Dry ice jet cooling and cold and heat supply combined system of electric vehicle driving mechanism

Through the dry ice jet cooling and hot and cold supply combined system, using carbon dioxide circulating working fluid, the high heat flux density cooling problem of electric vehicle drive mechanism is solved, cooling in summer and heating in winter are achieved, and energy utilization and system efficiency are improved.

CN120716451APending Publication Date: 2025-09-30TIANJIN UNIV OF COMMERCE
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Patent Information

Application Number
CN202511101116.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-07
Publication Date
2025-09-30

AI Technical Summary

Technical Problem

Existing air-cooling and liquid-cooling technologies are difficult to meet the high heat flux density cooling requirements of electric vehicle drive mechanisms, and the thermal management system of electric vehicles is inefficient in cooling in summer and heating in winter.

Method used

A combined dry ice jet cooling and heating and cooling system is adopted, with carbon dioxide as the circulating working fluid. The drive mechanism is cooled by the heat absorption of dry ice sublimation, and the heat of the compressor's high-temperature exhaust is recovered for winter heating. Combined with the vehicle's heat exchanger, cooling in summer and heating in winter are achieved.

Benefits of technology

The cooling efficiency and energy utilization rate of the electric vehicle drive mechanism are improved, and air conditioning cooling in summer and heating in winter are realized. The system is simple, safe, reliable, energy-saving and environmentally friendly.

✦ Generated by Eureka AI based on patent content.
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Abstract

The invention provides a dry ice jet cooling and cold and heat supply combined system for an electric vehicle driving mechanism. The dry ice jet cooling and cold and heat supply combined system comprises a compressor unit, a heat exchanger outside a compartment, a heat exchanger inside the compartment, a heat regenerator and a gas-liquid separator. An outlet of the compressor unit is simultaneously connected with the heat exchanger outside the compartment and the heat exchanger inside the compartment, the other connectors of the heat exchanger outside the compartment and the heat exchanger inside the compartment are respectively and simultaneously connected with an in-pipe inlet and a shell side outlet of the heat regenerator, and an in-pipe outlet of the heat regenerator is connected with a gas-liquid two-phase fluid inlet of the gas-liquid separator through an expansion valve. A gas outlet of the gas-liquid separator is connected with the compressor unit, a liquid outlet of the gas-liquid separator is connected with the nozzle, and the nozzle extends into the electric automobile driving mechanism. According to the technical scheme, the driving mechanism of the electric automobile is cooled through sublimation heat absorption of the dry ice, meanwhile, air conditioner cooling in the automobile in summer is achieved through residual cold generated by sublimation of the dry ice, and heat generated by high-temperature exhaust of the compressor is recycled for heating in the automobile in winter.
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