Flow guide cover and heat dissipation device of fuel cell

Abstract

The utility model relates to a battery assembly, and provides a flow guide cover and a heat dissipation device of a fuel battery. The flow guide cover comprises a cover cap used for sealing and covering a heat dissipation module of the fuel cell, at least one side wall of the cover cap is of an arc curved surface structure, an exhaust pipe is communicated with an inner cavity of the cover cap, the flow guide cover forms a closed space for the heat dissipation module, the direct influence of the external environment on the heat dissipation module is effectively isolated, the cover cap smoothly guides hot air to flow, and the heat dissipation efficiency is improved. And the cover cap shields rain, snow and sunlight, so that the heat dissipation module and other components are prevented from being corroded.

Description

Technical Field

[0001] The present disclosure relates to a battery assembly, and more particularly to a flow guide cover, and also to a heat dissipation device for a fuel cell. Background Art

[0002] With the development and maturity of hydrogen fuel cells, they have been widely installed and developed rapidly in the commercial field of heavy-duty trucks, and various manufacturers in the industry have launched fuel cell heavy-duty truck products. The industry's technical direction is gradually developing towards high-power fuel cell systems. The heat dissipation requirements of fuel cell systems are also increasing with the increase in power. The power consumption and volume of the heat dissipation module are becoming higher and higher, which has brought difficulties to the integrated layout, electrical safety and efficiency of the heat dissipation module of the whole vehicle.

[0003] At present, due to the large size of the radiator, the chassis space of the whole vehicle cannot meet the needs of its layout. The cooling module is placed on the top of the hydrogen storage bottle group. The exhaust pipe of the radiator and the expansion kettle connected to the water pump inlet of the fuel-electric system also need to be placed on the top of the radiator. Long-term exposure to sunlight and rain and snow will corrode it, posing a hidden danger to the electrical safety of the whole vehicle. Utility Model Content

[0004] The technical problem to be solved by the present disclosure is, on the one hand, to provide a guide cover to solve the problem that the heat dissipation module and the heat dissipation exhaust pipe are connected to the expansion kettle of the fuel-electric system water pump inlet, which are aged due to long-term corrosion by sunlight and rain and snow, posing a hidden danger to electrical safety.

[0005] On the other hand, the technical problem to be solved by the present disclosure is to provide a heat dissipation device for a fuel cell to solve the problem that the heat dissipation module and its components are placed externally, and are exposed to sunlight and rain and snow for a long time, causing equipment aging and posing hidden dangers to electrical safety.

[0006] To solve the above technical problems, an embodiment of the present disclosure provides a guide cover for use in a heat dissipation module of a fuel cell, comprising a cover for sealing and covering the heat dissipation module of the fuel cell, at least one side wall of the cover having a circular arc curved structure, and an exhaust duct connected to the inner cavity of the cover.

[0007] In some embodiments, the cover includes a guide plate with an arc curved surface structure and a side wall located around the guide plate. The cover body and the side wall cooperate to form a hollow cover with an open end.

[0008] In some embodiments, the guide plate is an arc-shaped curved surface structure that protrudes toward the opening end away from the cover.

[0009] In some embodiments, the heat dissipation module is installed on one side of the fuel cell, and the open end of the cover is sealed and connected to the bracket of the fuel cell.

[0010] In some embodiments, a cover mounting hole is provided at the open end of the cover, a bracket mounting hole corresponding to the cover mounting hole is provided on the bracket, and the cover mounting hole and the bracket mounting hole are connected by a fastener.

[0011] In some embodiments, an overlap edge for abutting against the bracket is formed at one end of the side wall located at the open end of the cover, and a cover mounting hole is provided on the overlap edge.

[0012] In some embodiments, the guide plate and the side wall are an integrally formed part; or the guide plate and the side wall are welded.

[0013] Another aspect of the present disclosure provides a heat dissipation device for a fuel cell, comprising a heat dissipation module for dissipating heat from the fuel cell and the above-mentioned guide cover.

[0014] In some embodiments, the outlet of the exhaust duct is sealed and connected to the heat recovery device.

[0015] In some embodiments, an exhaust duct mounting hole is provided at the outlet end of the exhaust duct, and the heat recovery device is provided with a recovery device mounting hole corresponding to the exhaust duct mounting hole, and the exhaust duct mounting hole and the recovery device mounting hole are detachably connected.

