval gradually becomes wider from a first end side toward a second end side.

Abstract: A bus bar has: a first joint part connected to an output terminal of the first cell; a second joint part connected to an output terminal of the second cell; and a projection that is disposed between the first joint part and the second joint part and protrudes in a stacking direction in which the cells and the bus bar are stacked. The projection has a first inclined part extending from the first joint part and has a second inclined part extending from the second joint part. The first inclined part and the second inclined part are arranged in such a manner that the first inclined part and the second inclined part are aligned with a predetermined interval W and that the predetermined interval gradually becomes wider from a first end side toward a second end side.

Abstract: A power storage module includes at least one cylindrical power storage device, and a cell holder that houses the power storage device. The cell holder includes a retainer that holds a lower side in an axial direction of the power storage device, and a side wall that covers a side peripheral surface of the power storage device. The retainer includes a container which houses a lower end side of the power storage device, and a notch that is formed on a side surface of the retainer along an inner surface of the container.

Abstract: A power storage module includes a plurality of power storage devices and a bus bar electrically connecting the plurality of power storage devices. Each power storage device has a housing and a pair of output terminals disposed on a first surface of the housing. The bus bar has the plurality of terminal connections connected to the output terminals of each power storage device, and a linking part connecting the plurality of terminal connections. Each terminal connection part has a first part connected to each output terminal and a second part continuous from the first part and extending along a second surface spreading in a direction intersecting the first surface of the housing. Each linking part has a third part that connects the second parts of the adjacent terminal connections to each other.

Abstract: An energy storage apparatus includes: a plurality of electrode assemblies that are cylindrical, and a film outer body including a plurality of housing portions that individually wrap the plurality of electrode assemblies; and a sealing portion that seals each housing portion and connects the plurality of housing portions to each other. The film outer body is bent or curved between the housing portions adjacent each other to extend in a zigzag manner.

Abstract: A battery pack includes: a battery stack; a housing that houses the battery stack; and a skeleton part that is housed in the housing and reinforces the housing. The skeleton part includes a stem extending in a first direction, a plurality of branch portions that protrude from the stem and are arranged in a row in the first direction, and a plurality of housing spaces, each of the housing spaces being defined by a pair of branch portions disposed adjacently to each other and housing the battery stack. The stem and the plurality of branch portions are fixed to the housing.

Abstract: A power storage device includes a case, a power storage element disposed in the case, a lead connected to an electrode of the power storage element, a sealing member sealing an opening of the case. The sealing member includes a gasket and a sealing plate having conductivity. The gasket includes a base having a disk shape. The base is disposed between the sealing plate and the power storage element. The base has a through-hole formed therein. The sealing plate includes a protrusion inserted in the through-hole. The protrusion of the sealing plate is connected to the lead. The protrusion is configured to be displaced in a direction away from the lead in accordance with an increase of an internal pressure of the case so as to be disconnected from the lead.

Abstract: An electrical storage module includes at least one electrical storage device, and a buffer member that is arrayed in first direction X together with the electrical storage device and receives a load in first direction X from the electrical storage device. The buffer member has a soft part and a hard part, which is positioned closer to an outer edge part of the buffer member than the soft part, and the soft part is more easily deformed than the hard part.

Abstract: An electrical storage module includes: at least one electrical storage device; and a buffer member that is arranged in first direction X together with the electrical storage device and is configured to receive a load from the electrical storage device in first direction X. The buffer member includes a first layer portion and a second layer portion arranged in first direction X. The first layer portion has first softened portions each formed of a through hole or a recessed part. The second layer portion has second softened portion each formed of a through hole or a recessed part. The first softened portion and the second softened portion are at least partially displaced from each other as viewed in first direction X.

Abstract: A power storage module includes at least one power storage device, and a buffer member arranged with the power storage device in a first direction X. The buffer member includes a hard part having a predetermined hardness and a soft part softer than the hard part, the hard part and the soft part receiving a load in first direction X from the power storage device. The hard part changes its shape by receiving a load of a predetermined magnitude or more. The buffer member changes its state, by the hard part changing its shape, from a first state in which the load is received by the hard part to a second state in which the load is received by the soft part.

Abstract: A busbar includes a plurality of sheets stacked together. The busbar includes: a main body that extends along an axis along which batteries are stacked together; and a plurality of connectors that are each thinner than the main body, and are welded to terminals of the batteries, respectively.

Abstract: A cell module includes: a battery cell group configured with a plurality of cylindrical battery cells; a positive current collector; and a negative current collector. The negative current collector has: a substrate disposed on a sealing body side of the cylindrical battery cells such that the negative current collector covers the battery cell group; and a current collecting pin protruding toward the battery cell group from the substrate. The current collecting pin is inserted into a gap between the cylindrical battery cells along an axial direction of such battery cells, and presses the side surfaces of outer cans of at least two cylindrical battery cells neighboring each other.

Abstract: A battery module includes battery stacks, a first restraining part, and a plurality of second restraining parts. The first restraining part has: a flat plate part; a plurality of first wall parts that protrude from a main surface of the flat plate part, extend in a stacking direction of the batteries, and are arranged in a first direction; and second wall parts extending in the first direction at end parts of each wall part. The second restraining parts are disposed individually corresponding to the first wall parts and each have: a belt part extending parallel to the flat plate part; a third wall part protruding from the belt part toward the first wall part and extending in the stacking direction; and fourth wall parts extending in the first direction at end parts of the third wall part. There are arranged a plurality of housing spaces for the battery stacks.

Abstract: A power storage module includes a plurality of power storage devices and a bus bar electrically connecting the plurality of power storage devices. Each power storage device has a housing and a pair of output terminals disposed on a first surface of the housing. The bus bar has the plurality of terminal connections connected to the output terminals of each power storage device, and a linking part connecting the plurality of terminal connections. Each terminal connection part has a first part connected to each output terminal and a second part continuous from the first part and extending along a second surface spreading in a direction intersecting the first surface of the housing. Each linking part has a third part that connects the second parts of the adjacent terminal connections to each other.

Abstract: A battery module including a plurality of batteries, and a busbar electrically connecting the batteries. The battery includes: a battery can including a cylindrical portion, a bottom wall closing one end of the cylindrical portion, and an open rim continuing to the other end of the cylindrical portion; an electrode body; and a sealing body which seals an opening defined by the open rim. The sealing body has a first principal surface facing an interior of the battery can, a second principal surface opposite to the first principal surface, and a side surface connecting the first principal surface with the second principal surface. The busbar has a plurality of through-holes fitted with the batteries. The open rim of each of the batteries fitted into the through-holes is at least partially in contact with the busbar. The sealing body and the busbar are electrically insulated from each other.