CN2851004Y - Normal pressure operated fuel cell motor air supply device - Google Patents

Abstract

The utility model relates to an air conveying appliance of a fuel cell motor, which can be operated in normal pressure and comprises a motor and an air drum, wherein the motor is arranged on the end face at one side of the air drum and a rotating shaft of the motor is perpendicular to the air drum on which an air suction opening and an air discharge opening are arranged. The air conveying appliance also comprises at least one mounting hole, wherein the mounting hole is arranged on the end face at the other side of the air drum and is in axial arrangement with the air drum, or the mounting hole is arranged at the tail end of the motor and is in axial arrnagement with the motor. The utility model adopts a flat mounting structure which integrates the motor and the air drum, can be adaptable to different mounting spaces, and has the characteristics of reasonable design, compact structure, etc.

Description

Air conveying device of fuel cell engine running at normal pressure

Technical Field

The utility model relates to a fuel cell especially relates to a fuel cell engine air conveyor of ordinary pressure operation.

Background

An electrochemical fuel cell is a device capable of converting hydrogen and an oxidant into electrical energy and reaction products. The inner core component of the device is a Membrane Electrode (MEA), which is composed of a proton exchange Membrane and two porous conductive materials sandwiched between two surfaces of the Membrane, such as carbon paper. The membrane contains a uniform and finely dispersed catalyst, such as a platinum metal catalyst, for initiating an electrochemical reaction at the interface between the membrane and the carbon paper. The electrons generated in the electrochemical reaction process can be led out by conductive objects at two sides of the membrane electrode through an external circuit to form a current loop.

At the anode end of the membrane electrode, fuel can permeate through a porous diffusion material (carbon paper) and undergo electrochemical reaction on the surface of a catalyst to lose electrons to form positive ions, and the positive ions can pass through a proton exchange membrane through migration to reach the cathode end at the other end of the membrane electrode. At the cathode end of the membrane electrode, a gas containing an oxidant (e.g., oxygen), such as air, forms negative ions by permeating through a porous diffusion material (carbon paper) and electrochemically reacting on the surface of the catalyst to give electrons. The anions formed at the cathode end react with the positive ions transferred from the anode end to form reaction products.

In a pem fuel cell using hydrogen as the fuel and oxygen-containing air as the oxidant (or pure oxygen as the oxidant), the catalytic electrochemical reaction of the fuel hydrogen in the anode region produces hydrogen cations (or protons). The proton exchange membrane assists the migration of positive hydrogen ions from the anode region to the cathode region. In addition, the proton exchange membrane separates the hydrogen-containing fuel gas stream from the oxygen-containing gas stream so that they do not mix with each other to cause explosive reactions.

In the cathode region, oxygen gains electrons on the catalyst surface, forming negative ions, which react with the hydrogen positive ions transported from the anode region to produce water as a reaction product. In a proton exchange membrane fuel cell using hydrogen, air (oxygen), the anode reaction and the cathode reaction can be expressed by the following equations:

and (3) anode reaction:

and (3) cathode reaction:

in a typical pem fuel cell, a Membrane Electrode (MEA) is generally placed between two conductive plates, and the surface of each guide plate in contact with the MEA is die-cast, stamped, or mechanically milled to form at least one or more channels. The flow guide polar plates can be polar plates made of metal materials and polar plates made of graphite materials. The fluid pore channels and the diversion trenches on the diversion polar plates respectively guide the fuel and the oxidant into the anode area and the cathode area on two sides of the membrane electrode. In the structure of a single proton exchange membrane fuel cell, only one membrane electrode is present, and a guide plate of anode fuel and a guide plate of cathode oxidant are respectively arranged on two sides of the membrane electrode. The guide plates are used as current collector plates and mechanical supports at two sides of the membrane electrode, and the guide grooves on the guide plates are also used as channels for fuel and oxidant to enter the surfaces of the anode and the cathode and as channels for taking away water generated in the operation process of the fuel cell.

In order to increase the total power of the whole proton exchange membrane fuel cell, two or more single cells can be connected in series to form a battery pack in a straight-stacked manner or connected in a flat-laid manner to form a battery pack. In the direct-stacking and serial-type battery pack, two surfaces of one polar plate can be provided with flow guide grooves, wherein one surface can be used as an anode flow guide surface of one membrane electrode, and the other surface can be used as a cathode flow guide surface of another adjacent membrane electrode, and the polar plate is called a bipolar plate. A series of cells are connected together in a manner to form a battery pack. The battery pack is generally fastened together into one body by a front end plate, a rear end plate and a tie rod.

