Air inlet temperature control device of fuel cell and control method of air inlet temperature control device

A fuel cell, intake air temperature technology, applied in fuel cells, fuel cell additives, fuel cell heat exchange, etc., can solve the problems of difficult low-temperature cold start of vehicles, uncontrollable hydrogen temperature, etc.

Pending Publication Date: 2022-01-21
BEIJING SINOHYTEC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention aims to provide a fuel cell intake air temperature control device and its control method to solve the problem in the prior art that the temperature of the air and hydrogen gas entering the stack is uncontrollable, which makes it difficult to start the vehicle at low temperature and cold

Method used

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  • Air inlet temperature control device of fuel cell and control method of air inlet temperature control device
  • Air inlet temperature control device of fuel cell and control method of air inlet temperature control device
  • Air inlet temperature control device of fuel cell and control method of air inlet temperature control device

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Embodiment 1

[0063] An embodiment of the present invention discloses an air intake temperature control device for a fuel cell, including an air compressor, a hydrogen injector, an intercooler 1, an intercooler 2, a water pump, a thermostat 1, and a thermostat 2 , heater one, heater two and controllers such as figure 1 shown.

[0064] The output end of the air compressor is connected to the air inlet of the fuel cell stack through the intercooler one; the output end of the hydrogen injector is connected to the hydrogen inlet of the fuel cell stack through the intercooler two; the input end of the water pump is connected to the fuel cell stack The output end of the water circuit coolant is connected, and its output end is connected to the input end of the thermostat two through the heater two; Connect with the input terminal of thermostat 1; connect the output terminal 1 of thermostat 1 with the input terminal of intercooler 1, and connect the output terminal 2 with the input terminal of in...

Embodiment 2

[0069] To improve on the basis of Embodiment 1, the air intake temperature control device also includes a throttle valve arranged between the intercooler one and the fuel cell stack, such as image 3 shown.

[0070] The control end of the throttle is connected with the output end of the controller, the input end is connected with the output end of the intercooler one, and the output end is connected with the air inlet of the stack fuel cell stack.

[0071] Preferably, the intake air temperature control device further includes temperature sensor one to temperature sensor four. The output terminals of temperature sensor one to temperature sensor four are respectively connected to the input terminal of the controller.

[0072] The first temperature sensor is arranged on the inner wall of the pipeline at the air inlet of the fuel cell stack, and is used to collect the air temperature at the inlet of the stack in real time.

[0073] The second temperature sensor is arranged on th...

Embodiment 3

[0107] Another embodiment of the present invention also discloses a method for controlling the intake air temperature of the fuel cell corresponding to the devices in Embodiments 1 and 2, including the following steps:

[0108] S1. Build the intake air temperature control device of the fuel cell, and start the intake air temperature control device;

[0109] S2. Identify the current operating state of the fuel cell;

[0110] S3. If the fuel cell is off, control heater 1 and thermostat 1 to turn off, and periodically start heater 2 and thermostat 2 to heat the fuel cell until the coolant temperature at the stack inlet reaches the preset temperature , control heater 2 and thermostat 2 to close;

[0111] S4. If the fuel cell is in the starting state, firstly control heater 1 and 2 to turn off, thermostat 1 to fully close and thermostat 2 to fully open, control the water pump to run at a preset speed, then control heater 2 to heat up, During the heating process, adjust the openin...

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Abstract

The invention provides an air inlet temperature control device of a fuel cell, belongs to the technical field of fuel cell temperature control, and solves the problem that low-temperature cold start of a vehicle is difficult due to uncontrollable temperatures of air and hydrogen entering a stack in the prior art. The device comprises an air compressor, a hydrogen ejector, a first intercooler, a second intercooler, a water pump, a first thermostat, a second thermostat, a first heater, a second heater and a controller. The air compressor is connected with an air inlet of the electric pile through the first intercooler; the hydrogen ejector is connected with a hydrogen inlet of an electric pile through the second intercooler; a waterway cooling liquid output end of the electric pile is connected with an input end of the second thermostat through the water pump and the second heater; the output end of the second thermostat is connected with the waterway cooling liquid input end of the electric pile, and is connected with the input end of the first thermostat through the first heater; the output end of the first thermostat is connected with the corresponding input ends of the first intercooler and the second intercooler; and the output end of the controller is respectively connected with the control ends of the first thermostat, the second thermostat, the water pump, the first heater and the second heater.

Description

technical field [0001] The invention relates to the technical field of fuel cell temperature control, in particular to a fuel cell air intake temperature control device and a control method thereof. Background technique [0002] As people pay more and more attention to environmental and energy issues, fuel cells are considered to be one of the most promising energy sources, which have the advantages of high conversion efficiency, high power density, no pollution, and low noise. [0003] The raw materials of the fuel cell system are hydrogen and oxygen in the air, respectively, and the hydrogen and air are transported to the inside of the fuel cell through pipelines. Among them, the temperature of the air after being compressed by the air compressor is relatively high, and the temperature is usually lowered by using an intercooler; the cooling method is generally that the intercooler is connected in parallel with the stack cooling water circuit, and this method cannot control...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04007H01M8/04014H01M8/04029H01M8/04701H01M8/04992
CPCH01M8/04708H01M8/04723H01M8/04738H01M8/04014H01M8/04037H01M8/04074H01M8/04029H01M8/04992Y02E60/50
Inventor 张潇丹李文文刘亚举李飞强
Owner BEIJING SINOHYTEC
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