A heating method and device for a hydrogen storage container

Abstract

The present invention relates to the technical field of hydrogen storage container heating, and in particular to a heating method and device for a hydrogen storage container, which is used to heat hydrogen storage alloy sheets arranged in a sheet-like and stacked manner inside the container shell, including a heating layer, and two heating layers are correspondingly clamped for each hydrogen storage alloy sheet; the heating layer includes at least two heat transfer tubes for conveying heat-conducting oil, and the upper and lower sides of the heat transfer tubes are both planes that fit the hydrogen storage alloy sheets. Adjacent heat transfer tubes are arranged at equal distances, and a gap for conveying hydrogen is formed between the two; the heat transfer tube includes an oil inlet end, an oil outlet end, a straight pipe section and a bent pipe section; wherein, the oil inlet end of the heat transfer tube is fixedly communicated with the sub-inlet oil pipe, and the oil outlet end of the heat transfer tube is fixedly communicated with the sub-outlet oil pipe; there are several straight pipe sections, and they are arranged side by side, and adjacent two straight pipe sections are connected by a bent pipe section. The present invention has high heating efficiency and heating safety for hydrogen storage alloy sheets.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen storage container heating, and in particular to a method and device for heating a hydrogen storage container. Background Art

[0002] Hydrogen storage alloy is a metal used for hydrogen storage. It can absorb and release hydrogen under certain conditions, has excellent cycle life performance, and can be used in large batteries, especially in electric vehicles, hybrid electric vehicles, high-power applications and other fields.

[0003] Hydrogen storage alloys have temperature requirements in the process of storing and releasing hydrogen. Usually, a dedicated heating device is used to heat the hydrogen storage alloy to a suitable temperature. At present, there are various heating devices for hydrogen storage alloys, such as heating by hot air flow generated by combustion. The patent with announcement number CN100423340C discloses a heating device and method for a hydrogen storage container to provide the heating required for the hydrogen storage container during hydrogen release operation. It includes a hydrogen storage tank container for holding the hydrogen storage container, and a catalyst bed is arranged in the hydrogen storage tank container. An air supply device is connected to a nozzle section via an air flow introduction pipeline, and the air flow delivery end of the nozzle section is connected to the catalyst bed via a mixed gas delivery pipeline. A heat source fuel storage tank stores heat source fuel and is connected to the nozzle section via a heat source fuel supply pipeline, a coiled pipeline and a heat source fuel supply conduit. When an airflow passes through the nozzle section, the heat source fuel is attracted into the nozzle section, so that the heat source fuel and the airflow form a mist-like mixed gas and are sent into the catalyst bed for combustion, and the hot gas generated is used to heat the hydrogen storage container.

[0004] Although the technical solution recorded in the above patent can achieve the heating of hydrogen storage alloys, the actual heating efficiency and heating safety are relatively low. For example, in the above patent, the surface of the hydrogen storage container is heated by the hot air flow generated by gas combustion. Since a thicker hydrogen storage alloy is placed inside the hydrogen storage container, the heating process of this heating method is to first heat the container itself, and then the container itself transfers the heat to the periphery of the hydrogen storage alloy, and then transfers the heat from the periphery of the hydrogen storage alloy to the inside of the hydrogen storage alloy. The heating speed is slow and the efficiency is low. For another example, the above patent generates heat by combustion, and there is an open flame, so dangerous accidents such as explosions may occur. Summary of the invention

[0005] The object of the present invention is to provide a method and device for heating a hydrogen storage container to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a heating device for a hydrogen storage container, used to heat the hydrogen storage alloy sheets in a sheet shape and stacked inside the container shell, comprising a heating layer, and each hydrogen storage alloy sheet is sandwiched with two heating layers;

[0007] The container shell includes an end plate adjacent to the branch oil outlet pipe and the branch oil inlet pipe;

[0008] A buffer component is fixedly connected to the end plate, the hydrogen pipeline is connected to the inner cavity of the buffer component, and the inner cavity of the buffer component is connected to the interior of the container shell through the strip hole opened on the end plate; when storing hydrogen, the hydrogen flows between two adjacent heating layers through the strip hole;

[0009] The buffer assembly includes a sealing frame and an end cover fixed to one end of the sealing frame, and the other end of the sealing frame is fixedly connected to the end plate;

[0010] The hydrogen pipeline is fixed to the end cover;

[0011] A recoil bowl facing the hydrogen pipeline is arranged inside the sealing frame, and the recoil bowl is fixedly connected to the end cover through a connecting rod;

[0012] The inner space of the sealing frame is divided into a first chamber and a second chamber by a middle partition;

[0013] A recoil bowl is disposed inside the first chamber;

[0014] A plurality of rows of through holes are arranged on the middle partition plate, and each row of through holes is arranged in a staggered manner parallel to the strip holes.

