Gas storage cylinder heating system and vehicle

Abstract

The utility model provides a gas storage cylinder heating system and a vehicle, which belong to the technical field of vehicles, and the gas storage cylinder heating system comprises a gas inlet branch and an exhaust branch which are connected with a fuel cell, and a supercharger which is connected in series with the gas inlet branch. Moreover, the gas inlet branch and the gas exhaust branch are respectively provided with a heating part wound on the gas storage bottle, and the heating part of the gas inlet branch is positioned at the downstream of the supercharger, so that the supercharged gas heats the gas storage bottle. According to the gas storage cylinder heating system, the gas inlet heating part of the gas inlet branch connected with the fuel cell is arranged at the downstream of the supercharger and is wound on the gas storage cylinder, so that heat generated after the inlet gas is compressed by the supercharger can be fully utilized. And meanwhile, waste heat carried in exhaust gas of the fuel cell can be fully utilized, so that the gas storage cylinder can be kept in a proper temperature range.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field, especially a kind of gas cylinder heating system, simultaneously, the utility model also relates to a kind of vehicle with the gas cylinder heating system. BACKGROUND

[0002] At present, to meet the new standard proposed for hydrogen energy vehicle hydrogen storage capacity and driving range, the pressure-bearing capacity of hydrogen storage cylinder has achieved a major breakthrough, and its pressure has jumped from the existing 35MPa to 70MPa. Among them, the working condition environment of high-pressure hydrogen storage cylinder is more severe, and its working temperature needs to be accurately controlled within the range of-40℃ to 85℃ during normal operation.

[0003] During the hydrogen storage cylinder discharging (hydrogen supply) process, the internal gas pressure of the cylinder gradually releases, the gas does work on the outside, the internal energy of the gas itself decreases, and the temperature decreases accordingly. Moreover, the maximum temperature change during discharging will exceed 20℃, and once extreme conditions are encountered, the cylinder temperature may drop below the lower limit of the normal working temperature range. Such drastic temperature fluctuations can easily exceed the normal working temperature range of the exhaust cylinder, which may cause safety hazards such as internal liner brittleness deformation and damage. SUMMARY

[0004] Therefore, the utility model aims to provide a gas cylinder heating system that can effectively prevent the temperature of the gas cylinder from being too low and posing a risk of rupture.

[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0006] A gas cylinder heating system includes an intake branch and an exhaust branch connected to a fuel cell, and a supercharger connected in series to the intake branch.

[0007] In the intake direction of the intake branch, the intake branch has an intake heating portion located downstream of the supercharger, and the intake heating portion is wound around the gas cylinder.

[0008] The exhaust branch has an exhaust heating portion wound around the gas cylinder.

[0009] Further, a tube is wound around the outside of the gas cylinder, and the intake heating portion and the exhaust heating portion are both provided on the tube.

[0010] The intake heating portion and the exhaust heating portion are arranged adjacent to each other in the axial direction of the gas cylinder.

[0011] Further, the cross section of the intake passage in the intake heating portion is in the shape of a long strip, and the length direction of the long strip is arranged in the axial direction of the gas cylinder; and / or,

[0012] The cross section of the exhaust passage in the exhaust heating portion is in a long strip shape, and the length direction of the long strip shape is arranged along the axial direction of the gas cylinder.

[0013] Further, the pipe body is provided with an air inlet spoiler located in the air inlet passage; and / or,

[0014] The pipe body is provided with an exhaust spoiler located in the exhaust passage.

[0015] Further, the air inlet branch includes a first air inlet pipe arranged along an air inlet path and downstream of the air inlet heating portion, and the exhaust branch includes a first exhaust pipe arranged along an exhaust path and upstream of the exhaust heating portion.

[0016] The first air inlet pipe and / or the first exhaust pipe extend outwardly of the pipe body in a direction away from the pipe body.

[0017] Further, the gas cylinder is provided with an air bag, and the cylinder valve of the gas cylinder is provided with an air pipe communicating the air bag and the air inlet branch, and the air bag can be inflated by the gas pressurized by the supercharger through the air pipe.

[0018] Further, the air pipe is provided with a first control valve, and the first control valve is located outside the gas cylinder and is used for controlling the opening and closing of the air pipe.

[0019] Further, the air pipe is provided with a second control valve, and the second control valve is located inside the gas cylinder and is used for controlling the opening and closing between the air pipe and the air bag; and / or,

[0020] The air pipe is provided with an exhaust valve.

[0021] Further, the air pipe includes a first part and a second part which are detachably connected.

[0022] The first control valve and the exhaust valve are arranged on the first part, and the air bag and the second control valve are arranged on the second part.

