Abstract: A first voltage detection device (30A) includes: a first voltage detection portion (310A); and a first shaft member (340A) extending through a part of the first voltage detection portion (310A). The first voltage detection portion (310A) includes a first ridge (318A) located at least partially around a first through hole (312aA) of the first voltage detection portion (310A) through which the first shaft member (340A) extends.

Abstract: At least a part of a positive electrode lead (110) and at least a part of a negative electrode lead (120) are bonded to each other. A plurality of the positive electrode leads (110) and a plurality of the negative electrode leads (120) are folded back from one of a plurality of first battery cells (100a) and a plurality of second battery cells (100b) to the other of the plurality of first battery cells (100a) and the plurality of second battery cells (100b) through the at least a part of the plurality of positive electrode leads (110) and the at least a part of the plurality of negative electrode leads (120).

Abstract: A photodetection device includes a substrate and a plurality of pixel units. The plurality of pixel units includes a pixel unit including a first photodetector in an active area, and a pixel unit including a second photodetector in an inactive area. The first photodetector includes a first lower electrode layer, a first lower extrinsic semiconductor layer, a first intrinsic semiconductor layer, a first upper extrinsic semiconductor layer, and a first upper electrode layer. The second photodetector includes a second lower electrode layer, a second lower extrinsic semiconductor layer, a second intrinsic semiconductor layer, a second upper extrinsic semiconductor layer, and a second upper electrode layer. The second lower electrode layer is covered with the second lower extrinsic semiconductor layer and the second intrinsic semiconductor layer.

Abstract: A first voltage detection device (30) detects a voltage of a lead portion (150) folded back between different battery cells (100). The first voltage detection device (30) includes a first voltage detection portion (410), a first voltage detection line (420) electrically connected to the first voltage detection portion (410), and a first holding body (300) holding the first voltage detection portion (410) and the first voltage detection line (420).

Abstract: Provided is a battery module configured so that connection among tabs and a bus bar stacked on each other is properly made. The battery module includes: multiple battery cells 10 each of which has tabs 101, 102; bus bars 152, 153 electrically connecting the battery cells to each other; and an electrical insulating bus bar holder 150 holding the bus bars 152, 153 such that the bus bars 152, 153 are arranged apart from each other in parallel. The bus bar holder 150 has, in regions adjacent to the bus bars 152, 153, slit openings 156b to 156e through which the tabs 101, 102 are drawn. The bus bars 152, 153 include plate-shaped tab connection portions standing on an outer peripheral surface of the bus bar holder 150 and joined to the tabs 101, 102.

Abstract: Provided is a battery module configured so that cooling performance can be improved. The battery module includes multiple battery cells 10 stacked on each other, a spacer 12 provided at an end portion of each battery cell 10, and heat transfer plates 20 each of which has a heat absorption portion 20a arranged between the multiple battery cells 10 stacked on each other to absorb heat from the battery cells 10 and a heat dissipation portion 20b dissipating the heat absorbed by the heat absorption portion 20a to the outside. The heat dissipation portion 20b is bent relative to the heat absorption portion 20a, and is exposed through between the battery cells 10 to contact the spacer 12. The spacer 12 includes contact portions 126 having contact surfaces 260 contacting the heat dissipation portion 20b, and a positioning portion 127a having a surface 270 facing a direction opposite to that of the contact surface 260 and defining the position of the spacer 12.

Abstract: A first voltage detection device includes a first holding body, a first voltage detection portion held by the first holding body, and a first conductor attached to the first holding body, at least a portion of the conductor being functioning as a fuse.

Abstract: A battery module includes a battery cell, a positive electrode lead or negative electrode lead provided in the battery cell, a first conductor electrically connected to the battery cell, at least a portion of the first conductor being functioning as a fuse above the positive electrode lead or the negative electrode lead, and a first base, at least a portion of the first base being located between the positive electrode lead or negative electrode lead, and the fuse.

Abstract: A first fuse device includes a first conductor, at least a portion of the conductor being functioning as a fuse, and a first wiring electrically connected to the first conductor. At least a portion of the first wiring passes through a first space of the first conductor, the first space being defining the fuse.

Abstract: A first voltage detection device includes a plurality of first voltage detection portions connected to a plurality of lead portions of a plurality of battery cells, a first holding body holding the plurality of first voltage detection portions, and an insulator provided at the first holding body, at least a portion of the insulator being located between the different lead portions.

Abstract: A photodetection device includes a substrate and a plurality of pixel units. The plurality of pixel units includes a pixel unit including a first photodetector in an active area, and a pixel unit including a second photodetector in an inactive area. The first photodetector includes a first lower electrode layer, a first lower extrinsic semiconductor layer, a first intrinsic semiconductor layer, a first upper extrinsic semiconductor layer, and a first upper electrode layer. The second photodetector includes a second lower electrode layer, a second lower extrinsic semiconductor layer, a second intrinsic semiconductor layer, a second upper extrinsic semiconductor layer, and a second upper electrode layer. The second lower electrode layer is covered with the second lower extrinsic semiconductor layer and the second intrinsic semiconductor layer.

