| CPC B60H 1/00885 (2013.01) [B60H 1/00664 (2013.01); B60H 1/00807 (2013.01); B60K 11/04 (2013.01); B60K 11/085 (2013.01); B60H 2001/00307 (2013.01); B60H 2001/00928 (2013.01)] | 17 Claims |
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1. A thermal management system for a vehicle, the thermal management system comprising:
a first cooling circuit configured to cool power electronic (PE) parts mounted in the first cooling circuit and including:
a first radiator;
a first coolant line connecting the power electronic (PE) parts and the first radiator, wherein a coolant is circulated through the first coolant line between the first radiator and the PE parts; and
a first electric water pump configured to circulate the coolant along the first coolant line;
a heat pump system including:
a compressor configured to compress a refrigerant;
an internal condenser configured to perform a heat exchange between the refrigerant compressed by the compressor and air supplied to an interior of the vehicle;
a refrigerant line connecting the compressor and the internal condenser and configured to circulate the refrigerant between the compressor and the internal condenser; and
a heat exchanger configured to perform the heat exchange between the coolant and the refrigerant;
a flow increase bypass line fluidically connecting an upstream point and a downstream point of the PE parts on the first coolant line;
a coolant control valve provided at a location where the flow increase bypass line is branched off in the first coolant line and configured to control a flow direction of the coolant so that the coolant selectively passes or bypasses the PE parts;
a second cooling circuit including a second coolant line configured to circulate a coolant between the heat exchanger and a second radiator and a second electric water pump configured to circulate the coolant along the second coolant line,
wherein the first cooling circuit further includes a first temperature sensor configured to detect a temperature of the coolant having passed through the PE parts in the first coolant line, and
wherein the controller electrically connected to the first temperature sensor is configured to control the circulation of the coolant in the first cooling circuit according to the temperature of the coolant detected by the first temperature sensor and an outside air temperature detected by an outside air temperature sensor electrically connected to the controller, and
wherein when the controller concludes that the temperature of the coolant detected by the first temperature sensor is higher than a sum of the outside air temperature and a first setting temperature, the controller electrically connected to a first bypass valve is configured to drive the first electric water pump, and to open the first bypass line by controlling the first bypass valve, so that a heat exchange between the coolant that has cooled the PE parts and the refrigerant that has passed through the internal condenser is performed while the coolant passes through the heat exchanger, and the coolant having passed through the heat exchanger is circulated by bypassing the first radiator.
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