Fuel cell engine test bench

Abstract

The embodiment of the utility model discloses a fuel cell engine test board, which is applied to the test of a fuel cell engine, and comprises a cooling module, the cooling module comprises a cooling pipeline and a heat exchanger, the cooling pipeline is communicated with a cooling cavity of the fuel cell engine, and the cooling pipeline is used for providing a cooling medium flowing circularly for the cooling cavity, the heat exchanger is communicated with the cooling pipeline so as to cool the cooling medium; the purging module communicates with the cooling pipeline, and the purging module is used for conveying gas into the cooling pipeline so as to purge the cooling cavity and the cooling pipeline; and the vacuum module communicates with the cooling pipeline, and the vacuum module is used for forming negative pressure in the cooling pipeline. According to the fuel cell engine test bench provided by the embodiment of the invention, residual deionized water in the water cavity of the fuel cell engine can be discharged, and the residual deionized water in the cooling cavity of the fuel cell engine is prevented from influencing subsequent carrying and storage of the fuel cell engine.

Description

Technical Field

[0001] This application relates to the field of fuel cell engine technology, and in particular to a fuel cell engine test bench. Background Technology

[0002] After completing the testing process for the fuel cell engine, the internal chambers of the fuel cell engine need to be thoroughly purged of hydrogen and deionized water to ensure the subsequent handling and storage of the fuel cell engine. During the removal of hydrogen and deionized water, hydrogen, due to its unique properties, can usually be easily and completely replaced.

[0003] However, due to the complexity of the fuel cell engine's structure, it is difficult to completely drain the deionized water from the water chamber inside the fuel cell engine. Even with standard purging procedures, a certain amount of deionized water may still remain inside the fuel cell engine. Utility Model Content

[0004] This application discloses a fuel cell engine test bench that can remove water accumulation inside the water chamber of a fuel cell engine, preventing residual water inside the water chamber from affecting battery performance.

[0005] To achieve the above objectives, this application provides a fuel cell engine test bench for testing fuel cell engines, comprising: a cooling module, the cooling module including cooling pipes and a heat exchanger, the cooling pipes being connected to the cooling chamber of the fuel cell engine, the cooling pipes being used to provide a circulating cooling medium to the cooling chamber, and the heat exchanger being connected to the cooling pipes to cool the cooling medium; a purging module, the purging module being connected to the cooling pipes, the purging module being used to deliver gas into the interior of the cooling pipes to purge the cooling chamber and the cooling pipes; and a vacuum module, the vacuum module being connected to the cooling pipes, the vacuum module being used to create a negative pressure inside the cooling pipes.

[0006] As an optional implementation, the heat exchanger includes a first heat exchanger and a second heat exchanger, and the cooling pipeline includes: a main cooling pipeline connected to the cooling chamber, wherein the first heat exchanger is disposed in the main cooling pipeline; an auxiliary cooling pipeline connected to the cooling chamber, wherein the auxiliary cooling pipeline is used to assist the main cooling pipeline in cooling the heat generated by the fuel cell engine, wherein the second heat exchanger is disposed in the auxiliary cooling pipeline; the vacuum module is connected to the main cooling pipeline; and / or the vacuum module is connected to the auxiliary cooling pipeline.

[0007] As an optional implementation, the main cooling pipeline includes a main water inlet pipe and a main water outlet pipe, and the vacuum module is connected to the main water outlet pipe; the auxiliary cooling pipeline includes an auxiliary water inlet pipe and an auxiliary water outlet pipe, and the vacuum module is connected to the auxiliary water outlet pipe.

[0008] As an optional implementation, the vacuum module includes: a first vacuum line connected to the main water outlet pipe; a second vacuum line connected to the auxiliary water outlet pipe; and a vacuum generator connected to the first vacuum line and the second vacuum line respectively, the vacuum generator being used to generate negative pressure in the first vacuum line and the second vacuum line.

[0009] As an optional implementation, the cooling module includes: a first cooling valve assembly disposed on the main cooling pipe, the first cooling valve assembly being used to control the connection of the main cooling pipe; and a second cooling valve assembly disposed on the auxiliary cooling pipe, the second cooling valve assembly being used to control the connection of the auxiliary cooling pipe.

[0010] As an optional implementation, the first cooling valve assembly includes a first inlet valve and a first outlet valve, the first inlet valve being disposed on the main inlet pipe, the first outlet valve being disposed on the main outlet pipe, and the connection between the first vacuum line and the main outlet pipe being located between the first outlet valve and the cooling chamber; the second cooling valve assembly includes a second inlet valve and a second outlet valve, the second inlet valve being disposed on the auxiliary inlet pipe, the second outlet valve being disposed on the auxiliary outlet pipe, and the connection between the second vacuum line and the auxiliary outlet pipe being located between the second outlet valve and the cooling chamber.

[0011] As an optional implementation, one end of the second vacuum pipeline is connected to the auxiliary water outlet pipe, and the other end of the second vacuum pipeline is connected to the first vacuum pipeline; the vacuum generator is disposed in the first vacuum pipeline, and the vacuum generator is located downstream of the connection between the first vacuum pipeline and the second vacuum pipeline.

