Case for film-covered electrical device and film-covered electrical device assemblage
View Patent ↗The cell case ( 10 ) of the present invention includes first cooling channel wall surfaces ( 13 c ) and second cooling channel wall surfaces ( 13 d ) that form a cooling channel ( 13 A) through which cooling air flows for cooling a film-covered battery ( 1 ); wherein the area of the opening of a portion that is the outlet ( 13 b ) of cooling channel ( 13 A) is greater than the area of the opening of the portion that is the inlet ( 13 a ) of the cooling channel ( 13 A).
1. An assembly comprising a film-covered electrical device in which electrical device components that can charge and discharge electricity are covered by a film and comprising a case for the film-covered electrical device that is composed of two frames for housing the film-covered electrical device, and further, comprising in either one of said frames a gas exhaust passage portion for guiding to the outside gas that has been expelled from a gas exhaust part provided in said film of said film-covered electrical device; wherein:
inner surfaces are formed on opposing surfaces of said frames that confront each other, said inner surfaces clasping heat-seal parts of the periphery of said film that have been heat-sealed in said heat-seal parts, and wherein unevenness is provided on the outer surfaces that are the surfaces on the opposite sides of said inner surfaces;
when stacking with other cases for film-covered electrical devices, an inlet and an outlet of cooling channel through which cooling air flows that is supplied from the outside for cooling said film-covered electrical device are formed between said outer surfaces of said frames and the frames of said other cases for film-covered electrical devices;
said wall surfaces of said cooling channel include: side walls of said exhaust passage portion, said frames, the surfaces of said film-covered electrical devices in said case for film-covered electrical devices, and surfaces of said other film-covered electrical devices inside said other cases for film-covered electrical devices; and
the area of the opening of said outlet is greater than the area of the opening of said inlet, and moreover, comprising an area in which the flow path profile of said cooling channel becomes larger with progression from said inlet and toward said outlet.
2. A film-covered electrical device assemblage comprising two or more of the assembly according to claim 1 and realized by stacking two or more cases for the film-covered electrical devices that house said film-covered electrical devices.