Heat energy recovery device of fuel cell test bench
By designing a heat energy recovery device for the fuel cell test bench, using the heat of the fuel cell to heat the gas, and adjusting the fuel cell temperature through the temperature control component, the high power consumption problem caused by the independent gas heating and temperature control system in the prior art is solved, and the effects of heat energy recovery and power saving are achieved.
Patent Information
- Application Number
- CN202421020712.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-11
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-05-11
AI Technical Summary
During the testing process of the existing fuel cell test bench, the gas heating and temperature control system are two independent systems, resulting in large power consumption and ineffective in meeting the needs of use.
A fuel cell test bench thermal energy recovery device is designed, including a thermal energy recovery assembly and a temperature control assembly. The heat energy recovery component uses the heat exchange device, connecting pipes and gas heating circulating water pump to heat gas using the heat of the fuel cell; the temperature control component uses the water storage tank, water chiller, temperature control heat exchanger and temperature control circulating water pump to control the temperature of the fuel cell.
The coordinated work of gas heating and temperature control is achieved, the power consumption of the two systems is reduced, and the purpose of fuel cell thermal energy recovery and power saving on the test bench is achieved.
Smart Images
Figure CN222562705U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of fuel cell testing, and in particular relates to a heat energy recovery device for a fuel cell testing platform. Background Art
[0002] The fuel cell test bench is a special test equipment used to test various performance indicators of fuel cells. It consists of an air supply system, a hydrogen supply system, a temperature control system, a data acquisition and recording system, a control system, and an electronic load. During the fuel cell test, the air and hydrogen supplied to it need to be heated to prevent low-temperature gases from interfering with the test results. At the same time, during the test, the temperature of the fuel cell under test also needs to be controlled to prevent the fuel cell from overheating and being damaged.
[0003] At present, the existing fuel cell test bench generally heats the gas directly by an electric heater or a water bath, and the test bench usually uses a radiator and a fan to control the temperature of the fuel cell under test, or a heat exchanger and a chiller to control the temperature of the fuel cell under test. In the actual working process, the temperature control system is cooling the fuel cell under test most of the time, and is limited by the fact that the gas heating and temperature control systems are two independent systems, and the electric power of the two systems is relatively large during operation, generally tens to one hundred kilowatts, and continuous operation requires a large amount of electricity, which greatly increases the energy cost and cannot meet the use requirements. For this reason, we provide a fuel cell test bench heat energy recovery device with reasonable design, simple structure, convenient processing, and can realize the coordinated work of gas heating and temperature control, especially can use the heat of the fuel cell to heat the gas, and to a certain extent effectively reduce the power consumption of the two systems, thereby realizing the purpose of fuel cell heat energy recovery and power saving of the fuel cell test bench. Utility Model Content
[0004] In response to the technical problem of resource loss in the above-mentioned fuel cell testing process, the utility model proposes a fuel cell test bench heat energy recovery device which has a reasonable design, a simple structure, is easy to process and can achieve coordinated work between gas heating and temperature control. In particular, the heat of the fuel cell can be used to heat the gas and effectively reduce the power consumption of the two systems to a certain extent, thereby achieving the purpose of fuel cell heat energy recovery and power saving of the fuel cell test bench.
