Abstract: Provided are a laser-bonded component and a production method for same that ensure sufficient bonding strength using little laser energy and which cause little increase in surrounding temperature. A nickel layer, being a surface layer, is formed having sufficient thickness on the upper surface of a copper plate that is uppermost amongst at least two superposed copper plates, a laser is irradiated from above the nickel layer, a re-solidification section formed by fusing and alloying the copper in the copper plates and the nickel in the nickel layer is formed through to inside the bottommost copper plate, and the copper plates are bonded together. The re-solidification section having high breaking strength is formed by the alloying of the nickel and the copper. As a result, the copper plates can be bonded with a small welding surface area and little laser energy.

Abstract: A battery pack includes a plurality of battery modules including a plurality of cells aligned and accommodated in a case, wherein a battery assembly in which the plurality of cells are aligned in a row is used as a unit, and the multiple ones of the battery assembly are aligned in each battery module. The battery modules are a first battery module in which the plurality of battery assemblies are aligned in parallel and second battery modules in which the plurality of battery assemblies are aligned in series, and the first battery module and the second battery modules are combined with each other to form the battery pack.

Abstract: A battery module is configured such that n series blocks 20, each having m cells 10 connected in series, are connected in parallel. Adjacent cells 10 are connected in parallel via a first fusible link 30. One end of each of the series block 20 is connected to an input/output terminal 50 via a second fusible link 40. The number m of the cells 10 and the number n of the series blocks satisfy the formulas (1) and (2): m?½[Vc/Rc·If1?Rf1/Rc+3]??(1) n?(Vc+If2·Rc)/[Vc?(m?1)If2·Rc]??(2) where Vc and Rc represent an electromotive voltage and an internal resistance of the cell 10, respectively; Rf1 and If1 represent a resistance and a fuse current of the first fusible link 30, respectively; and If2 represents a fuse current of the second fusible link 40.

Abstract: A battery retainment block includes a plurality of block pieces each having a battery storage unit for retaining a battery. The plurality of block pieces are aligned and, among the plurality of block pieces, two block pieces that are adjacent to each other are coupled together. A gap is provided between the two block pieces that are adjacent to each other to serve as a circulation space for circulating a medium.

Abstract: A battery connection member 25 configured to connect a plurality of batteries 29 in parallel includes a main conductive path portion 25a and a plurality of connection terminals 25b each configured to connect the main conductive path portion 25a to one of electrodes of each battery 29. The connection terminals 25b include fuse portions 25c configured to be blown when a current equal to or higher than a predetermined value flows. When the plurality of batteries 29 are connected in parallel by the battery connection member 25, the fuse portions 25c are arranged in space between the main conductive path portion 25 and the batteries 29.

Abstract: A battery pack includes a plurality of battery modules including a plurality of cells aligned and accommodated in a case, wherein a battery assembly in which the plurality of cells are aligned in a row is used as a unit, and the multiple ones of the battery assembly are aligned in each battery module. The battery modules are a first battery module in which the plurality of battery assemblies are aligned in parallel and second battery modules in which the plurality of battery assemblies are aligned in series, and the first battery module and the second battery modules are combined with each other to form the battery pack.

Abstract: A battery pack includes a plurality of battery modules including a plurality of cells 100 aligned and accommodated in a case, wherein a battery assembly 200 in which the plurality of cells 100 are aligned in a row is used as a unit, and the multiple ones of the battery assembly 200 are aligned in each battery module. The battery modules are a first battery module 300 in which the plurality of battery assemblies 200 are aligned in parallel and second battery modules 400A, 400B in which the plurality of battery assemblies 200 are aligned in series, and the first battery module 300 and the second battery modules 400A, 400B are combined with each other to form the battery pack.

Abstract: The case housing a plurality of cells is divided, by a circuit board provided at the same sides of the cells, into a housing space housing the cells and an exhaust duct for releasing a gas from the vents of the cells to outside the case. The vents of the cells communicate with the exhaust duct through openings formed in the flat plate. The exhaust duct is divided into a first space and a second space by a partition provided between the flat plate and an external plate of the case. The first space communicates with the second space through holes formed in the partition.

Abstract: The case 20 housing a plurality of cells 100 is divided, by a circuit board 30 provided at the same sides of the cells 100, into a housing space 50 housing the cells 100 and an exhaust duct 60 for releasing a gas from the vents 8a of the cells 100 to outside the case 20. The vents 8a of the cells 100 communicate with the exhaust duct 60 through openings 30a formed in the flat plate 30. The exhaust duct 60 is divided into a first space 61 and a second space 62 by a partition 40 provided between the flat plate 30 and an external plate 21 of the case 20. The first space 61 communicates with the second space 62 through through holes 40a formed in the partition 40.

Abstract: A battery retainment block includes a plurality of block pieces each having a battery storage unit for retaining a battery. The plurality of block pieces are aligned and, among the plurality of block pieces, two block pieces that are adjacent to each other are coupled together. A gap is provided between the two block pieces that are adjacent to each other to serve as a circulation space for circulating a medium.

Abstract: The case 20 housing a plurality of cells 100 is divided, by a circuit board 30 provided at the same sides of the cells 100, into a housing space 50 housing the cells 100 and an exhaust duct 60 for releasing a gas from the vents 8a of the cells 100 to outside the case 20. The vents 8a of the cells 100 communicate with the exhaust duct 60 through openings 30a formed in the flat plate 30. The exhaust duct 60 is divided into a first space 61 and a second space 62 by a partition 40 provided between the flat plate 30 and an external plate 21 of the case 20. The first space 61 communicates with the second space 62 through through holes 40a formed in the partition 40.

