Hydrogen fuel battery series-parallel hybrid power system and passenger car

Abstract

The invention discloses a hydrogen fuel battery series-parallel hybrid power system and a passenger car. The hybrid power system comprises a hydrogen fuel battery controller, a hydrogen fuel battery system, a DC / DC converter, a DC / DC controller, a motor controller and a driving motor, wherein the hydrogen fuel battery controller, the hydrogen fuel battery system, the DC / DC converter, the DC / DC controller and the motor controller are sequentially and electrically connected; the driving motor is connected with a dynamic coupler; an electricity distribution cabinet, an external connection charging opening and a power battery are sequentially and electrically connected to the motor controller; an electric generator and the driving motor are mechanically connected with a rear axle speed reducing mechanism through the dynamic coupler; driving wheels are mechanically connected to two sides of the rear axle speed reducing mechanism; and the external connection charging opening is in communication connection with a battery management system. The passenger car with the power system disclosed by the invention is high in energy utilization rate, so that electric quantity is saved; under adverse working conditions, a manner that an engine outputs power to drive the passenger car to travel is adopted, so that electricity can be generated through the electric generator, and is stored in the power battery, the energy utilization and distribution can also be maximized, the total energy of an electrical power system is improved, and the endurance mileage is enlarged.

Description

technical field [0001] The invention relates to the technical field of hydrogen fuel cell hybrid power, in particular to a hydrogen fuel cell hybrid power system and a passenger car. Background technique [0002] Industry experts believe that there are still many uncertainties about which powertrain of battery vehicles and fuel vehicles will become the mainstream in the future. Electrification is an inevitable trend in the future development of automotive powertrains. In the future, vehicle power will inevitably be a situation where multiple forms of electrification coexist. However, there are still large variables in the proportion of various driving forces. First of all, after 2020, subsidies will be canceled and a completely free competitive market will become a market. It is still uncertain which driving force will become the mainstream. Secondly, the battery performance will improve in the future, and the cost will definitely decrease, but it is still uncertain when t...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the above-mentioned technical problems, the object of the present invention is to provide a hydrogen fuel cell series hybrid power system and passenger car, aiming at solving problems such as insufficient power supply of auxiliary equipment, water heat management system and fuel cell stack heating no longer use electric heating strategy, switch to engine water cycle heating to save electricity; improve the total energy of the power system and increase the cruising range; high energy utilization rate and other issues; improve the high-power structure of a single fuel cell, greatly reducing the cost of the vehicle and improving the working efficiency of the fuel cell Higher, lower performance requirements, better cold start performance, the power battery not only brakes to recover energy, but also uses the generator to generate electricity, stores more electricity faster, and the peak power of the engine lasts for a long time, realizing long-distance pure electric driving. Recover more energy, according to different charging habits of users, short-distance or urban electricity, long-distance hybrid power and other high power and economy

Images