A safe hydrogen filling device for new energy vehicles

Abstract

The invention discloses a safe hydrogen filling device for new energy vehicles, comprising: an explosion-proof box, wherein a plurality of hydrogen storage tanks are arranged inside the explosion-proof box, wherein the hydrogen storage tanks are provided with a hydrogen filling end and a hydrogen discharge end, wherein a safety component is fixedly arranged in the explosion-proof box on a side close to the hydrogen discharge end, and the safety component is communicated with the hydrogen discharge end, and the safety component can collect and store the hydrogen remaining in a pipeline, wherein a device hydrogen filling port is arranged on a side close to the hydrogen filling end on the surface of the explosion-proof box, and the device hydrogen filling port is communicated with the hydrogen filling end, and hydrogen can be supplemented, wherein a device hydrogen discharge port component is arranged on the surface of the explosion-proof box near the safety component, and the device hydrogen discharge port component is communicated with the safety component; a hydrogen filling gun, which is arranged on the surface of the explosion-proof box and is communicated with the device hydrogen discharge port component; and a handle, which is arranged on the surface of the explosion-proof box and is convenient for operators to transfer the device.

Description

Technical Field

[0001] The present invention relates to the field of new energy technology, and more specifically, to a safe hydrogen filling device for new energy vehicles. Background Art

[0002] At present, new energy vehicles are mainly divided into electric energy, natural gas energy, and hydrogen energy. Electric energy and natural gas energy will still cause certain pollution to the atmosphere when the vehicle is running, and the only by-product of hydrogen energy during operation is water. However, since hydrogen is a flammable and explosive energy source that is difficult to refuel, vehicles must be refueled at designated hydrogen refueling stations. When the hydrogen in a remote area is exhausted, the vehicle can only be towed to a hydrogen refueling station by a trailer for refueling. In addition, the hydrogen remaining in the hydrogen refueling gun and pipeline during refueling poses a great danger in a high temperature environment.

[0003] Therefore, it is necessary to develop a mobile vehicle hydrogen refueling equipment to solve the above problems. Summary of the invention

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a hydrogen safety filling device for new energy vehicles, comprising: an explosion-proof box, a plurality of hydrogen storage tanks are arranged inside the explosion-proof box, a hydrogen filling end and a hydrogen discharge end are provided on the hydrogen storage tank, a safety component is fixedly arranged on the side of the explosion-proof box close to the hydrogen discharge end, and the safety component is connected to the hydrogen discharge end, and the safety component can collect and store the residual hydrogen in the pipeline, a device hydrogen filling port is arranged on the side of the explosion-proof box close to the hydrogen filling end, and the device hydrogen filling port is connected to the hydrogen filling end, so as to be able to supplement hydrogen, and a device hydrogen discharge port component is arranged on the surface of the explosion-proof box close to the safety component, and the device hydrogen discharge port component is connected to the safety component;

[0005] A hydrogenation gun, which is arranged on the surface of the explosion-proof box and is connected to the hydrogen exhaust port assembly of the equipment; and

[0006] A handle is arranged on the surface of the explosion-proof box to facilitate operators to transfer the equipment.

[0007] Furthermore, preferably, a first one-way valve is provided at the port of the hydrogenation gun to provide a one-way discharge device for hydrogen only.

[0008] Further, as a preference, the insurance component comprises:

[0009] A safety cylinder is fixed in the explosion-proof box on one side close to the hydrogen discharge end;

[0010] A piston is sealingly and slidably disposed on the inner wall of the safety cylinder;

[0011] a first connecting rod, hingedly connected to the piston;

[0012] a second connecting rod, hingedly connected to an end of the first connecting rod away from the piston;

[0013] A one-way ratchet wheel is fixed on one side of the second connecting rod and can only rotate in one direction;

[0014] a bidirectional ratchet, coaxially arranged with the unidirectional ratchet on the other side of the second connecting rod; and

[0015] The operating handle passes through the side plate of the explosion-proof box, the two-way ratchet, one end of the second connecting rod away from the first connecting rod, and the two-way ratchet in sequence.

