Fuel-electric vehicle voltage-stabilizing transmission assembly, fuel cell and method

Abstract

The present invention relates to the field of fuel cell technology, and provides a fuel-electric vehicle voltage-stabilizing transmission component, a fuel cell, and a method, wherein the component includes a voltage-stabilizing body and a voltage-stabilizing component; the voltage-stabilizing body is configured with a voltage-stabilizing cavity; the voltage-stabilizing component includes a fixed part, a movable part, and a driving part, the fixed part is arranged on the voltage-stabilizing body to separate the voltage-stabilizing cavity into an air inlet cavity and an air outlet cavity, the fixed part is provided with a plurality of first air vents; the movable part is slidably connected to the voltage-stabilizing body, the movable part is provided with a plurality of second air vents; the driving part is connected to the movable part. The present invention arranges a voltage-stabilizing body between a supply system and a fuel cell system, arranges a fixed part and a movable part in the voltage-stabilizing body, drives the movable part to move by the driving part, adjusts the overlapping area of ​​the first air vent and the second air vent, thereby adjusting the hydrogen supply pressure and flow, and then stabilizes the hydrogen supply pressure and flow when the power of the fuel cell system fluctuates, thereby solving the defect that the existing fuel cell system is prone to parking due to power fluctuations.

Description

Technical Field

[0001] The present invention relates to the field of fuel cell technology, and in particular to a fuel cell and a method for stabilizing and transmitting a voltage of a fuel-electric vehicle. Background Art

[0002] At present, low-carbon development in the automotive industry has become one of the important directions for achieving low-carbon development in the transportation sector. In the automotive field, carbon emissions mainly come from the combustion process of fuel energy. In order to reduce the adverse impact on the environment and respond to climate change, hydrogen energy is considered to be one of the best choices to replace fuel energy due to its clean, pollution-free, high energy density and other characteristics. Hydrogen fuel cell vehicles can achieve zero-emission, low-noise driving, and only produce water vapor during use, which is environmentally friendly. Therefore, fuel cell engines have ignited a new direction for the future development of the automotive industry due to their high efficiency, energy saving, and zero emissions.

[0003] In the prior art, the hydrogen system of a fuel cell vehicle is connected to the hydrogen inlet of the fuel cell system through a pipeline after the pressure reducing valve; however, when the power of the fuel cell system fluctuates, the vehicle may easily stop. Summary of the invention

[0004] The present invention provides a fuel-electric vehicle voltage-stabilizing transmission component, a fuel cell and a method, which are used to solve the defect in the prior art that power fluctuation of the fuel cell system easily causes parking.

[0005] The present invention provides a fuel-electric vehicle voltage stabilizing transmission component, comprising:

[0006] A voltage stabilizing body, wherein the voltage stabilizing body is configured with a voltage stabilizing cavity, wherein the voltage stabilizing cavity has an air inlet and an air outlet, wherein the air inlet is used to connect to a supply system, and the air outlet is used to connect to a fuel cell system;

[0007] A voltage stabilizing component includes a fixed part, a movable part and a driving part, wherein the fixed part is arranged on the voltage stabilizing body to separate the voltage stabilizing cavity into an air inlet cavity and an air outlet cavity, the air inlet cavity is communicated with the air inlet, and the air outlet cavity is communicated with the air outlet, and the fixed part is provided with a plurality of first air vents; the movable part is slidably connected to the voltage stabilizing body, and the movable part is provided with a plurality of second air vents; the driving part is connected to the movable part, and the driving part drives the movable part to move to adjust the overlapping area between the first air vents and the second air vents.

[0008] According to a fuel-electric vehicle voltage stabilizing and conveying assembly provided by the present invention, the fixing member comprises a first cylindrical body, an end of the first cylindrical body close to the air inlet has a first opening, and the first vent hole is provided on a side wall of the first cylindrical body;

[0009] The moving member comprises a second cylindrical body sleeved on the first cylindrical body, the second cylindrical body has a second opening at one end close to the air inlet, and the second vent hole is formed on a side wall of the second cylindrical body.

