New energy automobile heat management system capable of utilizing waste heat fully

Abstract

The invention relates to a new energy automobile heat management system capable of utilizing waste heat fully. The system comprises a water pump, a water heating PTC, a warm air core, a heat regenerator, a cooler, a power battery, a CDU, a motor cooler, a water-cooling condenser, a heat radiator and an expansion water tank, two ends of the water heating PTC and the heat radiator are connected witha bypass water pipe, a refrigerating heat exchange unit is arranged between the cooler and the water-cooling condenser, and an air conditioning evaporator is arranged in the refrigerating heat exchange unit and parallelly connected with the coolers. Compared with the prior art, the system has the advantages that battery waste heat, motor waste heat and waste heat generated by work consumption ofa compressor can be utilized effectively for passenger cabin air conditioner heating, defrosting, demisting and battery heating , and power demand of the water heating PTC is lowered effectively, so that energy consumption of a heat management system is reduced, and driving mileage of a new energy automobile is increased.

Description

technical field [0001] The invention belongs to the technical field of new energy vehicles, and in particular relates to a thermal management system for a new energy vehicle that fully utilizes waste heat. Background technique [0002] Under the macro background of building a low-carbon, energy-saving economy, the development of new energy vehicles is the general trend. However, with the continuous improvement of battery energy density and customers' demand for fast charging rate, safety problems caused by thermal problems of new energy vehicles occur frequently. The thermal management system of new energy vehicles is indispensable and requires continuous technical improvement; The energy saving of the management system also needs to be improved. [0003] Patent CN106585414A discloses an intelligent multi-circuit electric vehicle cooling system, and patent CN107097664A discloses an intelligent multi-circuit electric vehicle thermal management system. Form a thermal managem...

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Problems solved by technology

[0005] However, the thermal management system disclosed in the above-mentioned patents does not fully utilize waste heat, such as waste heat from batteries, waste heat from motors, and heat generated by compressor power consumption, which are directly discharged into the environment, resulting in waste of energy.

The current heat pump technology cannot work effectively in an environment below -20°C due to technical limitations, and the system is too complicated and the cost is high

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