Gas cylinder fixing device, hydrogen storage system and vehicle

Abstract

The invention relates to a gas cylinder fixing device, a hydrogen storage system and a vehicle. The gas cylinder fixing device comprises a fixing base, a reel device, a binding belt and a sensor. The fixed seat is provided with a containing part for placing a gas bottle; the reel device is connected to the fixing base and located on one side of the containing part. The binding belt comprises a connecting end and a winding end which are oppositely arranged, the winding end is wound on the reel device in a releasable mode, the connecting end is movably connected to the other side of the containing part of the fixing base, and the binding belt and the containing part jointly fix the gas cylinder; the sensor is arranged on the binding belt and used for detecting the pressing force between the gas cylinder and the binding belt, so that the reel device can contract or release the binding belt. According to the gas cylinder fixing device, the gas cylinder can be reliably fixed, the assembling efficiency can be effectively improved, and the assembling and labor cost is reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of gas cylinder fixing, and in particular, to a gas cylinder fixing device, a hydrogen storage system and a vehicle. Background Art

[0002] As a clean energy vehicle, a hydrogen fuel vehicle can effectively reduce the dependence on traditional fuel and reduce greenhouse gas emissions, thus helping to alleviate environmental pollution and climate change problems. At the same time, the development of hydrogen fuel vehicles can also promote the innovation of hydrogen energy technology and industrial upgrading, and promote the sustainable development of the economic society. As one of the core modules of a hydrogen fuel vehicle, an on-vehicle hydrogen system provides hydrogen with a stable pressure for a fuel cell vehicle, thereby supporting the efficient operation of the fuel cell system.

[0003] Generally, a gas cylinder achieves the corresponding fixing purpose through a gas cylinder saddle. The traditional method of fixing a gas cylinder is as follows: A strap is welded to the gas cylinder saddle. After the gas cylinder is placed on the gas cylinder saddle, the strap is wound around the gas cylinder for one week, and the two ends of the strap are fixed by bolts to finally achieve the purpose of fixing the gas cylinder. The traditional method cannot ensure that while meeting the fixing strength requirements of the gas cylinder and its accessories, it can adapt to the radial expansion and contraction of the gas cylinder. Seriously, it may cause the strap to break during use, seriously endangering safety. In response to this, further improvement and adjustment have been made. The strap is fixed to the gas cylinder saddle through a spring and a bolt. In this way, when the gas cylinder undergoes radial expansion and contraction during use, the spring can undergo a certain elastic deformation to compensate for the radial expansion and contraction of the gas cylinder, avoiding the problem of fixing failure due to strap breakage. However, there are radial dimensional errors in the gas cylinder itself, and there are also errors in the deformation of the rubber pad provided on the inner side of the strap. All these make the elastic deformation of the spring not sufficient to be directly converted into the tightening torque of the bottom bolt, which results in that workers cannot perform assembly on the assembly line during actual batch assembly, and can only perform debugging and assembly offline, greatly reducing the assembly efficiency and increasing the assembly and labor costs. Summary of the Invention

[0004] The purpose of the present disclosure is to provide a gas cylinder fixing device, a hydrogen storage system and a vehicle to ensure the reliability of the gas cylinder when it is fixed by the gas cylinder saddle, and can effectively improve the assembly efficiency, reduce the assembly and labor costs, so as to solve at least part of the related technical problems.

[0005] To achieve the above purpose, according to the first aspect of the present disclosure, a gas cylinder fixing device is provided. The gas cylinder fixing device includes: A fixed seat having a receiving portion for placing the gas cylinder; A reel connected to the fixed seat and located on one side of the receiving portion; The binding strap includes a connection end and a winding end which are oppositely arranged. The winding end is releasably wound around the reel. The connection end is movably connected to the other side of the accommodating part of the fixed seat. The binding strap and the accommodating part jointly fix the gas cylinder; and A sensor is arranged on the binding strap and is used to detect the pressing force between the gas cylinder and the binding strap, so that the reel can contract or release the binding strap.

[0006] Optionally, the reel includes a driving motor and a rotating shaft connected to the driving motor. The winding end of the binding strap is wound around the rotating shaft. The rotating shaft can rotate under the drive of the driving motor to contract or release the binding strap.

[0007] Optionally, the reel further includes a locking structure. The locking structure includes a driving member and a locking member. The driving member drives the locking member to engage with the rotating shaft to lock the rotation of the rotating shaft; the driving member drives the locking member to separate from the rotating shaft so that the rotating shaft can rotate.