[0010] According to a fuel-electric vehicle voltage stabilizing and conveying assembly provided by the present invention, a plurality of first hole groups are opened in the axial direction on the side wall of the first cylindrical body, and the first hole group includes a plurality of first ventilation holes arranged in the circumferential direction;

[0011] A plurality of second hole groups are formed on the side wall of the second cylindrical body in the axial direction. The second hole groups include a plurality of second ventilation holes arranged in the circumferential direction. The first ventilation holes are matched with the second ventilation holes.

[0012] According to a fuel-electric vehicle voltage stabilizing transmission assembly provided by the present invention, the number of the first hole groups is equal to the number of the second hole groups, and / or,

[0013] The plurality of first hole groups are arranged at a first equal interval in the axial direction, and the plurality of second hole groups are arranged at a second equal interval in the axial direction, and the first equal interval is equal to the second equal interval.

[0014] According to a fuel-electric vehicle voltage-stabilizing and conveying assembly provided by the present invention, the second cylindrical body is close to the air inlet, and the distance between the bottom plate of the second cylindrical body and the air inlet gradually increases from the middle to the outside.

[0015] A fuel-electric vehicle pressure stabilizing and transmission assembly provided according to the present invention further includes a pressure measuring element, and the pressure measuring element is arranged on a side of the pressure stabilizing cavity close to the air outlet.

[0016] A fuel-electric vehicle pressure stabilizing and transmission component provided according to the present invention also includes a control mechanism, which is connected to the pressure measuring element and the driving component. The control mechanism is used to obtain a pressure measurement value detected by the pressure measuring element, and send a control instruction to the driving component based on the pressure measurement value to adjust the overlapping area of ​​the first vent and the second vent.

[0017] According to a fuel-electric vehicle pressure-stabilizing and delivery assembly provided by the present invention, the air inlet is provided with a one-way valve.

[0018] The present invention also provides a fuel cell, comprising a supply system, a fuel cell system and a fuel-electric vehicle voltage-stabilizing and transmission assembly as described above, wherein the air inlet is connected to the supply system, and the air outlet is connected to the fuel cell system.

[0019] The present invention further provides a fuel cell control method, based on any one of the fuel-electric vehicle voltage stabilizing and transmission components described above, the method comprising:

[0020] Determining a control instruction based on the pressure and / or pressure fluctuations of the pressure stabilizing chamber;

[0021] Based on the control instruction, the driving member drives the moving member to move so as to adjust the overlapping area of ​​the first vent hole and the second vent hole.

[0022] The fuel-electric vehicle voltage-stabilizing and transmission assembly and fuel cell provided by the present invention arrange a voltage-stabilizing body between a supply system and a fuel cell system, arrange a fixed part and a movable part in the voltage-stabilizing body, and drive the movable part to move closer to or away from the fixed part by a driving part, thereby adjusting the overlapping area of ​​the first vent hole and the second vent hole, thereby adjusting the hydrogen supply pressure and flow rate, and then stabilizing the hydrogen supply pressure and flow rate when the power of the fuel cell system fluctuates, thereby avoiding the vehicle stopping due to a reduction in vehicle power or shutdown of the fuel cell system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a structural schematic diagram of the voltage stabilizing and transmission assembly of a fuel-electric vehicle provided by the present invention.

[0025] Figure 2 It is a schematic diagram of the structure of the fuel cell provided by the present invention.

[0026] Figure 3 It is a flow chart of the control method of the fuel cell provided by the present invention.

[0027] Reference numerals:

[0028] 100. fuel-electric vehicle voltage-stabilizing and conveying assembly; 110. voltage-stabilizing body; 111. air inlet; 112. air outlet; 113. air inlet cavity; 114. air outlet cavity; 121. fixing member; 1211. first air vent; 122. moving member; 1221. second air vent; 123. driving member; 130. pressure measuring element; 140. one-way valve;

[0029] 200. Supply system;

[0030] 300. Fuel cell system. DETAILED DESCRIPTION

[0031] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0032] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0033] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0034] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0036] Combine the following Figure 1-Figure 2 The invention describes a fuel-electric vehicle voltage stabilizing and transmission assembly.

