Self-cleaning device applied to air inlet of air-cooled fuel cell

Abstract

The utility model provides a self-cleaning device applied to an air inlet of an air-cooled fuel cell, which relates to the field of heat dissipation of fuel cells and comprises a cell protection box, a fuel cell is mounted in the cell protection box, an air inlet is arranged on one side of the cell protection box, an air outlet is arranged on the other side of the fuel cell, and the air inlet is communicated with the air outlet. A first fixing frame and a second fixing frame are sequentially arranged on the inner side of the air inlet from outside to inside, a first filter screen is arranged on the side, close to the second fixing frame, of the first fixing frame, and a rotating shaft is installed in the middle of the first fixing frame in a penetrating mode; according to the utility model, through the arrangement of the second fan blades, the second fan blades can rotate when airflow passes through the vicinity of the second fan blades, and all the cleaning strips are driven by the second fan blades to rotate, so that the effect of automatically cleaning the first filter screen in the air inlet is achieved; therefore, the problems that the first filter screen is blocked by dust, the load of the cooling fan is increased, the cooling efficiency is reduced, and the battery performance is reduced are avoided or reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat dissipation of fuel cells, in particular to a self-cleaning device applied to an air inlet of an air-cooled fuel cell. Background Art

[0002] A fuel cell is a power generation device that converts the chemical energy in the fuel into electrical energy mainly through redox reactions with oxygen or other oxidants.

[0003] Fuel cells need to dissipate heat during use. Common heat dissipation methods include air cooling, which uses a fan to increase the air flow rate near the battery to take away the heat emitted by the fuel cell. In the process of air flowing near the battery, in order to prevent dust in the air from accumulating on the surface of the fuel cell, a filter needs to be installed at the air inlet. However, after the filter is used for a long time, dust will accumulate on the surface of the filter, making it difficult for air to pass through the filter, which will not only increase the fan load, but also reduce the heat dissipation efficiency and affect the performance of the fuel cell.

[0004] In summary, the present invention provides a self-cleaning device applied to the air inlet of an air-cooled fuel cell to solve the above-mentioned problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a self-cleaning device applied to the air inlet of an air-cooled fuel cell, which is achieved by the following specific technical means:

[0006] A self-cleaning device applied to the air inlet of an air-cooled fuel cell comprises a battery protection box, wherein a fuel cell is installed inside the battery protection box, an air inlet is arranged on one side of the battery protection box, and an air outlet is arranged on the other side of the fuel cell, a first fixing frame and a second fixing frame are arranged on the inner side of the air inlet in sequence from the outside to the inside, a first filter is arranged on the side of the first fixing frame close to the second fixing frame, a rotating shaft is installed through the middle of the first fixing frame, a first fan blade is fixedly connected to the end of the rotating shaft close to the fuel cell, and the end of the rotating shaft away from the fuel cell is rotatably connected to the second fixing frame, a rotating ring is mounted on the surface of the rotating shaft between the first fixing frame and the second fixing frame, a plurality of cleaning strips are fixedly arranged on the outer side of the rotating ring, and a cleaning scraper is arranged on the side of the cleaning strip close to the first filter.

[0007] Furthermore, the cleaning strip is arranged radially along the center of the rotating ring at one end close to the rotating ring, and a bend is arranged in the middle of the cleaning strip, and the inner angle of the bend is between 135 degrees and 150 degrees.

[0008] Furthermore, a dust exhaust port is provided at the bottom of the air inlet between the first fixing frame and the second fixing frame.

[0009] Furthermore, a third fixing frame is provided inside the air outlet, a second filter is provided on a side of the third fixing frame close to the fuel cell, and a second fan blade is rotatably mounted on a side of the third fixing frame close to the fuel cell.

[0010] Furthermore, a motor is fixedly mounted on a side of the third fixing frame away from the fuel cell, and an output end of the motor is drivingly connected to the second fan blade.

[0011] Furthermore, two limiting prisms are symmetrically arranged on the surface of the rotating shaft between the first fixing frame and the second fixing frame, and two limiting grooves are symmetrically arranged on the inner side of the rotating ring. The two limiting prisms are respectively inserted into the two limiting grooves, and the cross-sectional dimensions of the limiting grooves and the limiting prisms are matched.

[0012] Furthermore, a spring is sleeved on the surface of the rotating shaft between the rotating ring and the second fixing frame, and two ends of the spring are respectively against opposite sides of the rotating ring and the second fixing frame.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model sets a second fan blade, which will cause the second fan blade to rotate when air flows near the second fan blade, and drives each cleaning strip to rotate through the second fan blade, thereby achieving the effect of automatically cleaning the first filter in the air inlet, thereby avoiding or reducing the problem of the first filter being clogged by dust, resulting in an increase in the load of the cooling fan, and a decrease in heat dissipation efficiency, resulting in a decrease in battery performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present disclosure, and together with the specification, are used to explain the principles of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0016] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0017] Figure 2 It is an exploded schematic diagram of the internal structure of the air inlet of the utility model;

[0018] Figure 3 It is a cross-sectional schematic diagram of the air outlet of the utility model;

[0019] Figure 4 This utility model Figure 2 A local enlarged schematic diagram of the middle A;

[0020] Figure 5 This utility model Figure 2 A local enlarged schematic diagram of point B in the middle.

