Fuel cell automobile tail emission purification system, automobile and control method

Abstract

The invention provides a fuel cell automobile tail exhaust purification system, an automobile and a control method, and relates to the technical field of vehicles, the fuel cell automobile tail exhaust purification system comprises a steam-water separation device, the inlet end of the steam-water separation device is connected with a tail exhaust pipe of a fuel cell, and the outlet end of the steam-water separation device comprises an exhaust port and a drainage port; the water collecting assembly comprises a water collecting tank and a liquid level collecting unit, the inlet end of the water collecting tank is communicated with the water outlet, the water collecting tank is provided with at least two outlet ends, and the liquid level collecting unit is used for collecting liquid level height information of liquid in the water collecting tank; one outlet end of the water collecting tank is communicated with the inlet end of the water draining assembly; the other outlet end of the water collecting tank is communicated with the inlet end of the water pumping purification assembly; and the control module controls the drainage assembly to execute drainage operation and stop drainage operation according to the liquid level height information, and controls the water pumping purification assembly to execute water pumping purification operation.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a fuel cell vehicle tail exhaust purification system, a vehicle and a control method. Background Art

[0002] At present, fuel cell vehicles lack effective management of the water generated by the reaction during operation. A large amount of water will be generated during the fuel cell reaction, part of which will be directly discharged with the exhaust gas in the form of water vapor, and part of which will flow out through the tail of the exhaust pipe in the form of liquid water. If fuel cell vehicles are widely used, this drainage method will cause slippery roads, which will bring some hidden dangers to road traffic under certain weather conditions. For example, in winter in the north, it will cause the road surface to freeze, seriously affecting vehicle traffic and posing serious safety hazards. At the same time, the reaction during the operation of fuel cell vehicles will generate wastewater, and direct discharge will cause environmental pollution and waste of resources. Summary of the invention

[0003] The main purpose of the present invention is to provide a fuel cell vehicle tail exhaust purification system, vehicle and control method to solve the problem of reusing wastewater generated by reactions during the operation of fuel cell vehicles in the prior art.

[0004] In order to achieve the above-mentioned object, according to one aspect of the present invention, a fuel cell vehicle tail exhaust purification system is provided. The fuel cell vehicle tail exhaust purification system comprises: a steam-water separation device, the inlet end of the steam-water separation device is connected to the tail exhaust pipe of the fuel cell, and the outlet end of the steam-water separation device comprises an exhaust port and a drain port; a water collection component, the water collection component comprises a water collection tank and a liquid level acquisition unit, the inlet end of the water collection tank is connected to the drain port, the water collection tank has at least two outlet ends, and the liquid level acquisition unit is used to collect the liquid level height information of the liquid in the water collection tank; a drainage component, one of the outlet ends of the water collection tank is connected to the inlet end of the drainage component; a pumping purification component, the other outlet end of the water collection tank is connected to the inlet end of the pumping purification component; a control module, the control module controls the drainage component to perform drainage operation and stop drainage operation according to the liquid level height information, and controls the pumping purification component to stop pumping purification operation.

[0005] Furthermore, the water pumping and purification component includes: a water pump, the inlet end of the water pump is connected to an outlet end of the water collecting tank through a first water inlet pipe; a water purification device, the inlet end of the water purification device is connected to the outlet of the water pump through a second water inlet pipe, and the outlet end of the water purification device is provided with a water outlet pipe.

[0006] Furthermore, the water pump is electrically connected to the control module, and the control module is used to control the water pump to stop working according to the liquid level height information.

[0007] Furthermore, the drainage component includes: a first drain pipe, the inlet end of the first drain pipe is connected to an outlet end of the water collecting tank; an electromagnetic switch valve, one end of the electromagnetic switch valve is connected to the outlet end of the first drain pipe; a second drain pipe, the inlet end of the second drain pipe is connected to the other end of the electromagnetic switch valve, and the other end of the second drain pipe is used for drainage.

