Abstract: A fuel cell stack formed by stacking a plurality of power generation cells together in a vehicle width direction and a voltage control unit including a voltage controller and a control case are mounted in a front box of a fuel cell vehicle. The control case is joined to a stack case in a manner that the control case is provided adjacent to the stack case in a direction perpendicular to the stacking direction of the plurality of power generation cells. A cell voltage detection unit is provided between the fuel cell stack and a voltage control unit.

Abstract: An electric power conversion device is provided with a case (60) which includes: a first member (61) having a first region (73) defining therein a first passage (78, 79) in which a cooling medium flows, and a second region (74) disposed on a side of the first region; and a second member (88) disposed so as to at least partly overlap with the second region as seen from a direction orthogonal to the second region in a spaced apart relationship to the second region, and internally defining a second passage (91) connected to the first passage. A reactor (31) is positioned in the first region, and a switching device (33) is positioned on the surface of the second member facing away from the first member while a capacitor (35) is positioned between the second member and the second region of the first member.

Abstract: A fuel cell stack formed by stacking a plurality of power generation cells together in a vehicle width direction and a voltage control unit including a voltage controller and a control case are mounted in a front box of a fuel cell vehicle. The control case is joined to a stack case in a manner that the control case is provided adjacent to the stack case in a direction perpendicular to the stacking direction of the plurality of power generation cells. A cell voltage detection unit is provided between the fuel cell stack and a voltage control unit.

Abstract: A seal structure includes a seal member interposed between a first surface and a second surface opposing each other to communicate a first passage opening at the first surface and a second passage opening at the second surface in a sealed condition, at least one of the first surface and the second surface being provided with a drain hole. The seal member includes a first seal portion defining an inner opening corresponding to the first passage and the second passage, a second seal portion surrounding the first seal portion and including an extended portion extending away from the first seal portion, and a connecting portion connecting the first seal portion and the second seal portion to each other, the connecting portion defining an opening communicating with the drain hole.

Abstract: An electric power conversion device is provided with a case (60) including a mounting portion (61) extending along a plane defined by a first direction and a second direction that are orthogonal to each other, and a side wall (62) provided along a periphery of the mounting portion, a primary side connection portion (23) and a secondary side connection portion (27) provided on the case, a plurality of reactors arranged along the second direction in the case and connected in parallel to one another, and a switching unit including a plurality of switching devices positioned in the case on one side of the reactors in the first direction, arranged along the first direction, and respectively connected to the reactors.

Abstract: An electric power conversion device is provided with a case (60) which includes: a first member (61) having a first region (73) defining therein a first passage (78, 79) in which a cooling medium flows, and a second region (74) disposed on a side of the first region; and a second member (88) disposed so as to at least partly overlap with the second region as seen from a direction orthogonal to the second region in a spaced apart relationship to the second region, and internally defining a second passage (91) connected to the first passage. A reactor (31) is positioned in the first region, and a switching device (33) is positioned on the surface of the second member facing away from the first member while a capacitor (35) is positioned between the second member and the second region of the first member.

Abstract: An electric power conversion device is provided with a case (60) including a mounting portion (61) extending along a plane defined by a first direction and a second direction that are orthogonal to each other, and a side wall (62) provided along a periphery of the mounting portion, a primary side connection portion (23) and a secondary side connection portion (27) provided on the case, a plurality of reactors arranged along the second direction in the case and connected in parallel to one another, and a switching unit including a plurality of switching devices positioned in the case on one side of the reactors in the first direction, arranged along the first direction, and respectively connected to the reactors.

Abstract: A capacitor unit includes a casing, a heat sink, a heat radiation sheet, and a notch. The casing accommodates the capacitors. The casing includes a positive electrode terminal block and a negative electrode terminal block. The heat sink is provided on the casing in a stacking direction. The heat radiation sheet is made of insulation material and is sandwiched in the stacking direction between the casing and the heat sink to cover the positive electrode terminal block and the negative electrode terminal block. The notch is provided in at least one of the casing and the heat radiation sheet between the negative electrode terminal block and the positive electrode terminal block. The notch passes through the at least one of the casing and the heat radiation sheet along a plain substantially perpendicular to the stacking direction to separate the negative electrode terminal block and the positive electrode terminal block.

