Abstract: A wiring module to be attached to an electricity storage element group in which a plurality of electricity storage elements having electrodes are lined up includes a plurality of busbars to be connected to the electrodes and a plurality of accommodating portions in which the busbars are respectively accommodated. Each of the accommodating portions has an accommodating wall that is disposed around the busbar, and the accommodating wall includes a first adjoining wall and a second adjoining wall opposing the first adjoining wall. The first adjoining wall of one accommodating portion and the second adjoining wall of another accommodating portion are arranged adjoining each other. The first adjoining wall has a first locking portion that locks the busbar and an auxiliary wall that protrudes toward the second adjoining wall and covers the first locking portion from the second adjoining wall side. The second adjoining wall has an opening in which the auxiliary wall is accommodated.

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 method of manufacturing a metal member-welded structure includes: a preparing step of preparing an Al alloy member formed of an Al-based alloy and a Cu member containing Cu as a main component; and a welding step of applying laser from a side of the Al alloy member to the Al alloy member and the Cu member disposed to face each other, and welding the Al alloy member and the Cu member to each other. The Al-based alloy contains, as an additional element, one of: 1 mass % or more and 17 mass % or less of Si; 0.05 mass % or more and 2.5 mass % or less of Fe; and 0.05 mass % or more and 2.5 mass % or less of Mn. A laser applying condition satisfies an output of 550 W or more and a scanning rate of 10 min/sec or more.

Abstract: A connection structure between a battery module and an electrical device, the connection structure for connecting a battery module in which a plurality of electric cells are arranged in a line to an electrical device arranged on a side of the battery module. The connection structure includes: a connecting portion provided in the electrical device; a connection electrode provided in the battery module; and a connection bus bar having one end and another end, the one end being connected to the connecting portion of the electrical device, and a welding plate to be welded to the connection electrode in the battery module being provided at the other end. The welding plate is provided with a deformation-allowing portion for keeping the welding plate and the connection electrode of the battery module in a state of contact, the deformation-allowing portion being able to elastically deform.

Abstract: A wiring module comprising: a bus bar that connects adjacent electrode terminals of a plurality of single batteries each having positive and negative electrode terminals; and a detection terminal that is overlaid on the bus bar and is for detecting a state of a single battery among the plurality of single batteries. The detection terminal is provided with a welded portion welded onto the bus bar, a locked portion that locks to a locking portion provided on the bus bar and holds the detection terminal in a state in which the welded portion is overlaid on the bus bar, and a reinforcing portion that prevents the welded portion from performing a bending deformation so as to keep the welded portion in a flat plate shape overlaid on the bus bar.

Abstract: Provided is a technique that prevents impairment of attachability of an external connection bus bar. The present specification discloses a connection module to be attached to a power storage element group constituted by a plurality of power storage elements each having positive and negative electrode terminals and arranged side by side, the connection module including: a negative-electrode external connection bus bar that includes a plate-shaped extension portion and is configured to be electrically connected to an electrode terminal; and a second protector that holds the negative-electrode external connection bus bar. The second protector includes a placement portion on which the extension portion is placed and a locking portion that has a locking surface facing the placement portion, and the extension portion is provided with an extended locking piece 49 that extends from the extension portion toward the locking surface.

Abstract: An external connection bus bar holding structure includes: a first protector that holds one end portion of an external connection bus bar; a second protector that is arranged at an interval from the first protector and holds the other end portion of the external connection bus bar; and an intermediate protector including a first held portion that is held in the first protector and a second held portion that is held in the second protector. The intermediate protector holds the external connection bus bar at the first held portion and the second held portion and between the first protector and the second protector.

Abstract: A busbar module (10) includes a busbar (11) having a plate-like body (12) electrically connectable to battery cells (30), a barrel (16) composed of a cut-and-raised portion (15) formed on the plate-like body (12) and a wire (20) fixed to the barrel (16). Integration of the plate-like body (12) to be connected to the battery cells (30) and the barrel (16) to be fixed to the wire (20) achieves a weight reduction.

Abstract: An external connection busbar holding module includes: a first external connection busbar includes a bolt-fastening portion that is bent orthogonal to one end, and to which an external connection component is to be bolted, the bolt-fastening portion being provided at another end; and an external connection busbar protector that holds the first external connection busbar. The external connection busbar protector includes a positioning portion into which the bolt-fastening portion is inserted, and that positions the first external connection busbar. The positioning portion includes an entrance portion having a predetermined clearance relative to the bolt-fastening portion, and a clearance reduction portion that reduces the predetermined clearance.

Abstract: In a connection module attached to a single battery group from a first direction, a detection terminal connected to an electrode terminal of the single battery group includes: a body portion made of a metal plate material formed in an approximately rectangular plate shape; and a projection portion in a plate shape connected to a base edge of the body portion and having a plate surface intersecting with a plate surface of the body portion. An insulation protector of the connection module includes a holding portion holding the detection terminal in a posture in which the plate surface of the body portion is orthogonal to the first direction. The holding portion includes a locking piece. A lower surface of a claw portion provided at the lower end of the locking piece locks the plate surface of the body portion and restricts the movement of the detection terminal in the first direction.

