SEALED BATTERY, BATTERY PACK AND BATTERY FOR ENGINE IGNITION
FIG4 is a schematic top view of an assembled battery or a battery for engine starting according to one embodiment of the present invention  FIG3 is a schematic sectional view of the sealed battery according to one embodiment of the present invention
The assembled battery 50 according to the present embodiment or the battery 51 for engine starting according to the present embodiment may be constituted by a plurality of sealed batteries 40. For example, the assembled battery 50 and the battery 51 for engine starting can be formed by connecting a plurality of sealed batteries 40a to 40d in series as in the assembled battery 50 (battery 51 for engine starting) shown in FIG4. For example, in the assembled battery 50 (battery 51 for engine starting) shown in FIG4, an external connection section 15a of the sealed battery 40a may be connected to an external connection section 14b of the sealed battery 40b. An external connection section 15d of the sealed battery 40d may be connected to a battery connection terminal 37b of a device. At least a part of the conduction sections 20 and 21 included in the first sealed battery 40 may be directly in contact with the outer surface of the case 1 included in the second sealed battery 40. Alternatively, at least a part of the conduction sections 20 and 21 included in the first sealed battery 40 may be indirectly in contact with the outer surface of the case 1 included in the second sealed battery 40 with the intermediate layer 35 therebetween. With this configuration, even if the first sealed battery 40 is discharged with a large current and the first lead terminal 8 or the second lead terminal 9 generates heat, the generated heat from the lead terminal 8 or 9 can be dissipated to the case 1 of the second sealed battery 40. For example, a conduction section of a lead terminal 9d of the sealed battery 40d included in the assembled battery 50 (battery 51 for engine starting) shown in FIG4 can be provided to be directly or indirectly in contact with the outer surface of the case 1 of the adjacent sealed battery 40c. Further, at least a part of the conduction sections 20 and 21 included in the first sealed battery 40 may be sandwiched between the first sealed battery 40 and the second sealed battery 40.  The conduction sections 20 and 21 can be provided, for example, to in contact with the outer surface of the case 1 indirectly with the intermediate layer 35 therebetween as in the sealed battery 40 shown in FIG3. The intermediate layer 35 can be provided to be in direct contact with the outer surface of the case, and to be in direct contact with the conduction sections 20 and 21.
schematic sectional view, schematic view
24
positive-electrode current collector
23
positive-electrode active material layer
14
external connection section external connection sections
50
assembled battery
26
negative-electrode active material layer
33
adhesive layers adhesive layer
3
positive electrode positive electrodes
['1. A sealed battery comprising: an electrode assembly including a positive electrode, a negative electrode, and a separator; an electrolyte; a case which contains the electrode assembly and the electrolyte; a first lead terminal; and a second lead terminal, wherein each of the first lead terminal and the second lead terminal comprises an electrode connection section which is connected to the positive electrode or the negative electrode inside the case, an external connection section positioned outside the case, and a sealing section to which the case is bonded via an adhesive layer, the first lead terminal or the second lead terminal comprises a conduction section serving as a conduction path between the sealing section and the external connection section, the conduction section is provided to be at least partially in contact with an outer surface of the case directly or provided to be at least partially in contact with the outer surface of the case indirectly via an intermediate layer, the case has a conductivity or an apparent thermal conductivity of from 10 W/(m·K) to 250 W/(m·K) inclusive, and the electrode assembly and the electrolyte contained in the case have an effective thermal conductivity of from 10 W/(m·K) to 100 W/(m·K) inclusive in a steady state.', '9. An assembled battery comprising a plurality of the sealed batteries according to any one of claims 1 to 8, wherein the external connection section included in a first sealed battery is electrically connected to the external connection section included in a second sealed battery.']