Abstract: The power supply device includes a plurality of battery cells each having a rectangular outer shape, a plurality of separators configured to insulate adjacent battery cells, and a restraining member assembling the plurality of battery cells and the plurality of separators. Each of separators includes interposed plate disposed between adjacent battery cells, heat insulating member having a sheet-like shape and disposed between interposed plate and adjacent battery cells, peripheral wall protruding from interposed plate toward adjacent battery cells and defining a housing space housing adjacent battery cells, and a plurality of ribs provided inside peripheral wall. The plurality of ribs holds heat insulating member.

Abstract: A power supply device includes: battery block formed by stacking a plurality of battery cells in a thickness with separator interposed therebetween; a pair of end plates disposed on both end surfaces of battery block; and binding bar connected to the pair of end plates and configured to fix battery block in a pressurized state via end plates. Separator includes an elastic plate made of a plastic foam including open cells on a surface of the separator or as a whole.

Abstract: Power supply device includes: battery stack in which a plurality of battery cells each having electrode terminal formed on a top surface thereof are stacked; a pair of end plates respectively covering end surfaces in a stacking direction of battery stack; fastening member that fastens the pair of end plates to each other; and insulating member interposed between a side surface of battery stack and fastening member. Insulating member has groove extending in a stacking direction of battery stack on a surface facing battery stack.

Abstract: A power supply device includes: battery block formed by stacking a plurality of battery cells in a thickness with separator interposed therebetween; a pair of end plates disposed on both end surfaces of battery block; and binding bar connected to the pair of end plates and configured to fix battery block in a pressurized state via end plates. Separator is formed by stacking elastomer layer and plastic foam layer having a larger amount of deformation with respect to a pressing force than elastomer layer.

Abstract: A power supply device includes: battery block formed by stacking a plurality of battery cells in a thickness with separator interposed therebetween; a pair of end plates disposed on both end surfaces of battery block; and binding bar that is coupled to the pair of end plates and fixes battery block in a pressurized state via end plates. Separator is made of elastomer having a comb-like shape in cross-sectional view, in which a plurality of rows of parallel ridges and a plurality of rows of parallel grooves are alternately disposed on a surface of plate-shaped part facing battery cell.

Abstract: There is provided a battery system including parallel-connected bus bars each connecting the plurality of prismatic battery cells in parallel, and a safety mechanism configured to be capable of interrupting a current path of prismatic battery cells connected in parallel by the parallel-connected bus bars, where the sealing plate of one of the prismatic battery cells convexly deforms due to a rise in an internal pressure of this prismatic battery cell when an abnormality occurs, the sealing plate that has convexly deformed comes into contact with the parallel-connected bus bars to form external short circuitry between the electrode terminals that are positive and negative of one prismatic battery cell connected in parallel to the prismatic battery cell with the abnormality, and external short circuitry activates the safety mechanism that interrupts a current flowing into the prismatic battery cell with the abnormality.

Abstract: A power source device includes: a plurality of battery cells each including exterior can formed in a rectangular shape and including opposing main surfaces; insulating heat-shrinkable films covering the plurality of battery cells, respectively; a plurality of separators interposed between the plurality of battery cells; a battery stack formed by stacking the plurality of battery cells with separators interposed therebetween; a pair of end plates disposed on both end surfaces of the battery stack; and a plurality of bind bars disposed on each of opposing side surfaces of the battery stack and fastening the end plates to each other, wherein heat-shrinkable films have expandability in which a maximum expansion amount in a heat-shrunk state is larger than a maximum expansion amount of main surfaces of exterior can at the time of expansion of battery cells.

Abstract: A power supply device includes a plurality of battery cells each having a prismatic exterior can, heat-shrinkable films having insulating property and each covering one of the plurality of battery cells, a plurality of separators interposed between the plurality of battery cells, a battery stack constituted by the plurality of battery cells stacked with separators interposed between the plurality of battery cells, a pair of end plates disposed on both end faces of the battery stack, and a plurality of bind bars disposed on side surfaces, facing opposite directions, of the battery stack to fasten the end plates to each other, where an edge of an end edge of each separator is broken.

Abstract: A short circuit current interruption method of a battery system including: stacking a plurality of prismatic battery cells and connecting the plurality of prismatic battery cells with a parallel connection bus bar in parallel to form a battery block, wherein a sealing plate of the prismatic battery cell is a plate material having flexibility that deforms when an internal pressure rises due to an internal short circuit, and when a rise in the internal pressure due to the internal short circuit of the prismatic battery cell causes deformation, the deformation of the sealing plate is detected, and when an amount of deformation exceeds a setting value, the short circuit current of the battery connected in parallel with the internally short circuited battery is interrupted.

Abstract: A power supply device includes a battery block in which a plurality of battery cells are stacked in a thickness with separator interposed therebetween, a pair of end plates disposed on both end surfaces of the battery block, and a binding bar coupled to the pair of end plates and fixing a battery block in a pressurized state via the end plates. Separator includes heat insulating sheet in which a gap of a fiber sheet is filled with silica aerogel, and rubbery elastic sheet stacked on a surface of heat insulating sheet.