[0016] Further, as a preference, an inlet port is provided on the surface of the safety cylinder, the inlet port is always located on the sealing side of the piston, and a discharge port and a reflux port are provided on the end surface of the safety cylinder.

[0017] Further, as a preference, the equipment hydrogen exhaust port assembly comprises: an equipment hydrogen exhaust port shell is penetrated and sealed and fixed on the explosion-proof box body, a sealing plug is slidably provided inside the equipment hydrogen exhaust port shell, the sealing plug can divide the inside of the equipment hydrogen exhaust port shell into cavity one and cavity two, the cavity one is connected to the hydrogen filling gun, the cavity two is connected to the discharge port, a spring is provided between the sealing plug and the end face of cavity one, a guide column is fixed on the side of the sealing plug away from the spring, and the guide column is slidably provided in the equipment hydrogen exhaust port shell.

[0018] Furthermore, preferably, a reflux channel is provided in the cavity 1, the reflux channel is communicated with the reflux port, and a second one-way valve is provided in the reflux channel to allow only one-way reflux of hydrogen into the safety cylinder.

[0019] Further, as a preference, a baffle is fixedly provided on the surface of the sealing plug, and when the sealing plug overcomes the sliding of the spring, the cavity one and the cavity two are connected, and the baffle cuts off the reflux channel.

[0020] Furthermore, preferably, the hydrogen discharge end of the hydrogen storage tank can only discharge hydrogen in one direction, and a plurality of the hydrogen storage tanks can supply hydrogen independently.

[0021] Compared with the prior art, the present invention provides a safe hydrogen filling device for new energy vehicles, which has the following beneficial effects:

[0022] Using multiple hydrogen storage tanks to supply hydrogen independently can increase the hydrogen supply pressure in stages and quickly refuel the vehicle.

[0023] After hydrogenation is completed, the cavity in the hydrogen discharge port assembly of the equipment is connected to the reflux channel. By turning the operating handle, the remaining hydrogen in the hydrogenation gun and the pipeline can be sucked into the safety cylinder to prevent accidents caused by the residual hydrogen staying in the hydrogenation gun and the pipeline for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of a hydrogen safety filling device for new energy vehicles;

[0025] Figure 2 This is a schematic diagram of the structure of a safety component in a hydrogen safety filling device for new energy vehicles;

[0026] Figure 3 This is a structural schematic diagram of a hydrogen discharge port assembly in a hydrogen safety filling device for new energy vehicles;

[0027] In the figure: 1. explosion-proof box; 2. hydrogen storage tank; 21. hydrogen filling end; 22. hydrogen discharge end; 3. insurance assembly; 31. insurance cylinder; 311. discharge port; 312. reflux port; 313. inlet port; 32. piston; 33. first connecting rod; 34. second connecting rod; 35. operating handle; 36. one-way ratchet; 37. two-way ratchet; 4. equipment hydrogen filling port; 5. equipment hydrogen discharge port assembly; 51. equipment hydrogen discharge port housing; 52. sealing plug; 53. cavity one; 54. cavity two; 55. guide column; 56. spring; 57. baffle; 58. reflux channel; 59. second one-way valve; 6. hydrogen filling gun; 61. first one-way valve; 7. handle. DETAILED DESCRIPTION

