Gas-water separator, fuel cell engine and vehicle

Abstract

The utility model provides a gas-water separator, a fuel cell engine and a vehicle, the gas-water separator comprises: a separator main body, the separator main body comprises an accommodating cavity and a fluid channel arranged in the accommodating cavity; the air outlet is formed in the upper side of the separator main body and is communicated with the fluid channel; the liquid outlet is formed in the lower side of the separator main body and is communicated with the fluid channel; the plurality of gas inlets are formed in the separator main body at intervals, are positioned between the gas outlet and the liquid outlet, are communicated with the fluid channel, and are used for being connected with a plurality of hydrogen outlets of an electric pile in a one-to-one correspondence manner; the problem that in the prior art, a gas-water separator cannot be matched with a high-power fuel cell engine of a multi-stack structure is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fuel cell engine technical field, specifically, relate to a gas water separator, fuel cell engine and vehicle. BACKGROUND

[0002] The gas water separator is one of important components in the hydrogen subsystem of the fuel cell engine, which is arranged between the hydrogen outlet of the stack and the hydrogen circulation device, for separating the liquid water and hydrogen in the secondary flow, so as to avoid the adverse effects of the liquid water on the performance, efficiency and durability of the fuel cell engine.

[0003] However, only one gas inlet is arranged on the gas water separator in the prior art, so that the gas water separator cannot be adapted to the high-power fuel cell engine with multiple stack configurations. SUMMARY

[0004] The main purpose of the utility model is to provide a gas water separator, fuel cell engine and vehicle, to solve the problem that the gas water separator in the prior art cannot be adapted to the high-power fuel cell engine with multiple stack configurations.

[0005] In order to achieve the above purpose, according to one aspect of the utility model, a gas water separator is provided, which comprises: a separator main body, the separator main body comprising a containing cavity and a fluid passage arranged in the containing cavity; a gas outlet, the gas outlet being arranged on the upper side of the separator main body and communicating with the fluid passage; a liquid outlet, the liquid outlet being arranged on the lower side of the separator main body and communicating with the fluid passage; a plurality of gas inlets, the plurality of gas inlets being arranged on the separator main body in a spaced manner and located between the gas outlet and the liquid outlet, the plurality of gas inlets all communicating with the fluid passage, and the plurality of gas inlets being used for connecting with a plurality of hydrogen outlets of the stack one by one.

[0006] Further, the gas water separator comprises: a waste gas discharge outlet, the waste gas discharge outlet being arranged on the separator main body and communicating with the fluid passage, and the waste gas discharge outlet being located between the plurality of gas inlets and the gas outlet; a waste gas discharge valve, the waste gas discharge valve being arranged at the waste gas discharge outlet to control the opening and closing of the waste gas discharge outlet.

[0007] Further, the gas water separator comprises a water storage component, which is installed on the lower side of the separator main body; the water storage component comprises a water storage cavity and a water storage inlet and a water storage outlet communicating with the water storage cavity, and the water storage inlet communicates with the liquid outlet.

[0008] Further, at least part of the water storage cavity gradually decreases in cross-sectional area along the direction away from the separator main body, the water storage inlet is located on the upper side of the water storage cavity, and the water storage outlet is located on the lower side of the water storage cavity; and / or the water storage component comprises a water storage sealing ring clamped between the water storage component and the separator main body; and / or the water storage component comprises a drain valve arranged at the water storage outlet.

[0009] Further, the separator body comprises two first side plates which are spaced apart along the first horizontal direction, and the separator body further comprises a plurality of baffle plates which are spaced apart from top to bottom in the accommodating cavity to form the fluid passage; in any two adjacent baffle plates, one baffle plate is connected with a first one of the two first side plates and is spaced apart from a second one of the two first side plates, and the other baffle plate is connected with the second one of the two first side plates and is spaced apart from the first one of the two first side plates.