[0016] Through the above technical scheme, the guide cover provided by the present invention includes a cover for sealing and covering the heat dissipation module of the fuel cell, at least one side wall of the cover is in an arc curved structure, the exhaust pipe is connected to the inner cavity of the cover, and the guide cover completely covers the heat dissipation module to form a closed space, which effectively isolates the direct influence of the external environment on the heat dissipation module. The side wall of the cover adopts an arc curved structure to smoothly guide the flow of hot air, reduce air flow resistance and the generation of vortices, and discharge the gas from the exhaust pipe. The cover blocks rain, snow and sunlight to prevent the heat dissipation module and other components from being weathered and corroded. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a structural schematic diagram of an assembly guide cover of a heat dissipation module disclosed in an embodiment of the present disclosure;

[0019] Figure 2 is a schematic structural diagram of a cover disclosed in an embodiment of the present disclosure;

[0020] Figure 3 is a schematic structural diagram of a cover disclosed in an embodiment of the present disclosure;

[0021] Figure 4 is a schematic structural diagram of a heat dissipation module disclosed in an embodiment of the present disclosure;

[0022] Figure 5 is a schematic structural diagram of a heat recovery device disclosed in an embodiment of the present disclosure;

[0023] Figure 6 It is a schematic diagram of the structure of the heat recovery device disclosed in the embodiment of the present disclosure.

[0024] Description of reference numerals:

[0025] 1. Cover; 1-1. Guide plate; 1-2. Side wall; 1-3. Overlap edge; 3. Exhaust duct; 6. Bracket; 8. Heat dissipation module; 9. Fuel cell; 10. Cover mounting hole; 12. Exhaust duct mounting hole; 13. Air filter; 14. Flow meter; 15. Air compressor; 16. Expander; 17. Muffler; 18. Intercooler; 19. Humidifier; 20. Stop valve; 21. P sensor; 22. Fuel cell stack; 23. Back pressure valve; 24. Bypass valve. DETAILED DESCRIPTION

[0026] The following is a further detailed description of the embodiments of the present disclosure in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

[0027] The present disclosure provides these embodiments to make the present disclosure thorough and complete, and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0028] It should be noted that, in the description of the present disclosure, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0029] In addition, the words "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0030] It should also be noted that in the description of the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0031] All terms used in the present disclosure have the same meanings as those understood by those of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, for example, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined as such herein.

[0032] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0033] The present disclosure provides a flow guide cover for use in a heat dissipation module 8 of a fuel cell 9, see Figure 1 and Figure 4 , including a cover 1, the cover 1 is used to seal and cover the heat dissipation module 8 of the fuel cell 9, at least one side wall of the cover 1 is in an arc curved surface structure; an exhaust pipe 3, the exhaust pipe 3 is connected to the inner cavity of the cover 1. The cover 1 completely covers the heat dissipation module 8, forming a closed space, effectively isolating the direct impact of the external environment on the heat dissipation module 8. The side wall of the cover 1 adopts an arc curved surface structure to smoothly guide the flow of hot air, reduce air flow resistance and the generation of vortices, and the exhaust pipe 3 facilitates the outflow of gas, so that the cover 1 is installed on the heat dissipation module 8, can discharge hot air or other gases, and realize efficient heat exchange or gas circulation. The cover 1 blocks rain, snow and sunlight, and prevents the heat dissipation module 8 and other components from being weathered and corroded.

[0034] In some embodiments, see Figure 2 and Figure 3The cover 1 includes a guide plate 1-1 with an arc-shaped curved surface structure and a side wall 1-2 located around the guide plate 1-1. The cover body 1-1 cooperates with the side wall 1-2 to form a hollow cover 1 with an open end. The smooth curved surface of the guide plate 1-1 effectively guides and accelerates the airflow, reduces resistance and turbulence, and thus improves the airflow efficiency and heat dissipation performance. The side wall 1-2 is arranged around the edge of the guide plate 1-1 and closely cooperates with the guide plate 1-1 to form a closed edge of the cover 1, thereby improving the structural stability and strength support of the cover 1, while ensuring the sealing of the cover 1, preventing external pollutants from invading, and protecting the internal components of the cover 1.

[0035] In some embodiments, the guide plate 1-1 is in the form of an arc-shaped curved surface structure that protrudes toward the open end away from the cover 1. When the guide plate 1-1 protrudes relative to the open end of the cover 1, the internal space is expanded, providing sufficient space for the arrangement of components, which is conducive to the integration of more functional modules or battery components. When the guide plate 1-1 is recessed, the overall external space occupied by the cover 1 is reduced, which is conducive to the compactness of the equipment or system structure and the optimization of space utilization. The arc-shaped curved surface structure of the guide plate 1 is determined according to actual needs, which not only ensures the airflow management and heat dissipation efficiency of the cover 1, but also meets the specific needs of the space layout under different working conditions, thereby improving the adaptability and practicality of the cover 1.

[0036] In some embodiments, see Figure 4 The heat dissipation module 8 is installed on one side of the fuel cell 9, the open end of the cover 1 is sealed and connected to the bracket 6 of the fuel cell 9, and the heat dissipation module 8 is directly installed next to the fuel cell 9, so that the heat generated by the fuel cell 9 is quickly dissipated by the heat dissipation module 8. Combined with the cover 1, the operating temperature of the fuel cell 9 is reduced, which not only improves the operating efficiency and stability of the fuel cell 9, but also extends its service life. The open end of the cover 1 is sealed and connected to the bracket 6 to construct a closed thermal management system to prevent the intrusion of dust, moisture and other pollutants, effectively isolate the external environment from interfering with the fuel cell 9 and the heat dissipation module 8, and at the same time maintain the cleanliness of the heat dissipation module 8 and other components to reduce maintenance requirements.

[0037] In some embodiments, the cover 1 is provided with a cover mounting hole 10 at the open end, and the bracket 6 is provided with a bracket mounting hole corresponding to the cover mounting hole 10. The cover mounting hole 10 and the bracket mounting hole are connected by fasteners, and the cover 1 is quickly and accurately fixed to the fuel cell bracket 6 through the preset mounting holes and fasteners; for example: bolts, screws, etc., and the simple installation method is conducive to reducing assembly time and cost, and is also convenient for quick removal of the cover 1 during future maintenance or overhaul, thereby improving maintainability. In addition, a sealing gasket or sealant is used during assembly to improve air tightness.

[0038] In some embodiments, a lap edge 1-3 for abutting against the bracket 6 is formed at one end of the side wall 1-2 located at the open end of the cover 1, and a cover mounting hole 10 is provided on the lap edge 1-3. The lap edge 1-3 increases the contact area between the side wall 1-2 and the bracket 6, thereby significantly improving the connection stability between the cover 1 and the bracket 6.

[0039] In some embodiments, the deflector 1-1 and the side wall 1-2 are integrally formed; or the deflector 1-1 and the side wall 1-2 are welded. The integrally formed cover 1 has no seams, which improves the continuity and strength of the overall structure. Welding allows the deflector 1-1 and the side wall 1-2 to be independently designed and manufactured, and then assembled, providing design and manufacturing flexibility for complex shapes or large structures. Based on a comprehensive consideration of product performance, cost, production efficiency and subsequent maintenance requirements, choose whether to connect the deflector 1-1 and the side wall 1-2 by integral molding or welding.

[0040] The present disclosure also provides a heat dissipation device for a fuel cell, including a heat dissipation module 8 for dissipating heat from a fuel cell 9 and the above-mentioned guide cover. The guide cover completely covers the heat dissipation module 8 to form a closed space, effectively isolating the direct impact of the external environment on the heat dissipation module 8, which is conducive to maintaining the fuel cell 9 within a suitable operating temperature range. The exhaust pipe 3 is directly connected to the inner cavity of the guide cover, which realizes the effective extraction or reuse of hot air. Reuse avoids the waste of heat energy, and guides this part of the heat energy to other systems of the vehicle, such as heating the air conditioning system, heating the auxiliary battery, etc., to achieve efficient recovery and utilization of energy and improve the overall energy efficiency of the vehicle.

[0041] In some embodiments, see Figure 5 and Figure 6 The outlet of the exhaust pipe 3 is sealed and connected to the heat recovery device. The outlet of the exhaust pipe 3 is softly connected to the heat recovery device, and the hot air generated by the heat dissipation module 8 is recovered through the heat recovery device and reused for the cathode air supply of the fuel cell system, the whole vehicle air conditioning heating, the anode hydrogen supply heating, the power battery heating and the vehicle-mounted liquid hydrogen system, reducing the dependence on a separate heating system, such as: air compressor, electric heater, thereby greatly reducing the overall power consumption of the system and improving energy efficiency.

[0042] For example, Figure 5 As shown, the heat recovery device is connected to the anode of the fuel cell system to recover the hot air for heating the anode hydrogen supply, which can effectively increase the hydrogen temperature, reduce or even eliminate the condensation of water at the anode inlet of the stack 22, reduce and eliminate the flooding of the anode inlet of the stack 22, prevent the degradation of electrochemical performance caused by the accumulation of condensed water, and enhance the stability and output efficiency of the fuel cell; Figure 6As shown, the heat recovery device is connected to the vehicle air conditioning system to use hot air for heat exchange heating or hot air purification in the vehicle air conditioning system, which not only reduces the power consumption of the traditional heating system, but also improves the passenger comfort of the vehicle in cold climates, and enhances the environmental adaptability and driving experience of the vehicle. In addition, the heat recovery device can also be connected to the cathode of the fuel cell system to recover hot air for the air filter inlet of the cathode system of the fuel cell system to supply air, reduce the work of the system air compressor 15, and reduce the power consumption of the system; or the heat recovery device is connected to the power battery of the whole vehicle to recover hot air for heating the power battery of the whole vehicle; or the heat recovery device is connected to the on-board liquid hydrogen system to recover hot air for system heat exchange to complete the gasification of liquid hydrogen.

[0043] In some embodiments, see Figure 2 An exhaust duct mounting hole is provided at the outlet end of the exhaust duct 3, and the heat recovery device is provided with a recovery device mounting hole corresponding to the exhaust duct mounting hole. The exhaust duct mounting hole and the mounting hole on the recovery device are detachably connected, so that the exhaust duct and the heat recovery device can be quickly and accurately connected and fixed.

[0044] In order to better understand the technical solution of the present disclosure, the following is an explanation in combination with relatively preferred technical features.

[0045] See also Figure 1 and Figure 2 The present disclosure provides a guide cover and a heat dissipation device for a fuel cell, including a cover 1 for sealingly covering a heat dissipation module 8 of a fuel cell 9. The heat dissipation module 8 is installed on one side of the fuel cell 9, and the open end of the cover 1 is sealed and connected to the bracket 6 of the fuel cell 9. At least one side wall of the cover 1 is in an arc curved surface structure, and an exhaust duct 3 is connected to the inner cavity of the cover 1. The cover 1 includes a guide plate 1-1 in an arc curved surface structure and a side wall 1-2 located on the periphery of the guide plate 1-1. The cover body 1-1 cooperates with the side wall 1-2 to form a hollow cover 1 with an open end. The side wall 1-2 is formed with an overlapping edge 1-3 to abut against the bracket 6. The overlapping edge 1-3 is provided with a cover mounting hole 10. The cover mounting hole 10 and the bracket mounting hole are connected by fasteners. The guide plate 1-1 is in an arc curved surface structure protruding in the direction away from the open end of the cover 1. The exhaust duct 3 is provided with an exhaust duct mounting hole 12. Heat recovery The device is provided with a recovery device mounting hole corresponding to the exhaust pipe mounting hole 12, the exhaust pipe mounting hole 12 and the recovery device mounting hole are detachably connected, the guide plate 1-1 and the side wall 1-2 are integrally formed, the outlet of the exhaust pipe 3 is sealed and connected to the heat recovery device, and the heat recovery device includes a closely connected air filter 13, a flow meter 14, an air compressor 15, an expander 16, a muffler 17, and an intercooler 18, a humidifier 19, a stop valve 20, and a P sensor 21 assembly connected to the air compressor, so as to achieve efficient recovery and reuse of hot air. Figure 5 and Figure 6The hot air from the exhaust pipe 3 is preliminarily purified by the air filter 13 to remove impurities, and then enters the flow meter 14 to accurately measure the air flow entering the system. The accurately measured air is then sent to the air compressor 15. During this process, the air is compressed and pressurized to provide a power basis for subsequent processes. The compressed air then passes through the intercooler 18 to reduce its temperature while ensuring the pressure, increase the air density and oxygen concentration, and thus improve the efficiency of the fuel cell stack 22. The air then passes through the humidifier 19 to increase the humidity, optimize the reaction environment of the fuel cell, and ensure the efficient conduct of the electrochemical reaction. The system is also provided with a stop valve 20 for controlling the switch of the air flow; and a P sensor 21 to monitor and feedback the system operation status to ensure accurate control of the operation. Finally, the treated air is supplied to the fuel cell stack 22 to participate in the chemical reaction and be converted into electrical energy. Furthermore, the air filter 13, the flow meter 14 and the air compressor 15 are used as the starting point to ensure the purification and pressurization of the air. The air compressor 15 is directly connected to the expander 16, and the high-pressure air generated by the air compressor 15 is used for energy conversion. At the same time, the hot air is introduced through the exhaust pipe 3, and the heat energy is effectively recovered. The bypass valve 24 and the back pressure valve 23 are used to flexibly adjust the air flow path and pressure balance to ensure the stable operation of the heat recovery device under various working conditions.

