Computing method for heat management available power, heat management controller and heat management system

Abstract

The invention provides a computing method for the heat management available power, a heat management controller and a heat management system. The heat management system comprises the heat management controller, the heat management controller uses the computing method to compute the heat management available power under the limiting working condition, computing of the drive available power is comprehensively considered while the heat management available power is computed through the computing method, and the heat management available power adopts a first-order low-pass filtering algorithm, and the size of the filtering parameters depends on that of the drive demanded power variation rate; and the drive available power limit coefficient adopts a PI algorithm, and the parameter P and the parameter I vary from the difference value of the drive available power and the actual drive power. By adoption of the computing method provided by the invention, under the limiting working condition, on the basis of the condition that the vehicle security requirement is met, driveability can be ensured to a largest extent, and power battery over discharge is avoided.

Description

technical field [0001] The invention relates to the technical field of hybrid electric vehicles, in particular to a calculation method for thermal management available power, a thermal management controller and a thermal management system. Background technique [0002] Energy crisis, environmental pollution and greenhouse effect are becoming more and more serious, making new energy vehicles an inevitable trend in the transformation of the automotive industry. Hybrid electric vehicles have the advantages of high efficiency, energy saving, long mileage and strong power, and have attracted extensive attention from scientific research institutions and enterprises. How to allocate the available power for thermal management is the key to improving the economy and driving performance of hybrid electric vehicles Factors have become one of the focuses of research in the field of hybrid vehicles. [0003] When a hybrid electric vehicle is in a working condition where the driver needs...

AI Technical Summary

Problems solved by technology

[0003] When a hybrid electric vehicle is in a working condition where the driver needs more power, it is necessary to maximize the use of power battery energy to meet the power and safety requirements of the vehicle as much as possible, while at the same time avoiding battery performance and life attenuation caused by over-discharge , therefore, how to optimize the thermal management available power calculation method of HEVs under extreme conditions has become a technical problem to be solved urgently by those skilled in the art

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