New energy automobile thermal management system convenient to integrate

Abstract

The invention relates to a new energy automobile thermal management system convenient to integrate, comprising: a refrigerating medium loop comprising a compressor, a first heat exchanger and a heat exchange assembly which are sequentially communicated end to end, the first heat exchanger comprising a first channel and a second channel which are isolated from each other, an outlet of the compressor communicating with the first channel, and an outlet of the second channel communicating with the second channel; the two ends of the heat exchange assembly communicate with the first channel and an inlet of the compressor correspondingly. The cooling medium loop comprises a first pump and a motor electric controller, an outlet of the first pump communicates with an inlet of the motor electric controller, and an outlet of the motor electric controller and an inlet of the first pump communicate with the two ends of the second channel correspondingly. The refrigerating medium flowing through the first channel exchanges heat with the cooling medium flowing through the second channel in the first heat exchanger. The first heat exchanger is used for replacing an existing external heat exchanger, liquid-liquid heat exchange is conducted on a cooling medium and a refrigerating medium at the first heat exchanger, the heat exchange performance and efficiency are higher, the size is small, and system integration modularization is more convenient.

Description

technical field [0001] The present application relates to the technical field of new energy vehicles, in particular to a new energy vehicle thermal management system that is easy to integrate. Background technique [0002] In response to the national policy and the call for environmental protection, new energy vehicles are being vigorously developed in the market, but it also brings the problem of vehicle thermal management, resulting in many thermal management systems, including the refrigeration medium circuit and the cooling medium circuit. The conventional thermal management system in the prior art has a complex structure of the refrigeration medium circuit, many valves are used for throttling, on-off, and flow direction control functions, and many heat exchangers are used to realize the corresponding functions, and users have different functions. The refrigeration medium system of the system needs to be greatly modified when required, and the compatibility of the integr...

AI Technical Summary

Problems solved by technology

When the system operates in a low temperature and high humidity external environment for a long time, the surface temperature of the external heat exchanger is much lower than the ambient temperature, it is easy to frost and freeze, and the heating performance of the system will decrease

Even if some thermal management systems are configured with a defrost mode, when entering the defrost mode, the performance of the thermal management system has dropped to a certain level, and the heat supply capacity has decreased

In addition, the defrosting cycle of the conventional thermal management system is relatively short, the defrosting operation is frequent, the heat supply stability is poor in low temperature environments, and it is difficult to ensure the heat supply of the passenger compartment

[0004] At the same time, the thermal management system includes a front-end module located in the front cabin, and its external heat exchanger is located in the front-end module. Due to the large size of the external heat exchanger and the heavy workload of design matching, the components of the system are unified into a The difficulty of modularization is also greatly increased

The electrical control of the motor in the cooling medium circuit needs to dissipate heat. A wide range of design schemes is to install a radiator on the cooling medium circuit, connect the electric motor control and the radiator in series, and pass the flow of the cooling medium in the cooling medium circuit. The heat generated by the electronic control is carried to the radiator, and the heat is dissipated to the external environment through the radiator, resulting in a waste of waste heat from the electric control of the motor, which increases the complexity of the system structure and manufacturing cost

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