[0023] Compared with the prior art, the utility model has the following advantages:

[0024] The gas storage bottle heating system, by the air inlet direction along the air inlet branch, the air inlet heating part located downstream of the supercharger is arranged on the air inlet branch, and the air inlet heating part is wound on the gas storage bottle. Therefore, the heat generated after the air inlet is compressed by the supercharger can be fully utilized, on the one hand, the gas temperature entering the fuel cell is suitable, the efficient and stable operation of the fuel cell is ensured, on the other hand, the heat is transferred to the gas storage bottle, the problem of too low temperature of the gas storage bottle in low temperature environment can be effectively solved, thereby the brittle deformation damage of the gas storage bottle inner container in low temperature can be effectively avoided, and the safety hazard is formed.

[0025] In addition, the exhaust heating part of the exhaust branch is wound on the gas storage bottle, the waste heat carried in the fuel cell exhaust can be fully utilized, the heat can be supplemented for the gas storage bottle, the heat preservation and heating effect of the gas storage bottle is further strengthened, the energy utilization rate of the whole system is improved, the additional energy consumption is reduced, and the problem of too low temperature of the gas storage bottle in low temperature environment can be avoided. Moreover, by winding the air inlet heating part and the exhaust heating part on the gas storage bottle respectively, the contact area between the gas storage bottle and the air inlet heating part and the exhaust heating part can be increased, and the heat exchange efficiency can be improved.

[0026] Secondly, the air inlet heating part and the exhaust heating part are arranged on the pipe body, the air inlet and exhaust heating parts can be integrated, and the system is more compact. Compared with the dispersed arrangement, the design of the unified pipe body makes the heat transfer path more regular, reduces the risk of heat leakage caused by the dispersion of components, and makes the heat transfer process more stable and efficient. The air inlet heating part and the exhaust heating part are arranged adjacent to each other in the axial direction of the gas storage bottle, so that the heat carried by the air inlet and the exhaust can quickly interact and supplement each other, and the uniformity of heating of each part of the gas storage bottle can be improved. When the air inlet heat is insufficient, the adjacent exhaust waste heat can make up for it in time; vice versa. This cooperative heating mode further improves the ability of the gas storage bottle to maintain a suitable temperature in complex low temperature conditions, and even in extremely cold weather, the whole vehicle temperature of the gas storage bottle can be guaranteed.

[0027] Furthermore, the cross section of the air inlet channel in the air inlet heating part is in strip shape, and the cross section of the exhaust channel is in strip shape, which can increase the contact area of the air inlet heating part and the exhaust heating part with the gas storage bottle, so that the heat can be quickly conducted between the air inlet heating part and the exhaust heating part and the gas storage bottle, the time difference of heat transfer is reduced, and the gas storage bottle can respond to the temperature change requirement more quickly.

[0028] By setting the air inlet spoiler in the air inlet channel on the pipe body, the heat exchange between the air inlet and the air inlet channel wall can be enhanced, the originally relatively smooth flow state of the air inlet is made turbulent, the collision frequency between the air inlet molecules and the air inlet channel inner wall is increased, the heat carried by the air inlet is more efficiently transferred to the gas storage cylinder, the warming process is accelerated, the gas storage cylinder can quickly reach the ideal working temperature in a low temperature environment, and stable hydrogen supply is ensured. Secondly, the turbulent state of the air inlet can more evenly distribute the heat, avoid local heating differences caused by uneven air flow, and improve the temperature uniformity of the fuel cell air inlet to optimize its working performance.

[0029] By setting the air inlet spoiler in the air inlet channel on the pipe body, the heat exchange between the air inlet and the air inlet channel wall can be enhanced, the originally relatively smooth flow state of the air inlet is made turbulent, the collision frequency between the air inlet molecules and the air inlet channel inner wall is increased, the heat carried by the air inlet is more efficiently transferred to the gas storage cylinder, the warming process is accelerated, the gas storage cylinder can quickly reach the ideal working temperature in a low temperature environment, and stable hydrogen supply is ensured. Secondly, the turbulent state of the air inlet can more evenly distribute the heat, avoid local heating differences caused by uneven air flow, and improve the temperature uniformity of the fuel cell air inlet to optimize its working performance.

[0030] In addition, because the exhaust temperature of the fuel cell is high, but the required air inlet temperature of the fuel cell is low, here, the air inlet branch includes a first air inlet pipe arranged downstream of the air inlet channel along the air inlet path, and the exhaust branch includes a first exhaust pipe arranged upstream of the exhaust channel along the exhaust path. And in the direction away from the pipe body, the first air inlet pipe and / or the first exhaust pipe extend to the outside of the pipe body, thereby building a heat flow isolation space that can effectively block the influence of high exhaust temperature on the air inlet, avoid the air inlet temperature in the first air inlet pipe being too high, ensure the appropriate temperature of the fuel cell air inlet, and maintain its efficient and stable operation.

