Energy-saving heating system for new energy electric vehicle and working method thereof

Abstract

The invention discloses an energy-saving heating system for a new energy electric vehicle and a working method thereof. The heating system comprises a heat dissipation device for a motor and an electronic control device, a floor heating heat supply device and a low-temperature cooling device; the heat dissipation device for the motor and the electronic control device comprises a heat dissipation circulating water pipe used for absorbing heat dissipated from the motor and the electronic control device, the floor heating heat supply device comprises a floor heating radiator arranged under the feet of a driver and passengers, the low-temperature cooling device comprises a low-temperature cooler and an electronic fan, a water inlet pipe of the floor heating radiator and a water inlet pipe of the low-temperature cooler are connected with a water outlet of the heat dissipation circulating water pipe separately, a water outlet pipe of the floor heating radiator and a water outlet pipe of thelow-temperature cooler are connected with a water inlet of the heat dissipation circulating water pipe separately, and the electronic fan is used for blowing air outside the vehicle to the surface ofthe low-temperature cooler; the heating system can utilize the heat generated by the motor and the electric control device to supply heat to the whole vehicle, the electricity consumption for heatingis reduced accordingly, and meanwhile the problems can also be solved that the distribution uniformity of the temperature in the vehicle is poor and the noise is increased.

Description

technical field [0001] The invention relates to the field of air conditioners for new energy electric vehicles, in particular to an energy-saving heating system for new energy electric vehicles and a working method thereof. Background technique [0002] There are generally two heating methods for existing new energy electric vehicles: 1. Air heating is used, and PTC heaters are used to directly heat the indoor air through the heating ventilation and air conditioning (HVAC) system; 2. Water heating is used, and PTC heating is used. The heater heats the circulating water leading to the heater core in the HVAC system, and then indirectly heats the indoor air through the heater core. [0003] The main problems of these two heating methods are: 1. Both of these two heating methods need to be realized by the HVAC system installed under the instrument panel to supply air, the temperature distribution in the vehicle compartment is relatively uniform, and the human body is not comfor...

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Problems solved by technology

[0003] The main problems of these two heating methods are: 1. Both of these two heating methods need to be realized by the HVAC system installed under the instrument panel to supply air, the temperature distribution in the vehicle compartment is relatively uniform, and the human body is not comfortable; 2. The fan in the HVAC system must be turned on during heating, which consumes electricity and increases the noise inside the car, which is not conducive to energy saving and human comfort; 3. It has not been considered to be connected with the vehicle thermal management system, using motors and electronic control devices The heat emitted by work is not conducive to energy saving

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