PROBLEM TO BE SOLVED: To provide a cooling device which regulates a supply amount of a refrigerant to a proper level and effectively cools an electric power conversion circuit.SOLUTION: A cooling device 1 cools an electric power conversion circuit 2 which converts direct current power supplied from a direct current power source in a vehicle into alternating current power for driving an alternating current rotary electric machine 3. The cooling device 1 includes: a heat exchange part 11 which conducts heat exchange with the electric power conversion circuit 2; a cooling pump 12 which supplies a refrigerant to a refrigerant passage formed in the heat exchange part 11; rotation number detection means 15 which detects a rotation number of the alternating current rotary electric machine 3; and a control circuit 13 which controls operation of the cooling pump 12. The control circuit 13 controls the operation of the cooling pump 12 to change an amount of the refrigerant supplied to the refrigerant passage according to the rotation number detected by the rotation number detection means 15.
【課題】冷媒の供給量を適正化し、電力変換回路を効果的に冷却することができる冷却装置を提供すること。【解決手段】冷却装置1は、車両における直流電源から供給される直流電力を、交流回転電機3を駆動させるための交流電力に変換する電力変換回路2を冷却するものである。冷却装置1は、電力変換回路2と熱交換を行う熱交換部11と、熱交換部11の内部に形成された冷媒流路に冷媒を供給する冷却ポンプ12と、交流回転電機3の回転数を検出する回転数検出手段15と、冷却ポンプ12の運転を制御する制御回路13とを備えている。制御回路13は、回転数検出手段15によって検出された回転数に応じて、冷却ポンプ12の運転を制御し冷媒流路への冷媒の供給量を変化させる。【選択図】図1
COOLING DEVICE OF ELECTRIC POWER CONVERSION CIRCUIT
電力変換回路の冷却装置
2015-11-24
Patent
Electronic Resource
Japanese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen |
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