[0028] See also Figure 1-3 The present invention provides a safe hydrogen filling device for new energy vehicles, comprising: an explosion-proof box 1, wherein a plurality of hydrogen storage tanks 2 are arranged inside the explosion-proof box 1, wherein the hydrogen storage tank 2 is provided with a hydrogen filling end 21 and a hydrogen discharge end 22, wherein a safety component 3 is fixedly arranged on the side of the explosion-proof box 1 close to the hydrogen discharge end 22, and the safety component 3 is communicated with the hydrogen discharge end 22, and the safety component 3 can collect and store the hydrogen remaining in the pipeline, and an equipment hydrogen filling port 4 is arranged on the side of the explosion-proof box 1 close to the hydrogen filling end 21, and the equipment hydrogen filling port 4 is communicated with the hydrogen filling end 21, and hydrogen can be supplemented, and an equipment hydrogen discharge port component 5 is arranged on the surface of the explosion-proof box 1 close to the safety component 3, and the equipment hydrogen discharge port component 5 is communicated with the safety component 3;

[0029] A hydrogenation gun 6 is arranged on the surface of the explosion-proof housing 1 and is connected to the equipment hydrogen discharge port assembly 5; and

[0030] A handle 7 is provided on the surface of the explosion-proof box 1 to facilitate operators to transfer the equipment.

[0031] In this embodiment, a first one-way valve 61 is provided at the port of the hydrogenation gun 6, which is only a one-way discharge device for hydrogen.

[0032] In this embodiment, the insurance component 3 includes:

[0033] A safety cylinder 31 is fixed in the explosion-proof box 1 near the hydrogen discharge end 22;

[0034] A piston 32 is sealingly and slidably disposed on the inner wall of the safety cylinder 31;

[0035] A first connecting rod 33, hinged to the piston 32;

[0036] A second connecting rod 34 is hingedly connected to an end of the first connecting rod 33 away from the piston 32;

[0037] A one-way ratchet 36 is fixed to one side of the second connecting rod 34 and can only rotate in one direction;

[0038] A bidirectional ratchet 37 is coaxially disposed with the unidirectional ratchet 36 on the other side of the second connecting rod 34; and

[0039] The operating handle 35 passes through the side plate of the explosion-proof box 1, the two-way ratchet 37, one end of the second connecting rod 34 away from the first connecting rod 33, and the two-way ratchet 37 in sequence.

[0040] It should be explained that the two-way ratchet 37 can adjust the rotation direction of the two-way ratchet 37 through a direction switch. When the rotation directions of the two-way ratchet 37 and the one-way ratchet 36 are inconsistent, the operating handle 35 is self-locking.

[0041] When the two-way ratchet 37 and the one-way ratchet 36 can rotate in the same direction, the piston 32 can be driven to slide in the safety cylinder 31 by rotating the operating handle 35 .

[0042] In this embodiment, an inlet port 313 is provided on the surface of the safety cylinder 31 . The inlet port 313 is always located at the sealing side of the piston 32 . An outlet port 311 and a reflux port 312 are provided on the end surface of the safety cylinder 31 .

[0043] It should be explained that the piston 32 can slide sealingly on the inner wall of the safety cylinder 31 , and the movement limit of the piston 32 will not exceed the opening position of the inlet port 313 .

[0044] In this embodiment, the equipment hydrogen discharge port assembly 5 includes: an equipment hydrogen discharge port shell 51 that is sealed and fixed on the explosion-proof box 1, and a sealing plug 52 is slidably provided inside the equipment hydrogen discharge port shell 51. The sealing plug 52 can divide the interior of the equipment hydrogen discharge port shell 51 into a cavity 1 53 and a cavity 2 54. The cavity 1 53 is connected to the hydrogen filling gun 6, and the cavity 2 54 is connected to the discharge port 311. A spring 56 is provided between the sealing plug 52 and the end face of the cavity 1 53. A guide column 55 is fixed on the side of the sealing plug 52 away from the spring 56, and the guide column 55 is slidably set in the equipment hydrogen discharge port shell 51.

[0045] It should be explained that when the air pressure on the sealing side of the safety cylinder 31 reaches a specified value, the air pressure can push the sealing plug 52 to slide to overcome the elastic force of the spring 56, and the cavity 1 53 and the cavity 2 54 are connected, so that hydrogen can be filled into the car in a high-pressure state through the hydrogen filling gun.