[0015] Preferably, a semicircular piece is fixed on the end plate between two adjacent strip holes, the opening of the semicircular piece faces the middle partition, the length of the semicircular piece is greater than or equal to the length of the strip hole, the through hole is aligned with the semicircular piece, and the strip hole is aligned with the gap between two adjacent branch oil pipes.

[0016] Preferably, the heating layer includes at least two heat transfer pipes for conveying heat transfer oil; the heat transfer pipe includes an oil inlet end, an oil outlet end, a straight pipe section and a curved pipe section; wherein the oil inlet end of the heat transfer pipe is fixedly connected to the branch oil inlet pipe, and the oil outlet end of the heat transfer pipe is fixedly connected to the branch oil outlet pipe;

[0017] The axial direction of the branch oil outlet pipe is parallel to the axial direction of the branch oil inlet pipe, and the axial direction of the branch oil outlet pipe is perpendicular to the length direction of the straight pipe section;

[0018] The plate surface of the end plate is parallel to the axial direction of the branch oil outlet pipe;

[0019] A plurality of branch oil outlet pipes extend through and extend to the outside of the container shell and are fixedly connected with the main oil outlet pipe;

[0020] A plurality of branch oil inlet pipes extend through and extend to the outside of the container shell and are fixedly connected with the main oil inlet pipe.

[0021] Preferably, the oil inlet end and the oil outlet end are fixedly connected to the branch oil inlet pipe and the branch oil outlet pipe respectively through the arc pipe.

[0022] Preferably, the curved pipe section includes a large-diameter connecting pipe section and a small-diameter connecting pipe section;

[0023] The adjacent straight pipe sections a and b are fixedly connected via a small-diameter connecting pipe section; the adjacent straight pipe sections b and c are fixedly connected via a large-diameter connecting pipe section.

[0024] Preferably, both upper and lower side surfaces of the heat transfer tube are planes that fit the hydrogen storage alloy sheet, two adjacent heat transfer tubes are equidistantly arranged, and a gap for transporting hydrogen is formed between the two.

[0025] Preferably, a plurality of straight pipe sections are provided and arranged side by side with each other, and two adjacent straight pipe sections are connected via a curved pipe section;

[0026] A plurality of straight pipe sections are arranged side by side and equidistantly to form a rectangular heating plate with a plurality of gaps, and the plate surface area of ​​the hydrogen storage alloy sheet is matched with the plate surface area of ​​the heating plate.

[0027] Preferably, the oil inlet and oil outlet ends of two adjacent heating layers are in opposite positions.

[0028] A method for heating a hydrogen storage container, the method for heating a hydrogen storage container is based on the above-mentioned heating device for the hydrogen storage container, and comprises the following steps:

[0029] S1, the heat transfer oil heated to a predetermined temperature is transported to a plurality of branch oil inlet pipes through the main oil inlet pipe, and the heat transfer oil in the branch oil inlet pipes is then transported to each heat transfer pipe through the oil inlet end;

[0030] S2, the heat transfer oil at a predetermined temperature transfers heat to the hydrogen storage alloy sheet through the heat transfer pipe and the plane to heat the hydrogen storage alloy sheet to a predetermined temperature;

[0031] S3. When storing hydrogen, hydrogen enters the buffer assembly through the hydrogen pipeline. The hydrogen first passes through the recoil bowl for primary buffering and enters the first chamber. Then, it passes through the through hole on the middle partition for secondary buffering and enters the interior of the second chamber. After passing through the through hole, the hydrogen will impact the interior of the semicircular sheet for tertiary buffering, and then enter the gap between two adjacent oil outlet pipes through the strip hole for preliminary preheating.

