Hydrogen storage system and vehicle

Abstract

The utility model relates to the technical field of new energy vehicles, and discloses a hydrogen storage system and a vehicle. The hydrogen storage system comprises a hydrogen storage and supply part, and the hydrogen storage and supply part comprises at least two gas cylinder assemblies used for storing and outputting high-pressure hydrogen; the first pressure reducing assemblies are in one-to-one correspondence with the gas cylinder assemblies, gas inlets of the first pressure reducing assemblies are communicated with gas outlets of the corresponding gas cylinder assemblies, and the first pressure reducing assemblies are used for reducing the pressure of the high-pressure hydrogen; a gas inlet of the hydrogen supply pipeline is communicated with gas outlets of all the first pressure reduction assemblies, and a gas outlet of the hydrogen supply pipeline is used for being communicated with a fuel cell. The hydrogen storage system solves the problem that a hydrogen storage system in the prior art is high in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicles, and in particular to a hydrogen storage system and a vehicle. Background Art

[0002] The on-board hydrogen storage system is a device used to store hydrogen fuel on the vehicle side to supply the fuel needs of hydrogen-powered vehicles. It plays the role of pressurizing and storing hydrogen, allowing hydrogen-powered vehicles to travel for a long time and provide the required fuel. When the vehicle is driving, the on-board hydrogen storage system supplies hydrogen to the fuel cell system. The fuel cell reacts hydrogen with oxygen to generate electricity to drive the motor.

[0003] On-board hydrogen storage systems require strict safety measures. Hydrogen is a flammable, explosive and high-pressure gas, and care must be taken to prevent leakage and avoid fire when storing and using it. Therefore, the design and manufacture of on-board hydrogen storage systems must comply with relevant standards and certification requirements to ensure the safety and reliability of the vehicle.

[0004] With the development of fuel cell systems, their power is getting bigger and bigger. Under the current electric-electric hybrid strategy, the battery does not need to have a large storage capacity, and the pure electric driving range of the battery will become shorter and shorter. Therefore, the reliability requirements of the hydrogen storage system are higher. However, because all the gas cylinders in the existing hydrogen storage system are connected to the same pressure reducing valve through their own bottle valves and then supply hydrogen to the fuel cell, the requirements for the pressure reducing valve are high and usually need to be customized, which increases the cost of the hydrogen storage system. The pressure at the inlet of the pressure reducing valve is also high, and the safety requirements for other parts of the hydrogen supply pipeline are also increased. Therefore, how to reduce the cost of the hydrogen storage system so that the hydrogen storage system can still achieve the required safety level at a low cost is an urgent problem that the industry needs to solve. Utility Model Content

[0005] The utility model provides a hydrogen storage system and a vehicle, which are used to solve the problem of high cost of the hydrogen storage system in the prior art.

[0006] The utility model provides a hydrogen storage system, including a hydrogen storage and hydrogen supply component, wherein the hydrogen storage and hydrogen supply component includes:

[0007] At least two gas cylinder assemblies for storing and delivering high-pressure hydrogen;

[0008] a first decompression assembly, corresponding one to one with the gas cylinder assembly, the gas inlet of the first decompression assembly being in communication with the gas outlet of the corresponding gas cylinder assembly, and the first decompression assembly being used to decompress the high-pressure hydrogen;

[0009] A hydrogen supply pipeline, wherein the air inlet of the hydrogen supply pipeline is connected to the air outlets of all the first pressure reducing components, and the air outlet of the hydrogen supply pipeline is used to be connected to the fuel cell.

[0010] According to the hydrogen storage system provided by the utility model, the hydrogen storage and supply component also includes:

[0011] A second pressure reducing assembly, wherein the air inlet of the second pressure reducing assembly is connected to the air outlets of all the first pressure reducing assemblies, the air outlet of the second pressure reducing assembly is connected to the air inlet of the hydrogen supply pipeline, and the second pressure reducing assembly is used to reduce the pressure of the high-pressure hydrogen again.

[0012] According to the hydrogen storage system provided by the utility model, the first pressure reducing assembly includes:

[0013] A decompression pipeline, wherein the decompression pipeline corresponds to the gas cylinder assembly one by one, the air inlet of the decompression pipeline is communicated with the air outlet of the corresponding gas cylinder assembly; the air outlet of the decompression pipeline is communicated with the air inlet of the second decompression assembly;

[0014] The first pressure reducing valve is arranged on the pressure reducing pipeline and is used for reducing the pressure of the high-pressure hydrogen.

[0015] According to the hydrogen storage system provided by the utility model, the second decompression component includes:

[0016] a second pressure reducing valve, wherein the air inlet of the second pressure reducing valve is connected to the air outlets of all the pressure reducing pipelines;

[0017] A second safety valve, wherein the air inlet of the second safety valve is communicated with the air outlet of the second pressure reducing valve, and the air outlet of the second safety valve is communicated with the air inlet of the hydrogen supply pipeline.

[0018] The hydrogen storage system provided by the utility model also includes:

[0019] A hydrogenation component is used to be detachably connected to the hydrogenation device through a hydrogenation port, and the gas outlet of the hydrogenation component is connected between the gas cylinder assembly and the first pressure reducing assembly, and is used to hydrogenate the gas cylinder assembly.

[0020] According to the hydrogen storage system provided by the utility model, the hydrogenation component includes:

[0021] a first hydrogenation assembly, the first hydrogenation assembly being used to be detachably connected to the hydrogenation device through a hydrogenation port;

[0022] The second hydrogenation assembly corresponds one to one with the gas cylinder assembly; the gas outlet of the first hydrogenation assembly is connected with the gas inlet of all the second hydrogenation assemblies; the gas outlet of the second hydrogenation assembly is connected between the gas cylinder assembly and the first pressure reducing assembly, and is used to hydrogenate the corresponding gas cylinder assembly.