[0012] As an optional implementation, the vacuum module includes: a first switching valve disposed in the first vacuum line, the first switching valve being used to control the opening and closing of the first vacuum line; and a second switching valve disposed in the second vacuum line, the second switching valve being used to control the opening and closing of the second vacuum line.

[0013] As an optional implementation, the purging module includes: a gas source; a first purging pipeline, the first end of which is connected to the gas source, and the second end of which is connected to the main cooling pipeline; and a second purging pipeline, the first end of which is connected to the first purging pipeline, and the second end of which is connected to the auxiliary cooling pipeline.

[0014] As an optional implementation, the purging module includes: a third switching valve disposed in the first purging pipeline, the third switching valve being disposed downstream of the connection between the first purging pipeline and the second purging pipeline; and a fourth switching valve disposed in the second purging pipeline.

[0015] Compared with the prior art, the beneficial effects of this application are:

[0016] The fuel cell engine test bench provided in this application embodiment can ensure that the fuel cell engine operates at a certain temperature during testing through a cooling module. After the test is completed, the purging module can initially remove residual deionized water inside the fuel cell engine, and then the vacuum module further converts the residual deionized water into gaseous state for discharge. Finally, a second purging is performed by the purging module. The use of the purging module and the vacuum module ensures that the deionized water inside the fuel cell engine can be removed, making the subsequent handling and storage of the fuel cell engine safer and more reliable. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a structural block diagram of the fuel cell engine test bench provided in an embodiment of this application;

[0019] Figure 2 A simplified flowchart illustrating the process of removing deionized water provided in this application embodiment.

[0020] Explanation of reference numerals in the attached figures:

[0021] 100 - Fuel Cell Engine Test Stand; 101 - Fuel Cell Engine; 1 - Cooling Module; 11 - Cooling Pipeline; 111 - Main Cooling Pipeline; 1111 - Main Inlet Water Pipe; 1112 - Main Outlet Water Pipe; 112 - Auxiliary Cooling Pipeline; 1121 - Auxiliary Inlet Water Pipe; 1122 - Auxiliary Outlet Water Pipe; 1123 - Circulation Pump; 12 - Heat Exchanger; 121 - First Heat Exchanger; 122 - Second Heat Exchanger; 13 - First Cooling Valve Assembly; 131 - First Inlet Water Valve; 132 - First Outlet Water Valve; 14 - Second Cooling Valve Assembly Valve assembly; 141-Second inlet valve; 142-Second outlet valve; 2-Purge module; 21-Gas source; 22-First purge pipeline; 23-Second purge pipeline; 24-Third switch valve; 25-Fourth switch valve; 3-Vacuum module; 31-First vacuum pipeline; 32-Second vacuum pipeline; 33-Vacuum generator; 34-First switch valve; 35-Second switch valve; 4-Gas supply module; 41-First gas supply pipeline; 42-Second gas supply pipeline; 43-Hydrogen source; 44-Air source; 5-Tail exhaust module. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] In this application, the terms "upper," "lower," "top," "bottom," "inner," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0024] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0025] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0026] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0027] After the fuel cell engine completes the testing process, the hydrogen and deionized water in the internal chamber of the fuel cell engine need to be purged to ensure the safety and performance stability of the fuel cell engine during subsequent handling, storage and long-term maintenance.

[0028] In practical applications, hydrogen is typically easy and thorough to remove due to its relatively light molecular weight and high diffusivity. Hydrogen can be replaced in fuel cell engines by using purge gases (e.g., nitrogen, argon) and a suitable purge process.

[0029] However, compared to hydrogen, deionized water in the cooling chamber of a fuel cell engine is difficult to completely remove. After the fuel cell engine undergoes a standard purging process, technicians must disconnect each interface of the fuel cell engine one by one and manually adjust the tilt angle of the fuel cell engine to promote the natural outflow of residual water. This method of removing deionized water is time-consuming, complex, and often leaves water inside the fuel cell engine unavoidably in practice, which may cause potential damage to the fuel cell engine.

[0030] During the purging process, deionized water may remain in the corners and crevices inside the fuel cell engine, forming water that is difficult to remove. This residual deionized water may not only affect the subsequent handling and storage of the fuel cell engine, but may also adversely affect the long-term performance and lifespan of the system. Residual deionized water may cause corrosion, icing, and other problems inside the fuel cell engine, thereby affecting its performance and safety.

[0031] To address the aforementioned issues, the inventors investigated the limitations of existing fuel cell engine test benches and improved upon them. They designed a fuel cell engine test bench capable of draining residual deionized water from the water chamber of the fuel cell engine, thereby preventing residual deionized water from affecting the fuel cell engine's performance and achieving the goal of improving the performance and safety of the fuel cell engine.

[0032] Based on this, this application discloses a fuel cell engine test bench, which solves the problem that residual deionized water inside the cooling chamber of the fuel cell engine affects the performance of the fuel cell engine.

[0033] The technical solution of this application will be further described below with reference to the embodiments and accompanying drawings.

