CN214898525U

CN214898525U - Harmful gas adsorption filter for hydrogen fuel cell automobile

Info

Publication number: CN214898525U
Application number: CN202121316740.8U
Authority: CN
Inventors: 胡保磊
Original assignee: Hengbo Holdings Co ltd
Current assignee: Hengbo Holdings Co ltd
Priority date: 2021-06-15
Filing date: 2021-06-15
Publication date: 2021-11-26
Anticipated expiration: 2031-06-15

Abstract

The invention provides a harmful gas adsorption filter for a hydrogen fuel cell automobile, which comprises a filter shell, wherein the front end of the filter shell is connected with an air inlet pipe, the rear end of the filter shell is connected with an air outlet pipe, a harmful gas sensor is arranged in the air inlet pipe, an air outlet gas monitoring sensor is arranged in the air outlet pipe, an air outlet of the air outlet pipe is connected with an air compressor to generate negative pressure, a PM2.5 filter screen assembly is arranged at the front end of the filter shell close to the air inlet pipe, a direct current channel and an adsorption channel which are mutually independent and communicated with the air outlet pipe are arranged at the rear end of the filter shell, an air outlet grating plate and a grating air outlet plate motor are arranged in the direct current channel, the air outlet grating plate can open or close the direct current channel under the driving of the air outlet grating plate motor, and a filter screen grating plate is arranged in the adsorption channel from front to back, the device comprises a control grid plate motor and an active carbon adsorption filter screen component, wherein the adsorption channel can be opened or closed by the filter screen grid plate driven by the control grid plate motor. The invention can adsorb harmful gas in the fuel cell inlet air.

Description

Harmful gas adsorption filter for hydrogen fuel cell automobile

Technical Field

The invention relates to a filter, in particular to a harmful gas adsorption filter for a hydrogen fuel cell automobile.

Background

With the proposal of the overall target of 'carbon neutralization and carbon peak reaching', the research and development and the use of new energy automobiles will contribute little force to national energy conservation and emission reduction. And hydrogen, which is known as ultimate energy of human beings, is also laid out in the fuel cell automobile industry.

In the air of the road environment, a large amount of nitrogen oxides (mainly NO 2) and sulfur oxides (mainly SO 2) and hydrocarbons are generated due to the exhaust emissions of internal combustion engines and industrial exhaust gases. At present, a single-effect filtering system is adopted in a part of a fuel cell cathode filter, so that the damage to a galvanic pile is very serious, researches show that the voltage loss caused by gases such as carbon monoxide, nitrogen dioxide and the like can be directly used for cleaning the cells by conventional operations such as gas cleaning and the like so as to completely recover the performance of the cells, and the catalyst poisoning caused by gases such as sulfur dioxide, hydrogen sulfide and the like cannot be completely recovered by a conventional method.

The fuel cell reactor is formed by stacking a plurality of unit cells in series. The bipolar plates and the membrane electrode are alternately superposed, sealing elements are embedded between the monomers, and the monomers are tightly pressed by the front end plate and the rear end plate and then are fastened and fastened by screws, so that the fuel cell stack is formed.

When the electric pile works, air is introduced from the inlet through the compressor and distributed to the bipolar plates of the monocells through the main gas channel of the electric pile, and the catalyst layer and the gas diffusion layer are rich in porosity and small in pore size and are easily blocked by particulate matters in the air, so that the filter capable of adsorbing harmful gas is very necessary.

In the current market, the cathode filter is changed on the basis of a filter material, and an original single-layer filter material is compounded with an activated carbon layer to form an integral filter element. Used for ensuring the adsorption of harmful gases so as to protect the effective operation of the galvanic pile. However, the maintenance cost of the product is high, the filter element can quickly reach load saturation due to more fine dust such as dust particles PM2.5 and the like in the air, and the occurrence of harmful gas in the air is regional, timeliness and difference, namely, when the dust saturates fiber gaps, the gas adsorption layer does not reach the corresponding saturation degree. However, when the filter element is replaced, the filter element needs to be replaced together. The cost of maintenance is increased.

Disclosure of Invention

In view of the above problems, the present invention is directed to a harmful gas adsorption filter for a hydrogen fuel cell vehicle, which can monitor the concentration of harmful gas that may damage a cell in intake air and adsorb the harmful gas when the concentration is too high.

The invention provides a harmful gas adsorption filter for a hydrogen fuel cell automobile, which comprises a filter shell, wherein the front end of the filter shell is connected with an air inlet pipe, the rear end of the filter shell is connected with an air outlet pipe, a harmful gas sensor is arranged in the air inlet pipe, an air outlet gas monitoring sensor is arranged in the air outlet pipe, an air outlet of the air outlet pipe is connected with an air compressor to generate negative pressure, a PM2.5 filter screen assembly is arranged at the front end of the filter shell close to the air inlet pipe, a direct current channel and an adsorption channel which are mutually independent and communicated with the air outlet pipe are arranged at the rear end of the filter shell, an air outlet grating plate and an air outlet grating plate motor are arranged in the direct current channel, the air outlet grating plate can open or close the direct current channel under the driving of the air outlet grating plate motor, a filter screen grating plate, a control grating plate motor and an active carbon adsorption filter screen assembly are arranged in the adsorption channel from front to back, the filter screen grating plate can open or close the adsorption channel under the drive of the control grating plate motor.

Preferably, the surface structure of the activated carbon adsorption filter screen component is honeycomb-shaped.

The invention can monitor the concentration of harmful gas which can damage the battery in the air inlet, can effectively adsorb impurity dust particles and harmful gas substances in the air, achieves the purposes of protecting the effective operation and stable output of the galvanic pile, and effectively reduces the maintenance cost.