Abstract: A capacitor arrangement structure includes a casing, a housing, and a heat sink. The casing accommodates a capacitor. The casing includes a casing bottom. The housing includes a bottom wall. The housing has a height from the bottom wall which includes an inner surface and an outer surface opposite to the inner surface in a height direction. The casing is mounted on the inner surface so that the casing bottom opposes a mounting surface in the inner surface. The heat sink includes a heat sink top. The heat sink is provided on the outer surface of the bottom wall not to overlap the casing viewed along the height direction. The heat sink top opposes the outer surface. A distance between the casing bottom and the mounting surface in the height direction is smaller than a distance between the heat sink top and the mounting surface in the height direction.

Abstract: A capacitor arrangement structure includes a casing, a housing, and a heat sink. The casing accommodates a capacitor. The casing includes a casing bottom. The housing includes a bottom wall. The housing has a height from the bottom wall which includes an inner surface and an outer surface opposite to the inner surface in a height direction. The casing is mounted on the inner surface so that the casing bottom opposes a mounting surface in the inner surface. The heat sink includes a heat sink top. The heat sink is provided on the outer surface of the bottom wall not to overlap the casing viewed along the height direction. The heat sink top opposes the outer surface. A distance between the casing bottom and the mounting surface in the height direction is smaller than a distance between the heat sink top and the mounting surface in the height direction.

Abstract: A capacitor unit includes a casing, a heat sink, a heat radiation sheet, and a notch. The casing accommodates the capacitors. The casing includes a positive electrode terminal block and a negative electrode terminal block. The heat sink is provided on the casing in a stacking direction. The heat radiation sheet is made of insulation material and is sandwiched in the stacking direction between the casing and the heat sink to cover the positive electrode terminal block and the negative electrode terminal block. The notch is provided in at least one of the casing and the heat radiation sheet between the negative electrode terminal block and the positive electrode terminal block. The notch passes through the at least one of the casing and the heat radiation sheet along a plain substantially perpendicular to the stacking direction to separate the negative electrode terminal block and the positive electrode terminal block.

Abstract: A fuel cell electric automobile includes a fuel cell stack, a traction motor, a first control device for controlling output of the fuel cell stack, and a second control device for controlling electrical energy supplied to the traction motor. The first control device is provided vertically above the fuel cell stack, and the second control device is provided vertically below the fuel cell stack and on a lateral side of the traction motor.

Abstract: A fuel cell electric automobile includes a fuel cell stack, a traction motor, a first control device for controlling output of the fuel cell stack, and a second control device for controlling electrical energy supplied to the traction motor. The first control device is provided vertically above the fuel cell stack, and the second control device is provided vertically below the fuel cell stack and on a lateral side of the traction motor.

Abstract: A semiconductor module cooler includes a fin which is a heat sink, which is thermally connected to a semiconductor element, and which has one or more notches in an edge at one or more arbitrary positions in a longitudinal direction and one or more convex ribs which are formed on a bottom of a water jacket having a cooling flow path and which fit into the one or more notches at one or more arbitrary positions. By doing so, the efficiency of transferring heat generated by the semiconductor element by a coolant is improved and cooling performance is improved.

Abstract: A semiconductor module cooler includes a fin which is a heat sink, which is thermally connected to a semiconductor element, and which has one or more notches in an edge at one or more arbitrary positions in a longitudinal direction and one or more convex ribs which are formed on a bottom of a water jacket having a cooling flow path and which fit into the one or more notches at one or more arbitrary positions. By doing so, the efficiency of transferring heat generated by the semiconductor element by a coolant is improved and cooling performance is improved.