[0008] Furthermore, the electromagnetic switch valve is electrically connected to the control module, and the control module controls the electromagnetic switch valve to open or close according to the liquid level height information.

[0009] Furthermore, the inlet end of the steam-water separation device is connected to the tail pipe of the fuel cell through a connecting pipeline, the water outlet is connected to the inlet end of the water collecting tank through a water collecting pipe, and the exhaust port is connected to an exhaust pipeline.

[0010] According to another aspect of the present invention, a vehicle is provided. The vehicle includes a fuel cell vehicle tail exhaust purification system. The fuel cell vehicle tail exhaust purification system is the fuel cell vehicle tail exhaust purification system of the above embodiment.

[0011] According to another aspect of the present invention, a control method for a fuel cell vehicle tail exhaust purification system is provided, wherein the fuel cell vehicle tail exhaust purification system is the fuel cell vehicle tail exhaust purification system of the above-mentioned embodiment, and the method comprises: obtaining liquid level height information of the liquid in the water collecting tank; judging whether the liquid level height information satisfies a preset liquid level limit, wherein the preset liquid level limit comprises at least: an upper limit value of the water storage level, a lower limit value of the water storage level, and a lower limit value of the water pumping level; when it is determined that the liquid level height information does not satisfy the preset liquid level limit, generating a control strategy set, the control strategy set being used to control the drainage component to perform drainage operations and stop drainage operations, and to control the pumping purification component to stop the pumping purification operations.

[0012] Furthermore, when it is determined that the liquid level height information does not meet the preset liquid level limit, a control strategy set is generated, including: when it is determined that the liquid level height information exceeds the upper limit of the water storage level, a first control strategy in the control strategy set is generated, and the first control strategy is used to control the electromagnetic switch valve to open and the second drain pipe to drain water.

[0013] Furthermore, when it is determined that the liquid level height information does not meet the preset liquid level limit, a control strategy set is generated, including: when it is determined that the liquid level height information is lower than the lower limit of the water storage level, a second control strategy in the control strategy set is generated, and the second control strategy is used to control the electromagnetic switch valve to close, and the second drain pipe stops draining.

[0014] Furthermore, when it is determined that the liquid level height information does not meet the preset liquid level limit, a control strategy set is generated, including: when it is determined that the liquid level height information is lower than the pumping liquid level lower limit, a third control strategy in the control strategy set is generated, and the third control strategy is used to control the pump to stop working.

[0015] By applying the technical solution of the present invention, a gas-water separation device is provided at the rear end of the tail exhaust pipe of the fuel cell to separate the gas-liquid of the reaction generated water, and the water outlet of the gas-water separation device is connected to a water collecting tank for liquid storage. A liquid level collection unit is provided in the water collecting tank to collect the liquid level height information of the liquid in the water collecting tank. The pumping and purification component can further purify the collected liquid, thereby improving the tail exhaust purification effect. The control module can control the drainage and pumping and purification operations in real time according to the liquid level height information, thereby avoiding continuous drainage behavior of the vehicle during operation, thereby regulating the drainage of the vehicle, and making the operation of the system more intelligent and automated. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 It shows a schematic structural diagram of a tail exhaust purification system for a fuel cell vehicle according to the present invention;

[0018] Figure 2 A schematic flow chart showing a first embodiment of a control method for a fuel cell vehicle tail exhaust purification system according to the present invention is shown;

[0019] Figure 3 A flow chart of a second embodiment of a control method for a fuel cell vehicle tail exhaust purification system according to the present invention is shown.

[0020] The above drawings include the following reference numerals:

[0021] 10. Steam-water separation device;

[0022] 13. Connecting pipeline; 14. Exhaust pipeline;

[0023] 20. Water collection assembly;

[0024] 21. Water collecting tank; 22. Liquid level collection unit; 23. Water collecting pipe;

[0025] 30. Drainage assembly;

[0026] 31. First drain pipe; 32. Solenoid switch valve; 33. Second drain pipe;

[0027] 40. Water pumping and purification components;

[0028] 41. water pump; 42. water purification device; 43. first water inlet pipe; 44. second water inlet pipe; 45. water outlet pipe;

[0029] 50. Control module. DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0032] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0033] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for the sake of clarity, the thickness of the layers and regions may be enlarged, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted.