[0008] Optionally, the reel further includes a ratchet sleeved on the rotating shaft. The locking member includes a baffle. The baffle is clamped with the ratchet to lock the rotation of the rotating shaft through the ratchet; the baffle is separated from the ratchet to enable the rotating shaft to rotate through the ratchet.

[0009] Optionally, the driving member drives the locking member to be clamped or separated from the ratchet by moving or rotating.

[0010] Optionally, the driving member includes an electromagnet. The locking member further includes a pendulum connected to the baffle. After the electromagnet is energized, it can adsorb the pendulum to drive the baffle to rotate and be clamped to the ratchet; after the electromagnet is powered off, it can release the pendulum to drive the locking plate to rotate and separate from the ratchet; or The driving member includes a linear driving member. The linear driving member is connected to the baffle, and the linear driving member drives the baffle to reciprocate to be clamped to the ratchet or separated from the ratchet.

[0011] Optionally, one of a buckle and a bolt is arranged at the connection end of the binding strap, and the other of the buckle and the bolt is arranged on the fixed seat.

[0012] Optionally, the gas cylinder fixing device further includes a controller. The controller is signal-connected to the sensor, the driving motor and the driving member.

[0013] According to a second aspect of the present disclosure, a hydrogen storage system is provided. The hydrogen storage system includes a gas cylinder and the above-described gas cylinder fixing device, and the gas cylinder is installed in the gas cylinder fixing device.

[0014] According to a third aspect of the present disclosure, a vehicle is provided. The vehicle includes the above-described gas cylinder fixing device or the above-described hydrogen storage system.

[0015] Through the above technical solutions, namely, the gas cylinder fixing device, the hydrogen storage system and the vehicle. Among them, when the gas cylinder fixing device is in use, the sensor can accurately detect the pressing force between the gas cylinder and the binding strap. In this way, when the gas cylinder expands during hydrogen filling, for example, the sensor can detect that the value of the pressing force between the gas cylinder and the binding strap increases, so as to control the reel to release the binding strap to avoid the fixing failure caused by the breakage of the binding strap. Correspondingly, when the gas cylinder contracts during hydrogen release, for example, the sensor can detect that the value of the pressing force between the gas cylinder and the binding strap decreases, so as to control the reel to contract the binding strap to avoid the problem of excessive gap between the binding strap and the gas cylinder and insecure fixing.

[0016] For the gas cylinder fixing device provided by the present disclosure, the winding end of the binding strap is releasably wound around the reel, and the reel can adaptively adjust the release length of the binding strap according to the pressing force value detected by the sensor to ensure the reliability when the gas cylinder is fixed by the gas cylinder saddle. Further, the connecting end of the binding strap is movably connected to the fixing seat, which can effectively improve the assembly efficiency of the gas cylinder and reduce the assembly and labor costs.

[0017] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings are used to provide a further understanding of the present disclosure, and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings: Figure 1 is a schematic structural diagram of a gas cylinder fixing device provided by some embodiments of the present disclosure; Figure 2 is Figure 1 an enlarged schematic view of part I in Figure 3 is an assembly schematic diagram of a gas cylinder and a gas cylinder fixing device provided by some embodiments of the present disclosure Figure 1 ; Figure 4 is an assembly schematic diagram of a gas cylinder and a gas cylinder fixing device provided by some embodiments of the present disclosure Figure 2 ; Figure 5 is a schematic diagram of a locking member in a locking structure when it is locked provided by some embodiments of the present disclosure; Figure 6 It is a schematic diagram when the locking member is unlocked in the locking structure provided according to some embodiments of the present disclosure; Figure 7 It is a schematic diagram when the locking member is locked in the locking structure provided according to some other embodiments of the present disclosure; Figure 8 It is a schematic diagram when the locking member is locked in the locking structure provided according to some other embodiments of the present disclosure; Figure 9 It is a schematic structural diagram of a locking member provided according to some embodiments of the present disclosure; Figure 10 It is another schematic structural diagram of a locking member provided according to some embodiments of the present disclosure.

