Electric vehicle extended range power supply system and control method thereof and range extending electric vehicle

Abstract

The invention discloses an electric vehicle extended range power supply system and a control method thereof and an extended range electric vehicle. A vehicle controller of the electric vehicle extended range power supply system controls the power supply state of a battery pack and a high-voltage direct current bus. An intelligent controller controls a variable speed clutch and a direct current motor so as to change a power source of an extended range generator, and the intelligent controller controls the connection state between the extended-range generator and the battery pack. A low-speed shaft of a speed increaser I is connected with an axle, a high speed shaft of the speed increaser I is connected with the input end of the variable speed clutch, and a rotor shaft of the extended-rangegenerator is connected with the output end of the variable speed clutch. An output shaft of the direct current motor is connected with the rotor shaft of the extended-range generator through a speed increaser II and a flywheel. The control method uses the electric vehicle extended range power supply system to provide power for the electric vehicle. The electric vehicle comprises the electric vehicle extended range power supply system. According to the electric vehicle extended range power supply system and the control method thereof and the extended range electric vehicle, two sets of power generation drive systems are controlled by the intelligent controller to charge the battery pack continuously, and the effects that the endurance range is increased and the difficulty of charging is solved.

Description

technical field [0001] The invention belongs to the technical field of electric vehicles, and in particular relates to a range-extending power supply system for electric vehicles capable of effectively increasing cruising range and easy battery charging, a control method thereof, and a range-extending electric vehicle. Background technique [0002] With the development of industrialization and modernization, climate change, energy and environmental issues are long-term issues faced by human society. Whether the three major issues of greenhouse gas emissions, energy consumption and exhaust emissions in the transportation field are effectively resolved will directly affect the development direction of human society. To this end, the governments, organizations, automakers, energy suppliers, and venture capital companies of major countries around the world are acting together to promote the upgrading of the global auto industry's industrial structure and the strategic transforma...

AI Technical Summary

Problems solved by technology

However, at present, the generators used in conjunction with the range extender generally have low output power and low power generation efficiency, which cannot meet the requirements of users.

Moreover, charging the battery through an energy-consuming engine will also cause secondary pollution from engine emissions, which deviates from the original intention of electric vehicles to be environmentally friendly and energy-saving.

In addition, many pure electric vehicles in China are equipped with brake feedback power to supplement the battery, but because the feedback voltage during braking is generally relatively high, it will cause the on-board charging circuit and power supply circuit to break away from the power supply system during braking, making the battery of the electric vehicle It can neither charge continuously, nor can it realize normal driving power supply, which brings danger to driving

[0004] In addition, most of the power systems used in electric vehicles in the prior art use a single battery pack or multiple battery packs in series, not only old and new batteries, batteries with different capacities, or battery packs with different characteristics cannot be used together; The failure of the battery pack will lead to the failure of the entire battery system

Not only greatly increases the production and screening costs of the battery system, but also makes it difficult to reuse old batteries

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