[0034] Combination Figure 1 As shown, according to a specific embodiment of the present invention, a fuel cell vehicle tail exhaust purification system is provided.

[0035] Specifically, Figure 1As shown, the tail exhaust purification system of a fuel cell vehicle includes: a steam-water separation device 10, the inlet end of the steam-water separation device 10 is connected to the tail exhaust pipe of the fuel cell, and the outlet end of the steam-water separation device 10 includes an exhaust port and a drain port; a water collecting component 20, the water collecting component 20 includes a water collecting tank 21 and a liquid level acquisition unit 22, the inlet end of the water collecting tank 21 is connected to the drain port, the water collecting tank 21 has at least two outlet ends, and the liquid level acquisition unit 22 is used to collect liquid level height information of the liquid in the water collecting tank 21; a drainage component 30, one of the outlet ends of the water collecting tank 21 is connected to the inlet end of the drainage component 30; a water pumping and purification component 40, the other outlet end of the water collecting tank 21 is connected to the inlet end of the water pumping and purification component 40; a control module 50, the control module 50 controls the drainage component 30 to perform and stop drainage operations according to the liquid level height information, and controls the water pumping and purification component 40 to stop the water pumping and purification operations.

[0036] In this embodiment, a steam-water separation device 10 is provided at the rear end of the tail exhaust pipe of the fuel cell to separate the steam-liquid of the water generated by the reaction, and the water outlet of the steam-water separation device is connected to the water collecting tank 21 for liquid storage. A liquid level collection unit 22 is provided in the water collecting tank 21 for collecting the liquid level information of the liquid in the water collecting tank 21. The pumping and purification component can further purify the collected liquid, thereby improving the tail exhaust purification effect. The control module can control the drainage and pumping and purification operations in real time according to the liquid level information, thereby avoiding continuous drainage of the vehicle during operation, thereby regulating the drainage of the vehicle, and making the operation of the system more intelligent and automated.

[0037] In this embodiment, the liquid level acquisition unit 22 is a liquid level sensor. In other embodiments, the liquid level acquisition unit 22 can also use a pressure sensor to collect the liquid level. By measuring the gas pressure above the liquid surface, the liquid level height can be indirectly inferred. This method is suitable for some specific liquids and environmental conditions and can provide accurate liquid level information.

[0038] Furthermore, the water pumping and purification component 40 includes: a water pump 41, the inlet end of the water pump 41 is connected to an outlet end of the water collecting tank 21 through a first water inlet pipe 43; a water purification device 42, the inlet end of the water purification device 42 is connected to the outlet of the water pump 41 through a second water inlet pipe 44, and the outlet end of the water purification device 42 is provided with a water outlet pipe 45.

[0039] The combination of the water pump 41 and the water purifier 42 realizes the circulation extraction and purification of water, effectively improving the utilization rate and purification effect of water. Through the design of the first water inlet pipe 43 and the second water inlet pipe 44, the diversion of water inlet and outlet is realized, avoiding the mixing and cross contamination of water, and ensuring the normal operation and purification effect of the water purifier 42. The outlet end of the water purifier 42 is provided with a water outlet pipe 45, which is convenient for users to directly obtain purified water, improving the convenience and practicality of use.

[0040] Furthermore, the water pump 41 is electrically connected to the control module 50 , and the control module 50 is used to control the water pump 41 to stop working according to the liquid level information.