[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is a fuel cell test bench heat recovery device, including a fuel cell, characterized in that a heat recovery component for facilitating heat recovery and reuse and a temperature control component for facilitating controlling its operating temperature are arranged on the outside of the fuel cell, the heat recovery component includes a heat exchange device, a connecting pipeline and a gas heating circulation water pump, the heat exchange device includes an air heating heat exchanger and a hydrogen heating heat exchanger, and are symmetrically arranged on the left and right sides of the fuel cell, the gas heating circulation water pump is established below the hydrogen heating heat exchanger, the air heating heat exchanger is respectively provided with an air inlet and an air outlet arranged diagonally and a first water inlet and a first water outlet, and the air outlet is connected to the upper side of the fuel cell, and the hydrogen heating heat exchanger is respectively provided with a hydrogen heating heat exchanger arranged diagonally. The gas inlet and hydrogen outlet are connected to the second water inlet and the second water outlet. The temperature control component includes a water tank connected to the fuel cell, a chiller for facilitating temperature control, a temperature-controlled heat exchanger and a temperature-controlled circulating water pump connected to the water tank. The temperature-controlled heat exchanger is also provided with a cold water inlet and a hot water outlet and a hot water inlet and a cold water outlet that are diagonally arranged and interconnected. The temperature-controlled heat exchanger is arranged on one side of the water tank, and its cold water outlet is connected to the bottom of the fuel cell. The temperature-controlled circulating water pump is arranged between the water tank and the temperature-controlled heat exchanger, and the output end of the temperature-controlled circulating water pump is connected to the hot water inlet. The left and right sides of the chiller are provided with a return water end and a water outlet end, respectively. The chiller is arranged on one side of the temperature-controlled heat exchanger, and its return water end and water outlet end are connected to the hot water outlet and the cold water inlet, respectively.
[0006] Preferably, the gas heating circulating water pump is connected to the water tank and the second water inlet respectively, and a manifold is also provided at the output end of the gas heating circulating water pump, which is respectively connected to the second water outlet, the first water inlet and the end of the first water outlet, and is connected to the other side of the water tank.
[0007] Preferably, a first temperature sensor is provided on the connecting pipeline between the water tank and the fuel cell, a second temperature sensor is provided on the connecting pipeline between the temperature control heat exchanger and the fuel cell, a third temperature sensor is provided on the water tank, a fourth temperature sensor is provided on the connecting pipeline between the air heating heat exchanger and the fuel cell, and a fifth temperature sensor is provided on the connecting pipeline between the hydrogen heating heat exchanger and the fuel cell.
[0008] Preferably, a first solenoid valve is arranged on the connecting pipeline between the manifold and the first water inlet, a second solenoid valve is arranged on one side of the connection between the first water outlet and the manifold for conveniently controlling the on-off of the manifold, a third solenoid valve is arranged on the connecting pipeline between the gas heating circulating water pump and the second water inlet, and a fourth solenoid valve is arranged on one side of the connection between the second water outlet and the manifold for conveniently controlling the on-off of the manifold.
[0009] Preferably, the fuel cell is provided with tail gas discharge ports and tail gas treatment ports on the left and right sides of the outer side.
[0010] Compared with the prior art, the advantages and positive effects of the utility model are:
[0011] 1. The utility model provides a fuel cell test bench heat recovery device. Through the heat recovery component, it can realize the recovery and reuse of the heat generated during the operation of the fuel cell, especially the heating of the air and hydrogen input into the fuel cell, avoiding the possibility of affecting the processing efficiency due to the low gas temperature, and ensuring the working process; through the temperature control component, it can cooperate with the heat recovery component on the one hand to complete the heat recovery of the fuel cell during the operation, and on the other hand, it can effectively complete the convenient regulation of the fuel cell temperature, reduce the possibility of damage due to overheating, and ensure the safety of the test; using the temperature sensor, the temperature of each device can be detected in real time to prevent the possibility of overheating due to excessive temperature, and the electromagnetic valve and the heat recovery component can be used to achieve simultaneous or separate heating of air and hydrogen, which greatly improves the functionality of the device and meets the use requirements; the device has a reasonable design, a simple structure, and is easy to process, and can realize the coordinated work of gas heating and temperature control, especially the heat of the fuel cell can be used to heat the gas, and to a certain extent effectively reduce the power consumption of the two systems, thereby achieving the purpose of fuel cell heat recovery and power saving of the fuel cell test bench. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor.