A typical battery pack generally includes: (1) the fuel (such as hydrogen, methanol or hydrogen-rich gas obtained by reforming methanol, natural gas and gasoline) and the oxidant (mainly oxygen or air) are uniformly distributed in the diversion trenches of the anode surface and the cathode surface; (2) the inlet and outlet of cooling fluid (such as water) and the flow guide channel uniformly distribute the cooling fluid into the cooling channels in each battery pack, and the heat generated by the electrochemical exothermic reaction of hydrogen and oxygen in the fuel cell is absorbed and taken out of the battery pack for heat dissipation; (3) the outlets of the fuel gas and the oxidant gas and the corresponding flow guide channels can carry out liquid and vapor water generated in the fuel cell when the fuel gas and the oxidant gas are discharged. Typically, all fuel, oxidant, and cooling fluid inlets and outlets are provided in one or both end plates of the fuel cell stack.

At present, an air delivery device of a fuel cell engine which operates at normal pressure and is produced by Shanghai Shenli science and technology Limited company adopts an air blower to deliver air, and delivers the air into a fuel cell stack through a rapidly rotating impeller to perform electrochemical reaction. At present, the design of the blower in the market is that a motor 2 drives the fan blades. The motor 2 is horizontal, and the wind drum 1 of the fan is vertical to the rotating shaft of the motor 2. The whole fan is arranged by taking the fan as a base to form a mounting frame for fixing. The wind drum 1 of the fan forms a vertical angle with the ground. As shown in fig. 1, 1 is a wind drum, 2 is a motor, 3 is a wind suction port, 4 is a wind outlet port, and 5 is a fixed base.

At present, the air delivery device in the fuel cell engine which operates at normal pressure of Shanghai Shenli science and technology is mainly installed in the engines of the following two types of vehicles.

1. In a fuel cell engine car, the engine is mounted in a flat manner. The whole fuel cell engine is tiled and fixed on the car chassis.

2. In the city bus with fuel cell engine, the installation mode may be flat. The air delivery device is mounted on the roof of a city bus.

The two vehicle type tiled installation modes have no way to meet the flat tiled installation requirement of the fuel cell engine due to the factthat the diameter of the air drum of the fan is large.

Disclosure of Invention

The utility model aims at overcoming the defects of the prior art and providing a fuel cell engine air conveying device which is operated at normal pressure and has reasonable design and compact structure.

The utility model discloses the purpose can be realized through technical scheme as follows: the utility model provides a fuel cell engine air conveyor of ordinary pressure operation, includes motor, windy drum, the motor establish a side end face at the windy drum to the rotation axis of this motor is perpendicular with the windy drum, the windy drum on be equipped with inlet scoop, tell the wind gap, its characterized in that still includes at least one mounting hole, this mounting hole is established at another side end face of windy drum to be the axial setting with the windy drum, perhaps this mounting hole is established at the tail end of motor, and be the axial setting with the motor.

The mounting holes are 3-5.

The motor is a flat motor.

The air suction opening and the air outlet are formed in the end face of the motor side of the air drum, and the air suction opening, the air outlet and the air drum are axially arranged.

The air suction opening and the air outlet are arranged on the circumferential surface of the air drum, and the air suction opening, the air outlet and the air drum are arranged in the radial direction.

The wind drum is directly installed as an installation base, and the end face of the wind drum is parallel to the ground.

The motor is directly installed as an installation base, and a rotating shaft of the motor is vertical to the ground.

Compared with the prior art, the utility model discloses a motor of flat and the tiled installation structure of drum integration can adapt to different installation space, can not surpass the whole height of whole fuel cell engine.

Drawings

FIG. 1 is a schematic diagram of a prior art structure;

fig. 2 is a schematic side view of embodiment 1 of the present invention;

fig. 3 is another schematic side view of embodiment 1 of the present invention;

fig. 4 is a schematic structural diagram of embodiment 2 of the present invention;

fig. 5 is a schematic structural diagram of embodiment 3 of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments.

The utility model discloses including two kinds of technical scheme under the overall frame that relates to air-blower tiled installation:

1. the wind drum of the blower is directly used as a mounting base frame to be mounted, the wind drum is parallel to the ground, the driving motor is also made into a flat type, and the rotating shaft of the motor is vertical to the ground. As shown in fig. 2 and 3: 1 is a wind drum, 2' is a flat motor, 3 is an air suction opening, and 4 is an air outlet. When the blower is installed, the blower is directly laid and fixed according to the direction of the blower shown in the figure.

2. The motor is directly used as a mounting frame for mounting the base, but the wind drum is still parallel to the ground, and the motor shaft is vertical to the ground. As shown in fig. 4: 1 is a wind drum, 2' is a flat motor, 3 is an air suction opening, and 4 is an air outlet. When the blower is installed, the blower is directly placed and fixed horizontally according to the direction of the blower shown in the figure, namely the blower in the proposal 1 is installed in an inverted way.