[0037] The embodiment of the present invention provides a fuel-electric vehicle voltage stabilizing transmission component, such as Figure 1 and Figure 2 As shown, the fuel-electric vehicle voltage stabilizing and transmission assembly includes a voltage stabilizing body 110 and a voltage stabilizing component arranged on the voltage stabilizing body 110 .

[0038] The pressure stabilizing body 110 is configured with a pressure stabilizing cavity, the pressure stabilizing cavity having an air inlet 111 and an air outlet 112, the air inlet 111 is used to connect to the supply system 200, and the air outlet 112 is used to connect to the fuel cell system 300; the pressure stabilizing component includes a fixing member 121, a moving member 122 and a driving member 123, the fixing member 121 is arranged on the pressure stabilizing body 110, so as to separate the pressure stabilizing cavity into an air inlet cavity 113 and an air outlet cavity 114, the air inlet cavity 113 The fixed member 121 is connected to the air inlet 111, the air outlet cavity 114 is connected to the air outlet 112, and a plurality of first air holes 1211 are provided. The movable member 122 is slidably connected to the voltage stabilizing body 110, and a plurality of second air holes 1221 are provided in the movable member 122. The driving member 123 is connected to the movable member 122, and the driving member 123 drives the movable member 122 to move so as to adjust the overlapping area between the first air holes 1211 and the second air holes 1221.

[0039] It can be understood that this embodiment adds a fuel-electric vehicle pressure-stabilizing and delivery component 100 between the supply system 200 and the fuel cell system 300, and adjusts the supply pressure of the gas supplied by the supply system 200 to the fuel cell system 300 through the fuel-electric vehicle pressure-stabilizing and delivery component 100 to stabilize the supply pressure of the supply system 200, thereby ensuring instantaneous pressure and flow.

[0040] Specifically, the fuel-electric vehicle voltage-stabilizing and transmission component includes a voltage-stabilizing body 110 arranged between the supply system 200 and the fuel cell system 300. A fixed part 121 and a movable part 122 are arranged in the voltage-stabilizing body 110. The movable part 122 is driven by a driving part 123 to move closer to or away from the fixed part 121 to adjust the overlapping area between the first air hole 1211 and the second air hole 1221, thereby adjusting the hydrogen supply pressure and flow, and then stabilizing the hydrogen supply pressure and flow when the power of the fuel cell system 300 fluctuates.

[0041] It should be noted that the supply system 200 may be a hydrogen system, and the supply system 200 supplies hydrogen to the fuel cell system 300 through the fuel-electric vehicle voltage-stabilizing and delivery assembly 100. The overlapping area of ​​the first vent 1211 and the second vent 1221 can represent the intake amount of hydrogen supplied to the fuel cell system 300, such as when the overlapping area of ​​the first vent 1211 and the second vent 1221 is the largest, the intake amount is the maximum output; when the overlapping area of ​​the first vent 1211 and the second vent 1221 is the smallest, the intake amount is the minimum output, so that the overlapping area of ​​the first vent 1211 and the second vent 1221 can be adjusted by driving the moving member 122 to move, and then the intake amount can be adjusted to match the power fluctuation of the fuel cell system 300. It should be noted here that the minimum overlapping area between the first vent 1211 and the second vent 1221 can be zero, so that after the fuel cell system 300 is shut down, the driving member 123 drives the moving member 122 to move, so that the first vent 1211 and the second vent 1221 are misaligned. At this time, the overlapping area between the first vent 1211 and the second vent 1221 is zero, so that the first vent 1211 and the second vent 1221 are completely covered.

[0042] The fuel-electric vehicle voltage-stabilizing and delivery assembly provided in the embodiment of the present invention arranges a voltage-stabilizing body 110 between the supply system 200 and the fuel cell system 300, arranges a fixed part 121 and a movable part 122 in the voltage-stabilizing body 110, and drives the movable part 122 to move closer to or away from the fixed part 121 through a driving part 123, thereby adjusting the overlapping area of ​​the first air vent 1211 and the second air vent 1221, thereby adjusting the hydrogen supply pressure and flow rate, and then stabilizing the hydrogen supply pressure and flow rate when the power of the fuel cell system 300 fluctuates, thereby avoiding the vehicle stopping due to a reduction in vehicle power or a shutdown of the fuel cell system 300.