[0013] Figure 1 This is a schematic diagram of the structure of the heat recovery device of the fuel cell test bench;
[0014] In the above figures, 1, fuel cell; 1a, exhaust gas discharge port; 1b, exhaust gas treatment port; 2, air heating heat exchanger; 21, air inlet; 22, air outlet; 23, first water inlet; 24, first water outlet; 3, hydrogen heating heat exchanger; 31, hydrogen inlet; 32, hydrogen outlet; 33, second water inlet; 34, second water outlet; 4, water storage tank; 5, chiller; 51, return water end; 52, water outlet; 6, temperature control heat exchanger; 61, cold water inlet; 62, hot water outlet; 63, hot water inlet; 64, cold water outlet; 7, temperature control circulating water pump; 8, gas heating circulating water pump; 9, manifold; 10, first temperature sensor; 11, second temperature sensor; 12, third temperature sensor; 13, fourth temperature sensor; 14, fifth temperature sensor; 15, first solenoid valve; 16, second solenoid valve; 17, third solenoid valve; 18, fourth solenoid valve. DETAILED DESCRIPTION
[0015] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.
[0016] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.
[0017] Examples, such as Figure 1As shown, a fuel cell 1 test bench heat recovery device includes a fuel cell 1. The outer side of the fuel cell 1 is provided with a heat recovery component for facilitating heat recovery and reuse and a temperature control component for facilitating controlling its operating temperature. The heat recovery component includes a heat exchange device, a connecting pipeline and a gas heating circulating water pump 8. For the established connecting pipeline, it can realize the interconnection between various equipment components, ensure the smoothness of the transmission of both gas and circulating water, and ensure the effective implementation of the test work; further, the heat exchange device includes an air heating heat exchanger 2 and a hydrogen heating heat exchanger 3, and they are symmetrically arranged on the left and right of the fuel cell 1. On both sides, the air heating heat exchanger 2 and the hydrogen heating heat exchanger 3 are set up mainly because the operating temperature of the fuel cell 1 will be higher than the ambient temperature when it is operating normally, and the air and hydrogen temperatures at this time are generally the same as or close to the ambient temperature. If the relatively low-temperature air and hydrogen are directly introduced into the fuel cell 1, the working efficiency of the fuel cell 1 will be reduced, and side reactions such as water flooding, water electrolysis, and carbon corrosion will be caused. Therefore, the air heating heat exchanger 2 and the hydrogen heating heat exchanger 3 are used to heat the air or hydrogen respectively to prevent the above situation from happening and ensure the smooth progress of the test work;The gas heating circulating water pump 8 is set below the hydrogen heating heat exchanger 3. The air heating heat exchanger 2 is respectively provided with an air inlet 21 and an air outlet 22, a first water inlet 23 and a first water outlet 24 arranged diagonally, and the air outlet 22 is connected to the upper side of the fuel cell 1. The hydrogen heating heat exchanger 3 is respectively provided with a hydrogen inlet 31 and a hydrogen outlet 32, a second water inlet 33 and a second water outlet 34 arranged diagonally. The temperature control component includes a water storage tank 4 connected to the fuel cell 1, a chiller 5 for facilitating temperature control, a temperature control heat exchanger 6 and a temperature control circulating water pump 7 connected to the water storage tank 4. The temperature control heat exchanger 6 is also respectively provided with a cold water inlet 61 and a hot water outlet 62, a hot water inlet 63 and a cold water outlet 64 arranged diagonally and interlinked with each other. The temperature control heat exchanger 6 is set on one side of the water storage tank 4. side, and its cold water outlet 64 is connected to the bottom of the fuel cell 1, the temperature control circulating water pump 7 is arranged between the water storage tank 4 and the temperature control heat exchanger 6, and the output end of the temperature control circulating water pump 7 is connected to the hot water inlet 63, the left and right sides of the chiller 5 are respectively provided with a return water end 51 and a water outlet end 52, the chiller 5 is arranged on one side of the temperature control heat exchanger 6, and its return water end 51 and water outlet end 52 are respectively connected to the hot water outlet 62 and the cold water inlet 61, further speaking: when the fuel cell 1 operates normally, its heat output generally accounts for 40%-60% of its total energy output, at this time, the temperature control component of the fuel cell 1 test bench will transfer the heat to the temperature control heat exchanger 6 through the circulating water, and the chiller 5 will then transfer and dissipate the heat to the atmosphere, and at the same time, by adjusting the flow rate of the circulating water through the temperature control circulating water pump 7, the temperature of the fuel cell 1 can be accurately controlled. ;
[0018] In order to further improve the rationality of the establishment of the device, the gas heating circulating water pump 8 is respectively connected to the water tank 4 and the second water inlet 33, and a manifold 9 is also provided at the output end of the gas heating circulating water pump 8. The manifold 9 is respectively connected to the ends of the second water outlet 34, the first water inlet 23 and the first water outlet 24, and is connected to the other side of the water tank 4. Among them, for the established manifold 9, it can connect the water tank 4 with the air heating heat exchanger 2 and the hydrogen heating heat exchanger 3, and through the opening and closing control of the solenoid valve, it is used to complete the centralized or separate heating of air and hydrogen, ensure the working progress, and meet the use requirements of production and processing.