The installation method of the two air conveying devices adopts a structure that the air drum and the motor are integrated and are flat, and the air conveying devices can be flatly paved on the chassis of the car and the top of the city bus, so that the flat distribution of the air conveying devices of the fuel cell engine can be ensured. Certainly, the air suction opening and the air outlet opening of the air blower can be specially designed according to actual requirements. As shown in fig. 5: the air suction opening and the air outlet are designed on the air drum, 3 is the air suction opening, and 4 is the air outlet. The air suction opening and the air outlet opening can be horizontally placed, fixed and inverted through a specially designed blower.

Example 1

As shown in fig. 2 and fig. 3, an air delivery device of a fuel cell engine operating at normal pressure of 50 kw includes a flat motor 2 ' (diameter is 170mm) and a wind drum 1 (diameter is 360mm), the motor 2 ' is disposed on one side end face of the wind drum 1, a rotation shaft of the motor 2 ' is perpendicular to the wind drum 1, a flattening height of the whole air delivery device is 280mm, the wind drum 1 is provided with an air suction port 3 and an air discharge port 4, the air suction port 3 and the air discharge port 4 are disposed on a motor side end face of the wind drum 1, and the air suction port 3 and the air discharge port 4 are axially disposed with the wind drum 1; the wind drum is characterized by further comprising three mounting holes 6 which are uniformly arranged, wherein the mounting holes 6 are formed in the end face of the other side of the wind drum 1 and are axially arranged with the wind drum 1; the wind drum 1 is directly used as a mounting base to be mounted, and the end face of the wind drum 1 is parallel to the ground.

Example 2

As shown in fig. 4, an air conveying device of a 50 kw fuel cell engine operating at normal pressure comprises a flat motor 2 (diameter phi 170mm) and an air drum 1 (diameter phi 360mm), wherein the motor 2 'is arranged on one side end face of the air drum 1, a rotating shaft of the motor 2' is perpendicular to the air drum 1, the flattening height of the whole air conveying device is 280mm, the air drum 1 is provided with an air suction port 3 and an air discharge port 4, the air suction port 3 and the air discharge port 4 are arranged on the end face of the motor side of the air drum 1, and the air suction port 3 and the air discharge port 4 are axially arranged with the air drum 1; the motor is characterized by further comprising five mounting holes 6 which are uniformly arranged, wherein the mounting holes 6 are formed in the tail end of the motor 2' and are axially arranged with the motor 2; the motor 2' is directly installed as an installation base, and the rotating shaft of the motor is vertical to the ground.

Example 3

As shown in fig. 5, an air delivery device of a fuel cell engine operating at normal pressure of 50 kw has an air inlet 3 and an air outlet 4 arranged on the circumferential surface of an air drum 1, and the air inlet 3 and the air outlet 4 are arranged radially with the air drum 1; the rest of the structure is the same as in example 1.

Claims (7)

1. The utility model provides a fuel cell engine air conveyor of ordinary pressure operation, includes motor, windy drum, the motor establish a side end face at the windy drum to the rotation axis of this motor is perpendicular with the windy drum, the windy drum on be equipped with inlet scoop, tell the wind gap, its characterized in that still includes at least one mounting hole, this mounting hole is established at another side end face of windy drum to be the axial setting with the windy drum, perhaps this mounting hole is established at the tail end of motor, and be the axial setting with the motor.

2. The air delivery device for the fuel cell engine running at normal pressure according to claim 1, wherein 3-5 mounting holes are formed.

3. The ambient operating fuel cell engine air delivery system of claim 1, wherein the electric motor is a flat motor.

4. The air delivery device for the fuel cell engine running at normal pressure according to claim 1 or 3, wherein the air suction opening and the air discharge opening are arranged on the motor side end face of the air drum, and the air suction opening and the air discharge opening are arranged axially with the air drum.

5. The air delivery device for the fuel cell engine operating under normal pressure according to claim 1 or 3, wherein the air suction opening and the air discharge opening are arranged on the circumferential surface of the air drum, and the air suction opening and the air discharge opening are arranged in a radial direction with the air drum.

6. An ambient-pressure-operated fuel cell engine air delivery system according to claim 1, wherein the air drum is mounted directly as a mounting base and the end face of the air drum is parallel to the ground.

7. An ambient operating fuel cell engine air delivery system according to claim 1, wherein the motor is mounted directly as a mounting base and the axis of rotation of the motor is perpendicular to the ground.

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