Underfloor vehicle hydrogen exchange system

Abstract

The utility model relates to bottom -mounted vehicle hydrogen replacement system, it includes vehicle body, the chassis detachable connection of vehicle body has support frame, a plurality of partition plates are arranged in support frame, the independent cavity of a plurality of adaptation hydrogen cylinder is formed by the partition plate separation, support frame bottom is provided with the tray for supporting hydrogen cylinder, hydrogen cylinder top is provided with the pressing strip for limiting its up and down movement, the bottom of support frame is provided with lifting wheel body, the utility model has efficient hydrogen replacement, stable operation, the effect of safety protection.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle technology, and in particular to a hydrogen swapping system for under-floor vehicles. Background Technology

[0002] With the development of new energy vehicles, hydrogen energy has become an important direction due to its zero emissions and long range, especially suitable for cold chain vehicles, which can meet their needs for environmentally friendly transportation and avoid interruption of goods by refueling; and the under-mounted vehicle hydrogen swapping system can save space in the cold chain vehicle compartment and improve utilization, and is gradually becoming the mainstream form of hydrogen storage module for hydrogen energy cold chain vehicles, which is of great significance for its large-scale popularization.

[0003] Currently, the hydrogen storage modules in existing hydrogen-powered refrigerated vehicles mostly adopt the design of ordinary hydrogen-powered vehicles, generally using a fixed installation structure. Although some adopt a detachable form, the integration is poor, and their interiors usually only have simple brackets to support the hydrogen cylinders, lacking targeted partitioning and limiting mechanisms. At the same time, the movement and positioning of the hydrogen storage module during hydrogen exchange mainly rely on external hoisting equipment.

[0004] The shortcomings of existing technologies are as follows: First, the disassembly and assembly of hydrogen storage modules are cumbersome, making it impossible to quickly replace hydrogen and seriously affecting the efficiency of hydrogen replacement; second, hydrogen cylinders are prone to collisions or movement during vehicle operation due to a lack of effective separation and fixation, posing safety hazards; third, the inconvenience of moving hydrogen storage modules increases the manpower and time costs of hydrogen replacement operations; and fourth, the lack of real-time hydrogen leakage monitoring and early warning functions makes it difficult to detect safety risks in a timely manner. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a bottom-mounted vehicle hydrogen swapping system that offers efficient hydrogen swapping, stable operation, and safety protection.

[0006] The above-mentioned utility model objective is achieved through the following technical solution:

[0007] The under-mounted vehicle hydrogen swapping system includes a vehicle body, the chassis of which is detachably connected to a support frame. The support frame has multiple partitions that divide the space into multiple independent cavities adapted to hydrogen cylinders. The bottom of the support frame has a tray for supporting the hydrogen cylinders. The top of the hydrogen cylinders has pressure strips to restrict their vertical movement. The bottom of the support frame has lifting wheels.

[0008] The above technical solution realizes the bottom placement and overall modularization of the hydrogen storage module. The detachable connection between the support frame and the chassis facilitates rapid hydrogen replacement. The independent cavities, trays and pressure strips inside the module work together to ensure the stable storage of the hydrogen cylinders. The lifting wheels at the bottom make it easier to move the module in and out, thus comprehensively solving the problems of operational convenience and driving stability of bottom-mounted hydrogen replacement.

[0009] As a further technical solution of this utility model: the pressure strip has a U-shaped structure with its U-shaped opening facing downwards, and the inner wall of the pressure strip abuts against the hydrogen cylinder; and the two ends of the pressure strip are respectively threadedly connected to the adjacent partition plate.

[0010] Through the above technical solution, the U-shaped pressure strip can effectively cover and press the top of the hydrogen cylinder from above. The threaded connection between its two ends and the partition plate provides a stable and reliable downward locking force, preventing the hydrogen cylinder from jumping or loosening in the vertical direction when the vehicle is bumpy.

[0011] As a further technical solution of this utility model: a rubber pad is provided on the inner wall of the pressure strip.

[0012] Through the above technical solution, the rubber pad on the inner wall of the pressure strip increases the friction with the surface of the hydrogen cylinder and provides cushioning, which not only enhances the anti-slip effect, but also avoids rigid contact between the pressure strip and the hydrogen cylinder, preventing wear or damage to the cylinder surface.

[0013] As a further technical solution of this utility model: the inner surface of the tray is provided with an anti-slip rubber pad, and the inner surface of the tray is adapted to the outer surface of the hydrogen cylinder.