[0019] In order to realize convenient detection of the temperature of each device and the circulating water temperature, a first temperature sensor 10 is arranged on the connecting pipeline between the water tank 4 and the fuel cell 1, a second temperature sensor 11 is arranged on the connecting pipeline between the temperature control heat exchanger 6 and the fuel cell 1, a third temperature sensor 12 is arranged on the water tank 4, a fourth temperature sensor 13 is arranged on the connecting pipeline between the air heating heat exchanger 2 and the fuel cell 1, and a fifth temperature sensor 14 is arranged on the connecting pipeline between the hydrogen heating heat exchanger 3 and the fuel cell 1. The establishment of each temperature sensor is used to detect the temperature of the corresponding pipeline or equipment in real time, so as to facilitate the free regulation of the operation of the temperature control component, ensure the smooth operation of the test bench, and meet the use requirements.
[0020] In order to achieve convenient control of the flow direction of circulating water, a first solenoid valve 15 is arranged on the connecting pipeline between the manifold 9 and the first water inlet 23, a second solenoid valve 16 for controlling the on-off of the manifold 9 is arranged on the side of the connection between the first water outlet 24 and the manifold 9, a third solenoid valve 17 is arranged on the connecting pipeline between the gas heating circulating water pump 8 and the second water inlet 33, and a fourth solenoid valve 18 for controlling the on-off of the manifold 9 is arranged on the side of the connection between the second water outlet 34 and the manifold 9. According to different usage requirements in the test work, the on-off of different solenoid valves can be adjusted respectively, so as to realize synchronous or separate heating of air and hydrogen, thereby fully improving the functionality of the device.
[0021] In order to effectively discharge the exhaust gas generated during the operation of the fuel cell 1, the outer side of the fuel cell 1 is also provided with an exhaust gas discharge port 1a and an exhaust gas treatment port 1b on the left and right sides. The above-mentioned exhaust gas discharge port 1a and exhaust gas treatment port 1b are both conventional settings of the existing fuel cell 1. On the one hand, they are used to ensure that the waste generated during the combustion process is discharged, and on the other hand, they can also be connected to the external exhaust gas treatment equipment to purify the exhaust gas to avoid affecting the environment of the test work and ensure safety.
[0022] The specific working principle and working method are described as follows:
[0023] During the operation of the fuel cell 1, the temperature-controlled circulating water pump 7 will be turned on, and the water pump will circulate water in the fuel cell 1, pipelines, water tank 4 and temperature-controlled heat exchanger 6. The chiller 5 will take away the heat in the temperature-controlled heat exchanger 6 and dissipate it. The third temperature sensor 12 is used to monitor the water temperature in the water tank 4 in real time. The first temperature sensor 10 and the second temperature sensor 11 are used to monitor the water temperature in and out of the fuel cell 1 in real time, so as to monitor the internal temperature of the fuel cell 1.