[0010] Further, the plurality of baffle plates comprises one short baffle plate and a plurality of long baffle plates, wherein the short baffle plate is located above the plurality of long baffle plates and is spaced apart from the plurality of long baffle plates, the short baffle plate is inclined to the horizontal plane, one end of the short baffle plate is connected with the upper end of the first one of the two first side plates, and the other end of the short baffle plate is arranged towards the adjacent long baffle plate; each long baffle plate comprises a first plate body and a second plate body which are connected, the first plate body is connected with one of the two first side plates, the second plate body is spaced apart from the other one of the two first side plates, the second plate body extends towards the lower side of the first plate body, the thickness of at least part of the first plate body gradually decreases along the direction close to the second plate body, the thickness of the second plate body remains unchanged, and the minimum thickness of the first plate body is greater than or equal to the thickness of the second plate body.

[0011] Further, the upper surface of the first plate body is parallel to the horizontal plane; and / or the first included angle between the upper surface of the first plate body and the upper surface of the second plate body is greater than the second included angle between the lower surface of the first plate body and the lower surface of the second plate body, and the first included angle and the second included angle are both obtuse angles; and / or the first plate body is provided with a weight-reducing hole.

[0012] Further, the number of liquid outlets is a plurality, the plurality of liquid outlets are spaced apart at the bottom of the separator body, and each liquid outlet is a strip-shaped through hole; and / or the cross-sectional area of at least part of the accommodating cavity gradually decreases from top to bottom; and / or the gas-water separator comprises a pressure sensor, the pressure sensor is arranged on the separator body, and a detection probe of the pressure sensor is arranged towards the plurality of air inlets; and / or the separator body comprises a first shell and a second shell which are oppositely arranged and connected with each other to jointly enclose the accommodating cavity, and the separator body further comprises a shell sealing ring which is clamped in the first shell and the second shell.

[0013] According to the second aspect of the present application, a fuel cell engine is provided, comprising the above-mentioned gas-water separator.

[0014] According to the third aspect of the present application, a vehicle is provided, comprising the above-mentioned fuel cell engine.

[0015] The utility model discloses a technical scheme, the utility model discloses a gas -water separator, comprising: separator main part, separator main part includes containing chamber and the fluid channel of setting in containing chamber, gas outlet, gas outlet sets up in the upside of separator main part and with fluid channel intercommunication, liquid outlet, liquid outlet sets up in the downside of separator main part and with fluid channel intercommunication, a plurality of gas inlets, a plurality of gas inlets interval setting are on separator main part and are located between gas outlet and liquid outlet, a plurality of gas inlets all with fluid channel intercommunication, a plurality of gas inlets are used with the hydrogen gas export of electric pile one -to -one correspondingly connect, like this, the utility model discloses a gas -water separator through setting up a plurality of gas inlets for with the hydrogen gas export of electric pile one -to -one correspondingly connect, reduced the process of using the air intake manifold / distribution head to do the transition connection, reduced the quantity of parts for use when connecting, reduced the risk and dismounting difficulty of sealing leakage, be favorable to realize the high demand of high -power fuel cell engine to gas flow, solved the problem that the gas -water separator of prior art can not be adapted to the high -power fuel cell engine of multiple electric pile configuration. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings accompanying the specification of this application form a part thereof, serve to provide further understanding of the present application, and together with the description of the exemplary embodiments of the present application, serve to explain the present application. In the drawings:

[0017] Figure 1 A structure schematic view of an embodiment of the gas -water separator according to the utility model is shown;

[0018] Figure 2 A structure schematic view of the first shell of the gas -water separator shown is shown; Figure 1 An explosion view of the gas -water separator shown is shown;

[0019] Figure 3 A structure schematic view of the first shell of the gas -water separator shown is shown; Figure 1 A structure schematic view of the first shell of the gas -water separator shown is shown;

[0020] Figure 4 A structure schematic view of the first shell of the gas -water separator shown is shown; Figure 3 A front view of the first shell shown is shown.