[0032] S4. The preliminarily preheated hydrogen is transported to various positions of the hydrogen storage alloy sheet through the gaps, and the hydrogen is further heated to the storage temperature in the process of passing through the gaps.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] The present invention heats the hydrogen storage alloy sheet by means of a heating layer, and by means of a buffer assembly arranged on the end plate, the hydrogen entering through the hydrogen pipeline can be buffered, so that the hydrogen entering enters the interior of the container shell according to a predetermined position, and the sealing frame, the end cover and the end plate cooperate to form a sealed space, and a recoil bowl facing the hydrogen pipeline is arranged inside the sealing frame, and the recoil bowl is fixedly connected to the end cover by a connecting rod, so that the hydrogen entering the sealed space through the hydrogen pipeline will be buffered multiple times by the recoil bowl and the semicircular sheet in turn, so that the hydrogen can be dispersed into the sealed space, and the preheating effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 It is a schematic diagram of a cutaway three-dimensional structure of the present invention;

[0037] Figure 3 It is a schematic diagram of the structure of the heating layer and the hydrogen storage alloy sheet of the present invention;

[0038] Figure 4 Schematic diagram of the top view of the heat transfer tube of the present invention;

[0039] Figure 5 For the present invention Figure 4 The enlarged structural diagram at A in the middle;

[0040] Figure 6 It is a left-side structural schematic diagram of the heat transfer tube and the hydrogen storage alloy sheet of the present invention;

[0041] Figure 7 For the present invention Figure 6 The enlarged cross-sectional view at B in the middle is a schematic diagram of the structure;

[0042] Figure 8 It is a schematic diagram of the three-dimensional structure of the heat transfer tube of the present invention;

[0043] Fig. 9 For the present invention Figure 2 A front view structural diagram of

[0044] Fig.10 For the present invention Fig. 9 Schematic diagram of the local structure;

[0045] Fig.11 It is a schematic diagram of the explosion structure of the buffer assembly of the present invention.

[0046] In the figure: 1, heating layer; 11, heat transfer pipe; 111, oil inlet end; 112, oil outlet end; 113, straight pipe section; 113a, straight pipe section a; 113b, straight pipe section b; 113c, straight pipe section c; 114, large diameter connecting pipe section; 115, small diameter connecting pipe section; 116, plane; 12, branch oil outlet pipe; 13, branch oil inlet pipe; 14, main oil outlet pipe; 15, main oil inlet pipe; 16 , gap; 17, arc tube; 2, buffer assembly; 21, sealing frame; 22, end cover; 23, middle partition; 231, through hole; 24, first chamber; 25, second chamber; 26, recoil bowl; 261, connecting rod; 27, semicircular piece; 3, pad; 100, container shell; 101, end plate; 1011, strip hole; 200, hydrogen pipeline; 300, hydrogen storage alloy sheet. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] See also Figure 1-Figure 11 , the present invention provides a technical solution:

[0049] A heating device for a hydrogen storage container is used to heat sheet-shaped and stacked hydrogen storage alloy sheets 300 inside a container shell 100. In the present technical solution, there is no specific limitation on the material of the container shell 100, which can be metal or non-metal. The heating device for the hydrogen storage container in the present technical solution specifically includes a heating layer 1, and each hydrogen storage alloy sheet 300 is sandwiched with two heating layers 1. In some embodiments, as shown in the figure, the hydrogen storage alloy sheets 300 and the heating layers 1 are arranged in an alternate stacking manner in the vertical direction. Furthermore, the hydrogen storage alloy sheets 300 in the present embodiment are rectangular sheets, so that each hydrogen storage alloy sheet 300 can be sandwiched between two heating layers 1. During heating, the two heating layers 1 can be heated synchronously from the two plate surfaces of the hydrogen storage alloy sheet 300, and the heating efficiency is high.