[0024] When there is no need to heat the air and hydrogen input to the fuel cell 1, the gas heating circulation water pump 8 and the first solenoid valve 15, the second solenoid valve 16, the third solenoid valve 17 and the fourth solenoid valve 18 are closed, and heat energy recovery is not performed in this state.
[0025] When it is necessary to heat the air and hydrogen input to the fuel cell 1 at the same time, start the gas heating circulating water pump 8, open the first solenoid valve 15 and the third solenoid valve 17, and close the second solenoid valve 16 and the fourth solenoid valve 18. The gas heating circulating water pump 8 will circulate water in the water storage tank 4, the connecting pipeline, the air heating heat exchanger 2 and the hydrogen heating heat exchanger 3, and the air and hydrogen input to the fuel cell 1 will be heated when passing through the air heating heat exchanger 2 and the hydrogen heating heat exchanger 3. The fourth temperature sensor 13 can monitor the temperature value of the air in real time, and the fifth temperature sensor 14 can monitor the temperature value of the hydrogen in real time. In this process, the speed of the gas heating circulating water pump 8 can be adjusted to adjust the flow rate of the circulating water, and then the gas heating situation can be adjusted, and finally the heating control of the air and hydrogen input to the fuel cell 1 is realized. At the same time, the heat energy recovery of the fuel cell 1 and the power saving of the fuel cell 1 test bench are also realized to a certain extent.
[0026] When only the air input to the fuel cell 1 needs to be heated, start the gas heating circulating water pump 8, open the first solenoid valve 15 and the fourth solenoid valve 18, and close the second solenoid valve 16 and the third solenoid valve 17. The gas heating circulating water pump 8 will cause water to circulate in the water storage tank 4, the connecting pipeline, and the air heating heat exchanger 2. The air input to the fuel cell 1 will be heated when passing through the air heating heat exchanger 2. Furthermore, the fourth temperature sensor 13 can monitor the temperature value of the air in real time. In this process, the speed of the gas heating circulating water pump 8 can be adjusted to adjust the flow rate of the circulating water, thereby adjusting the gas heating situation, and finally achieving heating control of the air input to the fuel cell 1. At the same time, the heat energy recovery of the fuel cell 1 and the power saving of the fuel cell 1 test bench are realized.
[0027] When it is only necessary to heat the hydrogen input to the fuel cell 1, the gas heating circulating water pump 8 is started, the second solenoid valve 16 and the third solenoid valve 17 are opened, and the first solenoid valve 15 and the fourth solenoid valve 18 are closed. The gas heating circulating water pump 8 will cause water to circulate in the water storage tank 4, the connecting pipeline, and the hydrogen heating heat exchanger 3. The hydrogen input to the fuel cell 1 will be heated when passing through the hydrogen heating heat exchanger 3. The fifth temperature sensor 14 can monitor the temperature value of the hydrogen in real time. In this process, the speed of the gas heating circulating water pump 8 can also be adjusted to adjust the flow rate of the circulating water, thereby adjusting the gas heating situation, and finally realizing the heating control of the air input to the fuel cell 1. At the same time, the heat energy recovery of the fuel cell 1 and the power saving of the fuel cell 1 test bench are also realized.
[0028] In the above process: through the heat recovery component, the heat generated during the operation of the fuel cell 1 can be recovered and reused, especially the air and hydrogen input into the fuel cell 1 can be heated, so as to avoid the possibility of affecting the processing efficiency due to the low gas temperature and ensure the working process; through the temperature control component, on the one hand, it can cooperate with the heat recovery component to complete the heat recovery during the operation of the fuel cell 1, and on the other hand, it can effectively complete the convenient regulation of the temperature of the fuel cell 1, reduce the possibility of damage due to overheating, and ensure the safety of the test; using the temperature sensor, the temperature of each device can be detected in real time to prevent the possibility of overheating due to excessive temperature, and using the solenoid valve and the heat recovery component, the air and hydrogen can be heated simultaneously or separately, which greatly improves the functionality of the device and meets the use requirements; the device has a reasonable design, a simple structure, and is easy to process, and can realize the coordinated work of gas heating and temperature control, especially the heat of the fuel cell 1 can be used to heat the gas, and to a certain extent, the power consumption of the two systems can be effectively reduced, thereby achieving the purpose of heat recovery of the fuel cell 1 and power saving of the fuel cell 1 test bench.