[0019] Explanation of reference numerals 100, gas cylinder fixing device; 1, fixing base; 11, accommodating part; 2, reel; 21, driving motor; 22, rotating shaft; 23, ratchet; 3, binding strap; 31, connecting end; 32, winding end; 33, bolt; 4, sensor; 5, locking structure; 51, driving member; 511, electromagnet; 512, linear driving member; 52, locking member; 521, pendulum; 522, baffle; 523, connecting rod; 524, partition; 6, mounting shell; 7, mounting bracket; 71, buckle; 71a, mounting part; 72, mounting rod; 73, mounting hole; 8, fastener; 200, gas cylinder. Detailed description of the specific implementation

[0020] The following will describe in detail the specific implementation of the present disclosure with reference to the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0021] In the present disclosure, unless otherwise stated, the orientation words such as "upper, lower, left, right" usually refer to the position of the user during use; "inside, outside" refer to the inside and outside of the contour of the corresponding component; in addition, it should be noted that the terms such as "first, second" are used to distinguish one element from another element.

[0022] According to the first embodiment of the present disclosure, as Figures 1 - 9As shown, a gas cylinder fixing device 100 is provided. The gas cylinder fixing device 100 may include a fixing base 1, a reel 2, a lashing strap 3, and a sensor 4. The fixing base 1 has a receiving portion 11 for placing the gas cylinder 200. The reel 2 is connected to the fixing base 1 and is located on one side of the receiving portion 11. The lashing strap 3 may include a connecting end 31 and a winding end 32 which are oppositely arranged. The winding end 32 is releasably wound around the reel 2, and the connecting end 31 is movably connected to the other side of the receiving portion 11 of the fixing base 1. The lashing strap 3 and the receiving portion 11 jointly fix the gas cylinder 200. The sensor 4 is disposed on the lashing strap 3 and is used to detect the pressing force between the gas cylinder 200 and the lashing strap 3, so that the reel 2 can contract or release the lashing strap 3.

[0023] When the gas cylinder fixing device 100 provided by the present disclosure is in use, the sensor 4 can accurately detect the pressing force between the gas cylinder 200 and the lashing strap 3. In this way, when the gas cylinder 200 expands during hydrogen filling, for example, the sensor 4 can detect an increase in the value of the pressing force between the gas cylinder 200 and the lashing strap 3 to control the reel 2 to release the lashing strap 3 and avoid the fixing failure caused by the breakage of the lashing strap 3. Correspondingly, when the gas cylinder 200 contracts during hydrogen release, for example, the sensor 4 can detect a decrease in the value of the pressing force between the gas cylinder 200 and the lashing strap 3 to control the reel 2 to contract the lashing strap 3 and avoid the problem of excessive gap between the lashing strap 3 and the gas cylinder 200 and insecure fixing.

[0024] In the technology provided by the present disclosure, the winding end 32 of the lashing is releasably wound around the reel 2, and the reel 2 can adaptively adjust the release length of the lashing strap 3 according to the value of the pressing force detected by the sensor 4 to ensure the reliability when the gas cylinder 200 is fixed by the saddle of the gas cylinder 200. Further, the connecting end 31 of the lashing strap 3 is movably connected to the fixing base 1, which can effectively improve the assembly efficiency of the gas cylinder 200 and reduce the assembly and labor costs.

[0025] Here, it should be noted that regarding the specific implementation manner in which the sensor 4 is disposed on the lashing strap 3, it may be, as in this embodiment (refer to Figure 1 ) that the sensor 4 is snap-connected to the lashing strap 3 so that the detection head of the sensor 4 is located between the lashing strap 3 and the gas cylinder 200. Alternatively, the sensor 4 may also be directly embedded inside the lashing strap 3. The connection manner between the sensor 4 and the lashing strap 3 is not limited herein, and those skilled in the art can design and adjust according to the actual situation. Further, the sensor 4 may be a piezoelectric pressure sensor, a piezoresistive pressure sensor, a capacitive pressure sensor, etc., which is not limited herein, and those skilled in the art can design and select according to the actual situation.

[0026] In some embodiments, such as Figures 5 - 8As shown, the winder 2 may include a drive motor 21 and a rotating shaft 22 connected to the drive motor 21. The winding end 32 of the binding strap 3 is wound around the rotating shaft 22, and the rotating shaft 22 can rotate driven by the drive motor 21 to contract or release the binding strap 3. The drive motor 21 can drive the rotating shaft 22 to rotate so that the binding strap 3 wound around the rotating shaft 22 can be reliably released or contracted. The design of the drive motor 21 improves the reliability, timeliness and convenience when adjusting the release length of the binding strap 3.