[0043] In one embodiment of the present invention, Figure 1 As shown, the fixing member 121 includes a first cylindrical body, an end of the first cylindrical body close to the air inlet 111 has a first opening, and a first vent hole 1211 is opened on the side wall of the first cylindrical body.

[0044] It can be understood that the fixing part 121 is arranged in the pressure stabilizing body 110, dividing the pressure stabilizing cavity into an air inlet cavity 113 and an air outlet cavity 114. The fixing part 121 is a cylindrical structure with an open end, and the open end is close to the air inlet 111. The inner cavity of the first cylindrical body is connected to the air inlet cavity 113, and a first air vent 1211 is opened on the side wall of the first cylindrical body to allow hydrogen to enter the air inlet cavity 113 through the air inlet 111. There is a first distance between the side wall of the first cylindrical body and the side wall of the pressure stabilizing cavity, so that the hydrogen in the air inlet cavity 113 can enter the air outlet cavity 114 through the first air vent 1211.

[0045] like Figure 1 As shown, the moving member 122 includes a second cylindrical body sleeved on the first cylindrical body, and the second cylindrical body has a second opening at one end close to the air inlet 111 , and a second vent hole 1221 is opened on the side wall of the second cylindrical body.

[0046] It is understandable that the structure of the movable member 122 and the fixed member 121 can be the same, the movable member 122 is a second cylindrical body near the end opening of the air inlet 111, the second cylindrical body and the first cylindrical body are sleeved and matched, the side wall of the second cylindrical body is provided with a second vent 1221 that matches the first vent 1211 of the side wall of the first cylindrical body, and the movable member 122 moves to adjust the overlapping area of ​​the first vent 1211 and the second vent 1221, thereby adjusting the amount of hydrogen entering the gas outlet cavity 114 through the first vent 1211 and the second vent 1221, and then adjusting the intake amount of hydrogen supplied to the fuel cell system 300. In addition, there is a second distance between the side wall of the second cylindrical body and the side wall of the first cylindrical body, so that a hydrogen mixing chamber is formed between the second cylindrical body and the first cylindrical body to improve the air flow direction so that the gas flows into the fuel cell system 300 more evenly.

[0047] Optionally, the side wall of the first cylindrical body is axially provided with a plurality of first hole groups, each of which includes a plurality of first ventilation holes 1211 arranged along the circumferential direction; the side wall of the second cylindrical body is axially provided with a plurality of second hole groups, each of which includes a plurality of second ventilation holes 1221 arranged along the circumferential direction, and the first ventilation holes 1211 are matched with the second ventilation holes 1221.

[0048] Furthermore, the number of first hole groups is equal to the number of second hole groups, and the positions correspond one to one; when all first hole groups correspond one to one with all second hole groups, that is, all second ventilation holes 1221 are aligned with all second ventilation holes 1221, at this time, the overlapping area between the first ventilation holes 1211 and the second ventilation holes 1221 is the largest; the overlapping area between the first ventilation holes 1211 and the second ventilation holes 1221 is adjusted by adjusting the alignment number of the first hole group and the second hole group.

[0049] Optionally, a plurality of first hole groups are arranged at equal intervals along the axial direction, and a plurality of second hole groups are arranged at equal intervals along the axial direction. Preferably, the spacing between the first hole groups is a first equal spacing, and the spacing between the second hole groups is a second equal spacing, and the first equal spacing is equal to the second equal spacing.

[0050] It is understandable that when all the first vents 1211 are aligned with all the second vents 1221, the overlapping area between the first vents 1211 and the second vents 1221 is the largest; when the moving member 122 moves axially by half of the first equal spacing, the first vents 1211 and the second vents 1221 are axially misaligned, and at this time, the overlapping area between the first vents 1211 and the second vents 1221 is zero. It should be noted here that the more the first hole group and the second hole group are aligned, the more the overlapping area between the first vents 1211 and the second vents 1221, and the more the intake amount of hydrogen supplied to the fuel cell system 300, that is, the greater the hydrogen supply flow rate.

