Abstract: The battery module includes a plurality of cells serving as cylindrical secondary batteries; and a temperature regulator configured to regulate a temperature of the cells, wherein the cells are aligned with their side surfaces adjacent to each other, all the cells are electrically connected to each other in series, the temperature regulator includes a heat transferring member, and a heat dissipation member, the heat transferring member includes a plurality of insertion portions inserted into space surrounded by the side surfaces of the plurality of cells, and a base portion facing lower surfaces of the cells, at least a part of the heat transferring member which faces the cells is made of an electrically insulative substance, and the cells connected to each other in series are isolated from each other by the heat transferring member in a liquid-tight manner at the side surfaces and bottom surfaces of the cells.

Abstract: In a battery module including a plurality of batteries 40 stored in a housing, each of the batteries 40 includes an electrode portion 16 protruding from a battery case 5, a base 30A is arranged on a side of the electrode portions 16 so that the base 30A is in contact with the battery cases 5, and the electrode portions 16 are inserted in through holes 36 provided in the base 30A. Connection portions 320 connected to the electrode portions 16 are formed on upper surfaces of the electrode portions 16. A connection terminal 32 for connecting the batteries 40 in parallel is formed in a region on the base 30A in which the connection terminal 32 does not cover the through holes 36. The connection terminal 32 is connected to the connection portions 320 by fusible links 320A straddling the through holes 36.

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: The temperature adjusting unit (5) is made of a resin-molded article in which a first flat portion (73), a second flat portion (75), and a side wall portion (77) are integrally formed. A holding portion (81) and a flow path (85) are separated by the side wall portion (77). Each cell (21) is held in close contact with the holding portion (81) separated by the side wall portion (77).

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 (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: In a battery module including a plurality of batteries 40 stored in a housing, each of the batteries 40 includes an electrode portion 16 protruding from a battery case 5, a base 30A is arranged on a side of the electrode portions 16 so that the base 30A is in contact with the battery cases 5, and the electrode portions 16 are inserted in through holes 36 provided in the base 30A. Connection portions 320 connected to the electrode portions 16 are formed on upper surfaces of the electrode portions 16. A connection terminal 32 for connecting the batteries 40 in parallel is formed in a region on the base 30A in which the connection terminal 32 does not cover the through holes 36. The connection terminal 32 is connected to the connection portions 320 by fusible links 320A straddling the through holes 36.

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: 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.

Abstract: 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.

Abstract: Disclosed is an objective lens driving apparatus having a holder 9 holding an objective lens 1 and connected to a base 17 through at least four linear members 13, such that the holder 9 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 13. Undesirable local resonance can be suppressed due to the use of the linear members 13 in support of the holder 9.