Vehicle hydrogen fuel cell tail drainage water collecting box and control method

Abstract

The invention discloses a vehicle hydrogen fuel cell tail drainage water collecting box and a control method, and relates to the technical field of vehicle tail drainage water collecting systems. Comprising a tail drainage water collecting box body, a collecting box water outlet and a tail drainage water collecting port are integrated on the tail drainage water collecting box body, a water baffle is arranged in the tail drainage water collecting port, the bottom end of the water baffle extends into the tail drainage water collecting box body, and the tail drainage water collecting port is connected with an exhaust port. An electric control drain valve is arranged at the water outlet of the collecting box, the water outlet of the collecting box is connected with an external whole vehicle water pump and is used for conveying water in the tail drainage water collecting box main body to a required end, and a multi-stage liquid level sensor is arranged in the tail drainage water collecting box main body. Wastewater generated during working of the hydrogen fuel cell is collected, and the collected tail drainage water can be reused and can also be drained at a designated place, so that waste caused by direct drainage to the outside of a vehicle is avoided; freezing and safety influence caused by direct drainage of the tail drainage water to the ground in winter are avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of vehicle tail water drainage collection systems, and in particular relates to a vehicle hydrogen fuel cell tail water drainage collection box and a control method. Background Art

[0002] In recent years, more and more hydrogen fuel cell vehicles have been developed. During the operation of hydrogen fuel cells, hydrogen and oxygen react chemically under the action of catalysts, and the main product is water (water vapor). Inside the battery, water is generated in gaseous form and may diffuse with the flow of reaction gases. However, when the humidity in the reaction gas is high or the battery is operating at high current for a long time, liquid water may be generated inside the battery, which requires appropriate gas-liquid separation to avoid negative impact on battery performance.

[0003] At present, the water generated by the normal operation of hydrogen fuel cells is directly discharged outside the vehicle, causing waste; and in winter, the water discharged to the ground can easily cause the ground to freeze, posing a safety hazard. Summary of the invention

[0004] The purpose of the present invention is to solve the deficiencies of the above-mentioned background technology and to provide a tail water collection box and a control method for a vehicle hydrogen fuel cell.

[0005] The technical solution adopted by the present invention is: a tail water drainage collection box for a vehicle hydrogen fuel cell, including a tail water drainage collection box body, the tail water drainage collection box body is integrated with a collection box outlet and a tail water drainage collection port, a water baffle is arranged in the tail water drainage collection port, the bottom end of the water baffle extends into the tail water drainage collection box body, the tail water drainage collection port is connected to the exhaust port, an electrically controlled drain valve is provided at the collection box outlet, the collection box outlet is connected to an external vehicle water pump for transporting water in the tail water drainage collection box body to the required end, and a multi-stage liquid level sensor is provided in the tail water drainage collection box body.

[0006] In a further preferred structure, a wave-breaking plate is provided inside the tail water collection box body.

[0007] In a further preferred structure, the wave-breaking plate comprises a plurality of partitions, and the plurality of partitions are cross-connected or arranged at intervals.

[0008] In a further preferred structure, a filling port is provided on the tail water collection box body.

[0009] A control method for a tail water collection box of a hydrogen fuel cell for a vehicle, comprising:

[0010] When the water level in the tail drain collection box body does not reach the low liquid level alarm line of the multi-level liquid level sensor, the multi-level liquid level sensor feeds back the low liquid level signal to the vehicle controller, and the vehicle controller controls the vehicle water pump not to run and controls the electronically controlled drain valve to be in a closed state;

[0011] When the upper limit of the water level in the tail drain collection tank is between the high and low level alarm lines of the multi-stage liquid level sensor, the multi-stage liquid level sensor will feed back the water level signal to the vehicle controller. If there is a water demand at the required end, the vehicle controller will control the vehicle water pump to run, and the water pump suction port will be connected to the collection tank outlet. The water in the tail drain collection tank is transported to the required end through the vehicle water pump, and the vehicle controller will control the electronically controlled drain valve to be closed.

[0012] Also includes:

[0013] When the upper limit of the water level in the tail drain collection tank is above the high level alarm line of the multi-level liquid level sensor, the multi-level liquid level sensor will feed back the water level signal to the vehicle controller. If there is a water demand at the required end, the vehicle controller will control the vehicle water pump to run, and the water in the tail drain collection tank will be delivered to the required end through the vehicle water pump. The vehicle controller will control the electronically controlled drain valve to be closed.

[0014] When the upper limit of the water level in the tail water collection box is above the high level alarm line of the multi-stage liquid level sensor, the multi-stage liquid level sensor will feed back the water level signal to the vehicle controller. If there is no water demand at the required end, the vehicle controller will control the vehicle water pump not to run and control the electronically controlled drain valve to be in the open state, and the water will be discharged to the outside of the vehicle through the electronically controlled drain valve.

[0015] In the above technical solution, when the water in the tail water drainage collection box body is discharged to the outside of the vehicle through the electronically controlled drain valve, the ambient temperature must be greater than 0°C or less than 0°C.