[0051] In a specific embodiment of the present invention, Figure 1 As shown, the pressure-stabilizing body 110 is cylindrical, and the pressure-stabilizing cavity inside the pressure-stabilizing body 110 is also cylindrical, and the air inlet 111 and the air outlet 112 are axially arranged at opposite ends of the pressure-stabilizing body 110; the fixed part 121 and the movable part 122 are cylindrical structures with an opening close to the end of the air inlet 111, and the fixed part 121 and the movable part 122 are coaxially sleeved in the pressure-stabilizing body 110, and the open end of the fixed part 121 has a fixed ring plate extending in the radial direction, and the fixed ring plate is connected to the side wall of the pressure-stabilizing cavity, and the open end of the movable part 122 has a movable ring plate extending in the radial direction, and the movable ring plate is slidably connected to the side wall of the pressure-stabilizing cavity.

[0052] The side wall of the fixing member 121 has a first vent hole 1211, so that the first vent hole 1211 forms a first hollow area on the side wall of the fixing member 121; the side wall of the moving member 122 has a second vent hole 1221, so that the second vent hole 1221 forms a second hollow area on the side wall of the fixing member 121, and the first hollow area corresponds to the second hollow area. For example, the first through hole and the second through hole can both be circular holes, or can be through holes of other shapes such as elliptical and polygonal shapes. It should be noted here that the shapes and sizes of the first through hole and the second through hole can be the same or different.

[0053] The driving member 123 is connected to the movable ring plate, and the movable member 122 can realize axial movement through the driving member 123, so as to realize the relative position change of the first hollow area and the second hollow area, adjust the overlapping area of ​​the first air hole 1211 and the second air hole 1221, and further adjust the intake amount of hydrogen supplied to the fuel cell system 300, so as to increase or decrease the hydrogen flow rate or hydrogen reflux as needed.

[0054] Optionally, the movable part 122 is located on the side of the fixed part 121 close to the air inlet 111, that is, the second cylindrical body is located on the side of the first cylindrical body close to the air inlet 111, then the hydrogen enters the inner cavity of the second cylindrical body through the air inlet 111 and the air inlet cavity 113, and then enters the air inlet cavity 113 through the second air vent 1221 and the first air vent 1211 in sequence. In order to integrate the air flow movement direction during air intake, the bottom plate of the second cylindrical body is designed to be conical, and the distance between the bottom plate of the second cylindrical body and the air inlet 111 gradually increases from the middle to the outside.

[0055] It should be noted that, in other embodiments, the second cylindrical body can also be located on the side of the first cylindrical body close to the air outlet 112, so that the hydrogen enters the inner cavity of the first cylindrical body through the air inlet 111 and the air inlet cavity 113, and then enters the air inlet cavity 113 through the first air vent 1211 and the second air vent 1221 in sequence. In order to integrate the air flow movement direction during air intake, the bottom plate of the first cylindrical body is designed to be conical, and the distance between the bottom plate of the first cylindrical body and the air inlet 111 gradually increases from the middle to the outside.

[0056] In one embodiment of the present invention, the outlet of the hydrogen system has a pressure reducing valve, which is connected to the air inlet 111 of the pressure stabilizing body 110. Figure 1 As shown, the gas inlet 111 is provided with a one-way valve 140 to ensure that the hydrogen will not flow back or affect the pressure of the outlet section of the pressure reducing valve.

[0057] In one embodiment of the present invention, Figure 1 As shown, the fuel-electric vehicle pressure stabilizing and delivery assembly also includes a pressure measuring element 130, which is arranged on a side of the pressure stabilizing cavity close to the air outlet 112. The pressure measurement value in the pressure stabilizing cavity is detected by the pressure measuring element 130, and the overlapping area of ​​the first air vent 1211 and the second air vent 1221 is adjusted based on the pressure measurement value to adjust the hydrogen supply pressure and flow, thereby stabilizing the hydrogen supply pressure and flow when the power of the fuel cell system 300 fluctuates.

