BATTERY COOLING DEVICE FOR ELECTRIC VEHICLE
FIG2 is an enlarged view of an essential part of FIG1 (first embodiment)
As shown in FIG2, twelve cooling medium jackets 14 for cooling the battery modules 13 are disposed on a bottom wall of the battery case 12 side by side as two, that is, left and right, lines with their longitudinal direction along the vehicle width direction, and one battery module 13 is disposed on each of the cooling medium jackets 14. A cooling medium supply piping 15 and a cooling medium discharge piping 16 are disposed in parallel with each other along the center line of the battery case 12, and an inner end part in the vehicle width direction of the cooling medium jacket 14 is connected to the cooling medium supply piping 15 and the cooling medium discharge piping 16. The six pairs of cooling medium jackets 14 have a basically identical structure apart from the details, and the structure of one thereof is explained below as an example.
enlarged view
14
cooling medium jackets cooling medium jacket
22
cover member
16
cooling medium discharge piping
15
cooling medium supply piping
13
battery module battery modules
['6. A battery cooling device for an electric vehicle comprising a battery (13) that is for driving the electric vehicle, a battery case (12) that supports the battery (13), a cooling medium jacket (14) that is formed integrally with the battery case (12) and has a cooling medium passage (14a, 14b) in an interior of the cooling medium jacket (14), a cooling medium supply piping (15) that supplies cooling medium to the cooling medium jacket (14), and a cooling medium discharge piping (16) that discharges cooling medium from the cooling medium jacket (14), wherein the cooling medium supply piping (15) and the cooling medium discharge piping (16) are disposed in a fore-and-aft direction in a middle part in a vehicle width direction of a vehicle body, a plurality of cooling medium jackets (14) as said cooling medium jacket (14) extend toward opposite sides in the vehicle width direction from the cooling medium supply piping (15) and the cooling medium discharge piping (16), and the cooling medium passage (14a, 14b) returns in an outer end part in the vehicle width direction of the cooling medium jacket (14).']