Efficient integrated active heat management system for electric vehicle

Abstract

The invention discloses an efficient integrated active heat management system for an electric vehicle. The system comprises an oil-cooled lubrication-type electromechanical coupling system, an oil-cooled integrated high-pressure integrated controller, an oil-cooled power battery system, a composite heating and cooling air-conditioning system based on a high-efficiency heat pump, a central heat exchanger system, a modular air-cooling system, a switchable loop system and a control device. By switching the controlled pipelines, various heat-generating components operate at a suitable temperaturewhen the vehicle is at a low temperature. The waste heat is fully utilized and is introduced into a power battery pack and the vehicle interior for heating, thereby shortening the running time of a heat pump air conditioning system and a PTC heater and reducing heating power consumption. The preheating time is shortened, which is conducive to the health of the power battery. The heat is dischargedat high temperature to ensure that the respective heating parts operate at the suitable temperature. Through the multi-loop active switching form, the temperature of each component is in an optimal section, and the waste heat is transferred and released to the required components, thereby realizing the high efficiency, flexibility and the energy saving of the heat management system.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to an efficient integrated active thermal management system for electric vehicles. Background technique [0002] With the large-scale promotion and application of electric vehicles, many problems have been exposed one by one. The driving range of pure electric vehicles has not always reached the ideal goal. . The reason is mainly two aspects 1: first, the available capacity of the power battery will decrease in low temperature environment; second, the power consumption of the vehicle is high when the vehicle is heated at low temperature, which seriously affects the driving range. How to efficiently insulate the battery and reduce the power consumption of low-temperature heating is the key problem we need to solve, which involves the improvement of the design of the vehicle's thermal management. [0003] In traditional thermal management systems, the power battery circuit...

AI Technical Summary

Problems solved by technology

The reason is mainly two aspects 1: first, the available capacity of the power battery will decrease in low temperature environment; second, the power consumption of the vehicle is high when the vehicle is heated at low temperature, which seriously affects the driving range

After the electric heater is turned on in winter, the mileage of the vehicle will be seriously affected, which is also a key issue restricting the promotion and application of electric vehicles in alpine regions

[0005] In the traditional automotive power battery thermal management system, the battery temperature is often low during low-temperature cold start. After the cold start, the battery needs to be heated quickly with high power. aging

[0006] In order to improve the low-temperature adaptability of electric vehicles, some manufacturers use fuel heaters to increase the temperature of the coolant, so as to take into account the heating of the low-temperature vehicle interior and battery insulation, but this will not only increase the cost of the vehicle, but also affect the layout and safety of the vehicle. Sexual design poses new challenges, while also failing to achieve zero emissions

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