[0014] Through the above technical solution, the anti-slip rubber pad on the tray surface and its matching shape with the outer surface of the hydrogen cylinder significantly increase the friction and contact area at the bottom of the hydrogen cylinder, effectively limiting the horizontal movement of the hydrogen cylinder and improving its stability when the vehicle is turning or subjected to lateral forces.

[0015] As a further technical solution of this utility model: the lifting wheel body includes a fixed base, universal wheels, and a lifting rod.

[0016] The fixing base is fixedly connected to the bottom of the support frame;

[0017] The caster wheels are mounted on the fixed base;

[0018] The top end of the lifting rod is threadedly connected to the fixed seat, and the bottom end is connected to a support foot.

[0019] Through the above technical solutions, the fixed base can ensure that the lifting wheel body is firmly connected to the bottom of the support frame, preventing the wheel body from falling off; the omnidirectional wheels facilitate the flexible movement of the support frame in hydrogen exchange scenarios, reducing the difficulty of handling; the lifting rod achieves height adjustment through threaded connection, and together with the support feet, it can stably support the support frame on the ground (or hydrogen exchange equipment) during hydrogen exchange, preventing movement and deviation, taking into account both the flexibility of the support frame's movement and the stability of its positioning, and improving the efficiency of hydrogen exchange operation.

[0020] As a further technical solution of this utility model, it also includes a hydrogen leakage monitoring device, which includes a hydrogen concentration sensor installed in a support frame and an audible and visual alarm installed in the driver's cab. The hydrogen concentration sensor is electrically connected to the audible and visual alarm.

[0021] The above technical solutions constitute a complete active safety protection system. The hydrogen concentration sensor can monitor the hydrogen concentration inside the hydrogen storage module in real time. In the event of a leak, it can immediately issue a warning to the driver through an audible and visual alarm, thereby achieving early detection and warning of safety risks and greatly improving the safety and reliability of the system.

[0022] As a further technical solution of this utility model: the chassis of the vehicle body is fixedly connected with a lug plate, and the support frame is detachably connected to the lug plate by bolts and anti-loosening nuts.

[0023] Through the above technical solution, the ear plate provides a solid and reliable installation foundation for the support frame. The connection method of bolts and anti-loosening nuts not only ensures the rigidity and strength of the connection between the support frame and the vehicle chassis, but also effectively withstands complex loads. Its anti-loosening design also ensures the long-term stability of the connection under the long-term vibration environment of the vehicle, while realizing the function of quick disassembly and assembly.

[0024] In summary, this utility model has at least one of the following beneficial technical effects:

[0025] 1. This utility model discloses a bottom-mounted vehicle hydrogen swapping system, which achieves a balance between high convenience of hydrogen swapping operation and high stability of hydrogen storage module when the vehicle is in motion by integrating the hydrogen storage module into a bottom-mounted and modular design, and setting up a detachable connection, independent cavity, supporting and fixing structure and lifting and moving mechanism.

[0026] 2. This utility model discloses a bottom-mounted vehicle hydrogen swapping system, which uses a U-shaped pressure bar and threaded fastening method to lock the gas cylinder from above, and combines it with an adapter tray with anti-slip pads at the bottom, to achieve multi-dimensional stable positioning and wear protection of the hydrogen cylinder during vehicle operation.

[0027] 3. This utility model discloses a bottom-mounted vehicle hydrogen swapping system, which achieves "movement-support" state switching by integrating lifting wheels, and is equipped with a hydrogen leakage monitoring and alarm system, realizing convenient and efficient hydrogen swapping process and comprehensive safety protection for system operation. Attached Figure Description

[0028] Figure 1 This is a front view of Embodiment 1 of the under-mounted vehicle hydrogen swapping system of this utility model.

[0029] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of the hydrogen exchange system.

[0030] Figure 3 for Figure 1 Enlarged structural diagram of the lifting wheel body.

[0031] Reference numerals: 1. Vehicle body; 2. Support frame; 21. Partition plate; 3. Hydrogen cylinder; 4. Tray; 5. Pressure strip; 51. Rubber pad; 6. Lifting wheel; 61. Fixed seat; 62. Universal wheel; 63. Lifting rod; 64. Support foot; 7. Hydrogen concentration sensor; 8. Audible and visual alarm; 9. Ear plate. Detailed Implementation

[0032] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0033] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] Example 1:

[0036] Reference Figure 1 The present invention discloses a bottom-mounted vehicle hydrogen swapping system, including a refrigerated truck body 1. To enable bottom-mounted installation and quick disassembly of the hydrogen storage module, the chassis of the vehicle body 1 is fixedly connected to a lug plate 9. The support frame 2 is connected to the lug plate 9 by bolts and anti-loosening nuts, forming a detachable connection. This structure ensures both connection rigidity and meets the requirements for quick disassembly. At the same time, a gas supply box adapted to the power requirements of the refrigerated truck is set inside the vehicle and connected to the hydrogen cylinder 3 through a pressure-resistant pipeline with a shut-off valve, forming a complete hydrogen supply system.