[0050] Specifically, the heating layer 1 includes at least two heat transfer tubes 11 for conveying heat transfer oil, that is, the heating layer 1 in this embodiment heats the hydrogen storage alloy sheet 300 by conveying heat transfer oil with a certain temperature. On the one hand, the advantage of heat transfer oil heating is its high temperature stability. On the other hand, heat transfer oil heating has high safety. The upper and lower sides of the heat transfer tube 11 are both planes 116 that fit with the hydrogen storage alloy sheet 300. The plane 116 can increase the fitting area and fit between the heat transfer tube 11 and the hydrogen storage alloy sheet 300, which is beneficial to the heat transfer and improves the heating speed of the hydrogen storage alloy sheet 300. The two adjacent heat transfer tubes 11 are equidistantly arranged, and the distance between the two is 1 / 4 of the distance between the two. A gap 16 for transporting hydrogen is formed between the hydrogen storage alloy sheets 300 and the heating layer 1 in this embodiment. On the one hand, the hydrogen storage alloy sheets 300 and the heating layer 1 are staggered and stacked in the vertical direction, so that two adjacent hydrogen storage alloy sheets 300 are separated by the heating layer 1. On the other hand, since a gap 16 is formed between two adjacent heat transfer tubes 11, hydrogen can flow inside the gap 16. In this way, when storing hydrogen, external hydrogen can flow to various positions of the hydrogen storage alloy sheet 300 through the gap 16, which is convenient for reaction storage. At the same time, the heating of hydrogen is also achieved, thereby improving the efficiency of hydrogen storage. When releasing hydrogen, the hydrogen released by the hydrogen storage alloy sheet 300 can be discharged through the gap 16.

[0051] As shown in the figure, the heat transfer tube 11 includes an oil inlet end 111, an oil outlet end 112, a straight tube section 113 and a curved tube section. The straight tube section 113 is used to directly contact the hydrogen storage alloy sheet 300. The bent pipe section is used to connect two adjacent straight pipe sections 113 on the same heat transfer tube 11. Since only the straight pipe section 113 contacts the hydrogen storage alloy sheet 300, the shape of the hydrogen storage alloy sheet 300 can be designed as a rectangular sheet structure, thereby reducing the processing cost of the hydrogen storage alloy sheet 300; wherein, the oil inlet end 111 of the heat transfer tube 11 is fixedly connected to the branch oil inlet pipe 13, and the oil outlet end 112 of the heat transfer tube 11 is fixedly connected to the branch oil outlet pipe 12; there are a plurality of straight pipe sections 113, which are arranged side by side with each other, and two adjacent straight pipe sections 113 are connected through the bent pipe section; a plurality of straight pipe sections 113 are arranged side by side and equidistantly to form a rectangular heating plate with a plurality of gaps 16, and the plate surface area of ​​the hydrogen storage alloy sheet 300 is adapted to the plate surface area of ​​the heating plate; in some embodiments, the width of the gap 16 can be 1 mm.

[0052] In the present embodiment, the oil inlet 111 and the oil outlet 112 of two adjacent heating layers 1 are in opposite positions. The advantage of such arrangement is that, taking two adjacent heating layers 1 as an example, when the oil inlet 111 and the oil outlet 112 of one of the heating layers 1 are respectively arranged on the left and right sides of the heating layer 1, the oil inlet 111 and the oil outlet 112 of the other adjacent heating layer 1 are respectively arranged on the right and left sides of the heating layer 1. The result is that one of the heating layers 1 heats the hydrogen storage alloy sheet 300 from left to right, while the other adjacent heating layer 1 heats the hydrogen storage alloy sheet 300 from right to left. In this way, the same hydrogen storage alloy sheet 300 can be heated from both sides to the middle, so that the heating time of the hydrogen storage alloy sheet 300 is shortened by half, and the heating efficiency is high.

[0053] In addition, in this embodiment, the specific number of the heat transfer tubes 11 is not limited. For example, the number of the heat transfer tubes 11 can be five as shown in the figure. The purpose of arranging the heating layer 1 to be composed of five bent heat transfer tubes 11 is: on the one hand, the cross-section of the heat transfer tube 11 is small, and the heat transfer oil flow inside it is smooth, which makes the heat transfer speed faster and convenient to bend. On the other hand, the large number of heat transfer tubes 11 makes the number of gaps 16 large, which facilitates the transportation and heating of hydrogen.

