A shift control method for a mechanical automatic transmission of a pure electric vehicle

Abstract

The invention discloses a mechanical automatic transmission control module of a pure electric vehicle and a gearshift control method. The mechanical automatic transmission control module comprises a BDI (basic driver interface) layer and an ACS (advanced control strategy) layer, wherein the BID layer is connected with the ACS layer through an API (application program interface); the BDI layer is used for initializing hardware, driving each module in a TCU (transmission control unit) and providing an API calling function for the outside; the ACS layer is used for an upper layer control strategy and completion of gear position decision, start and shift functions, and comprises a Sensor module, a Strategy module and an Actuator module. A comprehensive gearshift rule used for the pure electric vehicle and based on load correction is developed for calculation of optimal power performance, an optimal economic gearshift rule and loads of the pure electric vehicle, so that the vehicle is always in optimal gear position and traveling states and the optimal power performance and economy of the vehicle are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of electric vehicle control, and in particular relates to a control module and a shift control method of a mechanical automatic transmission of a pure electric vehicle with a permanent magnet drive motor. Background technique [0002] At present, in the field of shift optimization of automatic transmissions of transportation vehicles, mechanical automatic transmissions realize automatic shifting operations on the basis of mechanical transmissions. It not only has the characteristics of low price and convenient manufacture, but also has automatic operation, high safety and reliability, etc. advantage. At this stage, the research on the traditional vehicle automatic transmission theory and shifting rules has been quite mature; however, the comprehensive control of pure electric vehicle mechanical automatic transmissions related to permanent magnet drive motors is rare, and the transmission control is easily af...

AI Technical Summary

Problems solved by technology

At this stage, the research on the traditional vehicle automatic transmission theory and shifting rules has been quite mature; however, the comprehensive control of pure electric vehicle mechanical automatic transmissions related to permanent magnet drive motors is rare, and the transmission control is easily affected by the complex driving environment of the vehicle. The impact of variability, often the control effect is not satisfactory

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