[0058] Optionally, the fuel-electric vehicle pressure-stabilizing and delivery assembly further includes a control mechanism (not shown in the figure), which is connected to the pressure measuring element 130 and the driving member 123, and is used to obtain the pressure measurement value detected by the pressure measuring element 130, and send a corresponding control instruction to the driving member 123 based on the pressure measurement value to adjust the overlapping area of ​​the first vent hole 1211 and the second vent hole 1221, thereby automatically adjusting the hydrogen supply pressure and flow rate. It should be noted here that the pressure measurement value can be a pressure value or a pressure fluctuation value.

[0059] For example, the control mechanism adopts the controller HMS, and the driving member 123 is controlled by the controller HMS. When the controller HMS receives a signal from the vehicle control that the intake volume needs to be increased, the driving member 123 drives the moving member 122 to move to the point where the overlapping area between the first vent hole 1211 and the second vent hole 1221 is the largest, ensuring that the hydrogen reaches the maximum output; when the controller HMS receives a signal from the pressure measuring element 130 that the pressure fluctuation in the pressure stabilizing chamber is large, the controller HMS sends a command to the driving member 123, and the driving member 123 drives the moving member 122 to move, adjusts the overlapping area between the first vent hole 1211 and the second vent hole 1221, and adjusts the hydrogen pressure in the pressure stabilizing chamber, thereby stabilizing the hydrogen supply pressure and ensuring the instantaneous pressure and flow.

[0060] The embodiment of the present invention also provides a fuel cell, such as Figure 2 As shown, the fuel cell includes a supply system 200 , a fuel cell system 300 and a fuel-electric vehicle pressure stabilizing and delivery assembly 100 provided in any of the above embodiments, the air inlet 111 is connected to the supply system 200 , and the air outlet 112 is connected to the fuel cell system 300 .

[0061] It can be understood that a fuel-electric vehicle pressure-stabilizing and delivery component 100 is added between the supply system 200 and the fuel cell system 300, and the supply pressure of the gas supplied by the supply system 200 to the fuel cell system 300 is adjusted by the fuel-electric vehicle pressure-stabilizing and delivery component 100 to stabilize the supply pressure of the supply system 200, thereby stabilizing the hydrogen supply pressure and flow when the power of the fuel cell system 300 fluctuates.

[0062] For example, the supply system 200 has a secondary pressure reducing valve connected to the air inlet 111 at the rear end, and the fuel cell system 300 has a hydrogen inlet connected to the air outlet 112 .

[0063] It should be noted that in the prior art, when the power of the fuel cell system 300 fluctuates, the pressure in the pipeline will fluctuate greatly, which may easily cause the intake pressure of the fuel cell system 300 to drop instantaneously, resulting in system shutdown; in addition, the power of the whole vehicle is reduced, resulting in the parking of the whole vehicle. However, the present invention adjusts the supply pressure and flow of gas supplied by the supply system 200 to the fuel cell system 300 through the fuel-electric vehicle pressure-stabilizing and delivery component 100, reduces the engine power change caused by gas supply fluctuations, and avoids the parking of the whole vehicle caused by the reduction of the power of the whole vehicle or the shutdown of the fuel cell system 300; in addition, the fuel-electric vehicle pressure-stabilizing and delivery component 100 is matched with the fuel cell system 300, which can ensure the instantaneous pressure and flow, and then can realize the rapid change of power and the instantaneous high power output of the fuel cell system 300, improve the operation state of the vehicle under different conditions, improve the adaptability of the whole vehicle, and avoid power limitation.

[0064] Based on the fuel-electric vehicle voltage stabilizing and transmission assembly 100 provided in any of the above embodiments, the embodiment of the present invention further provides a fuel cell control method, such as Figure 3 As shown, the control method may include the following steps:

[0065] Step 10: Determine a control instruction based on the pressure and / or pressure fluctuation of the pressure stabilizing chamber.

[0066] Step 20: Based on the control instruction, the driving member 123 drives the moving member 122 to move, so as to adjust the overlapping area between the first vent hole 1211 and the second vent hole 1221 .