Abstract: A battery block includes a metal case including a side surface and a bottom surface, and a plurality of cells accommodated in the metal case, wherein each cell includes a first electrode and a second electrode which is electrically insulated from the first electrode, and also serves as a cell case of the cell, the plurality of cells are aligned with the first electrodes being in a same direction, the first electrodes of the plurality of cells are connected to a connector arranged to face an opening of the metal case, the second electrodes of the plurality of cells are connected to the bottom surface of the metal case, the height of the side surface of the metal case is substantially the same as the height of the cells, and the opening of the metal case is almost completely covered with the connector.

Abstract: Provided are a laser-bonded component and a production method for same that ensure sufficient bonding strength using little laser energy and which cause little increase in surrounding temperature. A nickel layer, being a surface layer, is formed having sufficient thickness on the upper surface of a copper plate that is uppermost amongst at least two superposed copper plates, a laser is irradiated from above the nickel layer, a re-solidification section formed by fusing and alloying the copper in the copper plates and the nickel in the nickel layer is formed through to inside the bottommost copper plate, and the copper plates are bonded together. The re-solidification section having high breaking strength is formed by the alloying of the nickel and the copper. As a result, the copper plates can be bonded with a small welding surface area and little laser energy.

Abstract: A battery module 100 includes a plurality of batteries aligned and accommodated in a housing 20, wherein each batteries has an opening portion 17 at an electrode portion 16 of the battery to release gas generated in the battery outside the battery, the housing 20 is partitioned by a circuit board 30 disposed in contact with battery cases 5 around the electrode portions 16 of the batteries into a storage portion 54 in which the batteries are stored, and an exhaust chamber 24 via which the gas released from the opening portion 17 of the electrode portion 16 is exhausted outside the housing 20, the electrode portions 16 of the batteries are connected to a connector 32 on the circuit board 30, and the opening portions 17 of the electrode portions 16 are in communication with the exhaust chamber 24 via through holes 36 in the circuit board 30.

Abstract: A battery (3) includes a battery case (10) having an opening sealed with a sealing plate (13). The sealing plate (13) has a protrusion (13a) extending in a direction toward the outside of the battery case (10), and a ring-shaped insulator (32) is provided on an outer circumferential surface of the protrusion (13a). An inner circumferential portion (32e) of the insulator (32) is in contact with the outer circumferential surface (13b) of the protrusion (13a), and an outer circumferential portion (32d) of the insulator (32) is extended to be positioned on an opening end (10a) of the battery case (10).

Abstract: A battery block includes a metal case including a side surface and a bottom surface, and a plurality of cells accommodated in the metal case, wherein each cell includes a first electrode and a second electrode which is electrically insulated from the first electrode, and also serves as a cell case of the cell, the plurality of cells are aligned with the first electrodes being in a same direction, the first electrodes of the plurality of cells are connected to a connector arranged to face an opening of the metal case, the second electrodes of the plurality of cells are connected to the bottom surface of the metal case, the height of the side surface of the metal case is substantially the same as the height of the cells, and the opening of the metal case is almost completely covered with the connector.

Abstract: The case 20 housing a plurality of cells 100 is divided, by a circuit board 30 provided at the same sides of the cells 100, into a housing space 50 housing the cells 100 and an exhaust duct 60 for releasing a gas from the vents 8a of the cells 100 to outside the case 20. The vents 8a of the cells 100 communicate with the exhaust duct 60 through openings 30a formed in the flat plate 30. The exhaust duct 60 is divided into a first space 61 and a second space 62 by a partition 40 provided between the flat plate 30 and an external plate 21 of the case 20. The first space 61 communicates with the second space 62 through holes 40a formed in the partition 40.

Abstract: In an assembled battery (2), batteries (3) are arranged in such a manner that sealing plates (13) for sealing openings of battery cases (10) face the same direction. Terminal (10) of first electrodes of the batteries (3) are connected to a first electrode connecting pieces (33) arranged near the sealing plates (13), and terminal (13) of second electrodes of the batteries (3) are connected to a second electrode connecting pieces (27) arranged near the sealing plates (13). The first electrode connecting pieces (33) are connected in parallel with each other, and the second electrode connecting pieces (27) are connected in parallel with each other. The first electrode connecting pieces (33) and the second electrode connecting pieces (27) are stacked on the sealing plates (13) with an insulating member (32) interposed therebetween.

Abstract: A battery module 100 includes a plurality of cells 10 arranged in a grid array. The cells 10 arranged in a row direction are connected together in parallel by a first connecting member 20. The cells 10 arranged in a column direction are connected together such that the cells 10 adjacent to each other in the column direction are connected together in series by a second connecting member 30. When an internal short-circuit occurs in any one of the cells 10, the first connecting member 20 connected to the cell 10 in which the internal short-circuit has occurred is melted by Joule heat generated due to a short-circuit current flowing into the cell 10 in which the internal short-circuit has occurred from the other cells 10 in which no internal short-circuit occurs via the first connecting member 20.

Abstract: A battery pack includes a plurality of battery modules including a plurality of cells 100 aligned and accommodated in a case, wherein a battery assembly 200 in which the plurality of cells 100 are aligned in a row is used as a unit, and the multiple ones of the battery assembly 200 are aligned in each battery module. The battery modules are a first battery module 300 in which the plurality of battery assemblies 200 are aligned in parallel and second battery modules 400A, 400B in which the plurality of battery assemblies 200 are aligned in series, and the first battery module 300 and the second battery modules 400A, 400B are combined with each other to form the battery pack.