[0034] Please see Figure 1 , Figure 1 This is a structural block diagram of a fuel cell engine test bench 100 provided in an embodiment of this application. The embodiment discloses a fuel cell engine test bench 100 for testing a fuel cell engine 101, comprising: a cooling module 1, which includes a cooling pipe 11 and a heat exchanger 12. The cooling pipe 11 is connected to the cooling chamber of the fuel cell engine 101 and provides a circulating cooling medium to the cooling chamber. The heat exchanger 12 is connected to the cooling pipe 11 to cool the cooling medium; a purging module 2, which is connected to the cooling pipe 11 and supplies gas to the interior of the cooling pipe 11 to purge the cooling chamber and the cooling pipe 11; and a vacuum module 3, which is connected to the cooling pipe 11 and creates a negative pressure inside the cooling pipe 11.

[0035] The fuel cell engine test bench 100 is used for testing the fuel cell engine 101. The test bench 100 can simulate various operating conditions of the fuel cell engine 101 during actual operation, including temperature, pressure, and humidity. The test bench 100 can capture key performance parameters of the fuel cell engine 101, such as voltage, current, power, and efficiency, and monitor and record these parameters in real time to obtain specific test results.

[0036] The fuel cell engine test bench 100 includes a cooling module 1. During the test, the fuel cell engine 101 generates heat. The cooling module 1 can remove the heat generated by the fuel cell engine 101 during operation and maintain the fuel cell engine 101 within a suitable operating temperature range. This prevents the fuel cell engine 101 from generating too much heat, which could lead to excessively high internal temperature and thus affect the performance and service life of the fuel cell engine 101.

[0037] Specifically, the cooling module 1 includes a cooling pipe 11 and a heat exchanger 12. The cooling pipe 11 is connected to the cooling chamber of the fuel cell engine 101. The cooling pipe 11 is used to provide a circulating cooling medium to the cooling chamber. The cooling pipe 11 is a channel for the flow of the cooling medium. The cooling pipe 11 can deliver the cooling medium to the cooling chamber of the fuel cell engine 101. After entering the cooling chamber of the fuel cell engine 101, the cooling medium can absorb the heat generated by the fuel cell engine 101 during operation. Then, the cooling pipe 11 can output the cooling medium that has absorbed the heat from the cooling chamber of the fuel cell engine 101 for cooling.

[0038] The heat exchanger 12 is connected to the cooling pipe 11. The cooling medium that has absorbed the heat of the fuel cell engine 101 can flow into the heat exchanger 12 through the cooling pipe 11. The heat exchanger 12 can cool the cooling medium so that it can flow into the cooling chamber through the cooling pipe 11 again to absorb the heat generated by the fuel cell engine 101 again. This allows the cooling medium to circulate between the cooling pipe 11 and the cooling chamber, thereby cooling the fuel cell engine 101.

[0039] Specifically, the heat exchanger 12 may be equipped with a temperature control structure to ensure that the cooling medium after cooling can maintain a certain temperature, thereby maintaining the fuel cell engine 101 within a suitable operating temperature range and ensuring the normal operation of the fuel cell engine 101.

[0040] Optionally, the heat exchanger 12 can be a shell-and-shell heat exchanger, plate heat exchanger, or tubular heat exchanger, which can cool the cooling medium. This embodiment does not limit this type of heat exchanger.

[0041] In some embodiments, the fuel cell engine test bench 100 includes a purging module 2, which is connected to the cooling pipeline 11. After completing the testing process of the fuel cell engine 101, the hydrogen and deionized water in the internal chamber of the fuel cell engine 101 need to be thoroughly purged to ensure the subsequent handling and storage of the fuel cell engine 101. The purging module 2 is used to deliver gas into the cooling pipeline 11 to purge the cooling chamber and the cooling pipeline 11.

[0042] It is understood that the purging module 2 purifies the cooling chamber and cooling pipes 11 by supplying gas into the cooling pipes 11. The purging module 2 removes deionized water from the cooling pipes 11 by supplying gas, thereby preventing deionized water from remaining inside the fuel cell engine 101 and causing inconvenience in the subsequent handling and storage of the fuel cell engine 101.

[0043] The purging module 2 is connected to the cooling pipe 11, so that the purging gas can smoothly enter the interior of the cooling pipe 11, ensuring that the purging gas can enter the cooling chamber through the cooling pipe 11, thereby allowing both the cooling pipe 11 and the cooling chamber to be purged and deionized water removed by the gas delivered by the purging module 2.

[0044] Optionally, the gas supplied by the purging module 2 can be nitrogen. Nitrogen is free of moisture and impurities, ensuring that moisture is not introduced into the cooling chamber and cooling pipes 11 during the purging process. When the fuel cell engine 101 stops testing, the nitrogen supplied by the purging module can replace the hydrogen and air inside the fuel cell engine 101, removing residual hydrogen while purging deionized water. Simultaneously, nitrogen can be used as a protective gas to prevent oxidation or other chemical reactions inside the fuel cell engine 101.

