New energy electric vehicle waste heat energy storage type air-conditioning system based on solution dehumidification and method thereof

Abstract

The invention discloses a new energy electric vehicle waste heat energy storage type air-conditioning system based on solution dehumidification and a method thereof. The air-conditioning system comprises a primary return air solution dehumidification system, an air-conditioning refrigerant circulation system and a waste heat energy storage solution regeneration system. Heat dissipated by batteries of an electric vehicle is absorbed by a phase-change material, and thus the heat dissipation effect of the batteries can be improved, and the temperature of the battery pack can be effectively controlled. By means of the phase-change energy storage technology, heat of condensation and the heat dissipated by the batteries can be efficiently recycled and controllably output, waste heat utilization is achieved, and the overall energy consumption of the electric vehicle is reduced. Through the solution dehumidification technology, separation between a dehumidification link and a temperature control link is achieved, dehumidification is conducted without the need for decreasing the temperature of air to the dew point temperature or below, and the temperature control load of the air-conditioning system is greatly reduced. Through a primary return air mode, fresh air and return air are mixed, so that air quality is guaranteed, and the temperature control load of the air-conditioning system is reduced. Meanwhile, a dehumidification solution can be regenerated repeatedly, and the service life is long.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a solution dehumidification-based waste heat energy storage air conditioning system for new energy electric vehicles and a method thereof. Background technique [0002] With the world facing the severe situation of energy shortage and environmental pollution, the energy and environment pressure brought by the traditional automobile industry is increasing. At present, the country is vigorously promoting the development of new energy vehicles, which will help improve my country's current energy consumption structure. Due to the rise and improvement of new power supply technologies such as lithium batteries, sodium-sulfur batteries, nickel-cadmium batteries, and fuel cells, electric vehicles have broad market prospects. [0003] Due to the complex chemical reactions inside the electric vehicle power battery, a large amount of heat will be released during charging and disc...

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Problems solved by technology

[0003] Due to the complex chemical reactions inside the electric vehicle power battery, a large amount of heat will be released during the charging and discharging process. If the heat cannot be dissipated in a timely and stable manner, the battery will be overheated or even damaged, endangering the safety of the car.

At present, the two main heat dissipation methods, water cooling and air cooling, have weak adaptability to the external environment, resulting in poor heat dissipation stability of the battery pack.

[0004] At present, the car air conditioner mainly adopts the traditional mechanical refrigeration method, which consumes a lot of energy and has low energy utilization rate. The air quality in the car is poor under full return air, and a large amount of heat energy is dissipated in the environment.

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