[0023] The hydrogen storage system provided by the utility model further includes a detection component; the detection component includes:

[0024] a temperature detection assembly, used to detect a first temperature of the high-pressure hydrogen in the gas cylinder assembly;

[0025] A pressure detection component, used to detect the pressure information of the hydrogen storage and supply component and / or the hydrogenation component;

[0026] or / and;

[0027] The concentration detection component is used to detect the hydrogen leakage information of the hydrogen storage and supply component and / or the hydrogenation component.

[0028] According to the hydrogen storage system provided by the utility model, the pressure detection component includes:

[0029] A first pressure detection member, used for detecting first pressure information of the hydrogen storage and supply component;

[0030] The second pressure detection component is used to detect the second pressure information of the hydrogenation component.

[0031] According to the hydrogen storage system provided by the utility model, the concentration detection component includes:

[0032] A first concentration detection component, used to detect first hydrogen leakage information of the hydrogen storage and supply component;

[0033] The second concentration detection component is used to detect second hydrogen leakage information of the hydrogenation component.

[0034] The utility model also provides a vehicle, comprising a vehicle body, and any one of the above-mentioned hydrogen storage systems; the hydrogen storage system is connected to the vehicle body.

[0035] The utility model provides a hydrogen storage system and a vehicle. The hydrogen storage system is provided with a first pressure reducing assembly corresponding to a gas cylinder assembly, and the air inlet of the first pressure reducing assembly is connected to the air outlet of the corresponding gas cylinder assembly, and the air outlets of all the first pressure reducing assemblies are connected to the air inlet of the hydrogen supply pipeline. After the high-pressure hydrogen in the gas cylinder assembly is reduced in pressure by the first pressure reducing assembly, it flows to the fuel cell through the hydrogen supply pipeline to serve as the fuel cell fuel. Compared with the means of connecting the air outlets of the gas cylinders to a pressure reducing device in the existing hydrogen storage system, the utility model is provided with multiple first pressure reducing assemblies, and each gas cylinder assembly is equipped with at least one first pressure reducing assembly, and the gas cylinder assembly and the corresponding first pressure reducing assembly are connected in series, so that the pressure regulating function of the hydrogen storage system can be distributed to each gas cylinder assembly, and the corresponding gas cylinder assembly can be individually controlled by the first pressure reducing assembly, thereby improving the accuracy and speed of pressure control. In addition, it can also prevent a single pressure device from being subjected to excessive pressure load, thereby providing stability and reliability of the hydrogen storage system. The gas cylinder assembly contains high-pressure hydrogen, and the pressure in each first pressure reducing assembly and the hydrogen supply pipeline is relatively low, which makes the hydrogen storage system safer and has lower requirements for pipelines and valves, etc., reduces the cost of the hydrogen storage system, improves the service life and reliability of valves, etc., and solves the problem of high cost of hydrogen storage systems in the prior art.

[0036] The vehicle of the present invention includes the above-mentioned hydrogen storage system and thus has at least the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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.

[0038] Figure 1 This is one of the structural schematic diagrams of the hydrogen storage system provided by the utility model;

[0039] Figure 2 This is the second structural schematic diagram of the hydrogen storage system provided by the utility model.

[0040] Reference numerals:

[0041] 110, gas cylinder assembly; 111, gas cylinder; 112, integrated cylinder valve; 1121, overflow valve; 1122, stop valve; 1123, first solenoid valve; 1124, thermal thrombolysis valve; 1125, check valve;

[0042] 120, first pressure reducing assembly; 121, pressure reducing pipeline; 122, first pressure reducing valve; 1221, first check valve; 1222, first filter; 1223, multi-stage pressure reducing valve; 1224, electromagnetic cut-off valve;

[0043] 130, second pressure reducing assembly; 131, second pressure reducing valve; 132, second safety valve; 133, second filter;

[0044] 140, first vent pipeline; 150, second vent pipeline; 160, vent needle valve;

[0045] 210, first hydrogenation assembly; 201, hydrogenation port; 211, first hydrogenation pipeline; 212, second solenoid valve; 213, third one-way valve; 214, third filter;

[0046] 220, second hydrogenation assembly; 221, second hydrogenation pipeline; 222, second one-way valve;

[0047] 310. Temperature detection component;

[0048] 321, a first pressure sensor; 322, a second pressure sensor; 323, a third pressure sensor; 324, a fourth pressure sensor;

[0049] 331. A first leakage detector; 332. A second leakage detector; 333. A third leakage detector; 334. A fourth leakage detector. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0051] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "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 utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0052] In the description of the embodiments of the present utility model, 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0053] 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.

[0054] 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 utility model embodiment. 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.

[0055] like Figure 1 As shown, a specific embodiment of the first aspect of the utility model provides a hydrogen storage system. The hydrogen storage system includes a hydrogen storage and supply component. The hydrogen storage and supply component is used to store high-pressure hydrogen and supply hydrogen to a fuel cell.

[0056] The hydrogen storage and supply components include at least two gas cylinder assemblies 110, a first pressure reducing assembly 120 and a hydrogen supply pipeline;

[0057] Among them, at least two gas cylinder assemblies 110 are used to store and output high-pressure hydrogen; the first decompression assembly 120 corresponds to the gas cylinder assembly 110 one by one, the air inlet of the first decompression assembly 120 is connected to the air outlet of the corresponding gas cylinder assembly 110, and the first decompression assembly 120 is used to decompress the high-pressure hydrogen. The air inlet of the hydrogen supply pipeline is connected to the air outlet of all the first decompression assemblies 120, and the air outlet of the hydrogen supply pipeline is used to communicate with the fuel cell.