[0054] In the above scheme, the hydrogen storage alloy sheet 300 is heated by setting a heating layer 1 formed by bending multiple heat transfer tubes 11. On the one hand, the cross-section of the heat transfer tube 11 is small, and the heat transfer oil flowing inside it is smooth, which makes the heat transfer speed faster. At the same time, it is convenient to bend and the production cost is low. On the other hand, the number of heat transfer tubes 11 is large, which makes the number of gaps 16 large, which is beneficial to the transportation and heating of hydrogen and improves the actual heating efficiency. In addition, the heat transfer tube 11 heats the hydrogen storage alloy sheet 300 through the heat transfer oil flowing inside it, which is convenient for fine control of the heating temperature, and the overall temperature is highly uniform and the heating safety is high. Moreover, since the positions of the oil inlet end 111 and the oil outlet end 112 of the two adjacent heating layers 1 are opposite, the same hydrogen storage alloy sheet 300 can be heated from both sides to the middle, so that the heating time of the hydrogen storage alloy sheet 300 is shortened by half, and the heating efficiency is high.

[0055] The axial directions of the branch oil outlet pipe 12 and the branch oil inlet pipe 13 are parallel, and the axial direction of the branch oil outlet pipe 12 is perpendicular to the length direction of the straight pipe section 113; multiple branch oil outlet pipes 12 extend through the outside of the container shell 100 and are fixedly connected to the main oil outlet pipe 14; multiple branch oil inlet pipes 13 extend through the outside of the container shell 100 and are fixedly connected to the main oil inlet pipe 15, and the main oil outlet pipe 14 and the main oil inlet pipe 15 are connected to the heat transfer oil.

[0056] The oil inlet end 111 and the oil outlet end 112 are fixedly connected to the branch oil inlet pipe 13 and the branch oil outlet pipe 12 respectively through the arc tube 17. In this embodiment, the arc tube 17 is used to realize the elastic connection between the heat transfer tube 11 and the branch oil inlet pipe 13 and the branch oil outlet pipe 12. In this way, during assembly, the arc tube 17 can be used to press the plane 116 of the heat transfer tube 11 against the surface of the hydrogen storage alloy sheet 300, thereby improving the actual heat transfer efficiency. In addition, the arrangement of the arc tube 17 reduces the difficulty of the assembly process between multiple heat transfer tubes 11 belonging to the same heating layer 1. For example, during assembly, even if multiple heat transfer tubes 11 belonging to the same heating layer 1 are There is a certain deviation in the horizontal height, and the elastic force of the arc tube 17 can also be used to make the planes 116 of the multiple heat transfer tubes 11 all pressed against the surface of the hydrogen storage alloy sheet 300; at the same time, precisely because of the setting of the arc tube 17, when the hydrogen storage alloy sheet 300 and the heating layer 1 expand due to heat, the stress at the connection position between the heat transfer tube 11 and the branch oil inlet pipe 13 and the branch oil outlet pipe 12 will also be dispersed, preventing the connection position between the heat transfer tube 11 and the branch oil inlet pipe 13 and the branch oil outlet pipe 12 from cracking and damage.

[0057] The curved pipe section includes a large-diameter connecting pipe section 114 and a small-diameter connecting pipe section 115; the adjacent straight pipe sections a113a and b113b are fixedly connected via the small-diameter connecting pipe section 115; the adjacent straight pipe sections b113b and c113c are fixedly connected via the large-diameter connecting pipe section 114; wherein the straight pipe sections a113a, b113b and c113c are any three adjacent straight pipe sections 113 among the multiple straight pipe sections 113.

[0058] In order to further improve the heating effect, the following structure is also provided in this embodiment:

[0059] The container shell 100 includes an end plate 101 adjacent to the branch oil outlet pipe 12 and the branch oil inlet pipe 13, and the plate surface of the end plate 101 is parallel to the axial direction of the branch oil outlet pipe 12; a buffer component 2 is fixedly connected to the end plate 101, and the hydrogen pipeline 200 is connected to the inner cavity of the buffer component 2, and the inner cavity of the buffer component 2 is connected to the interior of the container shell 100 through the strip hole 1011 opened on the end plate 101. The function of the buffer component 2 is to buffer the hydrogen entering through the hydrogen pipeline 200, so that the entering hydrogen enters the interior of the container shell 100 according to the predetermined position, as follows:

[0060] The buffer assembly 2 includes a sealing frame 21 and an end cover 22 fixed at one end of the sealing frame 21, and the other end of the sealing frame 21 is fixedly connected to the end plate 101; the sealing frame 21, the end cover 22 and the end plate 101 cooperate to form a sealed space; the hydrogen pipeline 200 is fixed on the end cover 22 and is connected to the above-mentioned sealed space; a recoil bowl 26 facing the hydrogen pipeline 200 is provided inside the sealing frame 21, and the recoil bowl 26 is fixedly connected to the end cover 22 through a connecting rod 261. The hydrogen entering the above-mentioned sealed space through the hydrogen pipeline 200 will first be buffered by the recoil bowl 26, so that the hydrogen can be dispersed into the above-mentioned sealed space.

