A vehicle energy management controller for internal combustion power generation extended-range electric vehicles

Abstract

The invention discloses a whole-vehicle energy management controller for an internal-combustion generating extended-range electric vehicle. According to the whole-vehicle energy management controller, an MCU (microprogrammed control unit) detects and controls an ICE (internal combustion engine) through an ICE load adjusting circuit by the aid of a functional port of the MCU as well as detects and controls an ISG (integrated starter and generator) to work through an ISG rectifier and inverter circuit; charging and discharging states of a current storage battery and charging states of a driving motor and a controller of the driving motor are read through a storage battery SOC (state of charge) and demanded driving power detection circuit; voltage ratios of two ends of each of a range extender and the storage battery are adjusted through a bidirectional DC / DC circuit, and the operating condition of the range extender ICE is optimized; a controller power supply adjusting circuit provides required working power supplies for all modules in the controller. By the aid of the whole-vehicle energy management controller, according to the SOC of the current storage battery and the demanded whole-vehicle driving power, the range extender can be started up and stopped, the output power and the operation condition of the range extender can be adjusted, and charging and discharging management of the storage battery can be coordinated, so that optimum control can be implemented on whole-vehicle energy management.

Description

technical field [0001] The invention mainly relates to a vehicle energy management controller for an internal combustion power generation extended-range electric vehicle, which is used for managing the internal combustion power generation and battery composite energy system of the extended-range electric vehicle, and coordinates and controls the operation of the range extender and battery charge and discharge management. Background technique [0002] By matching the range-extending system on the pure electric vehicle, the extended-range electric vehicle solves the problems of small battery capacity, short cruising range, and inconvenient charging in traditional pure electric vehicles to a certain extent. Existing range-extended electric vehicles generally adopt the direct coupling mode of the internal combustion power generation system and the battery, and use the internal combustion power generation to directly supply power to the vehicle and charge the battery when the batt...

AI Technical Summary

Problems solved by technology

Although the structure is simple and the effect of range extension is obvious, the internal combustion engine working conditions (including speed and load) of the internal combustion power generation system for range extension cannot be flexibly adjusted according to changes in electrical and charging loads to ensure better fuel economy and emission characteristics; battery charging and discharging are inconvenient to control , affecting battery life; it is impossible to implement complex energy management algorithms that coordinate internal combustion power generation range extenders and battery charging and discharging to ensure optimal system operation

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