[0045] In some embodiments, the fuel cell engine test bench 100 includes a vacuum module 3, which is connected to the cooling pipe 11. The vacuum module 3 is used to create a negative pressure inside the cooling pipe 11. After the purging process is completed, due to the complexity of the structure of the fuel cell engine 101 and the cooling pipe 11, it is difficult to completely drain the deionized water inside the cooling chamber and the cooling pipe 11. The vacuum module 3 is turned on after the purging process to create a negative pressure inside the cooling pipe 11.

[0046] It is understandable that the boiling point of deionized water decreases under negative pressure. After negative pressure is formed inside the cooling pipe 11 and the cooling chamber, the deionized water remaining inside the cooling chamber and the cooling pipe 11 can more easily turn into a gaseous state and be sucked out by the vacuum module 3, thereby achieving the purpose of further removing the deionized water inside the cooling chamber and the cooling pipe 11.

[0047] After the vacuum module 3 removes deionized water by creating negative pressure through vacuum, the purging module 2 can be used to purge the inside of the cooling chamber and the inside of the cooling pipe 11 a second time to ensure that the deionized water remaining inside the fuel cell engine 101 can be completely removed.

[0048] Thus, the fuel cell engine test bench 100 provided in this application embodiment can ensure the normal operation of the fuel cell engine 101 during testing through the cooling module 1. After the test is completed, the purging module 2 can initially remove the residual deionized water inside the fuel cell engine 101, and then the vacuum module 3 further converts the residual deionized water into gaseous state for discharge. Finally, a second purging is performed through the purging module 2. The combined use of the purging module 2 and the vacuum module 3 ensures that the deionized water inside the fuel cell engine 101 can be removed, making the subsequent handling and storage of the fuel cell engine 101 safer and more reliable.

[0049] As an optional implementation, the heat exchanger 12 includes a first heat exchanger 121 and a second heat exchanger 122. The cooling pipe 11 includes: a main cooling pipe 111, which is connected to the cooling chamber, and the first heat exchanger 121 is disposed on the main cooling pipe 111; an auxiliary cooling pipe 112, which is connected to the cooling chamber and is used to assist the main cooling pipe 111 in cooling the heat generated by the fuel cell engine 101; and the second heat exchanger 122 is disposed on the auxiliary cooling pipe 112.

[0050] The main cooling pipe 111 is connected to the cooling chamber of the fuel cell engine 101, and the main cooling pipe 111 can cool most of the heat generated by the fuel cell engine 101. The first heat exchanger 121 is installed in the main cooling pipe 111. The first heat exchanger 121 uses the principle of heat exchange to realize the transfer and dissipation of heat, so as to ensure that the cooling medium can be cooled down by passing through the first heat exchanger 121 before being delivered into the cooling chamber. This ensures that the main cooling pipe 111 can reduce the operating temperature of the fuel cell engine 101 and prevent the fuel cell engine 101 from overheating and causing performance degradation or damage.

[0051] The auxiliary cooling pipe 112 is also connected to the cooling chamber of the fuel cell engine 101. When the fuel cell engine 101 has excessive power or generates a lot of heat, the auxiliary cooling pipe 112 can assist the main cooling pipe 111 in cooling the fuel cell engine 101. The second heat exchanger 122 is located on the auxiliary cooling pipe 112. The second heat exchanger 122 also uses the principle of heat exchange to further absorb and disperse the excess heat generated by the fuel cell engine 101.

[0052] In this way, through the coordinated operation of the main cooling pipe 111 and the auxiliary cooling pipe 112, the fuel cell engine test bench 100 can ensure that the fuel cell engine 101 is always kept within a suitable operating temperature range during the test, thereby improving the accuracy and reliability of the test results of the fuel cell engine 101.

[0053] Vacuum module 3 is connected to the main cooling pipe 111. After the test, vacuum module 3 can use the negative pressure environment to make it easier for the residual deionized water in the main cooling pipe 111 and the cooling chamber to be converted into a gaseous state. Vacuum module 3 is also connected to the auxiliary cooling pipe 112. After the test, vacuum module 3 can use the negative pressure environment to make it easier for the residual deionized water in the auxiliary cooling pipe 112 and the cooling chamber to be converted into a gaseous state.

[0054] As an optional implementation, the main cooling pipe 111 includes a main inlet pipe 1111 and a main outlet pipe 1112, with the vacuum module 3 connected to the main outlet pipe 1112. The main inlet pipe 1111 introduces the cooling medium into the cooling chamber, allowing the cooling medium to absorb the heat generated by the fuel cell engine 101 within the cooling chamber. The main outlet pipe 1112 discharges the cooled medium that has absorbed heat, allowing the cooling medium to exchange heat and dissipate heat through the first heat exchanger 121, thus cooling the medium before it re-enters the main inlet pipe 1111 to form a circulation.

[0055] Meanwhile, the vacuum module 3 is connected to the main water outlet pipe 1112, so that the vacuum module 3 can be connected to the cooling chamber and the main water inlet pipe 1111 through the main water outlet pipe 1112. This ensures that the main water inlet pipe 1111, the main water outlet pipe 1112 and the interior of the cooling chamber can all form a negative pressure environment through the vacuum module 3, so that the deionized water in the main water inlet pipe 1111, the main water outlet pipe 1112 and the interior of the cooling chamber can be more fully converted into gaseous state and discharged.