[0041] Specifically, the control module 50 is electrically connected to the liquid level acquisition unit 22 through a first wiring harness, and the control module 50 is electrically connected to the water pump 41 through a second wiring harness. The control module 50 receives the liquid level height information of the liquid in the water collecting tank 21 detected by the liquid level acquisition unit 22, and compares the liquid level height information with a preset lower limit of the water pumping level. When the liquid level height information is lower than the lower limit of the water pumping level, the control module 50 controls the water pump 41 to stop pumping water to prevent too little liquid in the water collecting tank 21 from affecting the operation and safety of the overall system.

[0042] Furthermore, the drainage assembly 30 includes: a first drainage pipe 31, the inlet end of the first drainage pipe 31 is connected to an outlet end of the water collecting tank 21; an electromagnetic switch valve 32, one end of the electromagnetic switch valve 32 is connected to the outlet end of the first drainage pipe 31; a second drainage pipe 33, the inlet end of the second drainage pipe 33 is connected to the other end of the electromagnetic switch valve 32, and the other end of the second drainage pipe 33 is used for drainage.

[0043] Specifically, the drainage component 30 realizes the function of effectively draining the water in the water collection tank 21 through the combination of the first drainage pipe 31, the electromagnetic switch valve 32 and the second drainage pipe 33. Among them, the electromagnetic switch valve 32 can control the timing of drainage as needed, thereby improving the flexibility and accuracy of drainage. At the same time, the drainage component 30 has a simple structure, convenient operation, easy maintenance and cleaning, and improves the reliability and stability of the equipment. On the whole, the drainage component 30 can effectively solve the problem of water discharge in the water collection tank 21, ensure the normal operation of the equipment, and improve the use efficiency and life of the equipment.

[0044] Furthermore, the electromagnetic switch valve 32 is electrically connected to the control module 50 , and the control module 50 controls the electromagnetic switch valve 32 to open or close according to the liquid level information.

[0045] Specifically, the electromagnetic switch valve 32 is electrically connected to the control module 50 through a third wiring harness. The control module 50 receives the liquid level height information of the liquid in the water collecting tank 21 detected by the liquid level acquisition unit 22, and compares the liquid level height information with a preset upper limit of the water storage level. When the liquid level height information is higher than the upper limit of the water storage level, the control module 50 controls the electromagnetic switch valve 32 to open, and the first drain pipe 31 and the second drain pipe 33 drain water. When the liquid level height information is lower than the lower limit of the water storage level, the control module 50 controls the electromagnetic switch valve 32 to close and stop draining, thereby improving the degree of automation of the system.

[0046] Furthermore, the inlet of the steam-water separation device is connected to the tail pipe of the fuel cell through the connecting pipe 13 , the drain port is connected to the inlet of the water collecting tank 21 through the water collecting pipe 23 , and the exhaust port is connected to the exhaust pipe 14 .

[0047] Specifically, the steam-water separator 10 can be a baffle-type steam-water separator that changes the air flow direction, or a centrifugal cyclone-type cyclone steam-water separator. The function of the steam-water separator 10 is to separate and collect water from the tail exhaust of the fuel cell from the air. The separated water is transported to the water collection tank 21 through the water collection pipe 23.

[0048] According to another aspect of the present invention, a vehicle is provided, the vehicle includes a fuel cell vehicle tail exhaust purification system, and the fuel cell vehicle tail exhaust purification system is the fuel cell vehicle tail exhaust purification system of the above embodiment. The fuel cell vehicle tail exhaust purification system includes: a steam-water separation device 10, the inlet end of the steam-water separation device 10 is connected to the tail exhaust pipe of the fuel cell, and the outlet end of the steam-water separation device 10 includes an exhaust port and a drain port; a water collection component 20, the water collection component 20 includes a water collection tank 21 and a liquid level acquisition unit 22, the inlet end of the water collection tank 21 is connected to the drain port, the water collection tank 21 has at least two outlet ends, and the liquid level acquisition unit 22 is used to collect the liquid level height information of the liquid in the water collection tank 21; a drainage component 30, one of the outlet ends of the water collection tank 21 is connected to the inlet end of the drainage component 30; a pumping purification component 40, the other outlet end of the water collection tank 21 is connected to the inlet end of the pumping purification component 40; a control module 50, the control module 50 controls the drainage component 30 to perform drainage operations and stop drainage operations according to the liquid level height information, and controls the pumping purification component 40 to stop pumping purification operations.