[0031] By setting the air bag in the gas storage cylinder, and the bottle valve of the gas storage cylinder is provided with a ventilation pipe communicating the air bag and the air inlet branch, the gas pressurized by the pressure booster can inflate the air bag through the ventilation pipe; thus, during the inflation process, the air bag will gradually expand, thereby forming a certain extrusion on the gas in the gas storage cylinder. This extrusion promotes more frequent collisions between hydrogen molecules. According to the principle of thermodynamics, increased molecular collisions will lead to increased internal energy, thereby effectively increasing the temperature of the hydrogen gas and the temperature of the gas storage cylinder.

[0032] At the same time, the air bag can be matched with the air inlet heating part, the exhaust heating part and the pipe body and other structures built around the gas cylinder to form an all-round temperature regulation network with internal and external linkage. Moreover, the external structure controls the input and output of heat to ensure that the gas cylinder as a whole is in a suitable thermal environment; the internal air bag realizes local and accurate temperature rise by extruding hydrogen from a microscopic perspective, and the two closely cooperate to ensure that the gas cylinder is maintained in a good physical state.

[0033] In addition, by setting the first control valve on the breather pipe, when the external environment temperature is low, the first control valve can be selected to be opened, and the gas after being pressurized by the pressure booster can flow along the breather pipe to the inside of the air bag. With the continuous injection of gas, the air bag gradually fills up and starts to extrude the hydrogen in the cylinder, and with the help of the violent collision effect between molecules, the temperature of the hydrogen rises steadily. At the same time, this internal heating structure cooperates with the external heating structure such as the air inlet heating part, the exhaust heating part and the pipe body around the gas cylinder to help maintain the gas cylinder within a suitable range. When no additional air bag heating assistance is needed, the first control valve can be closed to cut off the gas flow path. This setting can not only effectively prevent the air bag from reducing the service life due to overuse, but also prevent the intake gas flow from entering the air bag, thereby improving energy utilization efficiency.

[0034] By setting the second control valve on the breather pipe inside the gas cylinder, the connection between the breather pipe and the air bag can be quickly cut off in the event of an abnormal situation, immediately stopping the gas from flowing further into the air bag, effectively avoiding phenomena such as overinflation of the air bag and abnormal surging of the gas, and improving the safety of the hydrogen storage system. In addition, when maintaining, the first control valve outside the cylinder can be closed first to cut off the external gas source, and then the second control valve can be operated to ensure the absolute stability of the cylinder environment during the operation process, thereby reducing the maintenance difficulty and ensuring the safety of the maintenance personnel.

[0035] In addition, by setting the exhaust valve on the breather pipe, after the air bag is inflated according to the system requirements, fully plays the role of extruding hydrogen to raise the temperature and cooperates with the external heating structure, and the excess gas in the air bag can be smoothly discharged by opening the exhaust valve to maintain the air bag in the best working state. This design can not only effectively avoid the problem of reduced efficiency of the next inflation due to gas residue, but also eliminate potential risks caused by abnormal internal pressure. Moreover, in the event of a vehicle collision or the like, by opening the exhaust valve, the possibly turbulent gas in the breather pipe and the air bag can be quickly discharged outside the cylinder, efficiently reducing the pressure peak in the cylinder, and minimizing the consequences of cylinder rupture and large-scale hydrogen leakage caused by internal high pressure impact, thereby improving the safety performance of the vehicle.

[0036] The vent pipe comprises a first part and a second part which are detachably connected, the first control valve and the exhaust valve are arranged on the first part, and the air bag and the second control valve are arranged on the second part.

[0037] Another purpose of the utility model lies in providing a vehicle, wherein the vehicle is provided with the gas cylinder heating system as described above.

[0038] The vehicle has the gas cylinder heating system as described above, so that the high-temperature intake air downstream of the supercharger and the residual heat carried in the fuel cell exhaust can be fully utilized to supplement the heat of the gas cylinder, and the heat preservation and heating effects of the gas cylinder are further strengthened, which not only prevents the inner liner from being deformed and ruptured due to excessively low temperature of the gas cylinder, but also improves the energy utilization rate of the whole system, reduces additional energy consumption, and is beneficial to guarantee the working performance of the hydrogen energy vehicle under low-temperature working conditions. BRIEF DESCRIPTION OF DRAWINGS

[0039] The accompanying drawings, which form a part of this patent, are included to provide a further understanding of the application and are incorporated herein for illustrative purposes. The embodiments of the application illustrated in the drawings are not meant to be unduly limited nor are they meant to be unduly restrictive. In the drawings:

[0040] Figure 1 A structure schematic view of the gas cylinder heating system according to the embodiments of the utility model;

[0041] Figure 2 A sectional view of the pipe body according to the embodiments of the utility model;

[0042] Figure 3 A schematic view of the bottle valve according to the embodiments of the utility model;

[0043] BRIEF DESCRIPTION OF DRAWINGS

[0044] 1, fuel cell; 2, gas cylinder; 3, supercharger; 4, intake branch; 5, exhaust branch; 6, vent pipe; 7, air bag; 8, bottle valve; 9, exhaust valve; 10, first control valve; 11, pipe body; 12, second control valve;

[0045] 401, first intake pipe; 402, second intake pipe;

[0046] 501, first exhaust pipe; 502, second exhaust pipe;

[0047] 801, valve body;

[0048] 1101, intake passage; 1102, exhaust passage. DETAILED DESCRIPTION

[0049] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0050] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0051] In addition, in the description of the present application, unless otherwise explicitly limited, the terms "mounting", "connection", "connection", "connector" should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood in conjunction with the specific circumstances.

[0052] The present application will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0053] Embodiment one

[0054] The hydrogen storage bottle is an indispensable key component on the hydrogen energy vehicle, which can store a large amount of hydrogen gas in the form of high density under certain pressure conditions, ensure sufficient "fuel" supply during vehicle driving, and provide material basis for continuous operation of the vehicle. During the discharge process of the high-pressure hydrogen storage cylinder, the gas pressure in the cylinder is gradually released, the gas does work to the outside, the internal energy of the gas is reduced, and the temperature is lowered. Moreover, once encountering extreme working conditions, the temperature of the cylinder may drop out of the lower limit range of the normal working temperature, which may cause safety hazards such as brittle deformation and damage of the inner liner.

[0055] Therefore, the present embodiment provides a gas storage cylinder heating system, which comprises an air inlet branch 4 and an air outlet branch 5 connected with a fuel cell 1, and a supercharger 3 connected in series on the air inlet branch 4. And along the air inlet direction of the air inlet branch 4, the air inlet branch 4 has an air inlet heating part located downstream of the supercharger 3, and the air inlet heating part is wound on the gas storage cylinder 2. And the air outlet branch 5 has an air outlet heating part wound on the gas storage cylinder 2. Wherein, the gas storage cylinder 2 mainly refers to the hydrogen storage bottle for storing hydrogen, of course, the following heating system can also be used for heating the air outlet cylinder for storing other gases.

[0056] The gas cylinder heating system of the embodiment is arranged downstream of the supercharger 3 and wrapped around the gas cylinder 2, and can make full use of the heat generated after the compressed air passes through the supercharger 3. On the one hand, the temperature of the air entering the fuel cell 1 is suitable, and the high-efficiency and stable operation of the fuel cell 1 is ensured; on the other hand, the heat is transferred to the gas cylinder 2, effectively solving the problem of excessively low temperature of the gas cylinder 2 in a low-temperature environment, thereby effectively avoiding the brittle deformation and damage of the inner liner of the gas cylinder 2 in a low-temperature environment, and forming a safety hazard.

[0057] Secondly, the exhaust heating part of the exhaust branch 5 is wrapped around the gas cylinder 2, and the waste heat carried by the exhaust gas of the fuel cell 1 can be fully utilized. These waste heat may be directly discharged and wasted, and now can be used twice to supplement the heat of the gas cylinder 2, further strengthening the heat preservation and heating effect of the gas cylinder 2, improving the energy utilization rate of the whole system, reducing the additional energy consumption, and ensuring that the gas cylinder 2 is maintained at a suitable temperature.

[0058] Based on the above overall introduction, one exemplary structure of the gas cylinder heating system of the embodiment is shown in Figure 1 , wherein the fuel cell 1 and the gas cylinder 2 are structures commonly used on vehicles, and the air inlet branch 4 of the embodiment is mainly used to supply external air to the cathode of the fuel cell 1. Therefore, in order to improve the cleanliness of the air, an air filter upstream of the supercharger 3 can also be further arranged on the air inlet branch 4 during specific implementation. In addition, the arrangement of the bottle mouth of the gas cylinder 2 is not limited to the upside-down placement mode shown in Figure 1 , and the upright placement mode with the bottle mouth upward is also feasible.

[0059] As a further embodiment, as shown in Figure 1 , the gas cylinder heating system of the embodiment includes a pipe body 11 wrapped around the gas cylinder 2, and the air inlet heating part and the exhaust heating part are arranged on the pipe body 11. In addition, the air inlet heating part and the exhaust heating part are arranged adjacent to each other in the axial direction of the gas cylinder 2.

[0060] In the embodiment, by arranging the pipe body 11 wrapped around the gas cylinder 2, and arranging the air inlet heating part and the exhaust heating part on the pipe body 11, the integration degree of the system is greatly optimized. Compared with the dispersed arrangement, the design of the unified pipe body 11 makes the heat transfer path more regular, reduces the risk of heat leakage caused by the dispersion of components, makes the whole heating system have better sealing performance, and the heat transfer process is more stable and efficient, and the temperature of the gas cylinder 2 is more accurately controlled.

