Extended-range electric vehicle power coupling thermal control system and control method thereof

Abstract

The invention discloses an extended-range electric vehicle power coupling thermal control system and a control method thereof, and the system comprises four cooling liquid loops which are an engine heating loop, an engine heat dissipation loop, a power battery heating loop and a power battery heat dissipation loop in sequence. The engine heating loop comprises an engine, a first electronic thermostat, a first electric water pump and a first temperature sensor which are sequentially connected in series; the engine heat dissipation loop comprises an engine, a first electronic thermostat, a heat exchanger, a first radiator, a first electric water pump and a first temperature sensor which are sequentially connected in series. The power battery heating loop comprises a power battery, a second electronic thermostat, a heat exchanger and a second electric water pump which are sequentially connected in series; the power battery heat dissipation loop comprises a power battery, a second electronic thermostat, a second radiator, a second electric water pump and a second temperature sensor. According to the system, rapid preheating and accurate temperature control of the power battery and the engine are realized, and the energy utilization rate of the whole vehicle is effectively improved.

Description

technical field [0001] The invention relates to the technical field of thermal management control of a hybrid electric vehicle, in particular to a power coupling thermal control system and a control method for an extended-range electric vehicle. Background technique [0002] At present, the climate and environmental situation is becoming increasingly severe, fossil energy is increasingly scarce, and emission regulations are becoming increasingly stringent. The development of new energy vehicles has become a mainstream trend. Pure electric vehicles have an advantage in the development of new energy vehicles due to their zero-emission characteristics. Due to the bottleneck in the development of battery technology, pure electric vehicles have problems such as mileage anxiety and low environmental adaptability, which are more serious in low temperature environments. Extended-range electric vehicles have become a promising solution in the short term. From the analysis of vehicl...

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Problems solved by technology

[0011] The technical problem to be solved by the present invention is the problem of imperfect performance and application of the existing range-extended electric vehicle power system coupling thermal management system

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