A new energy vehicle energy optimization method

Abstract

The invention relates to an energy optimization method for a new energy vehicle, comprising the following steps: 1) During the running of the vehicle, the vehicle controller will collect the current vehicle speed V and acceleration a in real time, combined with the driver's current input: gear position, accelerator opening Speed, driving mode and brake switch to judge the current driver's operating intention: starting, accelerating, overtaking, braking, coasting or normal driving, etc.; The corresponding relationship between speed and vehicle speed, combined with the efficiency map of the motor and engine, reasonably allocates the power of the motor and the power of the engine to ensure the highest energy utilization. The invention can improve the energy utilization efficiency of the whole vehicle, effectively increase the mileage of pure electric driving, reduce the average fuel consumption of the whole vehicle; improve the driver's driving experience, and ensure timely response to the driver's needs under various working conditions; make the engine, The driving motor works in the high-efficiency zone, which improves the power performance of the vehicle under the same configuration.

Description

technical field [0001] The invention relates to an energy optimization method for a new energy vehicle. Background technique [0002] With the increasingly harsh energy environment and increasingly stringent emission regulations, various OEMs have launched new energy vehicles such as pure electric vehicles, hybrid vehicles, and extended-range vehicles to alleviate energy pressure and reduce the average fuel consumption of vehicles. Due to the limitations of current new energy vehicle battery technology, the energy density of the battery system is far lower than that of fuel. Therefore, in new energy vehicles, how to effectively improve energy utilization efficiency has become the key to reducing vehicle emissions and improving the cost performance of new energy vehicles. [0003] In order to achieve energy optimization in existing new energy vehicles, the power distribution and the output torque of the motor and engine are mainly determined by the battery power and the accel...

AI Technical Summary

Problems solved by technology

[0003] In order to achieve energy optimization in existing new energy vehicles, the power distribution and the output torque of the motor and engine are mainly determined by the battery power and the accelerator pedal input of the current driver. However, in different driving stages (starting, acceleration, overtaking, braking, , coasting, etc.) the driver's needs are different, so a fixed optimization scheme may cause the output power to exceed the driver's demand, resulting in a decrease in energy utilization

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