[0061] In addition, the intake heating part and the exhaust heating part are arranged adjacent to each other in the axial direction of the gas storage cylinder 2, and the heat conduction principle can be fully utilized. The adjacent arrangement can shorten the heat transfer distance, so that the heat carried by the intake and exhaust can be quickly exchanged and supplemented, and the uniformity of heating of each part of the gas storage cylinder 2 can be improved. When the intake heat is insufficient, the adjacent exhaust waste heat can make up for it in time; vice versa. This cooperative and complementary heat supply mode further improves the ability of the gas storage cylinder 2 to maintain a suitable temperature under complex low-temperature working conditions, and guarantees the continuous and reliable operation of the hydrogen supply system of the hydrogen energy vehicle. Even in extremely cold weather, stable hydrogen supply can be ensured.

[0062] At this time, in order to further improve the heating uniformity of the gas storage cylinder 2, as shown in Figure 1 The pipe body 11 starts from the upper part of the gas storage cylinder 2, closely adheres to the bottle body and winds around one circle, fully covers the area, and ensures that the upper part of the bottle body can be uniformly heated. Then, the pipe body 11 winds down along the bottle body of the gas storage cylinder 2 and extends to the lower part of the gas storage cylinder 2, and then unwinds in the lower part. In this way, the pipe body 11 continuously and smoothly surrounds the gas storage cylinder 2 from top to bottom, uniformly transfers heat to each part of the bottle body, and can provide a stable and uniform heat environment for the gas storage cylinder 2, which is beneficial to keeping the gas storage cylinder 2 within a suitable temperature range.

[0063] As a further embodiment, the cross section of the intake passage 1101 in the intake heating part is in the shape of a long strip. At the same time, the cross section of the exhaust passage 1102 in the exhaust heating part is in the shape of a long strip. By designing the cross sections of the intake passage 1101 and the exhaust passage 1102 in the shape of a long strip, compared with the traditional circular or other shaped intake passage 1101, the intake passage 1101 can have a larger intake area. Heat can be quickly conducted between the intake and the gas storage cylinder 2, reducing the time difference of heat transfer, so that the gas storage cylinder 2 can respond more quickly to temperature change requirements. Especially in the working condition of low-temperature start or temperature drop, the temperature of the gas storage cylinder 2 can be quickly raised to prevent the temperature of the gas storage cylinder 2 from being too low, which can cause the inner bag to deform and rupture, thereby improving the safety performance of the vehicle.

[0064] In addition, preferably, the length direction of the cross section of the exhaust passage 1102 and the exhaust passage 1102 extends along the axial direction of the gas storage cylinder 2. By designing in this way, the contact area between the intake passage 1101 and the exhaust passage 1102 and the gas storage cylinder 2 can be further increased, which is beneficial to maintaining the normal working temperature of the gas storage cylinder 2. As a specific embodiment, as shown in Figure 2 The pipe body 11 with a rectangular outer contour is used, and the inside of the pipe body 11 is divided into the exhaust passage 1102 and the intake passage 1101 arranged above and below by a partition. At this time, the intake passage 1101 and the exhaust passage 1102 are both rectangular, and the length direction of the rectangle extends along the axial direction of the gas storage cylinder 2.

[0065] In this embodiment, as a further embodiment, the pipe body 11 is provided with an air inlet spoiler located in the air inlet channel 1101; at the same time, the pipe body 11 is provided with an air outlet spoiler located in the air outlet channel 1102. By setting the air inlet spoiler located in the air inlet channel 1101, the heat exchange between the air inlet and the wall surface of the air inlet channel 1101 can be strengthened. The air inlet spoiler can break the relatively smooth flow state of the air inlet, cause turbulence, increase the collision frequency of the air inlet molecules and the inner wall of the air inlet channel 1101, and make the heat carried by the air inlet be transmitted to the gas storage cylinder 2 more efficiently, accelerate the warming process, ensure that the gas storage cylinder 2 can quickly reach the ideal working temperature in a low-temperature environment, and ensure stable supply of hydrogen.

[0066] The air outlet spoiler located in the air outlet channel 1102 can promote the formation of complex turbulence of the exhaust gas flow in the air outlet channel 1102, prolong the contact time of the exhaust gas and the wall surface of the air outlet channel 1102, and transmit more waste heat to the pipe body 11, and then to the gas storage cylinder 2, continuously supplementing the heat of the gas storage cylinder 2 and maintaining the temperature stability of the gas storage cylinder 2 during the continuous exhaust of the fuel cell 1.

[0067] As a preferred embodiment, in order to facilitate processing and manufacturing, the air inlet spoiler and the air outlet spoiler of the embodiment can respectively be in the form of a straight plate structure. In addition, the air inlet spoiler and the air outlet spoiler are respectively arranged along the axial direction of the air inlet channel 1101 and the air outlet channel 1102. In addition, as a further embodiment, the air inlet spoiler located at the inlet end of the air inlet channel 1101 and the air outlet spoiler located at the inlet end of the gas storage channel can be arranged densely. In this way, the initial smooth state of the gas flow can be quickly broken, and the turbulence can be formed as soon as possible to improve the initial efficiency of heat transfer.