[0049] By setting a steam-water separation device 10 at the rear end of the tail exhaust pipe of the fuel cell, the reaction generated water is separated into steam and liquid, and the water outlet of the steam-water separation device is connected to the water collecting tank 21 for liquid storage. A liquid level collection unit 22 is set in the water collecting tank 21 for collecting the liquid level height information of the liquid in the water collecting tank 21. The pumping and purification component can further purify the collected liquid, thereby improving the tail exhaust purification effect. The control module can control the drainage and pumping and purification operations in real time according to the liquid level height information, thereby avoiding continuous drainage behavior of the vehicle during operation, thereby regulating vehicle drainage, and making the operation of the system more intelligent and automated.

[0050] like Figure 2 According to another aspect of the present invention, a control method for a fuel cell vehicle tail exhaust purification system is provided. The fuel cell vehicle tail exhaust purification system is the fuel cell vehicle tail exhaust purification system of the above embodiment. The method comprises:

[0051] Step S10: obtaining the liquid level information of the liquid in the water collecting tank 21.

[0052] Step S11: Determine whether the liquid level height information meets the preset liquid level limit, wherein the preset liquid level limit includes at least: an upper limit value of the water storage level, a lower limit value of the water storage level, and a lower limit value of the water pumping level.

[0053] Step S14: When it is determined that the liquid level height information does not meet the preset liquid level limit, a control strategy set is generated, and the control strategy set is used to control the drainage component 30 to perform drainage operations and stop drainage operations, and control the pumping and purification component 40 to stop pumping and purification operations.

[0054] This method can effectively monitor and control the liquid level in the tail exhaust purification system of fuel cell vehicles, ensure the normal operation of the system and maintain efficient purification effects. By timely adjusting the drainage and pumping purification operations, it can effectively avoid the situation where the liquid level is too high or too low, improve the stability and reliability of the system, extend the service life of the equipment, and reduce maintenance costs. At the same time, this method can also improve the emission performance of fuel cell vehicles and reduce the impact on the environment.

[0055] Further, step S14: when it is determined that the liquid level height information does not meet the preset liquid level limit, a control strategy set is generated, including: when it is determined that the liquid level height information exceeds the upper limit of the water storage level, a first control strategy in the control strategy set is generated, and the first control strategy is used to control the electromagnetic switch valve 32 to open and the second drain pipe 33 to drain water.

[0056] This arrangement enables real-time monitoring and control of the liquid level, ensures that the water storage level is within a safe range, and improves the stability and safety of the system. By controlling the electromagnetic switch valve 32 and the second drain pipe 33 to drain water, the liquid level is effectively reduced, avoiding the possible danger caused by the liquid level exceeding the upper limit of the water storage level. By generating a control strategy set, the automation of the system is improved, the need for manual intervention is reduced, and work efficiency and accuracy are improved. The equipment and pipelines are effectively protected, the service life of the equipment is extended, and the maintenance cost is reduced.

[0057] Further, step S14: when it is determined that the liquid level height information does not meet the preset liquid level limit, a control strategy set is generated, including: when it is determined that the liquid level height information is lower than the lower limit of the water storage level, a second control strategy in the control strategy set is generated, and the second control strategy is used to control the electromagnetic switch valve 32 to close and the second drain pipe 33 to stop draining.

[0058] This control strategy set can effectively protect water storage equipment and avoid equipment damage or water waste due to low liquid level. By closing the electromagnetic switch valve and stopping drainage in time, the water storage level can be kept within a safe range to ensure the normal operation of the equipment and the effective use of water resources. At the same time, this control strategy set can also improve the automation of the system, reduce manual intervention, and improve operating efficiency and stability.