[0058] In this embodiment, by setting a first decompression assembly 120 corresponding to the gas cylinder assembly 110, and the air inlet of the first decompression assembly 120 is connected to the air outlet of the corresponding gas cylinder assembly 110, and the air outlets of all the first decompression assemblies 120 are connected to the air inlet of the hydrogen supply pipeline, the high-pressure hydrogen in the gas cylinder assembly 110 is decompressed by the first decompression assembly 120, and then flows to the fuel cell through the hydrogen supply pipeline as the fuel cell fuel. Compared with the means of connecting the air outlet of the gas cylinder 111 to a decompression device in the existing hydrogen storage system, this embodiment sets a plurality of first decompression assemblies 120, and each gas cylinder assembly 110 is equipped with at least one first decompression assembly 120, and the gas cylinder assembly 110 and the corresponding first decompression assembly 120 are connected in series, so that the pressure regulation function of the hydrogen storage system can be distributed to each gas cylinder assembly 110, and the corresponding gas cylinder assembly 110 can be individually controlled by the first decompression assembly 120, thereby improving the accuracy and speed of pressure control. In addition, it can also avoid a single pressure device from being subjected to excessive pressure load, thereby providing stability and reliability of the hydrogen storage system. The gas cylinder assembly 110 contains high-pressure hydrogen, and the pressure in each first pressure reducing assembly 120 and the hydrogen supply pipeline is relatively low, which makes the hydrogen storage system safer, has lower requirements for pipelines and valves, etc., reduces the cost of the hydrogen storage system, and improves the service life and reliability of valves, etc., solving the problem of high cost of hydrogen storage systems in the prior art.

[0059] In some embodiments, the one-to-one correspondence between the first decompression assembly 120 and the gas cylinder assembly 110 means that one gas cylinder assembly 110 is equipped with at least one first decompression assembly 120. Preferably, one gas cylinder assembly 110 is equipped with one first decompression assembly 120.

[0060] In some embodiments, the hydrogen storage and supply component further includes a second decompression assembly 130; the air inlet of the second decompression assembly 130 is connected to the air outlet of all the first decompression assemblies 120, and the air outlet of the second decompression assembly 130 is connected to the air inlet of the hydrogen supply pipeline, and the second decompression assembly 130 is used to re-decompress the high-pressure hydrogen. By arranging the second decompression assembly 130 between the air outlet of all the first decompression assemblies 120 and the hydrogen supply pipeline, on the one hand, the high-pressure hydrogen can be re-decompressed, and on the other hand, the versatility of the hydrogen storage system can be enhanced, the life of the first decompression assembly 120 can be protected, and the safety can be improved.

[0061] Because the pressure value after decompression has been set at the factory, when the hydrogen storage system requires other pressure values, the existing hydrogen storage system cannot change the pressure and can only replace the pressure reducing valve. Because the hydrogen pressure in the existing hydrogen storage system is relatively high, the hydrogen pressure passing through the pressure reducing valve is usually equal to the pressure at the gas cylinder outlet, which leads to stricter requirements for the pressure reducing valve, and usually requires a customized pressure reducing valve, resulting in high costs. The hydrogen storage system of this embodiment, because a second pressure reducing assembly 130 is added between the gas outlet of the first pressure reducing assembly 120 and the gas inlet of the hydrogen supply pipeline, and in view of the fact that the hydrogen pressure here is lower than the pressure at the gas inlet of the first pressure reducing assembly 120, there is no need to customize the pressure reducing valve specifically, and only the second pressure reducing assembly 130 needs to be directly replaced, which not only can adjust the hydrogen pressure at the gas outlet of the hydrogen supply pipeline, but also expand the versatility of the hydrogen storage system and reduce the cost of the hydrogen storage system.

[0062] In some embodiments, the gas cylinder assembly 110 includes a gas cylinder 111 and an integrated cylinder valve 112 ; the air inlet of the integrated cylinder valve 112 is connected to the air outlet of the gas cylinder 111 , and the air outlet of the integrated cylinder valve 112 is connected to the air inlet of the first decompression assembly 120 .

[0063] Specifically, the integrated bottle valve 112 has a first air inlet and a second air inlet; the integrated bottle valve 1121 , the stop valve 1122 , the first solenoid valve 1123 , the thermal thrombolysis valve 1124 , and the check valve 1125 are integrated in the integrated bottle valve 112 .

[0064] The air inlet of the thermal dissolving valve 1124 is connected to the first air inlet, ensuring that when the fuel cell vehicle encounters a fire, the thermal dissolving valve 1124 can automatically melt open at high temperature, quickly unloading the high-pressure hydrogen in the on-board gas cylinder 111, and avoiding an explosion accident caused by overpressure caused by the heating of the high-pressure hydrogen in the on-board gas cylinder 111.

[0065] The high-pressure hydrogen flowing out of the gas cylinder 111 passes through the overflow valve 1121 , the stop valve 1122 and the first solenoid valve 1123 in sequence, and then flows out from the gas outlet of the integrated bottle valve 112 .

[0066] The check valve 1125 is disposed in a bypass of the integrated bottle valve 112 , the air inlet of the check valve 1125 is communicated with the air outlet of the first solenoid valve 1123 , and the air outlet of the check valve 1125 is communicated with the air inlet of the first solenoid valve 1123 .

[0067] Furthermore, a manual valve (not shown in the figure) is also provided in the integrated bottle valve 112 to ensure the independence of each gas cylinder 111. It is usually in a normally open state. When a gas cylinder 111 needs to be repaired or replaced for some reason, the manual valve is closed without affecting the normal operation of the entire hydrogen storage system. The function of the manual valve is to replace the first solenoid valve 1123 to close the pipeline when the first solenoid valve 1123 fails.