Abstract: A power supply device has end plates disposed at both ends of a battery block in which a plurality of battery cells and separator are stacked and connected by a binding bar. Separator includes heat insulating sheet including a fiber sheet and silica aerogel, and rubber-like elastic sheets stacked on a surface of heat insulating sheet. Furthermore, separator is provided with stacked region where rubber-like elastic sheets are stacked and non-stacked region where rubber-like elastic sheets are not stacked.

Abstract: In order to suppress sucking of dew condensation water due to the capillary phenomenon while achieving downsizing of the power supply device, a power supply device according to an aspect of the present invention includes a plurality of battery cells (1) having a flat right-angled parallelepiped shape and a plurality of separators insulating adjacent ones of the plurality of battery cells (1). Each of the plurality of separators includes heat insulating sheet (24) arranged between adjacent one of the plurality of battery cells and an adjacent cell adjacent to the one of the plurality of battery cells among the plurality of battery cells (1), and insulating molded member (22) holding heat insulating sheet (24).

Abstract: To achieve both formability and heat insulating properties, separator according to an aspect of the present invention insulates adjacent battery cells. Separator includes heat insulation sheet including a fiber material and a heat insulation material including higher heat insulating properties than the fiber material, and formed member including higher shape stability than the heat insulation sheet. This enables shape of heat insulation sheet including high flexibility to be maintained using formed member formed into a predetermined shape.

Abstract: To improve reliability of a battery module, battery module (1) includes battery stack (2) having a plurality of batteries (14) stacked, each battery (14) having a top surface provided with an output terminal, restraining member (12) that has flat portion (54) extending along side surfaces of the plurality of batteries (14) in stacking direction (X) of batteries (14) and restrains the plurality of batteries (14), and side separator (10) that has first portion (50) interposed between each battery (14) and flat portion (54) and insulates each battery (14) from flat portion (54). Each battery (14) is disposed with gap (G) from first portion (50), the gap being large enough to suppress movement of water (W) due to capillarity.

Abstract: The power supply device includes a plurality of battery cells each having a rectangular outer shape, a plurality of separators configured to insulate adjacent battery cells, and a restraining member assembling the plurality of battery cells and the plurality of separators. Each of separators includes interposed plate disposed between adjacent battery cells, heat insulating member having a sheet-like shape and disposed between interposed plate and adjacent battery cells, peripheral wall protruding from interposed plate toward adjacent battery cells and defining a housing space housing adjacent battery cells, and a plurality of ribs provided inside peripheral wall. The plurality of ribs holds heat insulating member.

Abstract: The power supply device includes a plurality of battery cells each having a square outer shape, a plurality of separators for insulating the adjacent battery cells, and a restraining member that assembles the plurality of battery cells and the plurality of separators. Each of separators has heat insulating properties. Further, each of separators is disposed between the plurality of battery cells. Further, each of separators includes contact portion that comes into contact with adjacent battery cell, and thin portion formed thinner than contact portion.

Abstract: Fixing structure of cell module is fixing structure of cell module, cell module including: cell stack with a plurality of cells stacked; a pair of end plates that are disposed at both ends of cell stack as viewed in stacking direction X of cells; and restraint member that engages with the pair of end plates to sandwich the plurality of cells. Fixing structure includes: fixing portion that fixes cell module to fixing object to which cell module is to be fixed; and reduction mechanism that reduces a stress generated on fixing portion due to a dimensional change of cells.

Abstract: There is provided a battery system including parallel-connected bus bars each connecting the plurality of prismatic battery cells in parallel, and a safety mechanism configured to be capable of interrupting a current path of prismatic battery cells connected in parallel by the parallel-connected bus bars, where the sealing plate of one of the prismatic battery cells convexly deforms due to a rise in an internal pressure of this prismatic battery cell when an abnormality occurs, the sealing plate that has convexly deformed comes into contact with the parallel-connected bus bars to form external short circuitry between the electrode terminals that are positive and negative of one prismatic battery cell connected in parallel to the prismatic battery cell with the abnormality, and external short circuitry activates the safety mechanism that interrupts a current flowing into the prismatic battery cell with the abnormality.

Abstract: A short circuit current interruption method of a battery system including: stacking a plurality of prismatic battery cells and connecting the plurality of prismatic battery cells with a parallel connection bus bar in parallel to form a battery block, wherein a sealing plate of the prismatic battery cell is a plate material having flexibility that deforms when an internal pressure rises due to an internal short circuit, and when a rise in the internal pressure due to the internal short circuit of the prismatic battery cell causes deformation, the deformation of the sealing plate is detected, and when an amount of deformation exceeds a setting value, the short circuit current of the battery connected in parallel with the internally short circuited battery is interrupted.

Abstract: An airbag for storage at an inner side of the backrest in a vehicle width direction includes a lower folded portion made by folding a lower area of the airbag that is to be situated at a lower side of vehicle upon inflation and deployment, an upper folded portion made by folding an upper area of the airbag that is to be situated at an upper side of vehicle upon the inflation and deployment, and a middle folded portion made by folding a middle area of the airbag that is to be situated between the lower area and the upper area upon the inflation and deployment, wherein the middle folded portion is a roll-folded portion such that a face of the airbag facing away from the inner side upon the inflation and deployment faces inward in the roll-folded portion, the roll-folded portion having the upper folded portion wrapped therein.