[0059] Further, step S14: when it is determined that the liquid level height information does not meet the preset liquid level limit, a control strategy set is generated, including: when it is determined that the liquid level height information is lower than the lower limit of the pumping level, a third control strategy in the control strategy set is generated, and the third control strategy is used to control the water pump 41 to stop working.

[0060] By generating a control strategy set, when the liquid level information does not meet the preset liquid level limit, corresponding control measures can be taken in time to ensure that the system operates within a safe range. In particular, the third control strategy can ensure that when the liquid level is lower than the lower limit of the pumping level, the pump is stopped in time to avoid equipment damage or abnormal system operation due to low liquid level, thereby improving the stability and reliability of the system.

[0061] In another embodiment of the present application, during the operation of the fuel cell vehicle, hydrogen and air enter the fuel cell stack respectively, and output electrical energy through electrochemical reaction. The generated water and water vapor flow into the connecting pipeline 13, and are separated by the steam-water separation device 10. After separation, the gas is discharged through the exhaust pipeline 14, and the separated liquid water flows into the water collection tank 21 through the water collection pipe 13. A liquid level acquisition unit 22 is set in the water collection tank 21, which can monitor the amount of water stored in the water collection tank. Based on the volume of the liquid collection tank, the upper limit of water storage, the lower limit of water storage and the lower limit of water pumping can be set according to a certain volume ratio. The liquid level acquisition unit 22 outputs a corresponding voltage signal to the HCU controller based on the liquid level height. A first drain pipe 31 is set at the bottom of the water collection tank 21, and is connected to the second drain pipe 33 through an electromagnetic switch valve 32. The electromagnetic switch valve 32 is in a normally closed state when the power is off, and the electromagnetic switch valve 32 is open when the power is on. The water pump 41 can be controlled according to the electronic button or hard-wire switch set on the instrument.

[0062] like Figure 3 The control logic shown is that when the voltage signal output by the liquid level sensor reaches the set upper limit of the water level in the water collection tank, the HCU controls the solenoid switch valve to be powered on, the solenoid switch valve opens, and the water collection tank starts to drain. When the voltage signal output by the liquid level sensor reaches the set lower limit of the water collection tank, the HCU controls the solenoid switch valve to be powered off, the solenoid switch valve closes, and the water collection tank stops draining. When the demand for drinking water is triggered, the electric water pump draws water from the liquid collection tank, filters it through the water purification device, and provides it for people to drink. When the liquid level in the water collection tank is lower than the lower limit of the pumping, the electric pump stops working.

[0063] In some optional embodiments, the volume of the water collecting tank 21 is V, and a liquid level acquisition unit 22 is provided in the water collecting tank 21 to monitor the liquid level height in the water collecting tank. The upper limit of the water storage level, the lower limit of the water storage level, and the lower limit of the water pumping level can be designed according to the volume of the water collecting tank 21, and the corresponding voltage values ​​can be output. For example, if the upper limit of the water storage level corresponds to the volume of the water collecting tank 21 of 0.9V, the output voltage value is VH at this time; if the lower limit of the water storage level corresponds to the volume of the water collecting tank 21 of 0.5V, the output voltage value is VL1 at this time; if the lower limit of the water pumping level corresponds to the volume of the water collecting tank 21 of 0.1V, the output voltage value is VL2 at this time; assuming that VH>VL1>VL2, and vice versa;

[0064] The bottom of the water collecting tank 21 is connected to an electromagnetic switch valve 32. When the electromagnetic switch valve 32 is powered off, it is normally closed, and the first drain pipe 31 and the second drain pipe 33 are closed; when the electromagnetic switch valve 32 is powered on, it is normally open, and the first drain pipe 31 and the second drain pipe 33 are open.