[0037] Reference Figure 2 The support frame 2 has multiple partition plates 21 welded inside, which divide the support frame 2 into multiple independent cavities adapted to hydrogen cylinders 3, effectively preventing collisions between cylinders and adapting to the long-distance bumpy transportation environment of refrigerated trucks; each cavity has a tray 4 at the bottom, whose inner surface with anti-slip rubber pads is adapted to the shape of hydrogen cylinder 3, restricting horizontal movement; the top of hydrogen cylinder 3 has a U-shaped pressure strip 5 with the U-shaped opening facing downward, which is fixed to the partition plate 21 by threaded connection, providing downward locking force to prevent the cylinder from jumping; the rubber pad 51 on the inner wall of the pressure strip 5 prevents wear on the cylinder body.

[0038] Reference Figure 2 and Figure 3 To improve the mobility of the support frame 2 during hydrogen exchange, a lifting wheel 6 is provided at the bottom of the support frame 2. The lifting wheel 6 includes a fixed base 61, a universal wheel 62, and a lifting rod 63. The fixed base 61 is fixedly connected to the bottom of the support frame 2 to provide an installation base. The universal wheel 62 is installed on the fixed base 61 to enable the support frame 2 to move flexibly. The top end of the lifting rod 63 is threaded to the fixed base 61, and the bottom end is connected to a support foot 64. By rotating the lifting rod 63, the height of the support foot 64 can be adjusted to achieve ground support and storage of the universal wheel 62, ensuring convenient and safe hydrogen exchange operation, reducing the downtime of refrigerated trucks and ensuring the freshness of goods in the truck compartment.

[0039] Reference Figure 1 and Figure 2The system also integrates a hydrogen leak monitoring device, which consists of a hydrogen concentration sensor 7 and an audible and visual alarm 8. The hydrogen concentration sensor 7 is installed inside the support frame 2 and can be placed in high-leaking-risk areas near the pipeline interface. The audible and visual alarm 8 is installed in the driver's cab of the refrigerated truck, and the hydrogen concentration sensor 7 is electrically connected to the audible and visual alarm 8. It can monitor the hydrogen concentration inside the support frame 2 and at the pipeline connection in real time. Once a hydrogen leak is detected, the hydrogen concentration sensor 7 immediately transmits a signal to the audible and visual alarm 8 to trigger the audible and visual alarm, forming a complete active safety protection system for the hydrogen storage system of the refrigerated truck.

[0040] The working process of this utility model's under-floor hydrogen swapping system is as follows: Under normal operation of the refrigerated truck, the entire hydrogen storage module is reliably fixed to the vehicle chassis via the support frame 2. At this time, rotating the lifting rod 63 in the forward direction raises the support leg 64 off the ground, and the weight of the hydrogen swapping module is entirely borne by the vehicle chassis, with the casters 62 not in contact with the ground. When a hydrogen swapping operation is required, to prevent the temperature inside the truck from rising and the cargo from spoiling due to prolonged shutdown, the operator first rotates the lifting rod 63 in the reverse direction, lowering the support leg 64 and firmly supporting it on the ground, at which point the casters 62 contact the ground and bear the weight. Then, the operator loosens and removes the anti-loosening nuts and bolts connecting the support frame 2 and the chassis ear plate 9. Next, the quick connector between the hydrogen cylinder 3 and the vehicle's hydrogen supply system is disconnected. The operator can then push the support frame 2 and use the casters 62 to move the entire hydrogen storage module out from under the refrigerated truck. After removing the empty hydrogen storage module, a fully filled spare hydrogen storage module can be pushed into the predetermined position under the refrigerated truck using the casters 62. Next, reconnect the quick connector between the hydrogen cylinder 3 and the vehicle's hydrogen supply system. Then, secure the support frame 2 to the chassis ear plate 9 with bolts and lock nuts. Finally, rotate the lifting rod 63 forward to raise the support foot 64, transferring the weight of the hydrogen storage module back onto the refrigerated truck chassis. During the refrigerated truck's operation, if the hydrogen concentration sensor 7 detects that the hydrogen concentration inside the support frame 2 exceeds the safety threshold, it will immediately transmit a signal to the audible and visual alarm 8, triggering it to issue an audible and visual warning, reminding the driver to take appropriate measures to avoid interruption of refrigerated transport or loss of goods due to leakage.