[0021] Among them, the above drawing includes the following sign:

[0022] 1, separator main part, 101, first shell, 102, second shell, 103, shell sealing ring, 11, containing chamber, 12, fluid channel, 13, baffle, 14, first side plate, 15, short baffle, 16, long baffle, 161, first plate body, 162, second plate body, 163, weight reduction hole,

[0023] 2, gas inlet,

[0024] 3, gas outlet,

[0025] 4. Liquid outlet;

[0026] 5. Water storage components; 51. Water storage cavity; 52. Water storage sealing ring;

[0027] 6. Drain valve;

[0028] 7. Pressure sensor;

[0029] 8. Exhaust gas outlet;

[0030] 9. Exhaust gas discharge valve;

[0031] 10. Sensor mounting holes. Detailed Implementation

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] like Figures 1 to 4 As shown, this utility model provides a gas-liquid separator, comprising: a separator body 1, the separator body 1 including a receiving cavity 11 and a fluid channel 12 disposed within the receiving cavity 11; a gas outlet 3, the gas outlet 3 being disposed on the upper side of the separator body 1 and communicating with the fluid channel 12; a liquid outlet 4, the liquid outlet 4 being disposed on the lower side of the separator body 1 and communicating with the fluid channel 12; and a plurality of gas inlets 2, the plurality of gas inlets 2 being spaced apart on the separator body 1 and located between the gas outlet 3 and the liquid outlet 4, the plurality of gas inlets 2 being communicating with the fluid channel 12, and the plurality of gas inlets 2 being used to connect one-to-one with a plurality of hydrogen outlets of the fuel cell stack.

[0034] In this way, the gas-water separator of this utility model reduces the process of using an intake manifold / distributor for transitional connection by setting multiple air inlets 2 for one-to-one connection with multiple hydrogen outlets of the fuel cell stack. This reduces the number of parts used in the connection, lowers the risk of sealing leakage and the difficulty of disassembly and assembly, and is conducive to meeting the high gas flow requirements of high-power fuel cell engines. It solves the problem that the gas-water separator in the prior art cannot be adapted to high-power fuel cell engines with multiple fuel cell stack configurations.

[0035] The outlet 3 of the gas-water separator of this invention can be connected to the secondary inlet of components such as the hydrogen pump and ejector of a fuel cell engine, so as to facilitate the recovery and reuse of the separated gas.

[0036] When the gas-water separator of this utility model is installed in a fuel cell engine including upper and lower stacks, and each stack includes a hydrogen outlet, the gas-water separator also includes two air inlets 2, which are respectively set to correspond to the two hydrogen outlets.

[0037] Specifically, the gas outlet 3 and each gas inlet 2 are quick connectors, so as to facilitate disassembly and greatly improve the disassembly efficiency of the gas-water separator.

[0038] As shown in Figure 1 and Figure 2 , the gas-water separator comprises: a waste gas discharge outlet 8 provided on the separator body 1 and communicating with the fluid channel 12, the waste gas discharge outlet 8 being located between the plurality of gas inlets 2 and the gas outlet 3; and a waste gas discharge valve 9 provided at the waste gas discharge outlet 8 to control the opening and closing of the waste gas discharge outlet 8.

[0039] The waste gas discharge outlet 8 of the gas-water separator of the utility model is used for discharging waste gas generated in the reaction, and the diameter of the waste gas discharge outlet 8 is much smaller than that of the gas outlet 3, so as to facilitate the control of the discharge time and discharge speed of the waste gas discharged by the waste gas discharge valve 9 from the waste gas discharge outlet 8, avoid the waste gas discharge outlet 8 from discharging useful gas, and also avoid the flow and pressure of the fluid in the separator body 1 from being unstable due to the discharge of too much gas.

[0040] Specifically, the diameter of the gas outlet 3 is greater than or equal to 20 mm, and the diameter of the waste gas discharge outlet 8 is less than or equal to 2 mm.

[0041] Since the flow area of the waste gas discharge outlet 8 and the waste gas discharge valve 9 is relatively small, if there is liquid water at the time of cold start, it is easy to freeze, thereby causing failure, therefore, the waste gas discharge valve 9 of the application is vertically arranged at the waste gas discharge outlet 8, so as to have strong anti-icing ability.

