Constant-speed cruise control method and device for composite power split hybrid electric vehicle

Abstract

The invention provides a constant-speed cruise control device for a composite power split hybrid electric vehicle. The constant-speed cruise control device comprises a monitoring module, an algorithm module, an actuator module and a sound and light module, wherein the monitoring module is electrically connected with the algorithm module; the algorithm module is respectively connected with the actuator module and the sound and light module through a CAN bus. The invention further provides a constant-speed cruise control method for the composite power split hybrid electric vehicle. The constant-speed cruise control method comprises the following steps: when the vehicle is in a non-cruise driving state, reading relevant information in the monitoring module; when cruise driving conditions are met, sending out a cruise instruction according to driver operation, enabling the vehicle to be ready to enter cruise driving and calculating cruise demand torque; judging whether to enter a hybrid power cruise mode or a pure electric cruise mode or not according to the cruise demand torque as well as a power battery pack SOC. The constant-speed cruise control device provided by the invention has the benefits that no additional device is required to be arranged, a device on a vehicle system is directly utilized, the cost is reduced, and the space is saved; the method is simple to operate and has wide application values.

Description

Technical field [0001] The invention relates to a constant speed cruise control method and device of an automobile, in particular to a constant speed cruise control method and device of a compound power split hybrid electric automobile. Background technique [0002] With the increase in car ownership, traditional cars are facing problems such as energy shortages, environmental pollution, and increasingly stringent emission regulations. Hybrid vehicles, as a transition from traditional internal combustion engines to pure electric vehicles, are currently solving energy shortages and environmental pollution. The most practical technical route to the problem, which has the advantages of long cruising range, good power, low emissions and low energy consumption, does not require the construction of ground charging stations, and is the most likely to be industrialized at this stage. Another serious social problem brought about by the increase in car ownership is the frequent occurrence ...

AI Technical Summary

Problems solved by technology

The existing cruise control technology is either designed based on the traditional internal combustion engine system (need to add an independent cruise control unit and actuator), or is designed for the control algorithm of the series and parallel hybrid system (due to the different mechanisms of the power system, the cooperative control algorithm cannot be used in compound power-split hybrid electric vehicles), so the constant-speed cruise control technology for traditional vehicle power systems and series-parallel hybrid systems cannot meet the needs of compound power-split hybrid electric vehicle cruise control

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