[0068] In some embodiments, the first pressure reducing assembly 120 includes a pressure reducing pipeline 121 and a first pressure reducing valve 122;

[0069] Among them, the pressure reducing pipeline 121 corresponds to the gas cylinder assembly 110 one by one, and the air inlet of the pressure reducing pipeline 121 is connected to the air outlet of the corresponding gas cylinder assembly 110; the air outlet of the pressure reducing pipeline 121 is connected to the air inlet of the second pressure reducing assembly 130. The first pressure reducing valve 122 is arranged on the pressure reducing pipeline 121, and is used to reduce the pressure of high-pressure hydrogen. By setting the first pressure reducing valve 122, the high-pressure hydrogen output from the corresponding gas cylinder assembly 110 can be separately reduced in pressure. The first pressure reducing valve 122 is combined with the second pressure reducing assembly 130 to adjust the high-pressure hydrogen from the gas cylinder 111 to the low-pressure hydrogen required by the fuel cell engine, and can maintain the stability of the output hydrogen pressure in the rapid change of the hydrogen flow demand.

[0070] In some embodiments, the second pressure reducing assembly 130 includes a second pressure reducing valve 131 and a second safety valve 132; the air inlet of the second pressure reducing valve 131 is connected to the air outlets of all the pressure reducing pipelines 121; the air inlet of the second safety valve 132 is connected to the air outlet of the second pressure reducing valve 131, and the air outlet of the second safety valve 132 is connected to the air inlet of the hydrogen supply pipeline. Specifically, the set pressure of the second safety valve 132 is greater than the pressure value of the air outlet of the first pressure reducing valve 122. When the pressure value of the air outlet of the first pressure reducing valve 122 is greater than the set pressure of the safety valve, the second safety valve 132 is tripped to ensure that the pressure value of the air outlet of the second pressure reducing valve 131 is constant.

[0071] Optionally, the set pressure of the second safety valve 132 is 1.9 MPa to 2.0 MPa.

[0072] Optionally, after the second safety valve 132 is tripped, the hydrogen at the outlet of the second pressure reducing valve 131 is discharged through the second safety valve 132 .

[0073] In some embodiments, the second pressure reducing assembly 130 further includes a second filter 133; the second filter 133 is disposed between the gas outlet of the pressure reducing pipeline 121 and the gas inlet of the second pressure reducing valve 131. The second filter 133 can filter impurities in the hydrogen to prevent the impurities from entering the second pressure reducing valve 131 and affecting the life of the second pressure reducing valve 131.

[0074] In some embodiments, the first pressure reducing valve 122 is an integrated pressure reducing valve, or / and the second pressure reducing valve 131 is an integrated pressure reducing valve.

[0075] Optionally, the first pressure reducing valve 122 and the second pressure reducing valve 131 have the same structure, but the pressure at the air inlet of the first pressure reducing valve 122 is greater than the pressure at the air inlet of the second pressure reducing valve 131 .

[0076] Specifically, the integrated pressure reducing valve integrates the first one-way valve 1221, the first filter 1222 and the multi-stage pressure reducing valve 1223; the inlet front end of the integrated pressure reducing valve integrates the electromagnetic cut-off valve 1224, and the outlet of the integrated pressure reducing valve integrates the pressure detection interface, the safety valve interface (not shown in the figure) and the relief valve interface (not shown in the figure). Among them, the first one-way valve 1221 is to avoid the impact of the reverse pressure shock on the life of the valve core. The first filter 1222 is to filter the impurities in the hydrogen to prevent the impurities from entering the valve body and affecting its life. The safety valve interface is connected to the safety valve (not shown in the figure), and the relief valve interface is connected to the relief valve (not shown in the figure). The role of the safety valve and the relief valve is to limit the flow of hydrogen in the pipeline until the flow is cut off when the hydrogen flow in the pressure reducing pipeline 121 suddenly increases due to an accident downstream. The multi-stage pressure reducing valve 1223 is arranged downstream of the electromagnetic cut-off valve 1224. The multi-stage pressure reducing valve 1223 includes at least two pressure reducing valves connected in series to achieve multi-stage pressure reduction of high-pressure hydrogen.

[0077] Optionally, the electromagnetic shut-off valve 1224 is the switch of the pressure reducing pipeline 121. When the fuel cell vehicle is "ignited", the electromagnetic shut-off valve 1224 automatically opens to supply hydrogen to the fuel cell engine. When the vehicle is "turned off", the electromagnetic shut-off valve 1224 automatically closes to stop supplying hydrogen.

[0078] In some embodiments, the hydrogen storage and supply component further includes a first venting pipeline 140 and a second venting pipeline 150; the first venting pipeline 140 is connected to the thermal thrombolysis valve 1124. Further, in order to reduce the resistance when the hydrogen is quickly discharged, a thicker pipe diameter and a larger bending radius are selected, and the end of the first venting pipeline 140 is led to a safe place outside the car, and is equipped with a soft plug to prevent foreign objects from falling into the pipeline and causing blockage. At the same time, when the thermal thrombolysis valve 1124 is opened due to heat, the high-pressure hydrogen in the pipeline can easily break the plug and be quickly discharged.

[0079] Optionally, the diameter of the first vent line 140 is greater than the diameter of the pressure reducing line 121 , and the bending radius of the first vent line 140 is greater than the bending radius of the pressure reducing line 121 .

