To inhibit a heat generating part from suddenly increasing temperature even when some abnormality occurs on a cooling passage in which a refrigerant circulates.SOLUTION: A cooling structure includes: a wall part 45 erected along a circulation direction of a refrigerant on a passage of the refrigerant for cooling heat generating parts 21, 31; two cooling parts W1, W2 which are a part of the passage, are arranged adjacently to each other across a wall part 45 and cool the heat generating parts 21, 31 different from each other; openings 51A, 51B which penetrate the wall part 45 and communicate the two cooling parts W1, W2 adjacent to each other; and bimetal type covers 52A, 52B which are formed in a shape capable of closing the openings 51A, 51B and whose one end is fixed to an edge part of the openings 51A, 51B and other end side is opened and closed. The covers 52A, 52B close the openings 51A, 51B when the temperature of the refrigerant is lower than a predetermined threshold temperature Tth, and are curved to open the openings 51A, 51B when the temperature of the refrigerant is equal to or higher than the threshold temperature Tth.SELECTED DRAWING: Figure 3
【課題】冷媒が循環する冷却通路上において何らかの異常が生じた場合であっても発熱部の急激な温度上昇を抑制する。【解決手段】冷却構造は、発熱部21,31を冷却する冷媒の流路上において冷媒の流通方向に沿って立設された壁部45と、流路の一部であって、壁部45を隔てて隣接配置され、異なる発熱部21,31を冷却する二つの冷却部W1,W2と、壁部45に貫設され、隣接する二つの冷却部W1,W2を連通させる開口51A,51Bと、開口51A,51Bを閉塞可能な形状に形成され、開口51A,51Bの縁部に対して一端が固定されるとともに他端側が開閉するバイメタル式のカバー52A,52Bと、を備える。カバー52A,52Bは、冷媒の温度が所定の閾値温度Tth未満であるときに開口51A,51Bを閉塞し、冷媒の温度が閾値温度Tth以上であるときに湾曲して開口51A,51Bを開放する。【選択図】図3
COOLING STRUCTURE AND ELECTRIC VEHICLE
冷却構造及び電動車両
2020-06-04
Patent
Electronic Resource
Japanese
IPC: | H01L Halbleiterbauelemente , SEMICONDUCTOR DEVICES / H05K PRINTED CIRCUITS , Gedruckte Schaltungen / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |