Cooling system of high-temperature solid oxide fuel cell

Abstract

The utility model provides a cooling system of a high-temperature solid oxide fuel cell, and belongs to the field of fuel cells. The system comprises a radiator, a cooling water pump, equipment to be cooled and a fuel cell power generation module, a first air inlet and a first air outlet are formed in the fuel cell power generation module, the first air outlet is connected with external air, and the radiator comprises a cold water side and a hot water side and is provided with a cold air pipe and a hot air pipe; the cold air pipe is communicated with external air, the hot air pipe is communicated with the first air inlet, the cold water side is connected with the cooling water pump, the cooling water pump is connected with the to-be-cooled equipment, and the to-be-cooled equipment is connected with the hot water side. By adopting the cooling system of the high-temperature solid oxide fuel cell provided by the embodiment of the utility model, the problem of lower energy utilization rate in the prior art can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fuel cell field, especially a kind of cooling system of high-temperature solid oxide fuel cell. BACKGROUND

[0002] When solid oxide fuel cell power generation system is running, due to its efficient electrochemical reaction, the working environment temperature is often higher, reaches 600 DEG C to 1000 DEG C. This high-temperature state proposes severe challenge to some key components, and excessive temperature can lead to material aging, performance decline or even system failure. Heat sink is usually used in power generation system to dissipate heat at key positions to improve its working efficiency.

[0003] In prior art, heat sink usually uses water cooling to cool equipment, cooling liquid becomes hot water after passing through high-temperature equipment, at this time, hot water in heat sink needs to be cooled, and in prior art, cooling fan is separately arranged to cool hot water, in the process of solid oxide fuel cell power generation, air needs to be introduced, and air needs to be heated for electrochemical reaction, in prior art, heat in heat sink is not recycled and utilized, but additional cooling fan is arranged to cool it, so that energy is wasted.

[0004] Cooling system in prior art usually uses separately arranged cooling fan to cool cooling liquid in heat sink, so that energy utilization rate is low. UTILITY MODEL CONTENTS

[0005] The utility model embodiment provides a kind of cooling system of high-temperature solid oxide fuel cell, can solve the problem of low energy utilization rate in prior art.The technical solution is as follows:

[0006] A kind of cooling system of high-temperature solid oxide fuel cell, comprising: heat sink, cooling water pump, equipment to be cooled and fuel cell power generation module,

[0007] The first air inlet and the first air outlet are arranged on the fuel cell power generation module, the first air outlet is connected with external air,

[0008] The heat sink includes cold water side and hot water side, cold gas pipe and hot gas pipe are arranged on the heat sink, the cold gas pipe and the hot gas pipe are arranged close to the hot water side, the cold gas pipe is communicated with external air, the hot gas pipe is communicated with the first air inlet, the cold water side is connected with the cooling water pump, the cooling water pump is connected with the equipment to be cooled, and the equipment to be cooled is connected with the hot water side.

[0009] Optionally, the fuel cell power generation module is externally provided with a fuel cell power generation module cavity, the fuel cell power generation module cavity is provided with a second air inlet and a second air outlet, the second air inlet is communicated with external air, and the second air outlet is connected with the cold air pipe.

[0010] Optionally, a temperature insulation layer is arranged between the fuel cell power generation module and the fuel cell power generation module cavity.

[0011] Optionally, the second air inlet is arranged at the bottom of the fuel cell power generation module cavity, and the radiator, the cooling water pump and the to-be-cooled equipment are arranged at the top of the fuel cell power generation module.

[0012] Optionally, an air filter is arranged between the hot air pipe and the first air inlet.

[0013] Optionally, the radiator is in a square structure, the radiator is provided with a cold water pipe and a hot water pipe, the cold water pipe and the hot water pipe are arranged at two sides of the radiator respectively, the cold air pipe and the hot air pipe are arranged at a side close to the hot water pipe, the cold water pipe is connected with the cooling water pump, the cooling water pump is connected with the to-be-cooled equipment, and the to-be-cooled equipment is connected with the hot water pipe.

[0014] Optionally, a cooling water tank is arranged between the cold water pipe and the cooling water pump.

[0015] Optionally, the pipeline is further arranged, and the to-be-cooled equipment comprises an air compressor controller, an air compressor, an anode tail gas circulating pump controller and an anode tail gas circulating pump, and the air compressor controller, the air compressor, the anode tail gas circulating pump controller and the anode tail gas circulating pump are connected through the pipeline.

[0016] Optionally, the air compressor controller, the air compressor, the anode tail gas circulating pump controller and the anode tail gas circulating pump are arranged in parallel.

[0017] Optionally, the pipeline is provided with a temperature sensor.

[0018] The technical scheme provided by the embodiment of the utility model has at least the following beneficial effects:

[0019] This invention provides a cooling system for a high-temperature solid oxide fuel cell. The coolant in the radiator, after passing through the device to be cooled, becomes hot water and returns to the radiator. External air enters the hot water side of the radiator through a cooling pipe to cool the hot water. The cooled hot water then flows through the device to be cooled again. The external air, heated by the hot water, exits through the hot air pipe, enters the fuel cell power generation module through the first air inlet for reaction, and finally exits into the external air through the first air outlet. This design allows the external air, the raw material for the electrochemical reaction, to be directly used to cool the hot water in the radiator, eliminating the need for an additional cooling fan. It also heats the air used for the reaction, preparing it for subsequent reaction processes, thus recovering waste heat and increasing the overall energy conversion rate of the power generation system. This effectively solves the problem of low energy utilization in existing technologies. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure provided in an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of another arrangement of the cooling equipment provided in this embodiment of the utility model;

[0023] Figure 3 This is a schematic diagram of the heat sink structure provided in an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the cooling system provided in an embodiment of the present invention.

[0025] In the diagram: 1-Radiator; 11-Cold water pipe; 12-Hot water pipe; 13-Cold air pipe; 14-Hot air pipe; 2-Cooling water pump; 3-Equipment to be cooled; 31-Air compressor controller; 32-Air compressor; 33-Anode exhaust gas circulation pump controller; 34-Anode exhaust gas circulation pump; 4-Fuel cell power generation module; 41-First air inlet; 42-First air outlet; 43-Insulation layer; 5-Fuel cell power generation module cavity; 51-Second air inlet; 52-Second air outlet; 6-Air filter; 7-Cooling water tank; 8-Pipeline; 9-Temperature sensor. Detailed Implementation

[0026] In order to make the purpose, technical scheme and advantages of the utility model clearer, the utility model embodiment will be described in further detail below with reference to the drawings.

[0027] Figure 1 is the whole structure schematic diagram provided by the utility model embodiment; Figure 2 is another arrangement form schematic diagram of the equipment to be cooled provided by the utility model embodiment; Figure 3 is radiator structure schematic diagram provided by the utility model embodiment; Figure 4 is the cooling system principle diagram provided by the utility model embodiment. Figures 1 to 4 As shown in a kind of high-temperature solid oxide fuel cell cooling system, including: radiator 1, cooling water pump 2, equipment to be cooled 3 and fuel cell power module 4, fuel cell power module 4 is provided with first air inlet 41 and first air outlet 42, first air outlet 42 is connected with external air, radiator 1 includes cold water side and hot water side, radiator 1 is provided with cold gas pipe 13 and hot gas pipe 14, cold gas pipe 13 and hot gas pipe 14 are close to hot water side setting, cold gas pipe 13 is communicated with external air, hot gas pipe 14 is communicated with first air inlet 41, cold water side is connected with cooling water pump 2, cooling water pump 2 is connected with equipment to be cooled 3, equipment to be cooled 3 is connected with hot water side.

[0028] Exemplarily, in the utility model embodiment, as shown in Figure 1 And Figure 4 Coarse arrow in Figure 1 And Figure 4 Indicate the direction of air flow, fine arrow indicates the direction of cooling liquid flow. Cooling liquid in radiator 1 passes through cooling water pump 2, flows through equipment to be cooled 3, and returns to hot water part in radiator 1, cold gas pipe 13 is communicated with external air, external air enters the hot water part inside radiator 1 from cold gas pipe 13, reduces the temperature of cooling liquid in radiator 1, and improves its temperature, and the air after preheating is entered into fuel cell power module 4 from first air inlet 41, to further improve temperature, to reach the temperature required by electrochemical reaction. Hot water part in radiator 1 after cooling by external air becomes cold water part, and is input into equipment to be cooled again to be cooled, to form a circulating cooling system.

[0029] The cooling system of the high-temperature solid oxide fuel cell provided by the embodiment of the utility model, the cooling liquid in the radiator 1 becomes hot water after passing through the equipment to be cooled 3 and returns to the radiator 1, the external air enters the hot water side in the radiator through the cold air pipe 13, the hot water in it is cooled, the cooled hot water flows through the equipment to be cooled 3 again to be cooled, the external air heated by the hot water side comes out from the hot air pipe 14, enters the fuel cell power generation module 4 through the first air inlet 41 to react, and finally is discharged to the external air through the first air outlet 42. Through the setting, the external air of the raw material of the electrochemical reaction can be directly used to cool the hot water in the radiator 1, so that the additional cooling fan is saved, the raw material air of the reaction is heated, the subsequent reaction process is prepared, the waste heat is recycled, the energy conversion rate of the whole power generation system is increased, and the problem of low energy utilization rate in the prior art can be effectively solved.

[0030] Optionally, the fuel cell power generation module 4 is externally provided with a fuel cell power generation module cavity 5, a second air inlet 51 and a second air outlet 52 are formed in the fuel cell power generation module cavity 5, the second air inlet 51 is in communication with the external air, and the second air outlet 52 is connected with the cold air pipe 13.

[0031] Exemplarily, in the embodiment of the utility model, as shown in Figure 4 The heat preservation layer is arranged outside the fuel cell power generation module 4, so that the heat of the fuel cell power generation module 4 can be prevented from being taken away when the external air flows through the fuel cell power generation module cavity 5. The fuel cell power generation module cavity 5 can provide protection for the fuel cell power generation module 4, meanwhile, the second air inlet 51 is formed in the fuel cell power generation module cavity 5 and connected with the cold air pipe 13, so that the connecting pipeline between the internal device and the external environment can be reduced, the radiator 1 as the internal device can absorb the external air from the second air outlet 52 and the second air inlet 51, so that the radiator 1 is prevented from being directly connected with the external air, and the stability of the cooling system is improved.

[0032] Optionally, a heat insulation layer 43 is arranged between the fuel cell power generation module 4 and the fuel cell power generation module cavity 5.

[0033] Exemplarily, in the embodiment of the utility model, in order to prevent the heat of the fuel cell power generation module 4 from being taken away when the external air enters the radiator 1 through the fuel cell power generation module cavity 5, the heat insulation layer 43 is arranged outside the fuel cell power generation module 4 to heat-insulate the fuel cell power generation module 4, so that the temperature of the electric pile reaction is ensured and the energy utilization rate of the system is improved.

[0034] Optionally, the second air inlet 51 is arranged at the bottom of the fuel cell power module cavity 5, and the radiator 1, the cooling water pump 2 and the to-be-cooled device 3 are arranged at the top of the fuel cell power module 4.

[0035] Exemplarily, in the embodiment of the utility model, as shown in Figure 1 As shown, by arranging the whole cooling system into this structure, the overall structure can be more compact, the radiator 1, the cooling water pump 2, the to-be-cooled device 3 and the fuel cell power module 4 can be integrated inside a square structure, thereby reducing the occupied space of the cooling system and improving the integration degree of the cooling system.

[0036] Optionally, the air filter 6 is arranged between the hot air pipe 14 and the first air inlet 41.

[0037] Exemplarily, in the embodiment of the utility model, after the external air enters the cooling system, it needs to be used as raw material for electrochemical reaction, so after the external air is heated by the radiator 1, the impurities in the air are filtered by the air filter 6, and then the air is introduced into the fuel cell power module 4 for reaction, thereby preventing the impurities in the air from affecting the reaction and improving the power generation efficiency of the fuel cell power module 4.

[0038] Optionally, the radiator 1 is a square structure, the radiator 1 is provided with a cold water pipe 11 and a hot water pipe 12, the cold water pipe 11 and the hot water pipe 12 are arranged on two sides of the radiator 1 respectively, a cold air pipe 13 and a hot air pipe 14 are arranged on the side close to the hot water pipe 12, the cold water pipe 11 is connected with the cooling water pump 2, the cooling water pump 2 is connected with the to-be-cooled device 3, and the to-be-cooled device 3 is connected with the hot water pipe 12.

[0039] Exemplarily, in the embodiment of the utility model, by arranging the radiator into this structure, the hot water side of the radiator 1 can be cooled, the high-temperature cooling liquid inside the radiator 1 is cooled, and then flows out from the cold water side, this structure is simple and can efficiently cool the radiator 1, thereby improving the cooling efficiency of the cooling system.

[0040] Optionally, the cooling water tank 7 is arranged between the cold water pipe 11 and the cooling water pump 2.

[0041] Exemplarily, in the embodiment of the utility model, through setting cooling water tank 7 between cold water pipe 11 and cooling water pump 2, the cooled coolant can be stored in cooling 7, in the process of circulating coolant, the circulating rate of coolant can be changed by adjusting the moving rate of cooling water pump 2, when the equipment to be cooled 3 in the cooling system is temporarily in the condition of not needing cooling, cooling water pump 2 can be stopped, at this time, the redundant coolant after cooling can be stored in cooling water tank 7, when needing to continue cooling the equipment to be cooled 3, cooling water pump 2 is started again to extract the coolant in cooling water tank 7 to cool, by setting cooling water tank 7, another working condition can be provided for the circulation of coolant, so as to improve the practicality of the cooling system.

[0042] Optionally, it further comprises a pipeline 8, the equipment to be cooled 3 comprises an air compressor controller 31, an air compressor 32, an anode tail gas circulating pump controller 33 and an anode tail gas circulating pump 34, and the air compressor controller 31, the air compressor 32, the anode tail gas circulating pump controller 33 and the anode tail gas circulating pump 34 are connected through the pipeline.

[0043] Exemplarily, in the embodiment of the utility model, the air compressor controller 31, the air compressor 32, the anode tail gas circulating pump controller 33 and the anode tail gas circulating pump 34 are all key components in the power generation process of the solid oxide fuel cell, and the damage of any one of them in the power generation process can cause the entire power generation system to be paralyzed, therefore, the key components need to be cooled, the pipeline 8 is arranged in the interior of the equipment to be cooled 3, and the coolant is circulated in the pipeline 8 to cool the equipment to be cooled 3, so that the stable power generation of the power generation system is ensured, the safe operation of the fuel cell in the high-temperature environment is ensured, and a solid guarantee is provided for the development and utilization of sustainable energy.

[0044] Optionally, the air compressor controller 31, the air compressor 32, the anode tail gas circulating pump controller 33 and the anode tail gas circulating pump 34 are all arranged in parallel.

[0045] Exemplarily, in the embodiment of the utility model, as shown in Figure 2 The air compressor controller 31, the air compressor 32, the anode tail gas circulating pump controller 33 and the anode tail gas circulating pump 34 are arranged in parallel, that is, each component is connected with the radiator 1 through the pipeline 8 to form a separate circulating path, and the parallelly arranged paths can cool and circulate each component separately, compared with the series arrangement, the temperature of the coolant after being cooled by the former component is prevented from being too high to fail to cool the latter component. By parallel arrangement, the cooling efficiency of the cooling system can be further improved.

[0046] Optionally, the pipeline 8 is provided with a temperature sensor 9.

[0047] Exemplarily, in the embodiment of the utility model, as shown in Figure 2 The temperature sensor 9 is arranged on the pipeline 8 close to the equipment to be cooled 3, the temperature of the cooling liquid entering each equipment to be cooled 3 can be measured, so as to determine whether the temperature of the cooling liquid is qualified, so as to detect whether the cooling liquid can effectively cool the equipment to be cooled 3, when the temperature measured by the temperature sensor 9 at a certain position is too high, the operator can conveniently check and process at this position, so as to quickly find out the fault point, that is, the fault reason. The temperature sensor 9 is arranged, and the operation convenience of the cooling system is improved.

[0048] Unless otherwise defined, the technical terms or scientific terms used herein should be understood as the common meanings understood by those skilled in the art to which the utility model belongs. The "first", "second" and similar words used in the utility model patent application specification and claims do not represent any order, quantity or importance, but are only used to distinguish different components. Similarly, "one" or "a" and similar words do not represent a quantity limit, but represent the existence of at least one. "Include" or "contain" and similar words mean that the elements or objects appearing before "include" or "contain" cover the elements or objects listed after "include" or "contain" and their equivalents, and do not exclude other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent relative positional relationships, when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0049] The above is only the optional embodiment of the utility model, and does not limit the utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A cooling system for a high-temperature solid oxide fuel cell, characterized in that, include: The components include a radiator (1), a cooling water pump (2), equipment to be cooled (3), and a fuel cell power generation module (4). The fuel cell power generation module (4) is provided with a first air inlet (41) and a first air outlet (42), the first air outlet (42) being connected to the outside air. The radiator (1) includes a cold water side and a hot water side. The radiator (1) is provided with a cold air pipe (13) and a hot air pipe (14). The cold air pipe (13) and the hot air pipe (14) are located close to the hot water side. The cold air pipe (13) is connected to the outside air, and the hot air pipe (14) is connected to the first air inlet (41). The cold water side is connected to the cooling water pump (2), the cooling water pump (2) is connected to the device to be cooled (3), and the device to be cooled (3) is connected to the hot water side.

2. The cooling system for a high-temperature solid oxide fuel cell according to claim 1, characterized in that, The fuel cell power generation module (4) is provided with a fuel cell power generation module cavity (5) on the outside. The fuel cell power generation module cavity (5) has a second air inlet (51) and a second air outlet (52). The second air inlet (51) is connected to the outside air, and the second air outlet (52) is connected to the cooling pipe (13).

3. The cooling system for a high-temperature solid oxide fuel cell according to claim 2, characterized in that, A heat insulation layer (43) is provided between the fuel cell power generation module (4) and the fuel cell power generation module cavity (5).

4. The cooling system for a high-temperature solid oxide fuel cell according to claim 2, characterized in that, The second air inlet (51) is located at the bottom of the fuel cell power generation module cavity (5), and the radiator (1), the cooling water pump (2) and the cooling device (3) are located at the top of the fuel cell power generation module (4).

5. The cooling system for a high-temperature solid oxide fuel cell according to claim 1, characterized in that, An air filter (6) is provided between the hot air pipe (14) and the first air inlet (41).

6. The cooling system for a high-temperature solid oxide fuel cell according to claim 1, characterized in that, The radiator (1) has a square structure. The radiator (1) is provided with a cold water pipe (11) and a hot water pipe (12). The cold water pipe (11) and the hot water pipe (12) are respectively located on both sides of the radiator (1). The cold air pipe (13) and the hot air pipe (14) are located on the side close to the hot water pipe (12). The cold water pipe (11) is connected to the cooling water pump (2). The cooling water pump (2) is connected to the device to be cooled (3). The device to be cooled (3) is connected to the hot water pipe (12).

7. The cooling system for a high-temperature solid oxide fuel cell according to claim 6, characterized in that, A cooling water tank (7) is provided between the cold water pipe (11) and the cooling water pump (2).

8. The cooling system for a high-temperature solid oxide fuel cell according to claim 1, characterized in that, It also includes a pipe (8), and the equipment to be cooled (3) includes an air compressor controller (31), an air compressor (32), an anode tail gas circulation pump controller (33) and an anode tail gas circulation pump (34), and the air compressor controller (31), the air compressor (32), the anode tail gas circulation pump controller (33) and the anode tail gas circulation pump (34) are connected through the pipe.

9. The cooling system for a high-temperature solid oxide fuel cell according to claim 8, characterized in that, The air compressor controller (31), the air compressor (32), the anode tail gas circulation pump controller (33), and the anode tail gas circulation pump (34) are all connected in parallel.

10. The cooling system for a high-temperature solid oxide fuel cell according to claim 8, characterized in that, A temperature sensor (9) is installed on the pipe (8).

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