Drawings

FIG. 1 is a schematic structural view of the present invention;

wherein: 1-a filter housing; 2, an air inlet pipe; 3-air outlet pipe; 4-harmful gas sensor; 5-gas outlet gas monitoring sensor; 6-PM 2.5 filter screen assembly; 7-direct current channel; 8-adsorption channel; 9-air outlet grid plate; 10-air outlet grid plate motor; 11-a filter screen grating plate; 12-controlling the grid plate motor; 13-an active carbon adsorption filter screen component.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in figure 1, the invention provides a harmful gas adsorption filter for a hydrogen fuel cell automobile, which comprises a filter shell 1, wherein the front end of the filter shell 1 is connected with an air inlet pipe 2, the rear end of the filter shell 1 is connected with an air outlet pipe 3, a harmful gas sensor 4 is arranged in the air inlet pipe 2, an air outlet gas monitoring sensor 5 is arranged in the air outlet pipe 3, an air outlet of the air outlet pipe 3 is connected with an air compressor to generate negative pressure, a PM2.5 filter screen component 6 is arranged at the front end of the filter shell 1 close to the air inlet pipe 2, a direct current channel 7 and an adsorption channel 8 which are mutually independent and communicated with the air outlet pipe 3 are arranged at the rear end of the filter shell 1, an air outlet grating plate 9 and an air outlet grating plate motor 10 are arranged in the direct current channel 7, the air outlet grating plate 9 can open or close the direct current channel 7 under the driving of the air outlet grating plate motor 10, and a filter screen grating plate 11 is arranged in the adsorption channel 8 from front to back, A control grid plate motor 12 and an active carbon adsorption filter screen component 13, wherein the filter screen grid plate 11 can open or close the adsorption channel 8 under the drive of the control grid plate motor 12.

Preferably, the surface structure of the activated carbon adsorption filter screen assembly 13 is honeycomb-shaped, so that the contact area during adsorption is increased, and the adsorption efficiency is improved.

During the running process of the hydrogen fuel cell automobile on the road surface, negative pressure is generated due to the operation of the air compressor, so that air enters from the air inlet of the air inlet pipe 2. The concentration of harmful gas (harmful gas of interest) in the atmosphere is monitored by the front-end pipe harmful gas sensor 4:

if the concentration of harmful gas in the air does not reach the requirement of a calibration value, the control unit inputs a signal to the control grid plate motor 12, the filter screen grid plate 11 is rotated to be closed, an electric signal is output to the air outlet grid plate motor 10 at the same time, the air outlet grid plate 9 is controlled to be opened, the direct current channel 7 is in an open circulation state, and clean air flow filtered by the PM2.5 filter screen assembly 6 enters a rear pipeline from an air outlet of the air outlet pipe 3.

If the concentration of harmful gas in the air reaches the requirement of a calibrated value, a control unit inputs a signal to a control grid plate motor 12 to enable the control grid plate motor to rotate for a certain angle, a filter screen grid plate 11 is opened to enable the air flow to pass through, and meanwhile, an electric signal is output to an air outlet grid plate motor 10 to enable the control grid plate motor to rotate for a certain angle, an air outlet grid plate 9 is closed, a direct current channel 7 is in a closed state, the air flow can only pass through a PM2.5 filter screen component 6 and an active carbon adsorption filter screen component 13, the harmful gas is absorbed by the active carbon adsorption filter screen component 13, and finally clean air enters a rear pipeline from an air outlet of an air outlet pipe 3.

The invention can effectively purify fine particles in the air, such as dust with PM2.5 particle size, and harmful gas in the air, so as to protect the galvanic pile from being corroded by the harmful gas or poisoning the catalyst, thereby protecting the galvanic pile to operate and stabilizing the system output power, and reducing the energy consumption. And further reduce the cost of later maintenance, only need during later maintenance the selectivity change filter screen subassembly can.

The shape and size of the invention can be adjusted according to the size of the vehicle model, but the internal structure and principle are not changed, and the surface shape of each filter screen component can be selected in various ways.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change or modification made to the above embodiments according to the technical principle of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A harmful gas adsorption filter for a hydrogen fuel cell automobile is characterized in that: comprises a filter shell (1), the front end of the filter shell (1) is connected with an air inlet pipe (2), the rear end is connected with an air outlet pipe (3), a harmful gas sensor (4) is arranged in the air inlet pipe (2), an air outlet gas monitoring sensor (5) is arranged in the air outlet pipe (3), the air outlet of the air outlet pipe (3) is connected with an air compressor to generate negative pressure, a PM2.5 filter screen component (6) is arranged at the front end of the filter shell (1) close to the air inlet pipe (2), a direct current channel (7) and an adsorption channel (8) which are mutually independent and communicated with the air outlet pipe (3) are arranged at the rear end of the filter shell (1), an air outlet grating plate (9) and an air outlet grating plate motor (10) are arranged in the direct current channel (7), the air outlet grating plate (9) can open or close the direct current channel (7) under the driving of the air outlet grating plate motor (10), adsorption channel (8) interior by being provided with filter screen grid board (11), control grid board motor (12) and active carbon adsorption filter screen subassembly (13) after going to, filter screen grid board (11) can open or seal adsorption channel (8) under the drive of control grid board motor (12).

2. The harmful gas adsorption filter for a hydrogen fuel cell automobile according to claim 1, characterized in that: the surface structure of the active carbon adsorption filter screen component (13) is honeycomb-shaped.