[0042] As shown in Figure 1 and Figure 2 , the gas-water separator comprises a water storage component 5 installed on the lower side of the separator body 1; the water storage component 5 comprises a water storage cavity 51 and a water storage inlet and a water storage outlet communicating with the water storage cavity 51, and the water storage inlet communicates with the liquid outlet 4.

[0043] As shown in Figure 1 and Figure 2 , at least part of the cross-sectional area of the water storage cavity 51 gradually decreases in the direction away from the separator body 1, the water storage inlet is located on the upper side of the water storage cavity 51, and the water storage outlet is located on the lower side of the water storage cavity 51; and / or the water storage component 5 comprises a water storage sealing ring 52 clamped between the water storage component 5 and the separator body 1; and / or the water storage component 5 comprises a drain valve 6 provided at the water storage outlet. In this way, it is beneficial to completely discharge the liquid water under unstable working conditions.

[0044] As shown in Figure 3 and Figure 4As shown in the figures, the separator body 1 comprises two first side plates 14 arranged in a first horizontal direction, and a plurality of baffles 13 arranged in the accommodating cavity 11 in a top-down manner to form the fluid passage 12; in any two adjacent baffles 13, one baffle 13 is connected with a first one of the two first side plates 14 and is arranged in a spaced manner with a second one of the two first side plates 14, and the other baffle 13 is connected with the second one of the two first side plates 14 and is arranged in a spaced manner with the first one of the two first side plates 14.

[0045] In this way, the separation efficiency is improved while keeping the pressure drop small, and the method is particularly suitable for high-power (300 kW level) fuel cell engines.

[0046] As shown in the figures, Figure 3 and Figure 4 The plurality of baffles 13 comprises one short baffle 15 and a plurality of long baffles 16, wherein the short baffle 15 is arranged above the plurality of long baffles 16 in a spaced manner, the short baffle 15 is arranged in an inclined manner to the horizontal plane, one end of the short baffle 15 is connected with the upper end of a first one of the two first side plates 14, and the other end of the short baffle 15 is arranged towards an adjacent long baffle 16; each long baffle 16 comprises a first plate body 161 and a second plate body 162 connected with each other, the first plate body 161 is connected with a first one of the two first side plates 14, and the second plate body 162 is arranged in a spaced manner with a second one of the two first side plates 14, the second plate body 162 extends towards the lower side of the first plate body 161, the thickness of at least part of the first plate body 161 gradually decreases in a direction close to the second plate body 162, the thickness of the second plate body 162 remains unchanged, and the minimum thickness of the first plate body 161 is greater than or equal to the thickness of the second plate body 162.

[0047] As shown in the figures, Figure 3 and Figure 4 The upper surface of the first plate body 161 is parallel to the horizontal plane; and / or the first included angle between the upper surface of the first plate body 161 and the upper surface of the second plate body 162 is greater than the second included angle between the lower surface of the first plate body 161 and the lower surface of the second plate body 162, and both the first included angle and the second included angle are obtuse angles; and / or the first plate body 161 is provided with a weight-reducing hole 163.

[0048] In this way, the liquid water falling from the upper baffle 13 can be prevented from accumulating at the connection between the first plate body 161 and the second plate body 162 of the lower baffle 13.

[0049] In the prior art, in order to avoid water accumulation on the baffle 13, a slit or a water hole is often arranged on the baffle 13, but this will cause a small amount of mixed gas to directly pass through the slit to the air outlet 3 without being separated during the separation process, thereby reducing the separation efficiency of the gas-water separator, and the long baffle 16 of the utility model can solve this problem by arranging the first plate body 161 and the second plate body 162.

[0050] As shown in Figure 3 , the number of liquid outlets 4 is multiple, and the multiple liquid outlets 4 are arranged at intervals at the bottom of the separator main body 1, and each liquid outlet 4 is a strip-shaped through hole, which can reduce the impact of airflow on the liquid water in the water storage component 5 and avoid the liquid water in the water storage component 5 from splashing to the air outlet 3 as much as possible.

[0051] As shown in Figure 3 and Figure 4 , at least part of the cross-sectional area of the containing cavity 11 decreases from top to bottom, which is beneficial to the upward movement of the gas.

