Integrated modularized whole vehicle thermal management system

Abstract

The invention relates to the technical field of new energy automobiles, in particular to an integrated modular finished automobile thermal management system. The system comprises an air conditioning box provided with a warm air core body; the refrigeration circulation loop comprises a compressor, a first heat exchanger and a second heat exchanger; the compressor, the first heat exchanger and the second heat exchanger circularly communicate to form a first refrigeration branch; the cooling circulation loop comprises a motor electric controller and a battery; the outlet of the motor electric controller, the second heat exchanger, the battery and the inlet of the motor electric controller are circularly communicated; an outlet of the first heat exchanger, the warm air core and an inlet of the first heat exchanger are circularly communicated; the refrigeration circulation loop circularly exchanges heat with the cooling circulation loop through the first heat exchanger and the second heat exchanger. According to the system, the thermal comfort of the passenger compartment can be guaranteed, the battery can be efficiently heated, meanwhile, waste heat electrically controlled by the motor can also be used for heating the passenger compartment, the system structure is more simplified, the integration degree is higher, the system can be applied to wider scenes, and the comprehensive efficiency of the system is also greatly improved.

Description

technical field [0001] The present application relates to the technical field of new energy vehicles, in particular to an integrated modular vehicle thermal management system. Background technique [0002] The heat source of the conventional thermal management system is the air source, and the system uses the external heat exchanger as an evaporator to absorb the heat of the external environment in a low temperature environment, and then release heat to the passenger compartment. However, when the system operates in an external environment with low temperature and high humidity for a long time, because the surface temperature of the external heat exchanger is much lower than the ambient temperature, it is easy to form frost and ice, and the heating performance of the system will decrease. Even if the general system configuration has a defrost mode, when the system enters the defrost mode, the performance has dropped to a certain level, and the heating capacity has decreased....

AI Technical Summary

Problems solved by technology

However, when the system operates in a low-temperature and high-humidity external environment for a long time, because 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 there is a defrosting mode in the general system configuration, when the system enters the defrosting mode, the performance has dropped to a certain level, and the heating capacity is reduced

In addition, the defrosting cycle of the external heat exchanger of the thermal management system based on the air source is relatively short, the defrosting operation is frequent, the heating stability is poor in low temperature environments, and the heating of the passenger compartment is difficult to guarantee

At the same time, due to the consideration of the heating performance in low temperature environment, the size of the external heat exchanger of the conventional system is relatively large, and the front-end module needs to arrange the external heat exchanger, the number of components increases, and the design matching workload is relatively large

[0003] Conventional thermal management systems use electrical control waste heat recovery in many scenarios and are limited to heating the passenger compartment. Generally, they cannot be directly used to heat the battery alone. When the battery and the passenger compartment need to be heated at the same time, the temperature of the air outlet from the passenger compartment fluctuates greatly, providing thermal comfort. sex is difficult to guarantee

Secondly, when there is only a low-load heating demand for the battery, it is necessary to turn on the high-pressure water heater, which increases the power consumption of the system

[0004] Moreover, the refrigerant side of the conventional thermal management system is complicated, and there are many valves used for throttling, on-off, and flow control functions. When the user’s differentiated functional requirements are met, the configuration of the refrigerant side of the system changes too much. Based on the complex refrigerant side cycle The compatibility of the integrated modular scheme is also poor

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