[0080] The first air inlet of the second venting pipeline 150 is connected to the second air outlet of the second safety valve 132, and the second air inlet of the second venting pipeline 150 is connected to the hydrogen supply pipeline through the venting needle valve 160. When it is not necessary to provide hydrogen to the fuel cell, the venting needle valve 160 is opened to vent the hydrogen in the hydrogen storage system pipeline, thereby improving the safety of use.

[0081] In some embodiments, the hydrogen storage system further includes a hydrogenation component; the hydrogenation component is detachably connected to the hydrogenation device via the hydrogenation port 201, and the gas outlet of the hydrogenation component is connected between the gas cylinder assembly 110 and the first pressure reducing assembly 120, for hydrogenating the gas cylinder assembly 110.

[0082] In some embodiments, the hydrogenation component includes a first hydrogenation assembly 210 and a second hydrogenation assembly 220; the first hydrogenation assembly 210 is used to be detachably connected to the hydrogenation device through the hydrogenation port 201; the second hydrogenation assembly 220 corresponds to the gas cylinder assembly 110 one by one; the gas outlet of the first hydrogenation assembly 210 is connected to the gas inlet of all the second hydrogenation assemblies 220; the gas outlet of the second hydrogenation assembly 220 is between the gas cylinder assembly 110 and the first pressure reducing assembly 120, and is used to hydrogenate the corresponding gas cylinder assembly 110. Hydrogen flows from the gas outlet of the first hydrogenation assembly 210 to each second hydrogenation assembly 220, and finally flows into the gas cylinder 111 through the check valve 1125 of the integrated bottle valve 112, so as to realize the hydrogenation of the gas cylinder 111.

[0083] In some embodiments, the second hydrogenation assembly 220 includes a second hydrogenation pipeline 221 and a second one-way valve 222;

[0084] Among them, the second hydrogenation pipeline 221 corresponds to the gas cylinder assembly 110 one by one; the gas inlet of the second hydrogenation pipeline 221 is connected to the gas outlet of the first hydrogenation assembly 210, and the gas outlet of the second hydrogenation pipeline 221 is connected to the corresponding gas cylinder assembly 110. The second one-way valve 222 is arranged on the second hydrogenation pipeline 221, which is used to make hydrogen flow in one direction. Specifically, the gas outlet of the second hydrogenation pipeline 221 is connected between the gas outlet of the integrated bottle valve 112 and the gas inlet of the first pressure reducing valve 122, and the hydrogen flows into the gas cylinder 111 through the check valve 1125, the stop valve 1122, and the overflow valve 1121 to realize the hydrogenation of the gas cylinder 111. By setting the second one-way valve 222 to avoid the gas cylinders 111 being connected in parallel, each gas cylinder 111 can be independently controlled, the fault can be handled separately, and the temperature rise caused by the gas flowing between the gas cylinders 111 can be avoided.

[0085] In some embodiments, the first hydrogenation assembly 210 includes a first hydrogenation pipeline 211; the hydrogenation port 201 of the first hydrogenation pipeline 211 is used to be detachably connected to the hydrogenation device, and the gas outlet of the first hydrogenation pipeline 211 is connected to the gas inlet of all the second hydrogenation pipelines 221; the first hydrogenation pipeline 211 is provided with a second solenoid valve 212, and the second solenoid valve 212 is used to control the on and off of the first hydrogenation pipeline 211 to avoid the danger of overpressure caused by the hydrogenation device in case of loss of control, and ensure that the gas cylinder 111 will not withstand a safety pressure exceeding its design. The first hydrogenation pipeline 211 is also provided with a third one-way valve 213, and the third one-way valve 213 is arranged upstream of the second solenoid valve 212 to prevent the reverse outflow of high-pressure hydrogen in the gas cylinder 111. The first hydrogenation pipeline 211 is also provided with a third filter 214; the third filter 214 is arranged upstream of the third one-way valve 213, and the third filter 214 can block tiny dust particles accidentally brought in during the hydrogenation process.

[0086] like Figure 1and Figure 2 As shown, in some embodiments, the hydrogen storage system further includes a detection component; the detection component is used to detect hydrogen parameters of the hydrogen storage system. The hydrogen parameters include hydrogen pressure, hydrogen temperature and / or hydrogen leakage concentration.

[0087] In some embodiments, the hydrogen storage system also includes a hydrogen controller; the hydrogen controller is electrically connected to the detection component, the hydrogen storage and supply component, and the hydrogenation component; the hydrogen controller controls the working state of the hydrogen storage and supply component or the hydrogenation component according to the gas parameters to ensure the normal operation of the hydrogen storage system.

[0088] In some embodiments, the detection component includes a temperature detection component 310, a pressure detection component or / and a concentration detection component;

[0089] Among them, the temperature detection component 310 is used to detect the first temperature of the high-pressure hydrogen in the gas cylinder component 110; the pressure detection component is used to detect the pressure information of the hydrogen storage and hydrogen supply components and / or the hydrogenation components; the concentration detection component is used to detect the hydrogen leakage information of the hydrogen storage and hydrogen supply components and / or the hydrogenation components. By setting the temperature detection component 310, the pressure detection component and / or the concentration detection component, it is convenient to check the hydrogen pressure, hydrogen temperature and / or hydrogen leakage concentration of the hydrogen storage system. According to the hydrogen pressure, hydrogen temperature and / or hydrogen leakage concentration, the closing and opening of each valve in the hydrogen storage system are controlled to ensure that the hydrogen storage system can operate safely.

[0090] Further, the temperature detection component 310 is provided at the temperature detection interface of the gas cylinder component 110, and is used to detect the first temperature of the high-pressure hydrogen in the gas cylinder component 110. Specifically, the temperature detection component 310 includes a temperature sensor. Each integrated bottle valve 112 has a temperature detection interface, and the temperature sensor is provided at the temperature detection interface, and is used to detect the first temperature of the high-pressure hydrogen entering the corresponding integrated bottle valve 112.

