Fuel cell system power-cut protection control method and device

A fuel cell system and fuel cell technology, applied in the field of automobiles, can solve the problems of non-cleaning and danger of exhaust gas, and achieve the effect of improving safety level and prolonging service life

Active Publication Date: 2017-06-23
成都前锋电子股份有限公司
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Problems solved by technology

[0003] The invention provides a control method and control device for power-off protection of a fuel cell system, the purpose of which is to solve the pr

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  • Fuel cell system power-cut protection control method and device
  • Fuel cell system power-cut protection control method and device
  • Fuel cell system power-cut protection control method and device

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Embodiment Construction

[0045] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0046] The invention provides a control method and a control device for the power-off protection of the fuel cell system, aiming at the problem that the remaining electric energy has no place to transport the tail gas without cleaning after the whole vehicle is powered off in the existing fuel cell reactor, which causes danger.

[0047] Such as figure 1 As shown, the embodiment of the present invention provides a control method for power-off protection of a fuel cell system, which is applied to an automotive electronic control unit, and the control method includes:

[0048] Step 11, detecting the vehicle power gear information;

[0049] Step 12, when the vehicle power supply gear is switched to the OFF gear, output a first CAN command to the fuel cell c...

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PUM

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Abstract

The invention provides a fuel cell system power-cut protection control method and device. The control method includes the following steps that vehicle power gear information is detected; when the vehicle power gear is switched to the OFF gear, a first CAN command is output to a fuel cell controller, and according to the first CAN command, the fuel cell controller outputs a working stopping command to a fuel cell reactor; when a second CAN command which refers to completing of fuel cell reactor discharge and sent by the fuel cell reactor is received, and according to the second CAN command, a cut-off signal is sent to a low-voltage power supply switch, wherein the low-voltage power supply switch is connected between the fuel cell controller and a storage battery so as to make the fuel cell controller cut off power. By means of the fuel cell system power-cut protection control method and device, the service life of the fuel cell reactor is prolonged, and the user experience is not affected.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a control method and a control device for power-off protection of a fuel cell system. Background technique [0002] Compared with the generator system, the fuel cell system is more environmentally friendly and does not have an energy storage device. In view of the particularity of the fuel cell reactor, the fuel cell vehicle has the problem of power-off, that is, the fuel cell cannot be shut down immediately. The fuel cell reactor does not shut down until some time after the fuel supply is stopped. If the high-voltage contactor of the whole vehicle is cut off after the vehicle is powered off at this time, the fuel cell reactor will be very prone to danger because the generated electric energy has nowhere to transport the exhaust gas without cleaning. Contents of the invention [0003] The invention provides a control method and a control device for power-off protection of a fuel ce...

Claims

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Application Information

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IPC IPC(8): B60L11/18
CPCB60L58/30Y02T10/70Y02T90/40
Inventor 刘文月
Owner 成都前锋电子股份有限公司
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