[0056] The auxiliary cooling pipeline 112 includes an auxiliary water inlet pipe 1121 and an auxiliary water outlet pipe 1122, with the vacuum module 3 connected to the auxiliary water outlet pipe 1122. The auxiliary water inlet pipe 1121 introduces the cooling medium into the cooling chamber, allowing it to absorb the heat generated by the fuel cell engine 101 within the chamber. The auxiliary water outlet pipe 1122 discharges the cooled medium after heat absorption, enabling it to exchange heat and dissipate heat through the second heat exchanger 122, thus cooling the medium before it re-enters the auxiliary water inlet pipe 1121 to form a circulating cooling system.

[0057] Optionally, the auxiliary water outlet pipe 1122 may be equipped with a circulation pump 1123 to assist the cooling medium in circulating between the auxiliary water inlet pipe 1121 and the auxiliary water outlet pipe 1122.

[0058] Meanwhile, the vacuum module 3 is connected to the auxiliary water outlet pipe 1122, so that the vacuum module 3 can be connected to the cooling chamber and the auxiliary water inlet pipe 1121 through the auxiliary water outlet pipe 1122. This ensures that the auxiliary water inlet pipe 1121, the auxiliary water outlet pipe 1122 and the interior of the cooling chamber can all form a negative pressure environment through the vacuum module 3, so that the deionized water in the auxiliary water inlet pipe 1121, the auxiliary water outlet pipe 1122 and the interior of the cooling chamber can be more fully converted into gaseous state and discharged.

[0059] As an optional implementation, the vacuum module 3 includes: a first vacuum line 31 connected to the main water outlet pipe 1112; a second vacuum line 32 connected to the auxiliary water outlet pipe 1122; and a vacuum generator 33 connected to both the first vacuum line 31 and the second vacuum line 32, which is used to generate negative pressure in both the first vacuum line 31 and the second vacuum line 32.

[0060] The first vacuum line 31 is connected to the main water outlet pipe 1112. After the fuel cell engine 101 is tested, the first vacuum line 31 can guide the negative pressure generated by the vacuum generator 33 to act on the main cooling line 111, thereby forming a negative pressure inside the main cooling line 111, which lowers the boiling point of the deionized water inside the main cooling line 111, making it easier for the deionized water to be converted into gaseous state and reducing the residue of deionized water in the main cooling line 111.

[0061] The second vacuum line 32 is connected to the auxiliary water outlet pipe 1122. After the fuel cell engine 101 is tested, the second vacuum line 32 can guide the negative pressure generated by the vacuum generator 33 to act on the auxiliary cooling line 112, thereby creating a negative pressure inside the auxiliary cooling line 112, which lowers the boiling point of the deionized water inside the auxiliary cooling line 112, making it easier for the deionized water to be converted into gaseous state and reducing the residue of deionized water in the auxiliary cooling line 112.

[0062] The vacuum generator 33 is connected to the first vacuum line 31 and the second vacuum line 32 respectively. The vacuum generator 33 can generate negative pressure to form negative pressure inside the first vacuum line 31 and the second vacuum line 32, so that negative pressure is also formed inside the cooling chamber, the main cooling line 111 and the auxiliary cooling line 112, thereby removing the deionized water inside the cooling chamber, the main cooling line 111 and the auxiliary cooling line 112.

[0063] Optionally, the vacuum generator 33 can be a vacuum pump, a negative pressure fan, or other equipment capable of generating negative pressure; this embodiment does not limit this.

[0064] As an optional implementation, the cooling module 1 includes: a first cooling valve assembly 13 disposed on the main cooling pipe 111, the first cooling valve assembly 13 being used to control the connection of the main cooling pipe 111; and a second cooling valve assembly 14 disposed on the auxiliary cooling pipe 112, the second cooling valve assembly 14 being used to control the connection of the auxiliary cooling pipe 112.

[0065] The first cooling valve assembly 13 controls the connection of the main cooling pipe 111. When the main cooling pipe 111 is not needed to supply cooling medium, the first cooling valve assembly 13 can be closed, thereby shutting down the main cooling pipe 111. Similarly, the second cooling valve assembly 14 controls the connection of the auxiliary cooling pipe 112. When the auxiliary cooling pipe 112 is not needed to supply cooling medium, the second cooling valve assembly 14 can be closed, thereby shutting down the auxiliary cooling pipe 112.

[0066] In this way, when testing the fuel cell engine 101, different cooling pipes 11 can be used according to different operating conditions of the fuel cell engine 101, thereby improving the accuracy of cooling of the fuel cell engine 101 and reducing the use of cooling medium.