[0067] It can be understood that the control mechanism is used to obtain the pressure measurement value detected by the pressure measuring element 130, which can be a pressure value or a pressure fluctuation value; and based on the pressure measurement value, a corresponding control instruction is sent to the driving member 123 to adjust the overlapping area between the first vent 1211 and the second vent 1221, thereby automatically adjusting the hydrogen supply pressure and flow, thereby stabilizing the hydrogen supply pressure and flow.

[0068] Optionally, the pressure measuring element 130 uses a pressure sensor, and the control mechanism uses a controller HMS. The control method of this embodiment has the following situations:

[0069] In the first case, when the controller HMS receives the pressure sensor installed inside the pressure stabilizing chamber and detects that the pressure in the pressure stabilizing chamber is between 1.1MPa-1.4MPa, the controller HMS moves the movable member 122 through the driving member 123 so that the through holes in the second hollow area of ​​the movable member 122 and the first hollow area of ​​the fixed member 121 have a passing area of ​​50%, ensuring that hydrogen can flow normally.

[0070] In the second case, when the controller HMS receives the pressure from the pressure sensor installed inside the pressure stabilizing chamber and detects that the pressure inside the pressure stabilizing chamber is lower than 1.1 MPa, the controller HMS reports that the fuel cell system 300 has a minor fault, and moves the movable member 122 through the driving member 123 to align the through holes of the second hollow area of ​​the movable member 122 and the first hollow area of ​​the fixed member 121, thereby increasing the amount of hydrogen intake.

[0071] In the third case, when the controller HMS receives the pressure sensor installed inside the pressure stabilizing cavity and detects that the pressure inside the pressure stabilizing cavity is lower than 1MPa, the controller HMS reports a medium-level fault in the fuel cell system 300, and moves the moving member 122 through the driving member 123, so that the through hole of the second hollow area of ​​the moving member 122 and the first hollow area of ​​the fixing member 121 are aligned, thereby increasing the intake amount of hydrogen. It should be noted here that the pressure at the outlet end of the supply system 200 can also be increased at the same time to stabilize the intake pressure of the gas supplied to the fuel cell system 300.

[0072] In the fourth case, when the fuel-electric engine is in idle or low-power operation for a long time, the controller HMS receives the pressure sensor installed inside the pressure stabilizing chamber and detects that the pressure in the pressure stabilizing chamber is higher than 1.4MPa. The controller HMS moves the movable member 122 through the driving member 123, so that the through holes in the second hollow area of ​​the movable member 122 and the first hollow area of ​​the fixed member 121 have a passing area of ​​25%, ensuring that the gas in the pressure stabilizing chamber does not generate turbulence and turbulence.

[0073] In the fifth case, when the fuel cell system 300 is shut down, the controller HMS controls the driving member 123 to move the moving member 122 so that the through holes of the second hollow area of ​​the moving member 122 and the first hollow area of ​​the fixing member 121 are completely covered.

[0074] In the sixth case, when the controller HMS receives the pressure sensor installed inside the pressure stabilizing cavity and detects that the pressure in the pressure stabilizing cavity fluctuates by more than 0.3MPa, the controller HMS moves the moving part 122 through the driving part 123, so that the through-holes of the second hollow area of ​​the moving part 122 and the first hollow area of ​​the fixed part 121 reach 75% through the through-hole area, ensuring that the pressure in the pressure stabilizing cavity can be quickly stabilized. It should be noted here that if the pressure still fluctuates by more than 0.2MPa after the through-hole area reaches 75%, the controller HMS moves the moving part 122 through the driving part 123, so that the through-holes of the second hollow area of ​​the moving part 122 and the first hollow area of ​​the fixed part 121 are aligned, ensuring that hydrogen passes quickly to increase the intake volume.