[0041] The implementation principle of this utility model is as follows: In terms of modular hydrogen storage and rapid replacement, multiple hydrogen cylinders 3 and their auxiliary facilities are integrated into an independent hydrogen storage module unit through a support frame 2; the support frame 2 and the refrigerated truck chassis are connected by a detachable connection mechanism consisting of ear plates 9, bolts, and anti-loosening nuts, which realizes the rapid separation and connection of the module and the vehicle body. The lifting wheel 6 achieves the switching of the relative ground height between the support foot 64 and the universal wheel 62 by rotating the lifting rod 63, so that the hydrogen storage module can switch between mobile and fixed states, reducing the operation intensity and improving the hydrogen replacement efficiency, especially suitable for the needs of refrigerated trucks to quickly replenish energy and reduce transportation interruptions. For stability and protection, a multi-dimensional cylinder fixing system was constructed. The tray 4 supports the bottom of the cylinder and provides effective static friction to prevent horizontal slippage. The U-shaped pressure strip 5 applies downward restraint from the top of the cylinder, providing reliable locking through threaded connections to prevent vertical movement. The rubber pad 51 on the inner wall of the pressure strip 5 and the anti-slip rubber pad on the surface of the tray 4 work together to buffer and protect, avoiding rigid contact and wear, adapting to the bumpy transportation environment of long-distance refrigerated trucks. For safety monitoring, a hydrogen concentration sensor 7, located inside the upper part of the frame, continuously monitors hazardous areas. When a leak is detected, an audible and visual alarm 8 is triggered by the circuit, providing an early warning function and ensuring safety for long-term continuous transportation of refrigerated trucks. Through the synergistic effect of these components, the stable operation of the hydrogen storage system in the refrigerated truck is achieved.

[0042] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A bottom-mounted vehicle hydrogen swapping system, comprising a vehicle body (1), characterized in that, The chassis of the vehicle body (1) is detachably connected to a support frame (2). The support frame (2) is provided with multiple partition plates (21), which divide the space into multiple independent cavities adapted to hydrogen cylinders (3). The bottom of the support frame (2) is provided with a tray (4) for supporting the hydrogen cylinders (3). The top of the hydrogen cylinders (3) is provided with pressure strips (5) for limiting their vertical movement. The bottom of the support frame (2) is provided with lifting wheels (6).

2. The under-floor vehicle hydrogen swapping system according to claim 1, characterized in that, The pressure strip (5) has a U-shaped structure with its U-shaped opening facing downwards. The inner wall of the pressure strip (5) abuts against the hydrogen cylinder (3). Both ends of the pressure strip (5) are threadedly connected to the adjacent partition plate (21).

3. The under-floor vehicle hydrogen swapping system according to claim 2, characterized in that, A rubber pad (51) is provided on the inner wall of the pressure strip (5).

4. The under-floor vehicle hydrogen swapping system according to claim 1, characterized in that, The inner surface of the tray (4) is provided with an anti-slip rubber pad, and the inner surface of the tray (4) is adapted to the outer surface of the hydrogen cylinder (3).

5. The under-floor vehicle hydrogen swapping system according to claim 1, characterized in that, The lifting wheel body (6) includes a fixed base (61), omnidirectional wheels (62), and a lifting rod (63). The fixing seat (61) is fixedly connected to the bottom of the support frame (2); The caster wheel (62) is mounted on the fixed base (61); The top end of the lifting rod (63) is threaded to the fixed base (61), and the bottom end is connected to a support foot (64).

6. The under-floor vehicle hydrogen swapping system according to claim 1, characterized in that, It also includes a hydrogen leak monitoring device, which includes a hydrogen concentration sensor (7) installed in the support frame (2) and an audible and visual alarm (8) installed in the driver's cab. The hydrogen concentration sensor (7) is electrically connected to the audible and visual alarm (8).

7. The under-floor vehicle hydrogen swapping system according to claim 1, characterized in that, The chassis of the vehicle body (1) is fixedly connected to a lug plate (9), and the support frame (2) is detachably connected to the lug plate (9) by bolts and anti-loosening nuts.

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