[0067] When the vacuum module 3 needs to create a negative pressure environment inside the main cooling pipe 111, the first cooling valve assembly 13 and the second cooling valve assembly 14 need to be closed, so that the main cooling pipe 111, the auxiliary cooling pipe 112 and the cooling chamber form a relatively sealed environment. This ensures that the vacuum module 3 can effectively create a negative pressure environment inside the main cooling pipe 111, the auxiliary cooling pipe 112 and the cooling chamber, promote the conversion of deionized water into gas, and further remove the deionized water inside the main cooling pipe 111, the auxiliary cooling pipe 112 and the cooling chamber.

[0068] As an optional implementation, the first cooling valve assembly 13 includes a first inlet valve 131 and a first outlet valve 132. The first inlet valve 131 is disposed on the main inlet pipe 1111, and the first outlet valve 132 is disposed on the main outlet pipe 1112. The connection between the first vacuum line 31 and the main outlet pipe 1112 is located between the first outlet valve 132 and the cooling chamber.

[0069] The first inlet valve 131 is installed on the main inlet pipe 1111. The first inlet valve 131 controls the inflow of the cooling medium to ensure that the cooling medium can enter the cooling chamber through the main inlet pipe 1111 as needed. The first outlet valve 132 is installed on the main outlet pipe 1112. The first outlet valve 132 controls the outflow of the cooling medium to ensure that the cooling medium can be discharged from the cooling chamber through the main outlet pipe 1112 as needed.

[0070] The connection between the first vacuum line 31 and the main water outlet pipe 1112 is located between the first water outlet valve 132 and the cooling chamber. This ensures that when the first water inlet valve 131 and the first water outlet valve 132 are closed, the main water inlet pipe 1111, the cooling chamber and the main water outlet pipe 1112 can form a negative pressure environment through the vacuum generator 33 connected by the first vacuum line 31, thereby accelerating the evaporation of deionized water.

[0071] The second cooling valve assembly 14 includes a second inlet valve 141 and a second outlet valve 142. The second inlet valve 141 is disposed on the auxiliary inlet pipe 1121, and the second outlet valve 142 is disposed on the auxiliary outlet pipe 1122. The connection between the second vacuum line 32 and the auxiliary outlet pipe 1122 is located between the second outlet valve 142 and the cooling chamber.

[0072] The second inlet valve 141 is installed on the auxiliary inlet pipe 1121. The second inlet valve 141 controls the inflow of the cooling medium to ensure that the cooling medium can enter the cooling chamber through the auxiliary inlet pipe 1121 as needed. The second outlet valve 142 is installed on the auxiliary outlet pipe 1122. The second outlet valve 142 controls the outflow of the cooling medium to ensure that the cooling medium can be discharged from the cooling chamber through the auxiliary outlet pipe 1122 as needed.

[0073] The connection between the second vacuum line 32 and the auxiliary water outlet pipe 1122 is located between the second water outlet valve 142 and the cooling chamber. This ensures that when the second water inlet valve 141 and the second water outlet valve 142 are closed, the auxiliary water inlet pipe 1121, the cooling chamber and the auxiliary water outlet pipe 1122 can form a negative pressure environment through the vacuum generator 33 connected by the second vacuum line 32, thereby accelerating the evaporation of deionized water.

[0074] As an optional implementation, one end of the second vacuum line 32 is connected to the auxiliary water outlet pipe 1122, and the other end of the second vacuum line 32 is connected to the first vacuum line 31. The vacuum generator 33 is disposed in the first vacuum line 31, and the vacuum generator 33 is located downstream of the connection between the first vacuum line 31 and the second vacuum line 32.

[0075] In this way, the interior of the first vacuum line 31 and the interior of the second vacuum line 32 can both form negative pressure through the same vacuum generator 33, which enables the fuel cell engine test bench 100 to be miniaturized, thereby saving the cost and space required for the fuel cell engine test bench 100.

[0076] In some embodiments, the vacuum module 3 includes: a first switching valve 34 disposed in the first vacuum line 31, the first switching valve 34 being used to control the opening and closing of the first vacuum line 31; and a second switching valve 35 disposed in the second vacuum line 32, the second switching valve 35 being used to control the opening and closing of the second vacuum line 32.

[0077] A first switching valve 34 is disposed in the first vacuum line 31. The first switching valve 34 can control the opening and closing of the first vacuum line 31. By opening or closing the first switching valve 34, it is possible to control whether the first vacuum line 31 participates in the vacuum process. When the first vacuum line 31 does not need to participate in the vacuum process, the first switching valve 34 is closed, thereby closing the first vacuum line 31. Similarly, when the first vacuum line 31 needs to participate in the vacuum process, the first switching valve 34 can be opened to ensure that a negative pressure environment can be formed inside the first vacuum line 31.

[0078] The second switching valve 35 is disposed in the second vacuum line 32. The second switching valve 35 can control the opening and closing of the second vacuum line 32. By opening or closing the second switching valve 35, it is possible to control whether the second vacuum line 32 participates in the vacuum process. When the second vacuum line 32 does not need to participate in the vacuum process, the second switching valve 35 is closed, thereby closing the second vacuum line 32. Similarly, when the second vacuum line 32 needs to participate in the vacuum process, the second switching valve 35 can be opened to ensure that a negative pressure environment can be formed inside the second vacuum line 32.