[0091] Optionally, when the first temperature is higher than the safety temperature threshold, the first solenoid valve 1123 of the integrated bottle valve 112 can be manually turned off to achieve separate control of the gas cylinder assembly 110, thereby avoiding the impact of a single point failure on the entire hydrogen storage system. Even if there is a problem with the temperature of a gas cylinder 111, other gas cylinders 111 can still work normally, ensuring the stability and reliability of the hydrogen storage system.

[0092] Optionally, the temperature detection component 310 is electrically connected to the hydrogen controller. When the first temperature is higher than the safety temperature threshold, the hydrogen controller controls the first solenoid valve 1123 of the integrated bottle valve 112 to be turned off, thereby realizing separate control of the gas cylinder component 110, thereby avoiding the impact of a single point failure on the entire hydrogen storage system. Even if there is a problem with the temperature of a gas cylinder 111, other gas cylinders 111 can still work normally, thereby ensuring the stability and reliability of the hydrogen storage system.

[0093] In some embodiments, the pressure detection assembly includes a first pressure detection component and a second pressure detection component; the first pressure detection component is used to detect first pressure information of the hydrogen storage and supply component; the second pressure detection component is used to detect second pressure information of the hydrogenation component.

[0094] By providing the first pressure detection member and the second pressure detection member, the first pressure information of the hydrogen storage and supply member and the second pressure information of the hydrogenation member can be detected simultaneously, and the closing or opening of each valve body of the hydrogen storage and supply member can be controlled according to the first pressure information to ensure that the hydrogen storage system can normally and safely deliver hydrogen to the fuel cell. The closing or opening of each valve body of the hydrogenation member can also be controlled according to the second pressure information to ensure that the gas cylinder 111 can be safely hydrogenated.

[0095] Optionally, when the first pressure information is not within the first pressure information threshold range, the corresponding valve in the hydrogen storage and supply component can be controlled to be closed, ensuring that the hydrogen storage system operates in a safe environment, thereby improving the safety of the hydrogen storage system.

[0096] It can be understood that the first pressure information threshold range refers to a range value formed by a maximum first pressure information threshold and a minimum first pressure information threshold. The maximum first pressure information threshold and the minimum first pressure information threshold are both values ​​preset in the control system in advance.

[0097] Optionally, when the second pressure information is not within the second pressure information threshold range, the corresponding valve in the hydrogenation component can be controlled to be closed, ensuring that the hydrogen storage system can hydrogenate the gas cylinder in a safe environment, thereby improving the hydrogenation safety of the hydrogen storage system.

[0098] It can be understood that the second pressure information threshold range refers to a range value formed by a maximum second pressure information threshold and a minimum second pressure information threshold. The maximum second pressure information threshold and the minimum second pressure information threshold are both values ​​preset in the control system in advance.

[0099] Further, the first pressure detection component includes a first pressure sensor 321, a second pressure sensor 322 and a third pressure sensor 323; the second pressure detection component includes a fourth pressure sensor 324;

[0100] Among them, the first pressure sensor 321 is arranged at the pressure detection interface of the gas cylinder assembly 110, and is used to detect the first pressure of the high-pressure hydrogen output from the gas outlet of the gas cylinder assembly 110; the second pressure sensor 322 is arranged at the pressure detection interface of the first pressure reducing assembly 120, and is used to detect the second pressure of the high-pressure hydrogen output from the gas outlet of the first pressure reducing assembly 120; the third pressure sensor 323 is arranged at the pressure detection interface of the hydrogen supply pipeline, and is used to detect the third pressure of the high-pressure hydrogen input from the gas inlet of the gas supply pipeline; the fourth pressure sensor 324 is arranged at the pressure detection interface of the first hydrogenation assembly 210, and is used to detect the fourth pressure of the hydrogen in the first hydrogenation assembly 210. By setting the pressure detection assembly, the hydrogen pressure of the hydrogen storage system can be detected, and the closing or opening of each valve body in the hydrogen storage system can be controlled according to the hydrogen pressure to ensure the normal and safe operation of the hydrogen storage system.

[0101] Specifically, the first pressure sensor 321 is arranged at the pressure detection interface of the integrated bottle valve 112, and is used to detect the first pressure of the outlet of the integrated bottle valve 112. The second pressure sensor 322 is arranged at the pressure detection interface of the pressure reducing pipeline 121, and is used to detect the second pressure of the outlet of the pressure reducing pipeline 121. The third pressure sensor 323 is arranged at the pressure detection interface of the hydrogen supply pipeline, and is used to detect the third pressure of the air inlet of the gas supply pipeline. The fourth pressure sensor 324 is arranged at the pressure detection interface of the first hydrogenation pipeline 211, and is used to detect the fourth pressure of the air inlet of the second solenoid valve 212. Hydrogen pressure includes a first pressure, a second pressure, a third pressure and a fourth pressure. In some embodiments, the on-off of the first solenoid valve 1123, the solenoid cut-off valve 1224 and the second solenoid valve 212 can be manually adjusted according to the hydrogen gas pressure to ensure the normal operation of the hydrogen storage system. In some other embodiments, the pressure detection component is electrically connected to the hydrogen controller, and the hydrogen controller controls the on-off of the first solenoid valve 1123, the solenoid cut-off valve 1224 and the second solenoid valve 212 according to the hydrogen pressure to ensure the normal operation of the hydrogen storage system.

