Abstract: A power conversion device includes an element module, a condenser, a case, a cooler, a positive terminal and a negative terminal on a primary side, and a positive terminal and a negative terminal on a secondary side. The case accommodates the element module, the condenser, and the case. The element module and the condenser are disposed on a surface side of the cooler. The power conversion device includes a secondary side positive electrode bus bar and a secondary side negative electrode bus bar that are connected between the positive terminal and negative terminal on the secondary side and the condenser. The secondary side positive electrode bus bar and the secondary side negative electrode bus bar are arranged on the surface side of the cooler.

Abstract: A power conversion device includes an element module, a condenser, a case, a cooler, a positive terminal and a negative terminal on a primary side, and a positive terminal and a negative terminal on a secondary side. The case accommodates the element module, the condenser, and the case. The element module and the condenser are disposed on a surface side of the cooler. The power conversion device includes a secondary side positive electrode bus bar and a secondary side negative electrode bus bar that are connected between the positive terminal and negative terminal on the secondary side and the condenser. The secondary side positive electrode bus bar and the secondary side negative electrode bus bar are arranged on the surface side of the cooler.

Abstract: An onboard battery includes battery modules each containing battery cells, a housing case that houses the battery modules, and an air intake duct configured to send cooling air into the modules. Of the battery modules, at least two are disposed apart from each other in a vertical direction and at least two are disposed apart from each other in a front-rear direction. Cooling air is taken into the battery modules from rear via the air intake duct. Cooling air taken into the battery modules is emitted to an internal space of the housing case. A rear portion of the housing case is provided with an exhaust hole configured to let out cooling air emitted from the battery modules to the internal space. Of emission flows of cooling air emitted from the battery modules, the emission flow of cooling air from at least one of the modules disposed most forward is the largest.

Abstract: An onboard battery includes battery modules each containing battery cells, a housing case that houses the battery modules, and an air intake duct configured to send cooling air into the modules. Of the battery modules, at least two are disposed apart from each other in a vertical direction and at least two are disposed apart from each other in a front-rear direction. Cooling air is taken into the battery modules from rear via the air intake duct. Cooling air taken into the battery modules is emitted to an internal space of the housing case. A rear portion of the housing case is provided with an exhaust hole configured to let out cooling air emitted from the battery modules to the internal space. Of emission flows of cooling air emitted from the battery modules, the emission flow of cooling air from at least one of the modules disposed most forward is the largest.