Abstract: A bus bar includes a first connection portion, a second connection portion, a first extending portion, and a second extending portion. The first connection portion is connected to a first electronic component directly or via a connection component. The second connection portion is connected to a second electronic component directly or via a connection component. The first extending portion extends from the first connection portion in a direction different from a direction from the first connection portion toward the second connection portion at a shortest distance. The first extending portion includes a first portion connected to the first connection portion and a second portion located on a side opposite to the first portion with respect to the second connection portion in an extending direction of the first extending portion. The second extending portion extends from the second portion of the first extending portion in a direction approaching the second connection portion.

Abstract: A method for manufacturing an electrical connection unit includes fixing a metal component to a connection target component using a first fastening member to form an assembly in which the connection target component and the metal component are integrated, and electrically connecting the connection target component to a bus bar by fixing the metal component included in the assembly to the bus bar using a second fastening member after forming the assembly.

Abstract: An electrical connection unit includes: a first member; a second member; a first electronic component; a second electronic component; a first bus bar; a metal member; and a first heat conduction member. The first bus bar includes a first end, a second end, and an extending portion. The extending portion has a plate shape and extends along the first member. The metal member is disposed on a side opposite to the second member with respect to the first member. The first heat conduction member is disposed between the extending portion and the metal member. The first heat conduction member has a smaller outer shape than an outer shape of the extending portion. The first heat conduction member overlaps the extending portion at a position deviated to a side that is closer to a first end than a center of the extending portion.

Abstract: An electrical connection unit is an electrical connection unit adjacent to a cooling unit at least when mounted on a vehicle, and includes a first routing structure, a metal member, one or more electronic components, and a first heat transfer member. The first routing structure includes one or more routing members and faces the cooling unit. The metal member includes a first plate portion located on a side opposite to the cooling unit with respect to at least a part of the first routing structure, and a protruding portion protruding from the first plate portion in a first direction from the first plate portion toward the cooling unit. The one or more electronic components are disposed between the first routing structure and the first plate portion. The first heat transfer member is located between a tip of the protruding portion and the cooling unit.

Abstract: A method of manufacturing an electrical connection unit according to an embodiment includes: a first step of assembling a first structure; and a second step of attaching the first structure to a rigid member after assembling the first structure. The first structure includes a plurality of first electronic components, a first routing member, and a support. The first routing member electrically connects at least one first electronic component included in the plurality of first electronic components. The support supports the plurality of first electronic components or the first routing member. The rigid member covers the plurality of first electronic components and the first routing member.

Abstract: An electrical connection unit includes an interposing portion, a first circuit including a first electronic component and disposed on a first side in a first direction with respect to the interposing portion, and a second circuit including a second electronic component and disposed on a second side in the first direction with respect to the interposing portion.

Abstract: The electrical connection unit according to an embodiment includes a rigid member, a first structure, and a second structure. At least a main portion of the first structure is disposed on a first side of the rigid member. The first structure is supported by the rigid member. At least a main portion of the second structure is disposed on a second side of the rigid member. The second structure is supported by the rigid member. The first structure includes a plurality of first electronic components, a first routing member, and a support. The first routing member is electrically connected to at least one first electronic component included in the plurality of first electronic components. The support supports the plurality of first electronic components or the first routing member. The second structure includes a plurality of second electronic components, a second routing member, and a cover member.

Abstract: An electrical connection unit includes a heat transfer portion, a first circuit, and a second circuit. The first circuit includes a bus bar and a first electronic component electrically connected to the bus bar and is disposed on a first side in a first direction with respect to the heat transfer portion. The second circuit includes a second electronic component and is disposed on a second side in the first direction with respect to the heat transfer portion.

Abstract: An electrical connection unit is an electrical connection unit adjacent to a cooling unit at least when mounted on a vehicle, and includes a first routing structure, a first metal member, one or more electronic components, and a second metal member. The first routing structure includes one or more routing members and faces the cooling unit. The first metal member includes a first plate portion located on a side opposite to the cooling unit with respect to at least a part of the first routing structure. The one or more electronic components are disposed between the first plate portion and the first routing structure. The second metal member is disposed between the first plate portion and the first routing structure, and forms at least a part of a heat transfer path thermally connecting the first plate portion to the cooling unit.

Abstract: One embodiment provides an electrical connection unit capable of improving heat radiation performance while realizing high-density mounting. An electrical connection unit of one embodiment is an on-vehicle electrical connection unit including a base portion, a first routing member that has a first extension portion extending in a direction intersecting the base portion and forms an energization path in a first direction intersecting the base portion, and a second routing member that has a thermal load larger than that of the first routing member, has a second extension portion extending in a direction intersecting the base portion, and forms an energization path in the first direction, wherein the first extension portion is inclined at a first angle with respect to the base portion, and wherein the second extension portion is inclined at a second angle smaller than the first angle with respect to the base portion.