[0052] As shown in Figures 1 to 3 , the gas-water separator comprises a pressure sensor 7, the pressure sensor 7 is arranged on the separator main body 1, and the detection probe of the pressure sensor 7 is arranged towards the multiple air inlets 2; wherein the separator main body 1 is provided with a sensor mounting hole 10 for mounting the pressure sensor 7, and the sensor mounting hole 10 is arranged opposite to the multiple air inlets 2.

[0053] Specifically, the pressure sensor 7 is arranged horizontally at the sensor mounting hole 10, so that water is not easy to accumulate, so as to ensure high anti-icing ability, and the pressure loss of the separator main body 1 can also be avoided, so that the pressure of the gas at the air inlet 2 can be measured more accurately.

[0054] As shown in Figure 2 , the separator main body 1 comprises a first shell 101 and a second shell 102 arranged opposite to each other and connected to each other, so as to jointly form the containing cavity 11, and the separator main body 1 further comprises a shell sealing ring 103 clamped in the first shell 101 and the second shell 102, so as to ensure the sealing between the first shell 101 and the second shell 102.

[0055] The utility model provides a kind of fuel cell engine, comprising above-mentioned gas-water separator.

[0056] Specifically, the fuel cell engine of the utility model comprises a high-power double-stack fuel cell engine.

[0057] The utility model further provides a kind of vehicle, comprising above-mentioned fuel cell engine.

[0058] From the above description, it can be seen that the above-mentioned embodiments of the utility model realize the following technical effects:

[0059] The gas-water separator of the utility model comprises: a separator main body 1, the separator main body 1 includes a containing cavity 11 and a fluid passage 12 arranged in the containing cavity 11, a gas outlet 3, the gas outlet 3 is arranged on the upside of the separator main body 1 and is communicated with the fluid passage 12, a liquid outlet 4, the liquid outlet 4 is arranged on the downside of the separator main body 1 and is communicated with the fluid passage 12, a plurality of air inlets 2, the plurality of air inlets 2 are arranged on the separator main body 1 at intervals and are located between the gas outlet 3 and the liquid outlet 4, the plurality of air inlets 2 are all communicated with the fluid passage 12, and the plurality of air inlets 2 are used to be connected with a plurality of hydrogen outlets of the electric pile one by one correspondingly.In this way, the gas-water separator of the utility model is connected with the plurality of hydrogen outlets of the electric pile one by one correspondingly through the plurality of air inlets 2 arranged for the purpose, reduces the process of using the air intake manifold / distribution head to make transition connection, reduces the number of parts used when connecting, reduces the risk of sealing leakage and dismounting difficulty, is favorable for realizing the high requirement of the high-power fuel cell engine on gas flow, and solves the problem that the gas-water separator in the prior art cannot be adapted to the high-power fuel cell engine of the multiple electric pile configuration.

[0060] It is to be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments consistent with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0061] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the present application, unless otherwise specifically stated. It will be further understood that the dimensions of the various parts shown in the drawings are not true to scale, for the convenience of description. The techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the authorized specification, if appropriate. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of the example embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0062] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship are generally based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, without the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the protection scope of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0063] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used herein to describe the spatial positional relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0064] In addition, it should be noted that the use of "first", "second" and the like to define parts only facilitates the differentiation of the corresponding parts, and the above words have no special meaning unless otherwise stated, and therefore cannot be understood as a limitation on the protection scope of the present application.

[0065] The above only describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A water-air separator, characterized in that, The gas-water separator comprises: a separator body (1) comprising a containing cavity (11) and a fluid passage (12) arranged in the containing cavity (11); an air outlet (3) arranged on an upper side of the separator body (1) and in communication with the fluid passage (12); a liquid outlet (4) arranged on a lower side of the separator body (1) and in communication with the fluid passage (12); a plurality of air inlets (2) arranged on the separator body (1) and located between the air outlet (3) and the liquid outlet (4), each of the air inlets (2) being in communication with the fluid passage (12), and each of the air inlets (2) being used to be connected with a hydrogen gas outlet of a fuel cell stack.