[0065] The liquid level acquisition unit 22 detects the liquid level height and controls the output of the corresponding voltage signal to the control module (i.e., the vehicle HCU). When the water in the water collection tank 21 reaches the set upper limit of the water storage level, that is, when the control module (i.e., the vehicle HCU) determines that the received voltage signal is ≥ VH, the electromagnetic switch valve 32 is powered on, the electromagnetic switch valve 32 is opened, and the water collection tank 21 is drained outward; the control module (i.e., the vehicle HCU) simultaneously sends instructions to the instrument, and the instrument prompts the "vehicle drainage" information; when the water in the water collection tank 21 is reduced to the set lower limit of the water storage level, that is, when the control module (i.e., the vehicle HCU) determines that the received voltage signal is ≤ VL, the electromagnetic switch valve 32 is powered off, the electromagnetic switch valve is closed, and the water collection tank 21 is drained outward; the control module (i.e., the vehicle HCU) simultaneously sends instructions to the instrument, and the instrument prompts the "vehicle drainage is completed" information. The above process is repeated during the operation of the vehicle.

[0066] When the driver or passenger presses the drinking water demand button, the water pump 41 starts to operate, pumps water from the water collection tank 21, and sends it to the water purification device 42 for filtration. The filtered water is discharged through the water outlet set in the vehicle.

[0067] When the water in the water collecting tank 21 is reduced to the set lower limit of the pumping liquid level, the pump 41 stops running and the instrument displays the message "insufficient water storage".

[0068] The water purification device 42 can be a multi-stage filter element such as non-woven cotton, activated carbon, and permeable membrane, which is not limited here. It is assumed that the water purified by the water purification device meets the drinking standard of the human body;

[0069] A heating device and a refrigeration device may be provided behind the water purification device 42, and can perform corresponding actions according to demand instructions to meet different needs.

[0070] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0071] By setting a gas-water separation device on the tail pipe at the rear end of the fuel cell drain valve, the water generated by the reaction is separated into gas and liquid, and transported to the water collection tank for storage through the connecting pipeline. A liquid level sensor is set in the water collection tank. When the set liquid level is reached, the water is drained. The bottom of the water collection tank is connected to the electric control stop valve and the electric water pump through pipelines. The electromagnetic switch valve is usually in a normally closed state. When the drainage command is received, the valve is opened to drain. When the vehicle receives a drinking water demand command, the electric water pump starts to operate and pumps the water from the water collection tank to the water purification device for filtration and purification, and then provides drinking water to the driver and passengers through the water outlet set in the vehicle. After adopting this strategy, the continuous drainage behavior of the vehicle during operation can be avoided, the drainage of the vehicle can be standardized, and the vehicle can achieve self-production and self-use of water.

[0072] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0073] In addition to the above, it should be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of the present invention.

[0074] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0075] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fuel cell vehicle tail exhaust purification system, characterized in that: include: A steam-water separation device (10), wherein the inlet end of the steam-water separation device (10) is connected to the tail pipe of the fuel cell, and the outlet end of the steam-water separation device (10) includes an exhaust port and a drain port; A water collection component (20), the water collection component (20) comprising a water collection tank (21) and a liquid level collection unit (22), the inlet end of the water collection tank (21) being in communication with the drain port, the water collection tank (21) having at least two outlet ends, and the liquid level collection unit (22) being used to collect liquid level height information of the liquid in the water collection tank (21); A drainage component (30), wherein one of the outlet ends of the water collecting tank (21) is in communication with an inlet end of the drainage component (30); A water pumping and purification component (40), wherein the other outlet end of the water collecting tank (21) is connected to the inlet end of the water pumping and purification component (40); A control module (50), wherein the control module (50) controls the drainage component (30) to perform drainage operations and stop drainage operations according to the liquid level height information, and controls the water pumping and purification component (40) to stop water pumping and purification operations.