[0027] In some embodiments, as Figures 5 - 8 shown, the winder 2 may further include a locking structure 5. The locking structure 5 may include a driving member 51 and a locking member 52. In use, the driving member 51 can drive the locking member 52 to engage with the rotating shaft 22 to lock the rotation of the rotating shaft 22; the driving member 51 can drive the locking member 52 to separate from the rotating shaft 22 so that the rotating shaft 22 can rotate. The locking structure 5 can cooperate reliably with the drive motor 21 to realize reliable fixation after the binding strap 3 is released or contracted, so that the rotating shaft 22 can control the release length of the binding strap 3 to be fixed at the current position to realize reliable fixation of the gas cylinder 200.

[0028] In some embodiments, as Figures 5 - 8 shown, the winder 2 may further include a ratchet 23 sleeved on the rotating shaft 22. The locking member 52 may include a baffle 522. In use, the baffle 522 is clamped with the ratchet 23 to lock the rotation of the rotating shaft 22 through the ratchet 23; the baffle 522 is separated from the ratchet 23 to enable the rotating shaft 22 to rotate through the ratchet 23. The ratchet 23 sleeved on the rotating shaft 22 provides a relatively reliable locking and mating position for the locking member 52, and can realize reliable control of the rotation of the rotating shaft 22 through the cooperation between the ratchet 23 and the baffle 522 without occupying the winding space of the rotating shaft 22 itself.

[0029] In some embodiments, the driving member 51 drives the locking member 52 to be clamped or separated from the ratchet 23 by moving or rotating. In some use scenarios, such as Figure 7 and 8 shown, the driving member 51 drives the locking member 52 to cooperate with the ratchet 23 by moving. In use, the driving member 51 can drive the locking member 52 to move in the direction indicated by A until the locking member 52 engages with the ratchet 23 to lock the rotation of the rotating shaft 22. Correspondingly, the driving member 51 can drive the locking member 52 to move in the direction indicated by B until the locking member 52 is separated from the ratchet 23 to unlock the rotation of the rotating shaft 22. In still other use scenarios, such as Figure 5 and 6As shown, the driving member 51 drives the locking member 52 to cooperate with the ratchet wheel 23 by rotation. During use, the driving member 51 can drive the locking member 52 to rotate in the direction indicated by Y until the locking member 52 engages with the ratchet wheel 23 to lock the rotation of the rotating shaft 22. Correspondingly, the driving member 51 can drive the locking member 52 to rotate in the direction indicated by X until the locking member 52 separates from the ratchet wheel 23 to unlock the rotation of the rotating shaft 22.

[0030] To enable those skilled in the art to better understand the locking solution of the locking structure 5 provided in this application, the following will respectively take the solution where the driving member 51 drives the locking member 52 to cooperate with the ratchet wheel 23 by rotation and the solution where the driving member 51 drives the locking member 52 to cooperate with the ratchet wheel 23 by movement as examples, and elaborate in detail on the locking process of the locking structure 5: In some embodiments, the driving member 51 can drive the locking member 52 to cooperate with the ratchet wheel 23 by rotation. Specifically, the driving member 51 can include an electromagnet 511. The locking member 52 can further include a pendulum 521 connected to a baffle 522. During use, as Figure 5 shown, after the electromagnet 511 is energized, it can adsorb the pendulum 521 to drive the baffle 522 to rotate (refer to the direction indicated by the arrow Y in Figure 5 or Figure 6 ) and be clamped to the ratchet wheel 23 to lock the rotation of the rotating shaft 22; as Figure 6 shown, after the electromagnet 511 is de-energized, it can release the pendulum 521 to drive the baffle 522 to rotate (refer to the direction indicated by the arrow X in Figure 5 or Figure 6 ) to separate from the ratchet wheel 23 to unlock the rotation of the rotating shaft 22.

[0031] In some embodiments, as Figure 9 shown, the locking member 52 can further include a connecting rod 523 connected between the pendulum 521 and the baffle 522 and a partition 524 sleeved on the connecting rod 523. The setting of the partition 524 here can avoid electromagnetic interference between the pendulum 521 and the baffle 522 to ensure that the pendulum 521 can reliably drive the baffle 522 to rotate under the adsorption or release action of the electromagnet 511.

