Panasonic Intellectual Property Management Co., Ltd.

Panasonic Corporation

Matsushita Electric Industrial Co., Ltd.

Toshiki Itoi

Shunsuke Yasui

Shinya Geshi

Hiroshi Takasaki

Daisuke Kishii

Hiroyuki Nakamura

Hiroshi Yasuda

Takashi Nakagawa

Toshihiko Kurosaki

Yoshiaki Kobayashi

Masashi Ito

Shinichi Tanaka

Yukio Nishikawa

Haruo Isaka

Oose Okutani

Tomomi Tanaka

Naohisa Morimoto

Akifumi Hashimoto

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.

Laser-bonded component and production method for same

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.

Battery pack

A battery module is configured such that n series blocks, each having m cellsconnected in series, are connected in parallel. Adjacent cellsare connected in parallel via a first fusible link. One end of each of the series blockis connected to an input/output terminalvia a second fusible link. The number m of the cellsand the number n of the series blocks satisfy the formulas (1) and (2):&#x2266;&#xbd;[+3]&#x2003;&#x2003;(1)&#x2267;()/[V&#x2212;(&#x2212;1)]&#x2003;&#x2003;(2)

Battery module providing for disconnection of an abnormal cell

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.

Battery retainment block and battery module

A battery connection memberconfigured to connect a plurality of batteriesin parallel includes a main conductive path portionand a plurality of connection terminalseach configured to connect the main conductive path portionto one of electrodes of each battery. The connection terminalsinclude fuse portionsconfigured to be blown when a current equal to or higher than a predetermined value flows. When the plurality of batteriesare connected in parallel by the battery connection member, the fuse portionsare arranged in space between the main conductive path portionand the batteries

Battery connection member and battery module using the same

A battery pack includes a plurality of battery modules including a plurality of cellsaligned and accommodated in a case, wherein a battery assemblyin which the plurality of cellsare aligned in a row is used as a unit, and the multiple ones of the battery assemblyare aligned in each battery module. The battery modules are a first battery modulein which the plurality of battery assembliesare aligned in parallel and second battery modulesA,B in which the plurality of battery assembliesare aligned in series, and the first battery moduleand the second battery modulesA,B are combined with each other to form the battery pack.

The casehousing a plurality of cellsis divided, by a circuit boardprovided at the same sides of the cells, into a housing spacehousing the cellsand an exhaust ductfor releasing a gas from the ventsof the cellsto outside the caseThe ventsof the cellscommunicate with the exhaust ductthrough openingsformed in the flat plate. The exhaust ductis divided into a first spaceand a second spaceby a partitionprovided between the flat plateand an external plateof the case. The first spacecommunicates with the second spacethrough through holesformed in the partition

Battery module

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.

Battery block and battery module

A battery moduleincludes a plurality of batteries aligned and accommodated in a housing, wherein each batteries has an opening portionat an electrode portionof the battery to release gas generated in the battery outside the battery, the housingis partitioned by a circuit boarddisposed in contact with battery casesaround the electrode portionsof the batteries into a storage portionin which the batteries are stored, and an exhaust chambervia which the gas released from the opening portionof the electrode portionis exhausted outside the housing, the electrode portionsof the batteries are connected to a connectoron the circuit board, and the opening portionsof the electrode portionsare in communication with the exhaust chambervia through holesin the circuit board

Battery module and battery pack using the same

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

Battery and battery unit

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

Assembled battery and battery module

In a battery module including a plurality of batteriesstored in a housing, each of the batteriesincludes an electrode portionprotruding from a battery case, a baseA is arranged on a side of the electrode portionsso that the baseA is in contact with the battery cases, and the electrode portionsare inserted in through holesprovided in the baseA. Connection portionsconnected to the electrode portionsare formed on upper surfaces of the electrode portions. A connection terminalfor connecting the batteriesin parallel is formed in a region on the baseA in which the connection terminaldoes not cover the through holes. The connection terminalis connected to the connection portionsby fusible linksA straddling the through holes

Disclosed is an objective lens driving apparatus having a holder holding an objective lens and connected to a base through at least four linear members such that the holder can be moved both in the focussing direction and in the tracking direction orthogonal to the focussing direction through the flexing of the linear members Undesirable local resonance can be suppressed due to the use of the linear members in support of the holder

Objective lens driving apparatus for optical disc player

In an objective lens driving unit, an objective lens (12) is fixed to a coil bobbin (11), which has a focus drive coil (13a) wound therearound with its axis coaxial with the axis of the objective lens (12) and tracking dive coils (13b, 13c) wound thereon with their axes perpendicular with the axis of the objective lens (12), and the focus drive coil (13a) and the tracking drive coils (13b, 13c) are put in an open magnetic field produced by a magnetic yoke (14) having permanent magnets (15a, 15b), which makes magnetic flux to cross the coils, thereby to drive the objective lens (12); thus the size of the unit is decreased and made light, and further, the weight of the moving part is made light, to boost sensitivity thereby.

Objective lens driving unit

Disclosed herein is an optical information reproducing apparatus having a phase difference tracking system which is free from an influence of a tangential phase difference of output signals from a photodetector. The photodetector comprises first through fourth photocells which are respectively disposed at first through fourth quadrants defined by a first straight line parallel to an information track image and a second straight line perpendicular to the first straight line. Output signals of the first and second photocells are delayed for a specified time by respective first and second delaying circuits. Output signals of the first delaying circuit and the third photocell are added by a first adder, and output signals of the second delaying circuit and the fourth photocell are added by a second adder. A phase comparator produces a tracking error signal from a phase difference between output signals of the first and second adders. Alternatively, a first phase comparator produces a phase difference between the output signals of the first and second photocells, and/or a second comparator produces a phase difference between the output signals of the third and fourth photocells. At least one of output signals of the first and second comparator is used for producing a tracking error signal.

Growing community of inventors

Nara, Japan

Toshiki Itoi