[0079] In this way, by independently controlling the opening and closing of the first vacuum line 31 and the second vacuum line 32, the fuel cell engine test bench 100 can adjust the use of vacuum lines according to different test requirements and the working state of the fuel cell engine 101, and close unnecessary vacuum lines, thereby reducing the energy consumption of the vacuum generator 33 and reducing the operating cost of the fuel cell engine test bench 100.

[0080] In some embodiments, the purging module 2 includes: an air source 21; a first purging pipe 22, the first end of which is connected to the air source 21 and the second end of which is connected to the main cooling pipe 111; and a second purging pipe 23, the first end of which is connected to the first purging pipe 22 and the second end of which is connected to the auxiliary cooling pipe 112.

[0081] The gas source 21 is the starting point of the purging module 2. The gas source 21 can provide high-pressure or high-speed gas, which can enter the cooling pipe 11 to purge and remove the residual deionized water in the cooling pipe 11.

[0082] The first end of the first purging pipe 22 is connected to the gas source 21 to ensure that gas can enter the first purging pipe 22. The second end of the first purging pipe 22 is connected to the main cooling pipe 111. In this way, gas from the gas source 21 can enter the main cooling pipe 111 through the first purging pipe 22 to purge the inside of the main cooling pipe 111.

[0083] The second end of the second purge pipe 23 is connected to the first purge pipe 22 to ensure that the gas in the first purge pipe 22 can enter the second purge pipe 23. The second end of the second purge pipe 23 is connected to the auxiliary cooling pipe 112. In this way, the gas from the gas source 21 can enter the auxiliary cooling pipe 112 through the second purge pipe 23 to purge the interior of the auxiliary cooling pipe 112.

[0084] Optionally, a sealing structure can be provided at the connection between the first purging pipe 22 and the gas source 21 to prevent gas from leaking from the connection between the first purging pipe 22 and the gas source 21, thereby improving the reliability of gas purging of the main cooling pipe 111, the auxiliary cooling pipe 112 and the cooling chamber, and preventing the waste of gas energy.

[0085] In some embodiments, the purging module 2 includes: a third switching valve 24 disposed in the first purging pipeline 22, the third switching valve 24 being disposed downstream of the connection between the first purging pipeline 22 and the second purging pipeline 23; and a fourth switching valve 25 disposed in the second purging pipeline 23.

[0086] The third switching valve 24 is located in the first purge line 22. The third switching valve 24 controls the opening and closing of the first purge line 22. By opening or closing the third switching valve 24, it is possible to control whether the first purge line 22 participates in the purge process. When the first purge line 22 is not required to participate in the purge process, the third switching valve 24 is closed, thereby closing the first purge line 22. Similarly, when the first purge line 22 is required to participate in the purge process, the third switching valve 24 can be opened to ensure that the gas inside the first purge line 22 can be blown into the main cooling line 111.

[0087] A fourth switching valve 25 is installed in the second purge line 23. The fourth switching valve 25 controls the opening and closing of the second purge line 23. By opening or closing the fourth switching valve 25, it is possible to control whether the second purge line 23 participates in the purge process. When the second purge line 23 does not need to participate in the purge process, the fourth switching valve 25 is closed, thereby closing the second purge line 23. Similarly, when the second purge line 23 needs to participate in the purge process, the fourth switching valve 25 can be opened to ensure that the gas inside the second purge line 23 can be blown into the main cooling line 111.

[0088] In some embodiments, the fuel cell engine test bench 100 further includes a gas supply module 4, the first end of which is connected to the fuel cell engine 101, and the second end of which is used to connect to the gas supply source 21. The gas supply module 4 is used to simulate gas supply. The exhaust module 5 is connected to the fuel cell engine 101 and is used to simulate exhaust gas emissions from the fuel cell engine 101.

[0089] Specifically, the gas supply module 4 includes: a first gas supply line 41, the first end of which is connected to an air source 44, and the second end of which is connected to a fuel cell engine 101; and a second gas supply line 42, the first end of which is connected to a hydrogen source 43, and the second end of which is connected to the fuel cell engine 101.

[0090] by Figure 2 For example, Figure 2 A simplified flowchart for removing deionized water provided in this embodiment of the application. The deionized water removal process of the fuel cell engine test bench 100 generally includes the following steps:

[0091] Step S1: After the fuel cell engine test bench 100 completes the test, the first cooling valve assembly 13 and the second cooling valve assembly 14 installed on the main cooling pipe 111 and the auxiliary cooling pipe 112 are shut off.

[0092] Step S2: Open the third switch valve 24 and the fourth switch valve 25 to allow the gas generated by the gas source 21 to be blown into the main cooling pipe 111 and the auxiliary cooling pipe 112 through the first purge pipe 22 and the second purge pipe 23.

[0093] Step S3: After the air source 21 has supplied air for a predetermined time for purging, close the third switch valve 24 and the fourth switch valve 25;

[0094] Step S4: Open the first switch valve 34 and the second switch valve 35, and the vacuum generator 33 is turned on, so that negative pressure is formed inside the first vacuum line 31 and the second vacuum line 32.

