Anti-freezing device for tail exhaust of fuel cell, control method and vehicle

An antifreeze device and fuel cell technology, applied in the direction of battery/fuel cell control devices, fuel cells, fuel cell additives, etc., can solve the problem of freezing of the tail row area of ​​the stack, unfavorable fuel cell drainage, exhaust, and affecting the fuel cell Problems such as normal startup to achieve the effect of improving life

Pending Publication Date: 2022-03-29
BEIJING SINOHYTEC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In a low-temperature environment of a fuel cell vehicle, the residual water in the tailpipe tends to flow back to the stack, resulting in the freezing of the tail area of ​​the stack and affecting the normal start-up of the fuel cell
In addition, after the water remaining in the pipeline freezes, it is not conducive to the drainage and exhaust of the fuel cell

Method used

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  • Anti-freezing device for tail exhaust of fuel cell, control method and vehicle
  • Anti-freezing device for tail exhaust of fuel cell, control method and vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] An antifreeze device for a fuel cell tail row, the fuel cell tail row includes a tail row interface and a tail row pipe connected to the tail row interface,

[0059] The antifreeze device includes a temperature sensor and a circulating heating assembly;

[0060] The temperature sensor is arranged on the exhaust pipe;

[0061] The circulation heating assembly includes a controller, a heater, a liquid tank, a pump and pipelines, the liquid tank and the pump form a circulation through the pipelines, the heater is used for heating the circulation, and the pipelines in the circulation and the exhaust pipe Contact, the controller controls the work of the heater and the pump through the temperature sensor;

[0062] The antifreeze device also includes a one-way valve, which is an electromagnetic valve; the controller controls the inner diameter of the one-way valve; and the one-way valve is arranged on the exhaust pipe.

[0063] There are two groups of temperature sensors, and ...

Embodiment 2

[0070] An antifreeze device for a fuel cell tail row, the fuel cell tail row includes a tail row interface and a tail row pipe connected to the tail row interface,

[0071] The antifreeze device includes a temperature sensor and a circulating heating assembly;

[0072] The temperature sensor is arranged on the exhaust pipe;

[0073] The circulation heating assembly includes a controller, a heater, a liquid tank, a pump and a pipeline, the liquid tank and the pump form a circulation through the pipeline, the heater is used for heating the circulation, and the pipeline in the circulation and the exhaust pipe contact, the controller controls the work of the heater and the pump through the temperature sensor.

[0074] The antifreeze device also includes a one-way valve, the one-way valve is a solenoid valve, and the controller controls the inner diameter of the one-way valve; the one-way valve is arranged on the exhaust pipe.

[0075] There are two groups of temperature sensors,...

Embodiment 3

[0082] A method for controlling the antifreeze device of the fuel cell tail row described in Embodiment 1 or Embodiment 2, comprising

[0083] The temperature sensor acquires the temperature in the exhaust pipe, and if the temperature is lower than 0°C or there is freezing, the controller sends a control signal to the heater and the pump starts heating;

[0084] The pressure sensor acquires the pressure signal at the inlet of the one-way valve, and the controller controls the flow of the pump;

[0085] When the temperature in the exhaust pipe and the pressure at the inlet of the one-way valve meet the requirements, the controller controls the heater and the pump to stop working.

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PUM

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Abstract

The invention relates to the technical field of fuel cells, in particular to an anti-freezing device for a tail exhaust of a fuel cell, the tail exhaust of the fuel cell comprises a tail exhaust interface and a tail exhaust pipe connected to the tail exhaust interface, and the anti-freezing device comprises a temperature sensor and a cyclic heating assembly; the temperature sensor is arranged on the tail discharge pipe; the circulating heating assembly comprises a controller, a heater, a liquid tank, a pump machine and a pipeline, the liquid tank and the pump machine form circulation through the pipeline, the heater is used for heating the circulation, the pipeline in the circulation is in contact with the tail discharge pipe, and the controller controls work of the heater and the pump machine through a temperature sensor; through the arrangement of the circulating heating assembly, the temperature condition in the tail discharge pipe can be obtained by detecting the temperature sensor, the work of the heater and the pump machine is controlled through the temperature sensor, then heating of the heating pipeline is achieved, and then ice melting is achieved or residual liquid in the tail discharge pipe is prevented from being frozen; unnecessary unfreezing time is reduced, and the service life of the fuel is prolonged.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to an antifreeze device for fuel cell tail rows. Background technique [0002] Existing fuel cell vehicles seldom have anti-freezing tail exhausts installed. From the fuel exhaust outlet, the transition from silicone tubes to stainless steel tubes is used to achieve the purpose of exhaust and liquid discharge. When the vehicle is placed in a low-temperature environment, the residual liquid in the tailpipe is easy to flow back and freeze. [0003] When a fuel cell vehicle is in a low temperature environment, the residual water in the tail pipe is likely to flow back to the stack, resulting in the freezing of the tail area of ​​the stack and affecting the normal start-up of the fuel cell. In addition, after the water remaining in the pipeline freezes, it is not conducive to the drainage and exhaust of the fuel cell. Contents of the invention [0004] The technical problem to be...

Claims

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Application Information

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IPC IPC(8): H01M8/04223H01M8/04007H01M8/04029H01M8/0432B60L58/31
CPCH01M8/04253H01M8/04037H01M8/04029H01M8/04373B60L58/31Y02E60/50Y02T90/40
Inventor贾进睿于长云杨星李飞强
OwnerBEIJING SINOHYTEC