[0032] In some embodiments, the driving member 51 can drive the locking member 52 to cooperate with the ratchet wheel 23 by movement. Specifically, as Figure 10 shown, the driving member 51 can include a linear driving member 512. The linear driving member 512 is connected to the baffle 522. The linear driving member 512 drives the baffle 522 to reciprocate to be clamped to the ratchet wheel 23 or separate from the ratchet wheel 23. During use, as Figure 7 shown, the linear driving member 512 can drive the baffle 522 to move upward (refer to Figure 7 or Figure 8in the direction pointed by arrow A) and snap onto the ratchet wheel 23 to lock the rotation of the rotating shaft 22; as Figure 8 shown, the linear drive member 512 can drive the baffle 522 to move downward (refer to Figure 7 or Figure 8 the direction pointed by arrow B in ) to separate from the ratchet wheel 23 to unlock the rotation of the rotating shaft 22.

[0033] In summary, the drive member 51 can be the electromagnet 511 or the linear drive member 512, where the linear drive member 512 can be a linear motor, a motor, a hydraulic cylinder, etc. The motor can drive the baffle to move linearly back and forth through, for example, a rack and pinion transmission structure, which is not limited here. Those skilled in the art can design and adjust according to the actual situation as long as it can drive the locking member 52 to move or rotate to unlock or lock the rotation of the rotating shaft 22.

[0034] In some embodiments, as Figure 2 shown, the gas cylinder fixing device 100 can further include a mounting shell 6. The mounting shell 6 is connected to the fixing base 1. The reel 2 is arranged in the mounting shell 6. The setting of the mounting shell 6 provides relatively reliable protection for structures such as the drive motor 21, the rotating shaft 22, the drive member 51, the locking member 52, and the ratchet wheel 23 of the reel 2, avoiding the various structural components of the reel 2 being exposed to the external environment and being damaged, and improving the service life of the gas cylinder fixing device 100. Of course, it should be further noted here that the specific installation positions of the various components of the reel 2 in the mounting shell 6 are not limited here. Those skilled in the art can design and adjust according to the actual situation. Generally, the drive motor 21 and the drive member 51 need to be fixed on the inner wall surface of the mounting shell 6 to achieve their corresponding drive functions.

[0035] In some embodiments, as Figure 2 、 Figure 3 and Figure 4 shown, one of the buckle 71 and the bolt 33 is provided at the connecting end 31 of the binding strap 3, and the other of the buckle 71 and the bolt 33 is provided on the fixing base 1. The connecting end 31 of the binding strap 3 is movably connected to the fixing base 1 by inserting the bolt 33 into the buckle 71. This connection method has low cost, reliable connection, and high assembly efficiency. Of course, it can be understood that the connecting end 31 of the binding strap 3 can also be movably connected to the fixing base 1 by other suitable methods, such as bolt connection, snap connection, etc., which are not limited here. Those skilled in the art can design and adjust according to the actual situation.

[0036] In some embodiments, as Figure 2As shown, the gas cylinder fixing device 100 may further include a mounting bracket 7. The mounting bracket 7 is connected to the fixing base 1. The mounting bracket 7 has a mounting portion 71a. The mounting portion 71a is configured as a mounting hole 73. The bottom of the bolt 33 or the buckle 71 is inserted into the mounting hole 73 through the mounting rod 72 and fixed by a fastener 8. The bolt 33 or the buckle 71 can be connected to the fixing base 1 through the mounting bracket 7, the mounting rod 72 and the fastener 8. This connection method is simple, reliable, and convenient for replacing or repairing the bolt 33 or the buckle 71. Of course, it can be understood that the bolt 33 or the buckle 71 can also be welded to the fixing base 1 directly. The connection method between the bolt 33 or the buckle 71 and the fixing base 1 is not limited herein, and those skilled in the art can design and adjust according to the actual situation.

[0037] In some embodiments, the gas cylinder fixing device 100 may further include a controller. The controller is signal-connected to the sensor 4, the drive motor 21, and the driving member 51. In this way, when the sensor 4 detects that the pressure value between the gas cylinder 200 and the lashing strap 3 deviates (it can be larger or smaller) from the set pressure value, the sensor 4 can transmit the pressure value to the controller. The controller can first control the driving member 51 to drive the locking member 52 to separate from the rotating shaft 22 according to the pressure value. Further, the controller can control the drive motor 21 to drive the rotating shaft 22 to rotate to release or contract the lashing strap 3. When the sensor 4 detects again that the pressure value between the gas cylinder 200 and the lashing strap 3 returns to the set pressure value, the controller can control the driving member 51 to drive the locking member 52 to engage with the rotating shaft 22 to lock the rotation of the rotating shaft 22, so that the released length of the lashing strap 3 is fixed at the current position.