[0075] It should be noted that the above 1.1MPa-1.4Mpa is the required value of the pressure stabilizing cavity, which can be adjusted according to the actual situation on site during actual operation. The pressure fluctuation value of the pressure stabilizing cavity should be lower than the fluctuation threshold, for example, the fluctuation threshold is 0.2Mpa, which can be adjusted according to the actual situation on site during actual operation; when the pressure fluctuation value exceeds the fluctuation threshold, the through-hole area of ​​the second hollow area of ​​the moving part 122 and the first hollow area of ​​the fixed part 121 is increased, and when the pressure fluctuation value does not exceed the fluctuation threshold, there is no need to adjust the through-hole area of ​​the second hollow area and the first hollow area.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fuel-electric vehicle voltage stabilizing transmission component, characterized in that: include: A voltage stabilizing body, wherein the voltage stabilizing body is configured with a voltage stabilizing cavity, wherein the voltage stabilizing cavity has an air inlet and an air outlet, wherein the air inlet is used to connect to a supply system, and the air outlet is used to connect to a fuel cell system; A voltage stabilizing component, comprising a fixed component, a movable component and a driving component, wherein the fixed component is arranged on the voltage stabilizing body to separate the voltage stabilizing cavity into an air inlet cavity and an air outlet cavity, the air inlet cavity is communicated with the air inlet, the air outlet cavity is communicated with the air outlet, and the fixed component is provided with a plurality of first air vents; the movable component is slidably connected to the voltage stabilizing body, and the movable component is provided with a plurality of second air vents; the driving component is connected to the movable component, and the driving component drives the movable component to move, so as to adjust the overlapping area between the first air vents and the second air vents; The fixing member comprises a first cylindrical body, an end of the first cylindrical body close to the air inlet has a first opening, and the first vent hole is provided on a side wall of the first cylindrical body; a plurality of first hole groups are provided on the side wall of the first cylindrical body along the axial direction, and the first hole group comprises a plurality of first vent holes arranged along the circumferential direction; The moving member comprises a second cylindrical body sleeved on the first cylindrical body, the second cylindrical body has a second opening at one end close to the air inlet, and the second vent hole is opened on the side wall of the second cylindrical body; the side wall of the second cylindrical body is axially provided with a plurality of second hole groups, the second hole groups include a plurality of second vent holes arranged in a circumferential direction, and the first vent hole is adapted to the second vent hole; A distance is provided between the side wall of the second cylindrical body and the side wall of the first cylindrical body to form a hydrogen mixing chamber.

2. The fuel-electric vehicle voltage stabilizing and transmission assembly according to claim 1, characterized in that: The number of the first hole group is equal to the number of the second hole group, and / or, The plurality of first hole groups are arranged at a first equal interval in the axial direction, and the plurality of second hole groups are arranged at a second equal interval in the axial direction, and the first equal interval is equal to the second equal interval.

3. The fuel-electric vehicle voltage stabilizing and transmission assembly according to claim 1, characterized in that: The second cylindrical body is close to the air inlet, and the distance between the bottom plate of the second cylindrical body and the air inlet gradually increases from the middle to the outside.

4. The fuel-electric vehicle voltage stabilizing and transmission assembly according to any one of claims 1 to 3, characterized in that: It also includes a pressure measuring element, which is arranged on a side of the pressure stabilizing cavity close to the air outlet.

5. The fuel-electric vehicle voltage stabilizing and conveying assembly according to claim 4, characterized in that: It also includes a control mechanism, which is connected to the pressure measuring element and the driving member. The control mechanism is used to obtain the pressure measurement value detected by the pressure measuring element and send a control instruction to the driving member based on the pressure measurement value to adjust the overlapping area of ​​the first vent hole and the second vent hole.

6. The fuel-electric vehicle voltage stabilizing and transmission assembly according to any one of claims 1 to 3, characterized in that: The air inlet is provided with a one-way valve.

7. A fuel cell, characterized in that: It comprises a supply system, a fuel cell system and a fuel-electric vehicle voltage-stabilizing and transmission assembly as described in any one of claims 1 to 6, wherein the air inlet is connected to the supply system, and the air outlet is connected to the fuel cell system.

8. A method for controlling a fuel cell, characterized in that: Based on the fuel-electric vehicle voltage stabilizing transmission component according to any one of claims 1 to 6, the method comprises: Determining a control instruction based on the pressure and / or pressure fluctuations of the pressure stabilizing chamber; Based on the control instruction, the driving member drives the moving member to move so as to adjust the overlapping area of ​​the first vent hole and the second vent hole.

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