[0102] In some embodiments, the concentration detection component is arranged at the mouth of the gas cylinder, the tail of the bottle, the hydrogenation port 201, the pipeline connection or / and other key parts. Preferably, a concentration detection unit is arranged on both sides of the bottle mouth and the tail of the upper end of the entire hydrogen storage system, and the concentration detection unit is used to monitor the leakage in the hydrogen storage system in real time. Through multi-point monitoring, the accuracy and coverage of leakage detection are improved, and the control of a single gas cylinder 111 is realized, which can avoid the impact of single-point failure on the entire system. Even if there is a problem in a certain part, other parts can still work normally, ensuring the stability and reliability of the hydrogen storage system. Since the weight of hydrogen is lower than that of air, the leaked gas goes upward, so the leakage detection is set at the top to accurately detect the position prone to leakage.

[0103] In some embodiments, the concentration detection component includes a first concentration detection component and a second concentration detection component; the first concentration detection component is used to detect first hydrogen leakage information of the hydrogen storage and hydrogen supply component; the second concentration detection component is used to detect second hydrogen leakage information of the hydrogenation component. By providing the first concentration detection component and the second concentration detection component, the hydrogen leakage concentration of the hydrogen storage and hydrogen supply component and the hydrogenation component can be detected at the same time, further improving the safety of the hydrogen storage system.

[0104] Optionally, when the first hydrogen leakage information is not within the first hydrogen leakage concentration threshold range, the valves of the hydrogen storage and supply components may be closed to stop delivering hydrogen to the fuel cell.

[0105] It can be understood that the first hydrogen leakage concentration threshold range refers to a range value formed by the maximum first hydrogen leakage concentration threshold and the minimum first hydrogen leakage concentration threshold. The maximum first hydrogen leakage concentration threshold and the minimum first hydrogen leakage concentration threshold can be preset in the control system in advance.

[0106] Optionally, when the second hydrogen leakage information is not within the second hydrogen leakage concentration threshold range, each valve of the hydrogenation component may be closed to stop supplying hydrogen to the fuel cell.

[0107] It can be understood that the second hydrogen leakage concentration threshold range refers to a range value formed by the maximum second hydrogen leakage concentration threshold and the minimum second hydrogen leakage concentration threshold. The maximum second hydrogen leakage concentration threshold and the minimum second hydrogen leakage concentration threshold can be preset in the control system in advance.

[0108] Further, the first concentration detection component includes a first leakage detector 331, a second leakage detector 332 and a third leakage detector 333; the second concentration detection component includes a fourth leakage detector 334;

[0109] Among them, the first leakage detector 331 is used to detect the first leakage concentration at the gas outlet of the gas cylinder 111 of the gas cylinder assembly 110; the second leakage detector 332 is used to detect the second leakage concentration of the hydrogen supply pipeline; the third leakage detector 333 is used to detect the third leakage concentration at the gas outlet of the first pressure reducing assembly 120; the fourth leakage detector 334 is used to detect the fourth leakage concentration of the hydrogen filling port 201. The first hydrogen leakage information includes the first leakage concentration, the second leakage concentration and the third leakage concentration; the second hydrogen leakage information includes the fourth leakage concentration. In some embodiments, the on-off of the first solenoid valve 1123, the solenoid shut-off valve 1224 and the third solenoid valve can be manually adjusted according to the hydrogen leakage information to ensure the normal operation of the hydrogen storage system. In some other embodiments, the concentration detection assembly is electrically connected to the hydrogen controller, and the hydrogen controller can control the on-off of the first solenoid valve 1123, the solenoid shut-off valve 1224 and the third solenoid valve according to the hydrogen leakage information to ensure the normal operation of the hydrogen storage system.

[0110] Specifically, the outlet end of each pressure reducing pipeline 121 is provided with a second pressure sensor 322 and a third leakage detector 333. The second pressure sensor 322 is used to detect the second pressure at the connection between the first pressure reducing pipeline 121 and the second pressure reducing assembly 130, and the third leakage detector 333 is used to detect the third leakage concentration at the connection between the first pressure reducing pipeline 121 and the second pressure reducing assembly 130.

[0111] In some embodiments, the temperature detection component 310, the pressure detection component and the concentration detection component send the first temperature, hydrogen pressure and hydrogen leakage concentration of the hydrogen storage system to the standard communication interface and the vehicle controller in real time. When the hydrogen refueling component receives hydrogen from the hydrogen refueling station, the standard communication interface can be connected to the hydrogen refueling station signal receiver to transmit the temperature and pressure changes of the hydrogen during the filling process to the gas dispenser, which can more accurately control the filling rate and temperature compensation to avoid excessive temperature rise that damages the gas cylinder and ensure sufficient filling. The temperature and pressure signals transmitted to the vehicle controller can help monitor the consumption of hydrogen on board the vehicle to remind the driver to refuel in time.

[0112] In some embodiments, the hydrogen controller is also connected to the cloud platform to upload the hydrogen parameters detected by the detection components to the cloud platform. Through cloud data analysis, the current status of the hydrogen storage system is determined, the fault condition is determined and analyzed, and the hydrogen storage system can determine the fault by itself and use the system program to handle it by itself.

[0113] In some embodiments, the hydrogen storage system further includes a display component; the display component is electrically connected to the hydrogen controller, and the display component is used to display hydrogen parameters. By setting the display component, the hydrogen parameters of the hydrogen storage system can be remotely viewed.

[0114] Specifically, the hydrogen parameters of the hydrogen storage system can be viewed remotely through the display component. Based on the data system, the status of the hydrogen storage system can be judged, and the status and fault conditions of the hydrogen storage system can be viewed. The opening and closing of the bottle valve of the hydrogen storage system can be controlled by manual operation, thereby realizing remote operation. At the same time, the faults that the system cannot judge can be manually handled based on manual judgment, so as to temporarily solve the faults and realize temporary hydrogen supply for the whole vehicle.