[0068] It should be noted that, in addition to setting the air inlet spoiler and the air outlet spoiler at the same time, the air inlet spoiler can also be arranged only in the air inlet channel 1101, or the air outlet spoiler can be arranged only in the air outlet channel 1102.

[0069] In addition, in view of the fact that the exhaust temperature of the fuel cell 1 is relatively high, and the air inlet needs to be maintained at a relatively low temperature level, for this purpose, as shown in FIG. 6, the air inlet spoiler 1103 and the air outlet spoiler 1104 can be respectively arranged on the air inlet channel 1101 and the air outlet channel 1102. Figure 1As shown, in this embodiment, the intake branch 4 includes a first intake pipe 401 located downstream of the intake channel 1101 along the intake path, and the exhaust branch 5 includes a first exhaust pipe 501 located upstream of the exhaust channel 1102 along the exhaust path. Furthermore, both the first intake pipe 401 and the first exhaust pipe 501 extend outwards from the pipe body 11 in a direction away from the pipe body 11. This creates a thermal isolation space, effectively blocking the influence of high exhaust temperature on the intake air, preventing excessively high intake temperature within the first intake pipe 401, ensuring a suitable intake temperature for the fuel cell 1, and thus maintaining its efficient and stable operation.

[0070] It should be noted that in this embodiment, both the first intake pipe 401 and the first exhaust pipe 501 extend outward from the pipe body 11, which is relative to the arrangement between the intake channel 1101 and the exhaust channel 1102. Specifically, the distance between the first intake pipe 401 and the first exhaust pipe 501 is greater than the distance between the intake channel 1101 and the exhaust channel 1102.

[0071] In addition, such as Figure 1 As shown, the intake branch 4 also includes a second intake pipe 402 located upstream of the intake passage 1101, while the exhaust branch 5 includes a second exhaust pipe 502 located downstream of the exhaust passage 1102. Furthermore, the distance between the second intake pipe 402 and the second exhaust pipe 502 gradually increases in the direction away from the pipe body 11. This arrangement effectively blocks the influence of high exhaust temperature on the intake air, preventing excessively high intake air temperature within the first intake pipe 401, ensuring a suitable intake air temperature for the fuel cell 1, and thus maintaining its efficient and stable operation.

[0072] In addition, as a further implementation method, such as Figure 1 As shown in the diagram, the gas storage cylinder 2 in this embodiment may also be equipped with an air bladder 7. The valve 8 of the gas storage cylinder 2 is equipped with a vent pipe 6 connecting the air bladder 7 and the air inlet branch 4. Gas pressurized by the booster 3 can inflate the air bladder 7 through the vent pipe 6. By providing the air bladder 7, after the booster 3 has pressurized the gas, some of the gas can inflate the air bladder 7 inside the gas storage cylinder 2 through the vent pipe 6. During the inflation process, the air bladder 7 gradually expands, thereby compressing the hydrogen gas inside the gas storage cylinder 2. This compression causes more frequent collisions between hydrogen molecules. According to thermodynamic principles, increased molecular collisions lead to an increase in internal energy, effectively raising the temperature of the hydrogen gas and ensuring that the temperature of the gas storage cylinder 2 remains within a suitable range.

[0073] At the same time, the air bag 7 can be cooperated with the external air inlet heating part, air outlet heating part and pipe body 11 and other structures carefully constructed around the gas cylinder 2 to form a whole temperature regulation structure of internal and external linkage and mutual assistance. The external heating structure can directly heat the gas cylinder 2, and the internal air bag 7 can indirectly ensure the high temperature of the gas storage by heating the hydrogen, so that the temperature of the gas cylinder 2 can be locally and accurately raised by extruding hydrogen from a microscopic point of view. The two closely cooperate to ensure that the temperature of the gas cylinder 2 is within the appropriate range.

[0074] Among them, as shown in Figure 3 The bottle valve 8 can be directly improved on the existing structure, which usually includes a valve body 801 and a valve core arranged in the middle of the valve body 801. In specific implementation, as shown in Figure 3 A through hole is formed on the valve body 801, and the air pipe 6 is inserted into the gas cylinder 2 through the through hole. And a sealing structure needs to be arranged between the air pipe 6 and the valve body 801. As shown in Figure 1 As a further embodiment, the air pipe 6 is provided with a first control valve 10, which is located outside the gas cylinder 2 and is used to control the opening and closing of the air pipe 6.

[0075] The first control valve 10 is arranged on one side, when the pressurized gas is needed to inflate the air bag 7 to realize the extrusion and temperature rise of hydrogen, and the external heating structure is cooperated to ensure the temperature of the gas cylinder 2, the first control valve 10 is opened, and the gas can flow smoothly to the air bag 7 through the air pipe 6. On the other hand, in the case of vehicle maintenance, system maintenance, or special working conditions without the need for air bag 7 inflation assistance, the first control valve 10 is closed to cut off the gas flow in time, prevent unnecessary gas from entering the air bag 7, avoid safety hazards such as imbalance of cylinder pressure caused by over inflation of the air bag 7, and reduce gas waste. Among them, the first control valve 10 can be a ball valve or other conventional valve body.