[0016] The tail water collection box of the vehicle hydrogen fuel cell of the present invention collects waste water generated when the hydrogen fuel cell is working. The collected tail water can be reused (for car washing, brake cooling, vehicle radiator cooling, etc.), or it can be discharged to a designated location to avoid direct discharge outside the vehicle and cause waste.

[0017] The present invention adds a set of tail water drainage collection box devices to the vehicle matched with the hydrogen fuel cell stack to collect the water generated by the operation of the fuel cell. The water collection box integrates high and low liquid level alarms and drainage valve components, and a liquid-gas separation structure; and the stored water is stored and utilized through the whole vehicle control.

[0018] The present invention prevents tail water from being directly discharged onto the ground in winter, causing freezing and affecting safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the water retaining plate of the present invention;

[0021] Figure 3 It is a schematic diagram of the control method principle of the present invention.

[0022] In the figure: 1- tail water collection box body; 2- wave-breaking plate; 3- electric control drain valve; 4- water outlet of collection box; 5- tail water collection port; 6- exhaust port; 7- multi-stage liquid level sensor; 8- filling port; 9- water baffle; 10- vehicle water pump; 11- vehicle controller. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clear understanding of the present invention, but they do not constitute a limitation on the present invention.

[0024] Embodiment 1:

[0025] like Figure 1 , Figure 2 As shown, the present invention is a tail water collection box for a hydrogen fuel cell for a vehicle, comprising a tail water collection box body 1, on which a collection box outlet 4 and a tail water collection port 5 are integrated, a water baffle 9 is arranged in the tail water collection port 5, the bottom end of the water baffle 9 extends into the tail water collection box body 1, and the tail water collection port 5 is connected to the exhaust port 6. A wave-breaking plate 2 is arranged in the tail water collection box body 1. The wave-breaking plate 2 includes a plurality of partitions, and the plurality of partitions are cross-connected or arranged at intervals. A filling port 8 is arranged on the tail water collection box body 1. An electrically controlled drain valve 3 is arranged at the collection box outlet 4. A multi-stage liquid level sensor 7 is arranged in the tail water collection box body 1.

[0026] In some optional embodiments, the water outlet 4 of the collection box is connected to an external vehicle water pump 10 for transporting the water in the tail water collection box body 1 to a desired end.

[0027] like Figure 1 As shown, when the hydrogen fuel cell works normally, a certain water-gas mixture will be generated. When the water-gas mixture passes through the tail water collection port 5 and the water baffle 9, liquid-gas separation is achieved, and the liquid water enters the tail water collection box body 1 for storage and collection, and the gas is discharged through the exhaust port 6.

[0028] like Figure 1 As shown, the tail water drainage collecting box body 1 is integrated with a collecting box outlet 4, and the collecting box outlet 4 can be connected to an external vehicle water pump 10 to transport the water in the tail water drainage collecting box body 1 to the required end, such as car washing, brake cooling, vehicle radiator cooling, etc.

[0029] like Figure 1 As shown, a filling port 8 is provided on the tail water collection box body 1. When the multi-stage liquid level sensor 7 reports a low water level alarm signal and there is a demand for water at the required end, external water filling can be used to fill water through the filling port 8. The highest filling liquid level is below the high level alarm position of the multi-stage liquid level sensor 7.

[0030] like Figure 1 As shown, a wave-breaking plate 2 structure is added to the tail water collection box body 1. The specific structure of the wave-breaking plate 2 is not limited. It can ensure that during the driving process of the vehicle, the water in the wastewater collection box body 1 is as small as possible to prevent the violent fluctuation of the liquid level due to inertia, affecting the false alarm of the multi-stage liquid level sensor 7 and affecting the water delivery to the required end.

[0031] Embodiment 2:

[0032] like Figure 3 As shown, a control method for a tail water discharge collection box for a vehicle hydrogen fuel cell includes: water entering the tail water discharge collection box body 1 will be stored in the tail water discharge collection box body 1, and when the water level in the tail water discharge collection box body 1 does not reach the low liquid level alarm line of the multi-stage liquid level sensor 7, the multi-stage liquid level sensor 7 feeds back a low liquid level signal to the vehicle controller, and the vehicle controller controls the vehicle water pump 10 not to run. At this time, the vehicle controller controls the electronically controlled drain valve 3 to be in a closed state.

[0033] like Figure 3 As shown, when the upper limit of the water level in the tail drain collection box body 1 is between the high level and low level alarm lines of the multi-stage liquid level sensor 7, the multi-stage liquid level sensor 7 will feed back the water level signal to the vehicle controller. If there is a water demand at the required end, the vehicle controller will control the vehicle water pump 10 to operate, and the water pump suction port is connected to the collection box outlet 4. The water in the tail drain collection box body 1 is transported to the required end through the vehicle water pump 10. At this time, the vehicle controller will control the electronically controlled drain valve 3 to be in a closed state.