[0021] In the figure:

[0022] 1. Battery protection box; 2. Fuel cell; 3. Air inlet; 4. Air outlet; 5. First fixed frame; 6. Second fixed frame; 7. First filter; 8. Rotating shaft; 9. First fan blade; 10. Rotating ring; 11. Cleaning strip; 12. Cleaning scraper; 13. Dust outlet; 14. Third fixed frame; 15. Second filter; 16. Second fan blade; 17. Motor; 18. Limiting prism; 19. Limiting groove; 20. Spring. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0024] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments, and are not intended to limit the present disclosure. The singular forms "a", "said" and "the" used in the embodiments of the present disclosure and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two, and other quantifiers are similar.

[0025] It should be understood that, although the terms first, second, third, etc. may be used to describe in the disclosed embodiments, these descriptions should not be limited to these terms. These terms are only used to distinguish the described objects. For example, without departing from the scope of the disclosed embodiments, the first may also be referred to as the second, and similarly, the second may also be referred to as the first. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include the plural forms, unless the context clearly indicates other meanings.

[0027] In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] It should also be noted that the term "includes", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the commodity or device including the elements.

[0029] like Figure 1-5As shown, the utility model provides a self-cleaning device applied to the air inlet of an air-cooled fuel cell, comprising a battery protection box 1, wherein a temperature sensor is arranged inside the battery protection box 1 to detect the temperature of the fuel cell 2, thereby changing the rotation speed of the second fan blade 16, wherein the fuel cell 2 is installed inside the battery protection box 1, an air inlet 3 is arranged on one side of the battery protection box 1, and an air outlet 4 is arranged on the other side of the fuel cell 2, wherein the number of the air inlet 3 and the number of the air outlet 4 are both multiple, and a first fixing frame 5 and a second fixing frame 6 are arranged in sequence from the outside to the inside on the inside of the air inlet 3, and a first filter screen 7 is arranged on the side of the first fixing frame 5 close to the second fixing frame 6, and the air entering from the air inlet 3 is filtered by the first filter screen 7, thereby blocking dust in the air outside the battery protection box 1, and the middle part of the first fixing frame 5 A rotating shaft 8 is installed throughout, and the rotating shaft 8 is rotatably connected to the first fixed frame 5. The end of the rotating shaft 8 close to the fuel cell 2 is fixedly connected to the first fan blade 9. In the process of airflow flowing around the first fan blade 9, it will drive the first fan blade 9 to rotate, and the first fan blade 9 will drive the rotating shaft 8 to rotate. The end of the rotating shaft 8 away from the fuel cell 2 is rotatably connected to the second fixed frame 6, and the end of the rotating shaft 8 away from the fuel cell 2 is rotatably connected to the second fixed frame 6. A rotating ring 10 is mounted on the surface of the rotating shaft 8 between the first fixed frame 5 and the second fixed frame 6. A plurality of cleaning strips 11 are fixedly arranged on the outer side of the rotating ring 10. A cleaning scraper 12 is arranged on the side of the cleaning strip 11 close to the first filter screen 7. In the process of rotation of the rotating ring 10, the cleaning scraper 12 on the cleaning strip 11 can drive the dust on the surface of the filter screen to move.

[0030] Among them, one end of the cleaning strip 11 close to the rotating ring 10 is radially arranged along the center of the rotating ring 10, and a bend is arranged in the middle of the cleaning strip 11, and the inner angle of the bend is between 135 degrees and 150 degrees. During the rotation process, the bent part of the cleaning strip 11 will form an inclination angle with the radially arranged part of the cleaning strip 11, and the dust swept by the cleaning scraper 12 is pushed away from the center of the first filter 7 through the inclination angle.

[0031] A dust outlet 13 is provided at the bottom of the air inlet 3 between the first fixing frame 5 and the second fixing frame 6 , and the dust pushed away from the center of the first filter screen 7 will eventually leave the air inlet 3 through the dust outlet 13 .

[0032] Among them, a third fixing frame 14 is arranged on the inner side of the air outlet 4, and a second filter screen 15 is arranged on the side of the third fixing frame 14 close to the fuel cell 2. The air outlet 4 is protected by the second filter screen 15. A second fan blade 16 is also rotatably installed on the side of the third fixing frame 14 close to the fuel cell 2.

[0033] Among them, a motor 17 is fixedly installed on the side of the third fixing frame 14 away from the fuel cell 2, and the output end of the motor 17 is transmission-connected to the second fan blade 16. The second fan blade 16 is driven to rotate by the motor 17, thereby increasing the air flow rate in the battery protection box 1, thereby achieving heat dissipation for the fuel cell 2.

