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Fuel cell hybrid electric vehicle system

A hybrid electric vehicle, fuel cell technology, applied in electric vehicles, battery/fuel cell control devices, electric traction, etc., can solve the problem of increasing system cost and control complexity, the inability of upper and lower devices to be turned on at the same time, and reduced conversion efficiency and other problems, to achieve the effect of improving system reliability, increasing bus voltage, and large boosting capacity

Active Publication Date: 2017-09-29
唐棣
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  • Description
  • Claims
  • Application Information

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

Method used

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Embodiment Construction

[0014] as attached Figure 4 As shown, the present invention is used in a single-stage boost inverter control system of a fuel cell hybrid vehicle, and the system includes a fuel cell group, a single-stage boost inverter, a battery pack and a motor. The fuel cell stack is used as the input power Vin of the single-stage boost inverter, and the single-stage boost inverter is connected to the battery pack (Bat), and finally connected to the motor. A coupled inductor with primary and secondary windings N1 and N2 tightly coupled and N1

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Abstract

The invention discloses a fuel cell hybrid electric vehicle system. The system comprises a fuel cell pack, an independent grade boosting inverter, a storage cell pack and an electromotor. The fuel cell pack is adopted as an input power source for the independent grade boosting inverter, and the independent grade boosting inverter is connected with the storage cell pack and finally connected to the electromotor; according to the fuel cell hybrid electric vehicle system, the system cost can be lowered, the system structure can be simplified, the system reliability can be improved, and the system service life 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. This case is a divisional case of 201510586584X (a fuel cell hybrid vehicle system). 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 abs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L11/18
CPCB60L50/50B60L58/12B60L58/40B60L2240/54Y02T10/70Y02T10/72Y02T90/40
Inventor 唐棣
Owner 唐棣
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