[0029] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.
Claims
1. A fuel cell test bench heat recovery device, comprising a fuel cell, characterized in that: The outside of the fuel cell is provided with a heat recovery component for facilitating heat recovery and reuse and a temperature control component for facilitating controlling its operating temperature. The heat recovery component includes a heat exchange device, a connecting pipeline and a gas heating circulating water pump. The heat exchange device includes an air heating heat exchanger and a hydrogen heating heat exchanger, and is symmetrically arranged on the left and right sides of the fuel cell. The gas heating circulating water pump is set below the hydrogen heating heat exchanger. The air heating heat exchanger is provided with an air inlet and an air outlet arranged diagonally and a first water inlet and a first water outlet, and the air outlet is connected to the upper side of the fuel cell. The hydrogen heating heat exchanger is provided with a hydrogen inlet and a hydrogen outlet arranged diagonally and a second water inlet and a second water outlet, and the temperature The control component includes a water tank connected to the fuel cell, a chiller for facilitating temperature control, a temperature-controlled heat exchanger and a temperature-controlled circulating water pump connected to the water tank. The temperature-controlled heat exchanger is also provided with a cold water inlet and a hot water outlet and a hot water inlet and a cold water outlet that are arranged diagonally and interlinked with each other. The temperature-controlled heat exchanger is arranged on one side of the water tank, and its cold water outlet is connected to the bottom of the fuel cell. The temperature-controlled circulating water pump is arranged between the water tank and the temperature-controlled heat exchanger, and the output end of the temperature-controlled circulating water pump is connected to the hot water inlet. The left and right sides of the chiller are provided with a return water end and a water outlet end, respectively. The chiller is arranged on one side of the temperature-controlled heat exchanger, and its return water end and water outlet end are connected to the hot water outlet and the cold water inlet, respectively.
2. The fuel cell test bench heat recovery device according to claim 1, characterized in that: The gas heating circulating water pump is connected to the water tank and the second water inlet respectively. A manifold is also provided at the output end of the gas heating circulating water pump. The manifold is connected to the second water outlet, the first water inlet and the end of the first water outlet respectively, and is connected to the other side of the water tank.
3. The fuel cell test bench heat recovery device according to claim 2, characterized in that: A first temperature sensor is provided on the connecting pipeline between the water tank and the fuel cell, a second temperature sensor is provided on the connecting pipeline between the temperature control heat exchanger and the fuel cell, a third temperature sensor is provided on the water tank, a fourth temperature sensor is provided on the connecting pipeline between the air heating heat exchanger and the fuel cell, and a fifth temperature sensor is provided on the connecting pipeline between the hydrogen heating heat exchanger and the fuel cell.
4. The fuel cell test bench heat recovery device according to claim 3, characterized in that: A first solenoid valve is arranged on the connecting pipeline between the manifold and the first water inlet, a second solenoid valve is arranged on one side of the connection between the first water outlet and the manifold for facilitating the on-off control of the manifold, a third solenoid valve is arranged on the connecting pipeline between the gas heating circulating water pump and the second water inlet, and a fourth solenoid valve is arranged on one side of the connection between the second water outlet and the manifold for facilitating the on-off control of the manifold.
5. The fuel cell test bench heat recovery device according to claim 4, characterized in that: The outer side of the fuel cell is also provided with tail gas discharge ports and tail gas treatment ports on the left and right sides.