[0034] like Figure 3 As shown, when the upper limit of the water level in the tail drain collection box body 1 is above the high liquid level alarm line of the multi-stage liquid level sensor 7, the multi-stage liquid level sensor 7 will feed back the water level signal to the vehicle controller. If there is a water demand at the required end, the vehicle controller will control the vehicle water pump 10 to operate, and the water in the tail drain collection box body 1 is transported to the required end through the vehicle water pump 10. At this time, the vehicle controller will control the electronically controlled drain valve 3 to be in a closed state.

[0035] like Figure 3 As shown, when the upper limit of the water level in the tail water drainage collection box body 1 is above the high liquid level alarm line of the multi-stage liquid level sensor 7, the multi-stage liquid level sensor 7 will feed back the water level signal to the vehicle controller. If there is no water demand at the required end, the vehicle controller will control the vehicle water pump 10 not to run. At this time, the vehicle controller will control the electronically controlled drain valve 3 to be in the open state, and the water will be discharged to the outside of the vehicle through the electronically controlled drain valve 3.

[0036] When the water in the tail water collection box body 1 is discharged to the outside of the vehicle through the electric control drain valve 3, it is required to be discharged at a designated location when the ambient temperature is greater than 0°C or the ambient temperature is less than 0°C; avoid discharging the water directly to the ground to cause ice formation and pose a safety hazard.

[0037] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

Claims

1. A tail water collection box for a hydrogen fuel cell for a vehicle, comprising a tail water collection box body (1), characterized in that: The tailwater collection box body (1) is integrated with a collection box outlet (4) and a tailwater collection port (5); a water baffle (9) is arranged in the tailwater collection port (5); the bottom end of the water baffle (9) extends into the tailwater collection box body (1); the tailwater collection port (5) is connected to an exhaust port (6); an electrically controlled drain valve (3) is provided at the collection box outlet (4); the collection box outlet (4) is connected to an external vehicle water pump (10) for transporting water in the tailwater collection box body (1) to a desired end; and a multi-stage liquid level sensor (7) is provided in the tailwater collection box body (1).

2. The tail water collection box of a hydrogen fuel cell for a vehicle according to claim 1, characterized in that: A wave-breaking plate (2) is provided inside the tailwater collection box body (1).

3. A tail water collection box for a hydrogen fuel cell for a vehicle according to claim 2, characterized in that: The wave-breaking plate (2) comprises a plurality of partitions, and the plurality of partitions are cross-connected or arranged at intervals.

4. The tail water collection box of a hydrogen fuel cell for a vehicle according to claim 1, characterized in that: The tail water collection box body (1) is provided with a filling port (8).

5. The control method of a tail water collection box of a vehicle hydrogen fuel cell according to claim 1, characterized in that: include When the water level in the tail discharge collection box body (1) does not reach the low liquid level alarm line of the multi-stage liquid level sensor (7), the multi-stage liquid level sensor (7) feeds back a low liquid level signal to the vehicle controller (11), and the vehicle controller (11) controls the vehicle water pump (10) to stop running and controls the electronically controlled drain valve (3) to be in a closed state; When the upper limit of the water level in the tail drain collection box body (1) is between the high level and low level alarm lines of the multi-level level sensor (7), the multi-level level sensor (7) feeds back the water level signal to the vehicle controller (11). If the required end has a water demand, the vehicle controller (11) controls the vehicle water pump (10) to operate, the water pump suction port is connected to the collection box outlet (4), the water in the tail drain collection box body (1) is transported to the required end through the vehicle water pump (10), and the vehicle controller (11) controls the electric control drain valve (3) to be in a closed state.

6. The control method of a tail water collection box of a vehicle hydrogen fuel cell according to claim 5, characterized in that: Also includes: When the upper limit of the water level in the tailwater collection box body (1) is above the high liquid level alarm line of the multi-stage liquid level sensor (7), the multi-stage liquid level sensor (7) feeds back the water level signal to the vehicle controller (11); if the required end has a water demand, the vehicle controller (11) controls the vehicle water pump (10) to operate, and the water in the tailwater collection box body (1) is transported to the required end through the vehicle water pump (10); the vehicle controller (11) controls the electric-controlled drain valve (3) to be in a closed state; When the upper limit of the water level in the tail water collection box body (1) is above the high liquid level alarm line of the multi-stage liquid level sensor (7), the multi-stage liquid level sensor (7) feeds back a water level signal to the vehicle controller (11); if there is no water demand at the required end, the vehicle controller (11) controls the vehicle water pump (10) not to operate, controls the electronically controlled drainage valve (3) to be in an open state, and the water is discharged to the outside of the vehicle through the electronically controlled drainage valve (3).

7. The control method of a tail water collection box of a vehicle hydrogen fuel cell according to claim 5, characterized in that: When the water in the tail water collection box body (1) is discharged to the outside of the vehicle through the electric control water drain valve (3), the ambient temperature must be greater than 0°C or less than 0°C.

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