[0095] Step S5: Reduce the internal pressure of the first vacuum line 31 and the second vacuum line 32 to a predetermined pressure and maintain the operation of the vacuum generator 33 for a predetermined time.

[0096] Step S6: Close the first switch valve 34 and the second switch valve 35, and open the third switch valve 24 and the fourth switch valve 25, so that the gas generated by the gas source 21 is blown into the main cooling pipe 111 and the auxiliary cooling pipe 112 through the first purging pipe 22 and the second purging pipe 23 for secondary purging;

[0097] Step S7: After the air source 21 has supplied air for a predetermined time to purge, close the third switch valve 24 and the fourth switch valve 25.

[0098] Preferably, the predetermined duration of purging in step S3 can be 5 minutes; the predetermined pressure of extraction in step S5 can be -100 kPa, and the predetermined duration of extraction can be 20 minutes; the predetermined duration of purging in step S7 can be 2 minutes.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A fuel cell engine test bench, used for testing fuel cell engines, characterized in that, include: A cooling module, comprising cooling pipes and a heat exchanger, wherein the cooling pipes are connected to the cooling chamber of the fuel cell engine and are used to provide a circulating cooling medium to the cooling chamber, and the heat exchanger is connected to the cooling pipes to cool the cooling medium; A purging module is connected to the cooling pipeline and is used to deliver gas into the interior of the cooling pipeline to purge the cooling chamber and the cooling pipeline. A vacuum module is connected to the cooling pipeline and is used to create a negative pressure inside the cooling pipeline.

2. The fuel cell engine test bench according to claim 1, characterized in that, The heat exchanger includes a first heat exchanger and a second heat exchanger, and the cooling piping includes: The main cooling pipeline is connected to the cooling chamber, and the first heat exchanger is disposed on the main cooling pipeline. An auxiliary cooling pipe is connected to the cooling chamber and is used to assist the main cooling pipe in cooling the heat generated by the fuel cell engine. The second heat exchanger is disposed in the auxiliary cooling pipe. The vacuum module is connected to the main cooling pipeline; and / or The vacuum module is connected to the auxiliary cooling pipeline.

3. The fuel cell engine test bench according to claim 2, characterized in that, The main cooling pipeline includes a main water inlet pipe and a main water outlet pipe, and the vacuum module is connected to the main water outlet pipe; The auxiliary cooling pipeline includes an auxiliary water inlet pipe and an auxiliary water outlet pipe, and the vacuum module is connected to the auxiliary water outlet pipe.

4. The fuel cell engine test bench according to claim 3, characterized in that, The vacuum module includes: The first vacuum line is connected to the main water outlet pipe; The second vacuum line is connected to the auxiliary water outlet pipe; A vacuum generator is connected to the first vacuum line and the second vacuum line respectively, and the vacuum generator is used to generate negative pressure in the first vacuum line and the second vacuum line.

5. The fuel cell engine test bench according to claim 4, characterized in that, The cooling module includes: A first cooling valve assembly is disposed on the main cooling pipe, and the first cooling valve assembly is used to control the connection of the main cooling pipe; A second cooling valve assembly is disposed on the auxiliary cooling pipeline, and the second cooling valve assembly is used to control the connection of the auxiliary cooling pipeline.

6. The fuel cell engine test bench according to claim 5, characterized in that, The first cooling valve assembly includes a first inlet valve and a first outlet valve. The first inlet valve is disposed on the main inlet pipe, and the first outlet valve is disposed on the main outlet pipe. The connection between the first vacuum line and the main outlet pipe is located between the first outlet valve and the cooling chamber. The second cooling valve assembly includes a second inlet valve and a second outlet valve. The second inlet valve is disposed on the auxiliary inlet pipe, and the second outlet valve is disposed on the auxiliary outlet pipe. The connection between the second vacuum line and the auxiliary outlet pipe is located between the second outlet valve and the cooling chamber.

7. The fuel cell engine test bench according to claim 5, characterized in that, One end of the second vacuum line is connected to the auxiliary water outlet pipe, and the other end of the second vacuum line is connected to the first vacuum line; The vacuum generator is disposed in the first vacuum pipeline, and the vacuum generator is located downstream of the connection between the first vacuum pipeline and the second vacuum pipeline.

8. The fuel cell engine test bench according to claim 5, characterized in that, The vacuum module includes: A first switching valve is disposed in the first vacuum line, and the first switching valve is used to control the opening and closing of the first vacuum line. A second switching valve is installed in the second vacuum line, and the second switching valve is used to control the opening and closing of the second vacuum line.

9. The fuel cell engine test bench according to claim 2, characterized in that, The purging module includes: Gas source; A first purging line, the first end of which is connected to the gas source, and the second end of which is connected to the main cooling line; The second purge line has a first end connected to the first purge line and a second end connected to the auxiliary cooling line.

10. The fuel cell engine test bench according to claim 9, characterized in that, The purging module includes: A third switching valve is provided in the first purge line, and the third switching valve is located downstream of the connection between the first purge line and the second purge line; The fourth switching valve is located in the second purging pipeline.

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