[0115] A specific embodiment of the second aspect of the utility model provides a vehicle, which includes a vehicle body and a hydrogen storage system of any one of the above embodiments; the hydrogen storage system is connected to the vehicle body.

[0116] Since the vehicle of this embodiment includes the above-mentioned hydrogen storage system, it has at least the above-mentioned advantages.

[0117] Optionally, the vehicle is a fuel cell vehicle.

[0118] In some embodiments, the vehicle body includes a vehicle body, and the gas cylinder 111 is connected to the vehicle body.

[0119] In some embodiments, the vehicle body also includes a fuel cell system controller (FCU) and a vehicle controller (VCU); the hydrogen controller exchanges CAN communication data with the FCU and the VCU, and the FCU is connected to the instrument panel via the CAN bus to transmit the alarm information to the instrument panel and display it on the instrument panel. The hydrogen controller controls the on and off of each solenoid valve in the hydrogen storage system by detecting the hydrogen parameters detected by the detection component to meet the gas supply requirements of the vehicle.

[0120] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model 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 various embodiments of the utility model.

Claims

1. A hydrogen storage system, characterized in that: It includes a hydrogen storage and supply component, and the hydrogen storage and supply component includes: At least two gas cylinder assemblies (110) for storing and outputting high-pressure hydrogen; a first decompression assembly (120), corresponding one-to-one to the gas cylinder assembly (110), the gas inlet of the first decompression assembly (120) being in communication with the gas outlet of the corresponding gas cylinder assembly (110), and the first decompression assembly (120) being used to decompress the high-pressure hydrogen; A hydrogen supply pipeline, wherein the air inlet of the hydrogen supply pipeline is connected to the air outlets of all the first pressure reducing components (120), and the air outlet of the hydrogen supply pipeline is used to be connected to the fuel cell.

2. The hydrogen storage system according to claim 1, characterized in that: The hydrogen storage and supply component also includes: A second decompression assembly (130), wherein the air inlet of the second decompression assembly (130) is connected to the air outlets of all the first decompression assemblies (120), and the air outlet of the second decompression assembly (130) is connected to the air inlet of the hydrogen supply pipeline, and the second decompression assembly (130) is used to reduce the pressure of the high-pressure hydrogen again.

3. The hydrogen storage system according to claim 2, characterized in that: The first pressure reducing assembly (120) comprises: A decompression pipeline (121), wherein the decompression pipeline (121) corresponds to the gas cylinder assembly (110) on a one-to-one basis, and the air inlet of the decompression pipeline (121) is communicated with the air outlet of the corresponding gas cylinder assembly (110); and the air outlet of the decompression pipeline (121) is communicated with the air inlet of the second decompression assembly (130); The first pressure reducing valve (122) is arranged on the pressure reducing pipeline (121) and is used to reduce the pressure of the high-pressure hydrogen.

4. The hydrogen storage system according to claim 3, characterized in that: The second pressure reducing assembly (130) comprises: A second pressure reducing valve (131), wherein an air inlet of the second pressure reducing valve (131) is connected to air outlets of all the pressure reducing pipelines (121); A second safety valve (132), wherein the air inlet of the second safety valve (132) is communicated with the air outlet of the second pressure reducing valve (131), and the air outlet of the second safety valve (132) is communicated with the air inlet of the hydrogen supply pipeline.

5. The hydrogen storage system according to any one of claims 1 to 4, characterized in that: Also includes: A hydrogenation component, the hydrogenation component is used to be detachably connected to the hydrogenation device through the hydrogenation port (201), the gas outlet of the hydrogenation component is connected between the gas cylinder assembly (110) and the first pressure reducing assembly (120), and is used to hydrogenate the gas cylinder assembly (110).

6. The hydrogen storage system according to claim 5, characterized in that: The hydrogenation component comprises: a first hydrogenation assembly (210), the first hydrogenation assembly (210) being used to be detachably connected to the hydrogenation device through the hydrogenation port (201); A second hydrogenation assembly (220), wherein the second hydrogenation assembly (220) corresponds one-to-one to the gas cylinder assembly (110); the gas outlet of the first hydrogenation assembly (210) is connected to the gas inlets of all the second hydrogenation assemblies (220); the gas outlet of the second hydrogenation assembly (220) is connected between the gas cylinder assembly (110) and the first pressure reducing assembly (120) for hydrogenating the corresponding gas cylinder assembly (110).

7. The hydrogen storage system according to claim 6, characterized in that: Also included is a detection component, the detection component comprising: A temperature detection component (310) for detecting a first temperature of the high-pressure hydrogen in the gas cylinder component (110); A pressure detection component, used to detect the pressure information of the hydrogen storage and supply component and / or the hydrogenation component; or / and; The concentration detection component is used to detect the hydrogen leakage information of the hydrogen storage and supply component and / or the hydrogenation component.

8. The hydrogen storage system according to claim 7, characterized in that: The pressure detection component comprises: A first pressure detection member, used for detecting first pressure information of the hydrogen storage and supply component; The second pressure detection component is used to detect the second pressure information of the hydrogenation component.

9. The hydrogen storage system according to claim 7, characterized in that: The concentration detection component comprises: A first concentration detection component, used to detect first hydrogen leakage information of the hydrogen storage and supply component; The second concentration detection component is used to detect second hydrogen leakage information of the hydrogenation component.

10. A vehicle, characterized in that: It comprises a vehicle body, and the hydrogen storage system according to any one of claims 1 to 9; the hydrogen storage system is connected to the vehicle body.

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