[0076] It should be noted that in addition to making the air pipe 6 communicate with the air inlet branch 4, the air pipe 6 can also be connected with the air pump to inflate the air bag 7 through the air pump.

[0077] In addition, as shown in Figure 1As shown in the figure, the vent pipe 6 is provided with a second control valve 12, which is located in the gas cylinder 2 and is used to control the opening and closing of the vent pipe 6 and the gas bag 7. In this embodiment, by setting the second control valve 12, when the vehicle is in a low temperature environment, the first control valve 10 outside the cylinder can be opened first to open the channel for the gas to flow into the vent pipe 6 when the gas bag 7 needs to fully mobilize the hydrogen heating assistance. Then, the second control valve 12 in the cylinder closely cooperates to quickly inflate the gas bag 7 and efficiently squeeze the hydrogen, which can maintain the normal temperature of the gas cylinder 2 together with the external heating structure.

[0078] And in special situations, for example, when the vehicle encounters an unexpected collision or strong jolt, the second control valve 12 can quickly respond to quickly cut off the connection between the vent pipe 6 and the gas bag 7, immediately preventing gas from further flowing into the gas bag 7, which can effectively prevent serious consequences such as cylinder rupture and hydrogen leakage caused by over-inflation of the gas bag 7. Furthermore, when repairing, the first control valve 10 outside the cylinder can be closed first to cut off the external gas source, and then the second control valve 12 in the cylinder can be processed, which is beneficial to the safety of the maintenance personnel. Among them, the second control valve 12 can be a butterfly valve or other conventional valve.

[0079] In addition, in order to further improve the use effect, for example, Figure 1 As shown in the figure, the vent pipe 6 can also be provided with an exhaust valve 9. In this embodiment, by setting the exhaust valve 9 on the vent pipe 6, after the gas bag 7 completes inflation according to the system requirements, fully plays the role of squeezing hydrogen to warm up and cooperates with the external heating structure, and then opens the exhaust valve 9, the excess gas in the gas bag 7 can be smoothly discharged, maintaining the gas bag 7 in the best working state. This design not only effectively avoids the problem of reduced inflation efficiency caused by residual gas in the next inflation, but also eliminates potential risks caused by abnormal internal pressure.

[0080] Moreover, when the vehicle encounters a collision or the like, by opening the exhaust valve 9, the gas in the vent pipe 6 and the gas bag 7 that may be turbulent can be quickly discharged outside the cylinder, efficiently reducing the pressure peak in the cylinder, and minimizing the consequences of cylinder rupture and large-scale hydrogen leakage caused by internal high pressure impact, which is beneficial to the safety performance of the vehicle. Among them, the exhaust valve 9 can be a composite exhaust valve 9, which has the characteristics of both the float ball type and the float ball lever type, which can not only slightly exhaust under pressure to maintain the stability of the gas content in the system, but also can realize large-scale exhaust when the system is first filled with water or abnormally large gas, ensuring that the gas in the system is discharged in time, avoiding the situation that the pressure is abnormal due to gas accumulation, affecting the normal operation of the system, thereby ensuring the reliability and stability of the entire gas cylinder heating system.

[0081] In addition, as a preferred embodiment, the ventilation pipe 6 of the embodiment comprises a first part and a second part which are detachably connected. The first control valve 10 and the exhaust valve 9 are arranged on the first part, and the air bag 7 and the second control valve 12 are arranged on the second part. Thus, the maintenance personnel can conveniently separate the first part from the second part of the ventilation pipe 6, so as to facilitate the inspection and replacement of the air bag 7 and the control valve. An external thread can be arranged at the end of the first part of the ventilation pipe 6, and an internal thread is arranged at the corresponding position of the second part. By tightly screwing the threads, the stability of the connection is ensured, and the leakage of hydrogen is effectively prevented. The thread structure has a mature processing technology and a relatively low cost, and when disassembly is required, only a simple tool is needed.

[0082] Based on the above overall description, the booster 3 can be arranged near the hydrogen cylinder with relatively few peripheral parts. Not only can the space in the cabin be effectively released, but also the booster 3 can be connected to the fuel cell 1 after winding around the gas cylinder 2 for several turns through the pipe body 11. In this way, in a low-temperature environment, the high-temperature gas in the pipeline of the booster 3 can transfer heat to the gas cylinder 2, achieving the heating function. At the same time, the temperature of the gas gradually decreases during the process of flowing to the fuel cell 1, which is beneficial to meet the optimal operating condition of the fuel cell 1, so as to possibly omit the intercooler component. Even if the intercooler is retained, its size can be greatly reduced, thereby significantly reducing the cost.