[0046] In summary, the guide cover and the heat dissipation device of the fuel cell disclosed in the present invention have the following advantages: the guide cover covers the heat dissipation module 9 to form a closed space, smoothly guides the flow of hot air, reduces air flow resistance and the generation of vortices, and discharges the gas from the exhaust pipe 3, thereby preventing the heat dissipation module and other components from being exposed to weathering and corrosion. At the same time, the recovery device connected to the exhaust pipe 3 provides heating for the air-conditioning system and assists the battery to work, thereby realizing energy recovery and utilization.

[0047] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0048] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A flow guide cover, used in a heat dissipation module (8) of a fuel cell (9), characterized in that: include: A cover (1), the cover (1) being used to seal and cover the heat dissipation module (8), and at least one side wall of the cover (1) being in a circular arc curved structure; An exhaust pipe (3), wherein the exhaust pipe (3) is in communication with the inner cavity of the cover (1).

2. The guide cover according to claim 1, characterized in that: The cover (1) comprises a guide plate (1-1) with a circular arc curved surface structure and a side wall (1-2) located on the periphery of the guide plate (1-1); the guide plate (1-1) and the side wall (1-2) cooperate to form the cover (1) which is hollow and has an open end.

3. The guide cover according to claim 2, characterized in that: The guide plate (1-1) is in the form of an arc-shaped curved surface structure that protrudes in a direction away from the opening end of the cover (1).

4. The guide cover according to claim 2, characterized in that: The heat dissipation module (8) is installed on one side of the fuel cell (9), and the open end of the cover (1) is sealedly connected to the bracket (6) of the fuel cell (9).

5. The guide cover according to claim 4, characterized in that: The open end of the cover (1) is provided with a cover mounting hole (10), the bracket (6) is provided with a bracket mounting hole corresponding to the cover mounting hole (10), and the cover mounting hole (10) and the bracket mounting hole are connected by a fastener.

6. The guide cover according to claim 5, characterized in that: An overlap edge (1-3) for abutting against the bracket (6) is formed on one end of the side wall (1-2) located at the open end of the cover (1), and the cover mounting hole (10) is provided on the overlap edge (1-3).

7. The guide cover according to any one of claims 2 to 6, characterized in that: The guide plate (1-1) and the side wall (1-2) are integrally formed parts; or The guide plate (1-1) is welded to the side wall (1-2).

8. A heat dissipation device for a fuel cell, characterized in that: It comprises a heat dissipation module (8) for dissipating heat for the fuel cell (9) and a guide cover according to any one of claims 1 to 7.

9. The heat dissipation device for a fuel cell according to claim 8, characterized in that: The outlet of the exhaust pipe (3) is sealed and connected to the heat recovery device.

10. The heat dissipation device for a fuel cell according to claim 9, characterized in that: An exhaust duct mounting hole (12) is provided at the outlet end of the exhaust duct (3), and the heat recovery device is provided with a recovery device mounting hole corresponding to the exhaust duct mounting hole (12), and the exhaust duct mounting hole (12) and the recovery device mounting hole are detachably connected.

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