[0034] Among them, two limiting prisms 18 are symmetrically arranged on the surface of the rotating shaft 8 between the first fixing frame 5 and the second fixing frame 6, and two limiting grooves 19 are symmetrically arranged on the inner side of the rotating ring 10. The two limiting prisms 18 are respectively inserted into the two limiting grooves 19, and the cross-sectional dimensions of the limiting grooves 19 and the limiting prisms 18 are adapted. Under the action of the limiting prisms 18 and the limiting grooves 19, the rotating ring 10 can not only move left and right on the surface of the rotating shaft 8, but also rotate synchronously with the rotating shaft 8.

[0035] Among them, a spring 20 is installed on the surface of the rotating shaft 8 between the rotating ring 10 and the second fixed frame 6, and the two ends of the spring 20 are respectively against the opposite sides of the rotating ring 10 and the second fixed frame 6. The spring 20 pushes the rotating ring 10 to approach the first fixed frame 5, so that the cleaning scraper 12 can always abut against the surface of the first filter 7.

[0036] Specific working principle:

[0037] Before using the utility model, first connect the utility model to the power supply and the controller. During the use of the utility model, the motor 17 can drive the second fan blade 16 to rotate at different speeds according to the temperature in the battery protection box 1, so as to extract the air and heat in the battery protection box 1. In this process, the air is extracted, which will form a negative pressure inside the battery protection box 1, and then the external fresh air is sucked into it from the air inlet 3. In the process of air passing through the inside of the air inlet 3, the airflow generated will cause the first fan blade 9 to rotate, and the first fan blade 9 drives the rotating shaft 8 to rotate, so that the rotating ring 10 drives each cleaning bar 11 to rotate. In the process of the cleaning bar 11 rotating, the cleaning scraper 12 will continuously sweep the dust on the surface of the first filter 7 into the dust outlet 13, so as to realize automatic cleaning of the first filter 7, thereby avoiding or reducing the problem that the first filter 7 is blocked by dust, resulting in an increase in the load of the cooling fan and a decrease in the heat dissipation efficiency, resulting in a decrease in battery performance.

[0038] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other. For the system or device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

[0039] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A self-cleaning device for use at an air inlet of an air-cooled fuel cell, comprising a battery protection box (1), a fuel cell (2) being installed inside the battery protection box (1), an air inlet (3) being provided on one side of the battery protection box (1), and an air outlet (4) being provided on the other side of the fuel cell (2), characterized in that: A first fixing frame (5) and a second fixing frame (6) are sequentially arranged on the inner side of the air inlet (3) from the outside to the inside; a first filter screen (7) is arranged on the side of the first fixing frame (5) close to the second fixing frame (6); a rotating shaft (8) is installed through the middle of the first fixing frame (5); a first fan blade (9) is fixedly connected to the end of the rotating shaft (8) close to the fuel cell (2); an end of the rotating shaft (8) away from the fuel cell (2) is rotatably connected to the second fixing frame (6); a rotating ring (10) is sleeved on the surface of the rotating shaft (8) between the first fixing frame (5) and the second fixing frame (6); a plurality of cleaning strips (11) are fixedly arranged on the outer side of the rotating ring (10); and a cleaning scraper (12) is arranged on the side of the cleaning strips (11) close to the first filter screen (7).

2. The self-cleaning device for the air inlet of an air-cooled fuel cell as claimed in claim 1, characterized in that: One end of the cleaning strip (11) close to the rotating ring (10) is arranged radially along the center of the rotating ring (10), and a bend is arranged in the middle of the cleaning strip (11), and the inner angle of the bend is between 135 degrees and 150 degrees.

3. The self-cleaning device for the air inlet of an air-cooled fuel cell as claimed in claim 1, characterized in that: A dust exhaust port (13) is provided at the bottom of the air inlet (3) between the first fixing frame (5) and the second fixing frame (6).

4. The self-cleaning device for the air inlet of an air-cooled fuel cell as claimed in claim 1, characterized in that: A third fixing frame (14) is arranged inside the air outlet (4), a second filter screen (15) is arranged on a side of the third fixing frame (14) close to the fuel cell (2), and a second fan blade (16) is rotatably mounted on a side of the third fixing frame (14) close to the fuel cell (2).

5. The self-cleaning device for the air inlet of an air-cooled fuel cell as claimed in claim 4, characterized in that: A motor (17) is fixedly mounted on a side of the third fixing frame (14) away from the fuel cell (2), and an output end of the motor (17) is drivingly connected to the second fan blade (16).

6. The self-cleaning device for the air inlet of an air-cooled fuel cell as claimed in claim 1, characterized in that: Two limiting prisms (18) are symmetrically arranged on the surface of the rotating shaft (8) between the first fixing frame (5) and the second fixing frame (6), and two limiting grooves (19) are symmetrically arranged on the inner side of the rotating ring (10), and the two limiting prisms (18) are respectively inserted into the two limiting grooves (19), and the cross-sectional dimensions of the limiting grooves (19) and the limiting prisms (18) are adapted.

7. The self-cleaning device for the air inlet of an air-cooled fuel cell as claimed in claim 1, characterized in that: A spring (20) is sleeved on the surface of the rotating shaft (8) between the rotating ring (10) and the second fixed frame (6), and two ends of the spring (20) respectively abut against opposite sides of the rotating ring (10) and the second fixed frame (6).

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