Abstract: A unit cell including a cell body, an electrode tab (an anode side electrode tab and a cathode side electrode tab) and a sealing member (laminate film). The cell body includes a power-generating element and is formed into a flat shape. The anode side electrode tab and the cathode side electrode tab extend out from the cell body. The sealing member (laminate film) includes a sheet-shaped metal layer and a sheet-shaped insulating layer that covers and insulates the metal layer from both sides to sandwich and seal the cell body. In the sealing member, an exposed end portion of a metal layer is spaced from a surface of the insulating layer, while bending at least a portion of an outer edge.

Abstract: A spacer is used with a unit cell that has a cell body including a power-generating element and formed to have a flat shape and an electrode tab extending out from the cell body. The first spacer has a protrusion, a recess, and an opening. The protrusion has a protruding shape and is inserted into a hole or notch provided on the electrode tab to guide the electrode tab. The first recess has a recessed shape, and is separated from the electrode tab around the base of the protrusion. The first opening allows a portion of the first recess to communicate with a side surface of the spacer.

Abstract: A spacer (first spacer 114) has an insulating property, is used in a battery pack 100, obtained by electrically interconnecting unit cells 110 that are stacked one atop another, by means of a bus bar 132 along the stacking direction (Z direction) of the unit cells, each having a cell body 110H, which includes a power-generating element 111 and is formed in a flat shape, and an electrode tab 112, which is drawn out from the cell body 110H and whose distal end portion 112d is folded along the thickness direction of the cell body 110H; and is provided between each of the unit cells. The first spacer has an abutting portion 114h, a recessed portion 114i, and a communicating portion 114j. The abutting portion abuts the distal end portion of the electrode tab along the stacking direction of the unit cells. The recessed portion is recessed in a direction intersecting the stacking direction of the unit cells so as to be separated from the distal end portion of the electrode tab.

Abstract: A spacer (first spacer 114) has an insulating property, is used in a battery pack 100, obtained by electrically interconnecting unit cells 110 that are stacked one atop another, by means of a bus bar 132 along the stacking direction (Z direction) of the unit cells, each having a cell body 110H, which includes a power-generating element 111 and is formed in a flat shape, and an electrode tab 112, which is drawn out from the cell body 110H and whose distal end portion 112d is folded along the thickness direction of the cell body 110H; and is provided between each of the unit cells. The first spacer has an abutting portion 114h, a recessed portion 114i, and a communicating portion 114j. The abutting portion abuts the distal end portion of the electrode tab along the stacking direction of the unit cells. The recessed portion is recessed in a direction intersecting the stacking direction of the unit cells so as to be separated from the distal end portion of the electrode tab.

Abstract: A battery pack includes a cell group, a bus bar and a terminal member. The cell group includes a plurality of unit cells stacked in a thickness direction. Each of the unit cells includes a battery main body having a power generation element and a flat shape, and an electrode tab protruding out from the battery main body and arranged along a stacking direction. The bus bar is joined to the electrode tabs and electrically connects the electrode tabs. The terminal member is joined to the bus bar to transfer input and output of electric power in the cell group. The terminal member is joined to the bus bar at a terminal joining position that is spaced away from a joining position between the bus bar and the electrode tabs when viewing a surface on which the electrode tabs are arranged from a direction that is orthogonal to the surface.

Abstract: A unit cell including a cell body, an electrode tab (an anode side electrode tab and a cathode side electrode tab) and a sealing member (laminate film). The cell body includes a power-generating element and is formed into a flat shape. The anode side electrode tab and the cathode side electrode tab extend out from the cell body. The sealing member (laminate film) includes a sheet-shaped metal layer and a sheet-shaped insulating layer that covers and insulates the metal layer from both sides to sandwich and seal the cell body. In the sealing member, an exposed end portion of a metal layer is spaced from a surface of the insulating layer, while bending at least a portion of an outer edge.

Abstract: A busbar module includes a busbar holding plate and a busbar cover attached to the busbar holding plate. The busbar holding plate includes a busbar holding face and a bearing including a hole and a wall to define the hole. The busbar cover includes protrusions protruding toward each other in the axial direction at positions corresponding to the hole. The protrusions are opposed to each other with a gap less than a dimension of the hole in the axial direction. The protrusions are disposed in the hole to rotate the busbar cover about the protrusions between a covering position and an uncovering position. The busbar cover is flexible to deform such that the gap expands to allow the wall to pass through the gap during attachment of the bulbar cover to the busbar holding plate and restores its original shape when passing of the wall through the gap is complete.

Abstract: A battery pack includes battery modules and a base member on which the battery modules are mounted. The battery modules include a plurality of unit cells are stacked in a thickness direction, have a flat shape and positive and negative terminals for transferring input and output of electric power. The terminals are disposed on an opposite side of the base member side in the battery module. The unit cells include a cell body that includes a power generation element and an electrode tab. The battery module includes a pair of first cover members in the stacking direction and a pair of second cover members in a direction that intersects with the stacking direction and that intersects with a direction in which the electrode tab extends. The second cover members are joined to the first cover members while the stacked unit cells are pressurized in the stacking direction.

Abstract: A battery pack has a cell group and a bus bar. The cell group is stacking a plurality of unit cells in a thickness direction. The unit cells each includes a cell body having a power generation element and a flat shape, and an electrode tab protruding out from the cell body. The electrode tabs have distal end portions bent in a stacking direction of the unit cells. The flat plate shape bus bar connects the distal end portions of the electrode tabs of the unit cells while facing the distal end portions, and electrically connects the electrode tabs of at least two of the unit cells with each other.