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Control device of fuel cell electric vehicle

A fuel cell and control device technology, applied in battery circuit devices, electric vehicles, circuit devices, etc., can solve problems such as voltage instability

Inactive Publication Date: 2011-04-06
JIANGSU QINGNENG NEW ENERGY TECHNOLOGIES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the characteristics of fuel cell power generation performance, the voltage is unstable. To make the ordinary motor run normally, it must be stabilized by DC-DC to make the motor run. In this way, in addition to the loss of the motor and the drive itself during a driving process, Coupled with the loss of the DC-DC DC voltage regulator, two-stage losses are generated

Method used

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  • Control device of fuel cell electric vehicle
  • Control device of fuel cell electric vehicle
  • Control device of fuel cell electric vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Such as figure 1 As shown, connect the positive terminal of the output terminal of the fuel cell 1 to one terminal of the switching element 2 in the pulse width modulation controller, and the other terminal of the switching element 2 is connected to the motor 4 of the electric vehicle, and is directly connected in series with the coil inside the motor of the electric vehicle. When the driving circuit 5 When outputting a high potential, the switch element 2 is turned on, and the output of the fuel cell 1 directly supplies power to the motor 4 of the electric vehicle to make the motor rotate. When the driving circuit 5 outputs a low potential, the switching element 2 is cut off, and the fuel cell 1 stops outputting power to the motor. At this time, one end is connected to the switching element, and the other end is connected to the freewheeling diode (DI) 3 of the negative pole of the fuel cell. flow, continue to provide current for the electric vehicle motor 4, so that ...

Embodiment 2

[0021] Such as figure 2 As shown, the positive end of the fuel cell 1 is connected to the switching element 2 and the control circuit 6, the other end of the control circuit 6 is connected to one end of the driving circuit 5, and the other end of the driving circuit is connected to the switching element. The third end of the switch element 2 is connected to one end of the freewheeling diode 3 and connected to the motor 4 of the electric vehicle. The other end of the electric vehicle motor 4 is connected with the negative pole of the freewheeling diode 3 and the fuel cell 1 . When the fuel cell is overloaded and started, a large current and a very low voltage will be generated instantaneously. At this time, the control circuit 6 samples the operating voltage, and the data is analyzed and judged by the control circuit. When the output voltage of the fuel cell is lower than the set value, the control circuit will automatically adjust the output pulse width of the drive circuit...

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PUM

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Abstract

The invention relates to a control device of a fuel battery electric vehicle, comprising a fuel battery, a switch element, a driving circuit, a freewheel diode and an electric vehicle motor. The anode of the fuel battery is connected with one end of the switch element; the other end of the switch element is connected with the driving circuit; the third end of the switch element is connected with one end of the freewheel diode and one end of the electric vehicle motor; the other end of the electric vehicle motor is connected with the other end of the freewheel diode and the cathode of the fuelbattery. Compared with the prior art, the invention has the advantages of high reliability, low loss, etc.

Description

technical field [0001] The invention relates to a fuel cell, in particular to a control device for a fuel cell electric vehicle. Background technique [0002] Fuel cells use hydrogen as fuel, oxygen as oxides, and the by-product of the chemical reaction is water without other harmful substances. It is a safe, reliable, clean and environment-friendly power generation device. With the improvement of fuel cell technology, it has been applied in submarines, automobiles, laptops and mobile phones. [0003] With the expansion of fuel cell applications, people are more and more concerned about the control of fuel cells in operation, how to implement the control of battery operating temperature, gas humidity, Overvoltage, current protection, efficiency, etc. put forward a series of requirements. Especially during the operation process of electric vehicles from cold start to overload, the voltage and current change greatly. However, due to the characteristics of fuel cell power ge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L11/18B60L15/00H02J7/00
CPCY02T10/7005Y02T10/70
Inventor 阿柯金柯卢勇
Owner JIANGSU QINGNENG NEW ENERGY TECHNOLOGIES CO LTD