[0038] It can be understood that the controller here can be understood as a vehicle-mounted controller or a separately provided controller. There is no limitation here, and those skilled in the art can make design choices according to the actual situation.

[0039] According to the second embodiment of the present disclosure, a hydrogen storage system is provided. The hydrogen storage system may include a gas cylinder 200 and the above-mentioned gas cylinder fixing device 100. The gas cylinder 200 is installed in the gas cylinder fixing device 100. The hydrogen storage system formed by fixing the gas cylinder 200 through the gas cylinder fixing device 100 can provide hydrogen energy for the vehicle relatively reliably. The hydrogen storage system can achieve the purpose of stable and reliable hydrogen supply.

[0040] According to the third embodiment of the present disclosure, a vehicle is provided. The vehicle may include the above-mentioned hydrogen storage system. The vehicle including the above-mentioned hydrogen storage system can have relatively high driving safety.

[0041] The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0042] In addition, it should be noted that, in the various specific technical features described in the above specific embodiments, they can be combined in any appropriate manner without conflict. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.

[0043] Furthermore, any combination can be made between various different embodiments of the present disclosure, as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A gas cylinder fixing device, characterized in that: include: A fixing seat having a receiving portion for placing the gas bottle; A reel connected to the fixing seat and located at one side of the accommodation portion; A binding belt, comprising a connecting end and a winding end arranged opposite to each other, wherein the winding end is releasably wound around the reel, and the connecting end is movably connected to the other side of the accommodating portion of the fixing seat, and the binding belt and the accommodating portion jointly fix the gas cylinder; and The sensor is arranged on the binding belt and is used to detect the pressing force between the gas cylinder and the binding belt, so that the reel can retract or release the binding belt.

2. The gas cylinder fixing device according to claim 1, characterized in that: The reel comprises a driving motor and a rotating shaft connected to the driving motor, the winding end of the binding belt is wound around the rotating shaft, and the rotating shaft can be rotated by the driving motor to contract or release the binding belt.

3. The gas cylinder fixing device according to claim 2, characterized in that: The reel further comprises a locking structure, the locking structure comprising a driving member and a locking member, the driving member drives the locking member to engage with the rotating shaft to lock the rotation of the rotating shaft; The driving member drives the locking member to be separated from the rotating shaft so that the rotating shaft can rotate.

4. The gas cylinder fixing device according to claim 3, characterized in that: The reel also includes a ratchet wheel sleeved on the rotating shaft, and the locking member includes a baffle plate, which is engaged with the ratchet wheel to lock the rotation of the rotating shaft; the baffle plate is separated from the ratchet wheel so that the rotating shaft can rotate.

5. The gas cylinder fixing device according to claim 4, characterized in that: The driving member drives the locking member to engage with or disengage from the ratchet wheel by moving or rotating.

6. The gas cylinder fixing device according to claim 5, characterized in that: The driving member includes an electromagnet, and the locking member also includes a pendulum connected to the baffle. When the electromagnet is powered on, it can absorb the pendulum to drive the baffle to rotate and be clamped to the ratchet; when the electromagnet is powered off, it can release the pendulum to drive the baffle to rotate and separate from the ratchet; or The driving member includes a linear driving member connected to the baffle plate, and the linear driving member drives the baffle plate to reciprocate so as to be engaged with the ratchet or separated from the ratchet.

7. The gas cylinder fixing device according to claim 1, characterized in that: The connecting end of the binding belt is provided with one of a buckle and a latch, and the fixing seat is provided with the other of the buckle and the latch.

8. The gas cylinder fixing device according to claim 3, characterized in that: A controller is also included, and the controller signal is connected to the sensor, the drive motor and the drive member.

9. A hydrogen storage system, characterized in that: It comprises a gas cylinder and the gas cylinder fixing device according to any one of claims 1 to 8, wherein the gas cylinder is installed on the gas cylinder fixing device.

10. A vehicle, characterized in that: It comprises the gas cylinder fixing device as described in any one of claims 1 to 8 or the hydrogen storage system as described in claim 9.

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