Abstract: An electrical connection unit includes a first electronic component, a bus bar, and a metal portion. The bus bar includes a plate portion and is electrically connected to the first electronic component. The metal portion faces the bus bar in a first direction that is a thickness direction of the plate portion, is thermally connected to the bus bar, and has a thickness that is two times or more the thickness of the plate portion in the first direction.

Abstract: An electrical connection unit includes a heat dissipation member, a first electronic component, a first heat transfer member, a second electronic component, and a second heat transfer member. The first electronic component is disposed on a first side of the heat dissipation member. The first heat transfer member is disposed on a first side of the first electronic component and is configured to be disposed between the first electronic component and an external cooler. The second electronic component is disposed on a second side of the heat dissipation member. The second heat transfer member is disposed between the second electronic component and the heat dissipation member.

Abstract: An electrical connection unit includes a first bus bar and a metal component. At least a part of the first bus bar has a plate shape. The metal component is disposed between the first bus bar and a connection target component that is an electronic component or a second bus bar. The metal component electrically connects the first bus bar and the connection target component. At least a part of the metal component has a thickness larger than a plate thickness of the first bus bar.

Abstract: A bus bar includes a plate portion. A surface of the plate portion has a heat dissipation structure including at least either of a plurality of recesses and a plurality of protrusions.

Abstract: A fastening member of an electrical connection unit includes a shaft, a base portion, and a heat storage portion. The shaft is inserted into a first attachment hole of a first member and a second attachment hole of a second member in a state in which the first attachment hole and the second attachment hole overlap each other in a first direction. The shaft has a screw thread. When a direction intersecting the first direction is a second direction, a width of the base portion in the second direction is larger than a width of the shaft. The base portion faces the first member or the second member in the first direction. The heat storage portion is provided on a side opposite to the shaft with respect to the base portion. The heat storage portion is formed integrally with the base portion.

Abstract: An electrical connection unit includes a rigid member, a first electronic component, a first base member, a first bus bar, a second electronic component, a second base member, and a second bus bar. The rigid member includes a first region and a second region. The first electronic component faces the first region in a first direction. The first base member faces the first region in the first direction, includes a flat surface portion, and has an insulating property. The second electronic component faces the second region in the first direction, and has a smaller amount of heat generation than the first electronic component. The second base member faces the second region in the first direction, has a three-dimensional structure thicker than the first base member in the first direction, and has an insulating property.

Abstract: An electrical connection unit includes an electronic component, a first bus bar, a base member, a rigid member, and a first heat transfer member. The first bus bar is electrically connected to a first terminal of the electronic component. The base member supports the first bus bar. The rigid member faces the base member. The first heat transfer member is disposed between the rigid member and the first bus bar and has elasticity. The rigid member includes a first fixing portion to which the base member is fixed and a second fixing portion to which the electronic component is fixed. When viewed from a first direction from the base member toward the rigid member, a part of the first heat transfer member is located on a straight line connecting the first fixing portion and the second fixing portion.

Abstract: An electrical connection unit includes a first electronic component, an insulating base member, a first bus bar supported by the base member and electrically connected to the first electronic component, a metal plate facing the base member with a gap S1 between the metal plate and the base member, and a heat transfer member disposed between the first bus bar and the metal plate. The base member has a first vent port and a second vent port. In a case where a direction from the base member toward the metal plate is a first direction and a direction intersecting the first direction is a second direction, the following relationship is established. The first vent port penetrates the base member in the first direction, and a distance between the first vent port and the first electronic component is shorter than a distance between the first vent port and an end of the base member in the second direction.

Abstract: A connection component connects a bus bar to a connection target component. The connection component includes a first portion extending in a first direction, a second portion extending in a second direction intersecting the first direction, from one end of the first portion in the first direction, faces the bus bar in the first direction, and is fixed to the bus bar, and a heat dissipation structure connected to the first and second portions. The first portion has a first attachment hole facing the connection target component, and the second portion has a second attachment hole penetrating the second portion in the first direction and faces the bus bar. The heat dissipation structure includes at least one fin extending in the first and second directions, and the fin is connected to the first portion and to a portion away from the second attachment hole in the second portion.

Abstract: An electrical connection unit includes a first electronic component, a connection target component, a third electronic component, a first bus bar, a second bus bar, a heat dissipation member, a first heat transfer member, and a second heat transfer member. The first electronic component has a first terminal and a second terminal. The third electronic component has a greater amount of heat generation than the connection target component. the first bus bar electrically connects the first terminal of the first electronic component and the connection target component. the second bus bar electrically connects the second terminal of the first electronic component and the third electronic component. The heat dissipation member faces the first bus bar and the second bus bar. The first heat transfer member is disposed between the first bus bar and the heat dissipation member.