Abstract: A connection module includes a busbar holding module including insulating protectors and an external connection busbar holder disposed above the busbar holding module. The insulating protectors include fixing portions joined to fixed portions provided in the power storage elements or another member to secure the external connection busbar holder. The external connection busbar holder includes a first external connection busbar and a second external connection busbar to which external connection members are bolted and engaging portions that engage with the fixing portions. Each of the fixing portions includes a fixing-reinforcement portion that is displaced to fill the clearance between the fixing portion and the fixed portion in response to engagement with the engaging portion.

Abstract: A connection module includes a busbar holding module, and an external connection busbar holding portion that is disposed on the busbar holding module. The busbar holding module includes an insulating protector configured to hold a plurality of busbars. The external connection busbar holding portion includes a first external connection busbar having an elongated shape, a second external connection busbar to which an external connection component is to be bolted, and an external connection busbar protector. The insulating protector includes a first engaging portion configured to be engaged with the external connection busbar protector, and the external connection busbar protector includes a first engaged portion configured to be engaged with the first engaging portion.

Abstract: An external connection busbar holding module includes: a first external connection busbar includes a bolt-fastening portion that is bent orthogonal to one end, and to which an external connection component is to be bolted, the bolt-fastening portion being provided at another end; and an external connection busbar protector that holds the first external connection busbar. The external connection busbar protector includes a positioning portion into which the bolt-fastening portion is inserted, and that positions the first external connection busbar. The positioning portion includes an entrance portion having a predetermined clearance relative to the bolt-fastening portion, and a clearance reduction portion that reduces the predetermined clearance.

Abstract: A connection module includes metal bus bars for electrically connecting adjacent ones of a plurality of power storage modules, a circuit board on which electronic components are mounted, and an insulating protector that is made of an insulating synthetic resin and includes a bottom wall, a board arrangement portion that protrudes from the bottom wall and in which the circuit board is to be arranged, and bus bar arrangement portions that protrude from the bottom wall and in which the bus bars are to be arranged.

Abstract: A connection module includes a negative electrode external connection busbar to which an external connection component is to be bolt-fastened; a positive electrode external connection busbar to which an external connection component is to be bolt-fastened; and an insulating protector configured to hold the external connection busbars in an insulated manner. The insulating protector includes a support plate portion including a support plate surface that faces and extends along an outer surface of a frame outer wall for accommodating an electricity storage element group in a state in which the connection module is attached to the electricity storage element group, at least the support plate surface being configured to abut against an outer surface of the frame outer wall so as to support the insulating protector when the external connection components are bolt-fastened to the first external connection busbar and the second external connection busbar.

Abstract: A connection module to be attached to a power storage element group having a plurality of power storage elements includes a plurality of bus bars each connecting electrode terminals of adjacent power storage elements, a wire bundle that is a bundle of wires for transmitting information, and an insulating protector that holds the plurality of bus bars. The insulating protector includes a protector body that insulates the bus bars from each other and a wire fixing portion provided at a position of the protector body at which the wires are drawn out, and the wire fixing portion includes an extension portion to which the wire bundle is to be fixed and that extends from an end portion of the protector body in a direction in which the wire bundle is drawn out, and a reinforcing portion that is continuous with the extension portion and the protector body.

Abstract: Provided is a technique that prevents impairment of attachability of an external connection bus bar. The present specification discloses a connection module to be attached to a power storage element group constituted by a plurality of power storage elements each having positive and negative electrode terminals and arranged side by side, the connection module including: a negative-electrode external connection bus bar that includes a plate-shaped extension portion and is configured to be electrically connected to an electrode terminal; and a second protector that holds the negative-electrode external connection bus bar. The second protector includes a placement portion on which the extension portion is placed and a locking portion that has a locking surface facing the placement portion, and the extension portion is provided with an extended locking piece 49 that extends from the extension portion toward the locking surface.

Abstract: A connection module includes a busbar holding module including insulating protectors and an external connection busbar holder disposed above the busbar holding module. The insulating protectors include fixing portions joined to fixed portions provided in the power storage elements or another member to secure the external connection busbar holder. The external connection busbar holder includes a first external connection busbar and a second external connection busbar to which external connection members are bolted and engaging portions that engage with the fixing portions. Each of the fixing portions includes a fixing-reinforcement portion that is displaced to fill the clearance between the fixing portion and the fixed portion in response to engagement with the engaging portion.

Abstract: Erroneous identification of parts is prevented. A connection module disclosed in the present specification is a connection module that is to be attached to an electricity storage element group in which a plurality of electricity storage elements each including positive and negative electrode terminals are arranged. The connection module includes: a plurality of busbars configured to connect the electrode terminals of the adjacent electricity storage elements to each other; and an insulating protector configured to be fixed to the electricity storage element group in a state in which the insulating protector holds the plurality of busbars, wherein the insulating protector is formed by a first protector and a second protector that is separate from the first protector, the first protector is provided with a first identifier, and the second protector is provided with a second identifier that is different from the first identifier.

Abstract: A connection module includes a negative electrode external connection busbar to which an external connection component is to be bolt-fastened; a positive electrode external connection busbar to which an external connection component is to be bolt-fastened; and an insulating protector configured to hold the external connection busbars in an insulated manner. The insulating protector includes a support plate portion including a support plate surface that faces and extends along an outer surface of a frame outer wall for accommodating an electricity storage element group in a state in which the connection module is attached to the electricity storage element group, at least the support plate surface being configured to abut against an outer surface of the frame outer wall so as to support the insulating protector when the external connection components are bolt-fastened to the first external connection busbar and the second external connection busbar.