Fuel battery hybrid power automobile system

Abstract

The invention discloses a fuel battery hybrid power automobile system, and belongs to the field of B60W or B60K classification. The system comprises a fuel battery pack, a single-stage boost inverter, a storage battery pack and a motor. The fuel battery pack serves as an input power supply (Vin) of the single-stage boost inverter. The single-stage boost inverter is connected with the storage battery pack (Bat) and finally connected to the motor, and comprises a coupled inductor, wherein a primary side winding and a secondary side winding of the coupled inductor are tightly coupled, and the number of turns of the primary side winding N1 is smaller than the number of turns of the secondary side winding N2. An excitation inductor is in parallel connection with the two ends of the primary side winding of the coupled inductor. The cost of the fuel battery hybrid power automobile system can be lowered, the structure of the fuel battery hybrid power automobile system can be simplified, the reliability of the fuel battery hybrid power automobile system can be improved, and the service life of the fuel battery hybrid power automobile system can be prolonged.

Description

technical field [0001] The invention belongs to the technical field of new energy hybrid vehicles, relates to a fuel cell hybrid vehicle system, and belongs to the classification field of B60W or B60K on the international classification table. Background technique [0002] Fuel cells are used for vehicle driving, which provides an effective solution to energy problems and environmental pollution problems. Pure fuel cell vehicles have only one power source, the fuel cell, and all the power loads of the vehicle are provided by the fuel cell. The disadvantages are (1) high power and high cost; (3) Braking energy recovery cannot be performed. The characteristics of the fuel cell determine that it is best to operate in a constant power region to prolong its service life and improve efficiency. However, the power of the driving motor changes, so in order to balance the two parts of power and absorb the braking feedback energy, the current fuel cell Battery vehicles adopt a hybri...

AI Technical Summary

Problems solved by technology

[0004] The conventional voltage source inverter has the following disadvantages: it belongs to the step-down conversion circuit, and for DC / AC power conversion occasions with low DC voltage and high AC output voltage, an additional DC / DC step-up conversion is required The upper and lower devices of each bridge arm cannot be turned on at the same time, and the through problem caused by false triggering caused by electromagnetic interference is the main killer of the reliability of the converter

Such methods increase the cost and control complexity of the system, reduce the conversion efficiency, and do not solve the problems existing in the conventional voltage source inverter mentioned above

Images