2. The fuel cell vehicle tail exhaust purification system according to claim 1, characterized in that: The water pumping and purification component (40) comprises: A water pump (41), wherein the inlet end of the water pump (41) is connected to an outlet end of the water collecting tank (21) through a first water inlet pipe (43); A water purifier (42), wherein the inlet end of the water purifier (42) is connected to the outlet of the water pump (41) via a second water inlet pipe (44), and the outlet end of the water purifier (42) is provided with a water outlet pipe (45).

3. The fuel cell vehicle tail exhaust purification system according to claim 2, characterized in that: The water pump (41) is electrically connected to the control module (50), and the control module (50) is used to control the water pump (41) to stop working according to the liquid level height information.

4. The fuel cell vehicle tail exhaust purification system according to claim 1, characterized in that: The drainage assembly (30) comprises: A first drainage pipe (31), wherein an inlet end of the first drainage pipe (31) is connected to an outlet end of the water collecting tank (21); an electromagnetic switch valve (32), one end of the electromagnetic switch valve (32) being in communication with the outlet end of the first drain pipe (31); A second drain pipe (33), the inlet end of the second drain pipe (33) is connected to the other end of the electromagnetic switch valve (32), and the other end of the second drain pipe (33) is used for draining water.

5. The fuel cell vehicle tail exhaust purification system according to claim 4, characterized in that: The electromagnetic switch valve (32) is electrically connected to the control module (50), and the control module (50) controls the electromagnetic switch valve (32) to open or close according to the liquid level height information.

6. The fuel cell vehicle tail exhaust purification system according to claim 1, characterized in that: The inlet end of the steam-water separation device (10) is connected to the tail pipe of the fuel cell through a connecting pipeline (13), the water outlet is connected to the inlet end of the water collecting tank (21) through a water collecting pipe (23), and the exhaust port is connected to an exhaust pipeline (14).

7. A vehicle, characterized in that: The vehicle comprises a fuel cell vehicle tail exhaust purification system, and the fuel cell vehicle tail exhaust purification system is the fuel cell vehicle tail exhaust purification system according to any one of claims 1-6.

8. A control method for a fuel cell vehicle tail exhaust purification system, characterized in that: The fuel cell vehicle tail exhaust purification system is the fuel cell vehicle tail exhaust purification system according to any one of claims 1 to 6, and the method comprises: Obtaining liquid level information of the liquid in the water collecting tank (21); Determine whether the liquid level height information meets the preset liquid level limit, wherein the preset liquid level limit includes at least: an upper limit value of the water storage level, a lower limit value of the water storage level, and a lower limit value of the water pumping level; When it is determined that the liquid level height information does not meet the preset liquid level limit, a control strategy set is generated, wherein the control strategy set is used to control the drainage component (30) to perform drainage operations and stop drainage operations, and to control the pumping and purification component (40) to stop pumping and purification operations.

9. The control method of the fuel cell vehicle tail exhaust purification system according to claim 8, characterized in that: When it is determined that the liquid level height information does not meet the preset liquid level limit, a control strategy set is generated, including: When it is determined that the liquid level height information exceeds the upper limit of the water storage level, a first control strategy in the control strategy set is generated, wherein the first control strategy is used to control the electromagnetic switch valve (32) to open and the second drain pipe (33) to drain water.

10. The control method of the fuel cell vehicle tail exhaust purification system according to claim 8, characterized in that: When it is determined that the liquid level height information does not meet the preset liquid level limit, a control strategy set is generated, including: When it is determined that the liquid level height information is lower than the lower limit of the water storage level, a second control strategy in the control strategy set is generated, wherein the second control strategy is used to control the electromagnetic switch valve (32) to close and the second drain pipe (33) to stop draining water.

11. The control method of the fuel cell vehicle tail exhaust purification system according to claim 8, characterized in that: When it is determined that the liquid level height information does not meet the preset liquid level limit, a control strategy set is generated, including: When it is determined that the liquid level height information is lower than the water pumping liquid level lower limit value, a third control strategy in the control strategy set is generated, and the third control strategy is used to control the water pumping pump (41) to stop working.

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