Power generation control device for hybrid vehicle

Abstract

A hybrid vehicle 12 can travel by driving a motor 23 using electricity generated by a generator 31 driven by an engine 25 and / or electricity stored in a battery 50. In a first mode, the engine 25 is driven by an accelerator operation of a predetermined amount or more. In a second mode, the engine 25 is driven by an accelerator operation smaller than the predetermined amount. A power generation restriction unit 610 is capable of restricting the amount of electricity to be generated by the generator 31 in the second mode, and, when driving the engine 25 while the state of charge of the battery 50 is equal to or more than a first predetermined value, reduces the amount of electricity to be generated by the generator 31 so as to be less than the amount of electricity generated by the generator31 when driving the engine 25 while the state of charge of the battery 50 is less than the first predetermined value.

Description

technical field [0001] The invention relates to a power generation control device of a hybrid vehicle. Background technique [0002] Conventionally, in a hybrid vehicle equipped with an engine and an electric motor, the electric motor is regeneratively operated to generate braking force (regenerative braking force) during deceleration, downhill, etc., thereby reducing energy loss. Here, the electric motor generates power during the regenerative operation, but when the charge rate of the battery is high, the received amount of electric power generated by the regenerative operation decreases, resulting in a problem that the regenerative braking force decreases. [0003] In order to solve this problem, for example, in the following patent document 1, a hybrid electric vehicle is disclosed. Powered traveling motor, and can perform energy regeneration operation, the energy regeneration operation converts the energy generated when the vehicle decelerates into electrical energy th...

AI Technical Summary

Problems solved by technology

Therefore, when the engine is started in a state where the charge rate of the battery is high, there is a technical problem that the state where regenerative braking is difficult to function continues for a long time.

[0010] In the prior art described above, the electric power generated during regenerative operation is consumed by the power consumption device (exhaust gas purification device, generator), but as mentioned above, the engine cannot be driven by the generator while the engine is running.

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