Multi-loop cooperative type vehicle thermal management system and multi-mode operation method

Through the application of a multi-loop collaborative vehicle thermal management system and CO2 refrigerant, efficient energy regulation and waste heat recovery of the electric bus thermal management system are achieved, solving the problems of energy waste and poor coordination in the existing system, and improving the lifespan and ride comfort of the three-electric system.

CN120680897APending Publication Date: 2025-09-23JIANGSU CHUANGYUAN SONGZHI NEW ENERGY VEHICLE AIR CONDITIONING CO LTD
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Patent Information

Application Number
CN202511067710.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-31
Publication Date
2025-09-23

AI Technical Summary

Technical Problem

The subsystems of the existing electric bus thermal management system operate independently and lack coordination, resulting in energy waste and shortened vehicle range, and unable to meet the multi-dimensional temperature control needs of the three-electric system, cockpit and passenger compartment.

Method used

A multi-loop collaborative vehicle thermal management system is adopted, including a heat pump system, a cold water system and a hot water system. Through the valve switching of the hot and cold cores and the ATS cooling unit, flexible adjustment of the cold and heat amount and the secondary heat exchange circuit design are realized. Combined with the use of CO2 refrigerant, efficient energy transfer and waste heat recovery are achieved.

Benefits of technology

It improves the energy utilization efficiency of the vehicle's thermal management system, reduces energy consumption, increases the service life and ride comfort of the three-electric system, and reduces the system's environmental risks and failure probability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a multi-loop cooperative whole vehicle thermal management system and a multi-mode operation method.The multi-loop cooperative whole vehicle thermal management system comprises a heat pump system, a cold water system, a hot water system, a cold and hot core body and an electric control and motor ATS cooling unit, and the heat pump system comprises a compressor, an air cooler, an evaporator and a refrigerant circulation loop communicating all the components; the heat pump system is connected with the cold water system through the evaporator and connected with the hot water system through the air cooler. The cold and hot core body is selectively communicated with a cold water system or a hot water system through valve switching; the electric control and motor ATS cooling unit can be switched through a valve and selectively communicate with the first secondary refrigerant loop so as to achieve cold and heat interaction with a secondary refrigerant of the cold water system, and / or an independent circulation pipeline can be formed so that heat can be directly discharged to the environment outside the vehicle through an ATS heat exchanger of the independent circulation pipeline. Through integrated linkage of the heat pump, the cold water system and the hot water system and in combination with the secondary heat exchange loop design, efficient energy transfer is achieved.
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