[0046] In this embodiment, a reflux channel 58 is opened in the cavity 1 53 , and the reflux channel 58 is connected to the reflux port 312 . A second one-way valve 59 is provided in the reflux channel 58 to allow only one-way reflux of hydrogen into the safety cylinder 31 .

[0047] In this embodiment, a baffle 57 is fixedly provided on the surface of the sealing plug 52 . When the sealing plug 52 overcomes the sliding of the spring 56 , the cavity 1 53 is connected to the cavity 2 54 , and the baffle 57 cuts off the reflux channel 58 .

[0048] It should be explained that after the hydrogenation of the automobile is completed, the hydrogen storage tank 2 stops supplying hydrogen, the air pressure on the sealing side of the safety cylinder 31 decreases, and under the action of the spring 56, the cavity 1 53 and the cavity 2 54 are closed, and the cavity 1 53 is connected to the reflux channel 58. Then, the operating handle 35 is rotated to suck the hydrogen remaining in the hydrogenation gun 6 and the pipeline into the safety cylinder 31, and the operating handle 35 is self-locked.

[0049] In this embodiment, the hydrogen discharge end 22 of the hydrogen storage tank 2 can only discharge hydrogen in one direction, and a plurality of the hydrogen storage tanks 2 can supply hydrogen independently.

[0050] It should be explained that the piston 32 is self-locked at the extreme position close to the inlet port 313. When the switch of the first hydrogen storage tank 2 is turned on to supply hydrogen, the air pressure in the car increases and the air pressure in the first hydrogen storage tank 2 decreases. When the air pressures of the two are equal, hydrogen cannot be filled in. At this time, the first hydrogen storage tank 2 is closed and the second hydrogen storage tank 2 is opened to continue supplying hydrogen.

[0051] When implementing

[0052] First, insert the hydrogen filling gun 6 into the gas filling port of the automobile, turn the operating handle 35 to make the piston 32 slide to the extreme position close to the inlet port 313 and self-lock, open one of the hydrogen storage tanks 2 to supply hydrogen, and the air pressure on the sealing side of the safety cylinder 31 increases. When it increases to a specified value, the air pressure pushes the sealing plug 52 to slide, overcoming the elastic force of the spring 56. The cavity 1 53 and the cavity 2 54 are connected, and the cavity 1 53 and the reflux channel 58 are cut off by the baffle 57. Hydrogen can be filled into the automobile in a high-pressure state through the hydrogen filling gun.

[0053] After the hydrogenation of the vehicle is completed, the hydrogen storage tank 2 stops supplying hydrogen, the air pressure on the sealing side of the safety cylinder 31 decreases, and under the action of the spring 56, the cavity 1 53 and the cavity 2 54 are closed, and the cavity 1 53 is connected to the reflux channel 58. Then, the operating handle 35 is rotated to suck the hydrogen remaining in the hydrogenation gun 6 and the pipeline into the safety cylinder 31, and the operating handle 35 is self-locked.

[0054] In another embodiment, after the hydrogen storage tank 2 is used to supply gas in turn, the internal pressure of the hydrogen storage tank 2 is too low to supply hydrogen normally. At this time, a small amount of hydrogen in the hydrogen storage tank 2 can be sucked into the safety cylinder 31 by rotating the operating handle 35 and then pressurized to continue hydrogenation.

