Hybrid vehicle and method of changing operation mode for the same

Abstract

The invention provides a method of controlling a mode change in a hybrid vehicle, a non-transient computer readable recording medium, and a hybrid vehicle. The method includes: determining whether ornot a first state-of-charge (SOC) condition is satisfied when a current driving mode is a first mode in which discharging is performed; determining whether or not a plurality of additional conditionsis satisfied when a result of the determining is that the first SOC condition is satisfied; and performing transition to a second mode in which a state of charge is maintained when one of the additional conditions is satisfied. The additional conditions include at least one of a requested torque or requested power condition, an engine starting need condition, and a second SOC condition.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Korean Patent Application No. 10-2017-0096918 filed on July 31, 2017, which is hereby incorporated by reference as if fully set forth herein. technical field [0003] The present invention relates to a hybrid vehicle and a method of controlling its running mode, and more particularly, to a hybrid vehicle and a method of controlling the same, the hybrid vehicle being capable of operating according to the power of the battery in consideration of an inefficient engine starting condition. A change in the state of charge is used to perform a change in driving mode. Background technique [0004] In general, a hybrid electric vehicle (HEV) is a vehicle that uses two types of power sources together, and the two types of power sources are usually an engine and an electric motor. Hybrid vehicles have excellent fuel efficiency and power performance, and have the advantage of reducing the amo...

AI Technical Summary

Problems solved by technology

Understandably, despite deceleration, the engine still starts depending on SOC, and thus despite deceleration / stopping, inefficiency sections with energy waste still occur due to this engine drive

[0016] The low efficiency section occurs because a particularly large amount of energy is wasted due to motor charging / discharging efficiency, battery charging / discharging efficiency, etc. when charging is performed using engine power

However, since engine efficiency may also decrease when engine power decreases for this reason, transitioning to CS mode based only on SOC makes it difficult to avoid inefficient conditions

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