Power supply apparatus for vehicle

Abstract

The invention provides a power supply apparatus for a vehicle, wherein the rigidity and the cooling performance of the support plate which supports and cools the battery modules. The support plate 11 supports the battery modules and includes a first plate (15) and a second plate (14). The first plate (15) thermally contacts bottom surfaces of the battery modules. The second plate (14) is placed on a bottom surface of the first plate to define cooling spaces where a coolant flows. The first reinforcing projections (14c, 14d) project into the cooling spaces and extend in in a flow direction of the coolant. The plurality of second reinforcing projections (15d) is provided on a top surface of the first plate (15) and extending in a direction crossing the flow direction of the coolant. Rigidity against bending of the support plate in two directions can be secured by the first reinforcing projections and the second reinforcing projections, and the first reinforcing projections projecting into the cooling spaces extend in the flow direction of the coolant, and the second reinforcing projections project out of the cooling spaces, and the second reinforcing projections (15d) project out of the cooling spaces. Therefore the first and second reinforcing projections do not interfere with the flow of the coolant, thereby securing the cooling performance.

Description

technical field [0001] The present invention relates to a power supply device for a vehicle, wherein a support plate for supporting a plurality of battery modules constituted by an aggregate of a plurality of battery cells includes a first plate and a second plate, the first plate and the battery module The bottom surface of the second plate is in thermal contact with the bottom surface of the first plate, and the lower surface of the second plate and the first plate are overlapped to define a cooling space for cooling medium to flow between the second plate and the first plate. Background technique [0002] Patent Document 1 below discloses a technology in which a support plate supporting a battery pack member includes a heat sink that is in thermal contact with the lower surface of the battery pack member, and a partition wall that is bonded to the lower side of the heat sink. A cooling passage through which cooling air flows is defined between the heat sink and the heat s...

AI Technical Summary

Problems solved by technology

[0006] In the invention described in the aforementioned Patent Document 1, it is considered that the cooling fins provided on the lower surface of the radiator parallel to the flow direction of the cooling air and the fins provided on the upper surface of the partition wall in a direction perpendicular to the flow direction of the cooling air The ribs function as the above-mentioned reinforcing protrusions, but the ribs block the flow of the cooling air and protrude into the cooling passage, so the smooth flow of the cooling air is hindered by the ribs, resulting in a problem that the cooling performance is reduced.

When the direction of the rib is made parallel to the flow direction of the cooling air in order to avoid the above, the direction of the cooling fins of the radiator is the same as the direction of the rib, so there is a possibility that the rigidity can only be improved for a bending load in a specific direction. problem of effect

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