Yazaki Corporation

Toyota Jidosha Kabushiki Kaisha

Hirotaka Mukasa

Yoshiaki Ichikawa

Hirokuni Koike

Tomohiro Ikeda

Taishi Sakai

Kenji Kimura

Shinichi Yanagihara

Tatsuya Oga

Katsunori Sato

Kazuhiko Tsuchiya

Ryota Kataoka

Mariko Nakagawa

Yuta Fukuchi

A busbar module includes: a plurality of busbars arranged along a first direction and connected to battery cells; and a plate-like circuit body having a plurality of detection lines to be connected to the busbars and having flexibility, in which the circuit body includes a main line portion in which the plurality of detection lines is routed and branch portions, branching from the main line portion and in which the detection lines to be connected to the busbars are routed, the branch portions each include a stretchable portion that is stretchable along the first direction, the stretchable portions each have slits or a cutout formed in a direction intersecting the first direction in a plan view of the circuit body, and a detection line of each of the stretchable portions is routed along the slits or the cutout.

Busbar module

A cylindrical battery housing case has a plurality of cylindrical battery housing chambers each housing one cylindrical battery, and a plurality of elongated resilient members each having a protrusion for holding a cylindrical portion of the cylindrical battery is formed in a cantilevered manner inside notches in a side wall of each of the cylindrical battery housing chambers.

Cylindrical battery housing case

A conductor includes a connection conductor that is directly connected to at least one of a plurality of electrode terminals of an electrode terminal group of a plurality of battery cells arranged in a same direction; a linear conductor that is connected to a battery monitoring unit configured to monitor a battery state of the battery cells; a fuse element that is indirectly connected between the connection conductor and the linear conductor, and that melts when overcurrent flows between the connection conductor and the linear conductor; and a resin mold member that has an insulation property and that includes the fuse element, a part of the connection conductor, and a part of a relay terminal.

Connection structure of conductor and conductive module

A connection member configured to electrically connect respective storage elements to each other in a power storage device constituted by a plurality of storage elements. The connection member includes: a substrate; and a plurality of connecting portions connected to electrodes of the respective storage elements and configured to cut off electric connection with the storage elements by fusing at the time when a current of a predetermined value or more flows therein. The connecting portion is formed by performing punching on the substrate and includes at least two bent portions bent in a punching direction. One of the bent portions is bent along a first direction perpendicular to the punching direction, and the other one of the bent portions is bent along a second direction perpendicular to the punching direction and perpendicular to the first direction.

Connection member

A battery wiring module is to be combined with a battery module including a plurality of battery cells stacked in a state of being alternatively reversed so that a positive electrode terminal and a negative electrode terminal are adjoined between the adjacent battery cells. The battery wiring module is provided with a plurality of linear conductors which are arranged in parallel at an interval, a plurality of bus bars which are arranged at a predetermined interval along to at least one side of the plurality of linear conductors, and an insulation resin part which integrally covers both an outer periphery of the plurality of linear conductors and side edges of the plurality of bus bars adjacent to the linear conductors.

Battery wiring module and battery wiring module manufacturing method

Provided is a method for manufacturing a battery wiring module including: a coating step of coating a first long side portion of a flat plate conductor and a plurality of linear conductors following the first long side portion by a first insulating resin portion and of coating a second long side portion of the flat plate conductor and a plurality of linear conductors following the second long side portion by a second insulating resin portion; and a cutting step of cutting the insulating resin portion so that the plurality of busbars is divided into a plurality of busbar groups and the plurality of linear conductors coated by any one of the first insulating resin portion and the second insulating resin portion and the busbar groups are separated.

Method for manufacturing battery wiring module

Provided is a battery wiring module including: a plurality of linear conductors disposed in parallel with a predetermined gap therebetween; a plurality of busbars disposed in parallel along at least one of the linear conductors disposed at both ends having a predetermined gap therebetween so as to electrically connect electrode terminals provided in at least two battery cells connected to each other in the same direction among the plurality of battery cells overlapping each other in the same direction, the electrode terminals being arranged in the same direction; a first insulating resin portion which integrally coats the outer peripheral portions of the plurality of linear conductors and a side edge portion adjacent to the linear conductor in the plurality of busbars; and a connection conductor which electrically connects the linear conductor and the busbar to each other.

Battery wiring module

Provided is a busbar module including a plurality of split busbar modules that are configured such that a busbar group including a plurality of busbars and split flat cable including a plurality of linear conductors are integrated at one end side in a longitudinal direction of the split flat cables. The plurality of split busbar modules include split flat cables having a length different from each other and are configured such that the split flat cables are overlapped with each other and the busbar groups are respectively arranged in the same direction.

Busbar module and battery pack

Provided is a method for manufacturing battery wiring module including: a coating step of coating one long side portion of an elongated flat plate conductor and outer peripheral portions of linear conductors disposed in parallel along the long side portion with a predetermined gap therebetween having a predetermined gap with respect to the long side portion by a first insulating resin portion; and a pressing step of separating the flat plate conductor at a predetermined gap in the longitudinal direction of the flat plate conductor and forming a plurality of busbar electrically connecting electrode terminals provided in at least two battery cells connected to each other in the same direction among the plurality of battery cells overlapping each other in the same direction, the electrode terminals being arranged in parallel in the same direction.

A battery wiring module is to be combined with a battery module including a plurality of battery cells stacked in a state of being alternatively reversed so that a positive electrode terminal and a negative electrode terminal are adjoined between the adjacent battery cells. The battery wiring module is provided with a plurality of linear conductors which are arranged at an interval, a plurality of bus bars which are arranged at an interval along to at least one side of the plurality of linear conductors so that each of the plurality of bus bars electrically connects the positive electrode terminal and the negative electrode terminal adjacent to each other, and an insulation resin part including both a covering part for covering an outer periphery of the plurality of linear conductors and a bus bar connection part.

A battery wiring module includes: connection members electrically connecting adjacent positive and negative electrodes in an electrode row of a battery assembly; voltage detection lines connecting the connection members and a control unit; and a holding member holding the connection members and the voltage detection lines, and including an electric wire arrangement part in which the voltage detection lines are arranged and which includes electric wire outlets. The batteries are divided into groups so as to correspond to the electric wire outlets, respectively, such that the voltage detection lines belonging to one of the groups are pulled out from the electric wire arrangement part toward the control unit through the corresponding one of the electric wire outlets.

A electric wire connection structure includes a flat cable including a plurality of linear conductors and an insulator covering the linear conductors; a plurality of busbars for electrically connecting electrode terminals provided on two or more of battery cells stretched in a given direction among the plurality of battery cells stacked in the direction and included in a battery module, the electrode terminals being lined up in the direction; and connecting members provided for each combination of the linear conductors and the busbars to include a connecting member main body and a pressure welding blade portion connected to the connecting member main body, a pressure welding groove being formed on the pressure welding blade portion.

Electric wire connection structure

A battery wiring module is manufactured by an arrangement process of arranging in parallel a long chain bus-bar which is configured by connecting a plurality of bus bars at chain parts, a covering process of covering both an outer periphery of plurality of linear conductors and a side edge of the chain bus-bar adjacent to the plurality of linear conductors with an insulation resin part integrally formed by extrusion molding, a breaking process of breaking the chain parts of the chain bus-bar in order to separate the plurality of bus bars, and a connection process of electrically connecting each of the plurality of linear conductors to a predetermined one of the bus bars.

Growing community of inventors

Shizuoka, Japan

Hirotaka Mukasa