Abstract: A battery pack may include a component housed in a case. The component may include an adhesion projection and a first guide projection projecting from a bottom surface of the component. The first guide projection may include: a first portion overlapping the adhesion projection; and a second portion not overlapping the first portion. A projection degree of the first portion may be greater than or equal to a projection degree of the adhesion projection. The second portion may include an inclined portion, wherein a projection degree of the inclined portion increases toward the first portion so that a projection degree of the second portion increases from a value lower than the projection degree of the adhesion projection to a value greater than or equal to the projection degree of the adhesion projection. An end surface of the adhesion projection may be adhered to the inner surface.

Abstract: A battery pack may include a tray, a cover, a connection member connecting a peripheral portion of the tray to a peripheral portion of the cover with a clearance provided therebetween, and a sealant filling the clearance. The connection member may include a spacer disposed in a range between the peripheral portion of the tray and the peripheral portion of the cover. The spacer may include first to third portions respectively having first to third cross-sectional areas. The second cross-sectional area may be smaller than the first and third cross-sectional areas. The first portion may be disposed at a position that is in contact with the peripheral portion of the tray. The third portion may be disposed at a position that is in contact with the peripheral portion of the cover. The second portion may be disposed between the first portion and the third portion.

Abstract: A battery pack may include a component housed in a case. The component may include an adhesion projection and a first guide projection projecting from a bottom surface of the component. The first guide projection may include: a first portion overlapping the adhesion projection; and a second portion not overlapping the first portion. A projection degree of the first portion may be greater than or equal to a projection degree of the adhesion projection. The second portion may include an inclined portion, wherein a projection degree of the inclined portion increases toward the first portion so that a projection degree of the second portion increases from a value lower than the projection degree of the adhesion projection to a value greater than or equal to the projection degree of the adhesion projection. An end surface of the adhesion projection may be adhered to the inner surface.

Abstract: A battery pack may include a tray, a cover, a connection member connecting a peripheral portion of the tray to a peripheral portion of the cover with a clearance provided therebetween, and a sealant filling the clearance. The connection member may include a spacer disposed in a range between the peripheral portion of the tray and the peripheral portion of the cover. The spacer may include first to third portions respectively having first to third cross-sectional areas. The second cross-sectional area may be smaller than the first and third cross-sectional areas. The first portion may be disposed at a position that is in contact with the peripheral portion of the tray. The third portion may be disposed at a position that is in contact with the peripheral portion of the cover. The second portion may be disposed between the first portion and the third portion.

Abstract: An assembled battery includes a plurality of battery cells, a bus bar that electrically connects the battery cells with each other, and a circuit board that is electrically connected with the battery cells. The bus bar has a first connection part that is electrically connected with the battery cells, and a second connection part that is electrically connected with a connection part of the circuit board via a conductive adhesive. The second connection part has a concave portion that contains the conductive adhesive.

Abstract: An assembled battery includes a plurality of battery cells, a bus bar that electrically connects the battery cells with each other, and a circuit board that is electrically connected with the battery cells. The bus bar has a first connection part that is electrically connected with the battery cells, and a second connection part that is electrically connected with a connection part of the circuit board via a conductive adhesive. The second connection part has a concave portion that contains the conductive adhesive.

Abstract: An assembled battery includes a plurality of battery cells, a bus bar that electrically connects the battery cells with each other, and a circuit board that is electrically connected with the battery cells. The bus bar has a first connection part that is electrically connected with the battery cells, and a second connection part that is electrically connected with a connection part of the circuit board via a conductive adhesive. The second connection part has a concave portion that contains the conductive adhesive.