2. The gas-water separator of claim 1, wherein, The gas-water separator comprises: a waste gas discharge outlet (8) arranged on the separator body (1) and in communication with the fluid passage (12), the waste gas discharge outlet (8) being located between the plurality of air inlets (2) and the air outlet (3); a waste gas discharge valve (9) arranged at the waste gas discharge outlet (8) to control opening and closing of the waste gas discharge outlet (8).

3. The gas-water separator of claim 1, wherein, The gas-water separator comprises a water storage component (5) mounted on the lower side of the separator body (1); the water storage component (5) comprises a water storage cavity (51) and a water storage inlet and a water storage outlet in communication with the water storage cavity (51), and the water storage inlet is in communication with the liquid outlet (4).

4. The gas-water separator according to claim 3, wherein at least part of the water storage cavity (51) gradually decreases in cross-sectional area in a direction away from the separator body (1), the water storage inlet is located on an upper side of the water storage cavity (51), and the water storage outlet is located on a lower side of the water storage cavity (51); and / or the water storage component (5) comprises a water storage sealing ring (52) clamped between the water storage component (5) and the separator body (1); and / or the water storage component (5) comprises a drain valve (6) arranged at the water storage outlet.

5. The gas-water separator of claim 1, wherein, The separator body (1) comprises two first side plates (14) arranged in a first horizontal direction, and further comprises a plurality of baffle plates (13) arranged in the containing cavity (11) from top to bottom to form the fluid passage (12); in any two adjacent baffle plates (13), one of the baffle plates (13) is connected with a first one of the two first side plates (14) and is arranged in a spaced manner with a second one of the two first side plates (14), and the other of the baffle plates (13) is connected with the second one of the two first side plates (14) and is arranged in a spaced manner with the first one of the two first side plates (14).

6. The gas-water separator of claim 5, wherein, The plurality of baffle plates (13) comprises one short baffle plate (15) and a plurality of long baffle plates (16), wherein The short baffle (15) is arranged above and spaced from the plurality of long baffles (16), and is arranged obliquely to the horizontal plane, one end of the short baffle (15) is connected to the upper end of the first one of the two first side plates (14), and the other end of the short baffle (15) is arranged towards the adjacent long baffle (16); Each of the long baffles (16) comprises a first plate body (161) and a second plate body (162) connected together, the first plate body (161) is connected to one of the two first side plates (14), and the second plate body (162) is arranged spaced from the other of the two first side plates (14), the second plate body (162) extends downwards towards the first plate body (161), the thickness of at least part of the first plate body (161) gradually decreases in the direction close to the second plate body (162), the thickness of the second plate body (162) remains unchanged, and the minimum thickness of the first plate body (161) is greater than or equal to the thickness of the second plate body (162).

7. The gas-water separator according to claim 6, wherein the upper surface of the first plate body (161) is parallel to the horizontal plane; and / or the first included angle between the upper surface of the first plate body (161) and the upper surface of the second plate body (162) is greater than the second included angle between the lower surface of the first plate body (161) and the lower surface of the second plate body (162), and both the first included angle and the second included angle are obtuse; and / or the first plate body (161) is provided with a weight-reducing hole (163).

8. The gas-water separator according to any one of claims 1 to 7, wherein the number of the liquid outlets (4) is multiple, and the multiple liquid outlets (4) are arranged spaced on the bottom of the separator body (1), and each of the liquid outlets (4) is a strip-shaped through hole; and / or the cross-sectional area of at least part of the containing cavity (11) gradually decreases from top to bottom; and / or the gas-water separator comprises a pressure sensor (7) arranged in the separator body (1), and the detection probe of the pressure sensor (7) is arranged towards the multiple air inlets (2); and / or the separator body (1) comprises a first shell (101) and a second shell (102) arranged oppositely and connected to each other to jointly form the containing cavity (11), and the separator body (1) further comprises a shell sealing ring (103) clamped in the first shell (101) and the second shell (102).

9. A fuel cell engine characterized by comprising: The gas-water separator according to any one of claims 1 to 8.

10. A vehicle characterized by comprising: The fuel cell engine according to claim 9.

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