[0083] Furthermore, the exhaust gas discharged from the exhaust branch 5 contains a certain amount of waste heat. The middle part of the exhaust pipe and the intake pipe is integrated into the same pipe body 11, and the inside of the pipe body 11 is divided into an intake passage 1101 and an exhaust passage 1102, which are respectively used for exhaust and intake, and then jointly surround the hydrogen cylinder for several turns. Not only the waste heat of the exhaust gas is fully utilized, but also a compact space layout is achieved. Compared with the traditional double-pipeline design, not only the cost is reduced, but also the hydrogen cylinder can still stably operate in a lower temperature environment by virtue of the cooperation of the two heat sources, i.e., the pipeline of the booster 3 and the exhaust pipeline. Thus, the safety hazards such as brittle deformation and damage of the inner liner of the gas cylinder 2 due to excessively low heat release temperature during hydrogen supply can be effectively avoided.

[0084] Embodiment Two

[0085] The embodiment relates to a vehicle, and the vehicle is provided with the gas cylinder heating system as in the embodiment one.

[0086] The vehicle of the embodiment can utilize the high-temperature intake gas downstream of the booster 3 and the waste heat carried in the exhaust gas of the fuel cell 1 to supplement the heat of the gas cylinder 2, further strengthen the heat preservation and heating effect of the gas cylinder 2, prevent the deformation and rupture of the inner liner due to excessively low temperature of the gas cylinder, and improve the energy utilization rate of the whole system, thereby reducing the additional energy consumption and ensuring the working performance of the hydrogen energy vehicle in a low-temperature working condition.

[0087] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A gas cylinder heating system, characterized in that: it comprises an air inlet branch (4) and an air outlet branch (5) connected with a fuel cell (1), and a supercharger (3) connected in series in the air inlet branch (4) ; along the air inlet direction of the air inlet branch (4), the air inlet branch (4) has an air inlet heating part downstream of the supercharger (3), and the air inlet heating part is wound around a gas cylinder (2) ; the air outlet branch (5) has an air outlet heating part wound around the gas cylinder (2). 2.The gas cylinder heating system according to claim 1, characterized in that: it comprises a pipe body (11) wound around the gas cylinder (2), and the air inlet heating part and the air outlet heating part are arranged on the pipe body (11) ; the air inlet heating part and the air outlet heating part are arranged adjacent in the axial direction of the gas cylinder (2). 3.The gas cylinder heating system according to claim 2, characterized in that: the cross section of an air inlet passage (1101) in the air inlet heating part is in the shape of a long strip, and the length direction of the long strip is arranged along the axial direction of the gas cylinder (2) ; and / or, the cross section of an air outlet passage (1102) in the air outlet heating part is in the shape of a long strip, and the length direction of the long strip is arranged along the axial direction of the gas cylinder (2). 4.The gas cylinder heating system according to claim 3, characterized in that: the pipe body (11) is provided with air inlet turbulence vanes in the air inlet passage (1101) ; and / or, the pipe body (11) is provided with air outlet turbulence vanes in the air outlet passage (1102). 5.The gas cylinder heating system according to claim 2, characterized in that: the air inlet branch (4) comprises a first air inlet pipe (401) arranged downstream of the air inlet heating part along an air inlet path, and the air outlet branch (5) comprises a first air outlet pipe (501) arranged upstream of the air outlet heating part along an air outlet path; the first air inlet pipe (401) and / or the first air outlet pipe (501) extend outward of the pipe body (11) in a direction away from the pipe body (11). 6.The gas cylinder heating system according to any one of claims 1 to 5, characterized in that: the gas cylinder (2) is provided with an air bag (7), and a breather pipe (6) is arranged on a cylinder valve (8) of the gas cylinder (2) to communicate the air bag (7) and the air inlet branch (4), so that the air pressurized by the supercharger (3) can inflate the air bag (7) through the breather pipe (6). 7.The gas cylinder heating system according to claim 6, characterized in that: the breather pipe (6) is provided with a first control valve (10), and the first control valve (10) is arranged outside the gas cylinder (2) and is used to control the opening and closing of the breather pipe (6). 8.The gas cylinder heating system according to claim 7, characterized in that: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The vent pipe (6) is provided with a second control valve (12) located in the gas cylinder (2) and used for controlling the connection and disconnection between the vent pipe (6) and the air bag (7); and / or The vent pipe (6) is provided with an exhaust valve (9).

9. The gas cylinder heating system according to claim 8, characterized in that: The vent pipe (6) comprises a first part and a second part which are detachably connected; The first control valve (10) and the exhaust valve (9) are arranged on the first part, and the air bag (7) and the second control valve (12) are arranged on the second part.

10. A vehicle, characterized in that: The vehicle is provided with the gas cylinder heating system according to any one of claims 1 to 9.

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