[0055] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A safe hydrogen filling device for new energy vehicles, characterized by: The invention comprises an explosion-proof housing (1), wherein a plurality of hydrogen storage tanks (2) are arranged inside the explosion-proof housing (1), wherein the hydrogen storage tanks (2) are provided with a hydrogen filling end (21) and a hydrogen discharge end (22), wherein a safety component (3) is fixedly arranged on a side of the explosion-proof housing (1) close to the hydrogen discharge end (22), and the safety component (3) is communicated with the hydrogen discharge end (22), and the safety component (3) can collect and store the hydrogen remaining in the pipeline, wherein a device hydrogen filling port (4) is arranged on a side of the surface of the explosion-proof housing (1) close to the hydrogen filling end (21), and the device hydrogen filling port (4) is communicated with the hydrogen filling end (21) so as to be able to replenish hydrogen, and wherein a device hydrogen discharge port component (5) is arranged on a side of the surface of the explosion-proof housing (1) close to the safety component (3), and the device hydrogen discharge port component (5) is communicated with the safety component (3); A hydrogenation gun (6) is arranged on the surface of the explosion-proof housing (1) and is connected to the hydrogen exhaust port assembly (5) of the equipment; and A handle (7) is arranged on the surface of the explosion-proof box (1) to facilitate operators to move the equipment; The insurance component (3) comprises: A safety cylinder (31) is fixed inside the explosion-proof housing (1) on a side close to the hydrogen discharge end (22); A piston (32) is sealingly and slidably disposed on the inner wall of the safety cylinder (31); A first connecting rod (33) is hingedly connected to the piston (32); A second connecting rod (34) is hingedly connected to an end of the first connecting rod (33) away from the piston (32); A one-way ratchet (36) is fixed on one side of the second connecting rod (34) and can only rotate in one direction; a bidirectional ratchet (37), coaxially arranged with the unidirectional ratchet (36) on the other side of the second connecting rod (34); and The operating handle (35) passes through the side plate of the explosion-proof box (1), the bidirectional ratchet (37), one end of the second connecting rod (34) away from the first connecting rod (33), and the bidirectional ratchet (37) in sequence.

2. A safe hydrogen filling device for new energy vehicles according to claim 1, characterized in that: A first one-way valve (61) is provided at the port of the hydrogenation gun (6) to provide a one-way discharge device for hydrogen only.

3. A safe hydrogen filling device for new energy vehicles according to claim 1, characterized in that: The surface of the safety cylinder (31) is provided with an inlet port (313), and the inlet port (313) is always located on the sealing side of the piston (32). The end surface of the safety cylinder (31) is provided with an outlet port (311) and a reflux port (312).

4. A safe hydrogen filling device for new energy vehicles according to claim 3, characterized in that: The device hydrogen discharge port assembly (5) comprises a device hydrogen discharge port housing (51), which is sealed and fixed on the explosion-proof box (1). A sealing plug (52) is slidably provided inside the device hydrogen discharge port housing (51). The sealing plug (52) can divide the inside of the device hydrogen discharge port housing (51) into a cavity one (53) and a cavity two (54). The cavity one (53) is connected to the hydrogenation gun (6), and the cavity two (54) is connected to the discharge port (311). A spring (56) is provided between the sealing plug (52) and the end surface of the cavity one (53). A guide column (55) is fixed on the side of the sealing plug (52) away from the spring (56), and the guide column (55) is slidably provided in the device hydrogen discharge port housing (51).

5. A safe hydrogen filling device for new energy vehicles according to claim 4, characterized in that: A reflux channel (58) is provided in the cavity one (53), the reflux channel (58) is communicated with the reflux port (312), and the reflux channel (58) is provided with a second one-way valve (59) for only allowing hydrogen to reflux into the safety cylinder (31) in one direction.

6. A safe hydrogen filling device for new energy vehicles according to claim 5, characterized in that: A baffle (57) is fixedly provided on the surface of the sealing plug (52). When the sealing plug (52) overcomes the sliding of the spring (56), the cavity one (53) and the cavity two (54) are connected, and the baffle (57) cuts off the reflux channel (58).

7. The hydrogen safety filling equipment for new energy vehicles according to claim 1 is characterized in that: The hydrogen discharge end (22) provided on the hydrogen storage tank (2) can only discharge hydrogen in one direction, and a plurality of hydrogen storage tanks (2) can supply hydrogen independently.

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