[0061] Furthermore, the internal space of the sealing frame 21 (the sealed space mentioned above) is divided into a first chamber 24 and a second chamber 25 by a middle partition 23; the recoil bowl 26 is arranged inside the first chamber 24; a plurality of rows of through holes 231 are provided on the middle partition 23, and each row of through holes 231 is arranged in parallel and offset with the strip holes 1011. The parallel offset arrangement here means that each row of through holes 231 is parallel to the strip holes 1011, and vertically, each row of through holes 231 is arranged in offset with the strip holes 1011, so that the hydrogen passing through the through holes 231 will not directly pass through the strip holes 1011 into the interior of the container shell 100.

[0062] Furthermore, a semicircular sheet 27 is fixed between two adjacent strip holes 1011 on the end plate 101, the opening of the semicircular sheet 27 faces the middle partition plate 23, the length of the semicircular sheet 27 is greater than or equal to the length of the strip hole 1011, the through hole 231 is aligned with the semicircular sheet 27, and the strip hole 1011 is aligned with the gap between two adjacent branch oil pipes 12. In this way, the hydrogen passing through the through hole 231 will directly impact the interior of the semicircular sheet 27, and then enter the interior of the second chamber 25 through the semicircular sheet 27, and then enter the interior of the container shell 100 through the strip hole 1011. Since the strip hole 1011 is aligned with the gap between two adjacent branch oil pipes 12, the hydrogen will directly enter the gap between the two adjacent branch oil pipes 12. At this time, the adjacent two branch oil pipes 12 and the adjacent two branch oil inlet pipes 13 are transported with heat transfer oil, so that the branch oil pipes 12 and the branch oil inlet pipes 13 have a certain amount of heat, thereby achieving the preheating of the hydrogen. Heat, and, after multiple buffering by structures such as the recoil bowl 26 and the semicircular sheet 27, the flow rate of the hydrogen is slow, and the uniformity of the hydrogen passing through the strip hole 1011 is good, therefore, the preheating effect of the hydrogen being separated into the oil outlet pipe 12 and the oil inlet pipe 13 is good. Furthermore, it can be seen from the figure that the oil outlet pipe 12 and the oil inlet pipe 13 are both circular, therefore, when the hydrogen flows through the oil outlet pipe 12 and the oil inlet pipe 13, a part of the hydrogen will flow along the circumference of the oil outlet pipe 12 and the oil inlet pipe 13, the preheating effect is better, and at the same time, the hydrogen can also be dispersed to facilitate its entry into the interior of the multiple gaps 16.

[0063] A plurality of pads 3 are provided at the inner bottom of the container shell 100 for supporting the entire heating layer 1 and the hydrogen storage alloy sheet 300 .

[0064] A method for heating a hydrogen storage container, the method for heating a hydrogen storage container is based on the above-mentioned heating device for the hydrogen storage container, and comprises the following steps:

[0065] S1, the heat transfer oil heated to a predetermined temperature is transported and distributed to a plurality of branch oil inlet pipes 13 through the main oil inlet pipe 15, and the heat transfer oil in the branch oil inlet pipes 13 is then transported and distributed to each heat transfer tube 11 through the oil inlet end 111;

[0066] S2, the heat transfer oil at a predetermined temperature transfers heat to the hydrogen storage alloy sheet 300 through the heat transfer pipe 11 and the plane 116, so as to heat the hydrogen storage alloy sheet 300 to a predetermined temperature;

[0067] S3. When storing hydrogen, hydrogen enters the buffer assembly 2 through the hydrogen pipeline 200. The hydrogen first passes through the recoil bowl 26 for primary buffering and enters the first chamber 24. Then, the hydrogen passes through the through hole 231 on the middle partition plate 23 for secondary buffering and enters the interior of the second chamber 25. After passing through the through hole 231, the hydrogen impacts the interior of the semicircular sheet 27 for tertiary buffering, and then enters the gap between two adjacent branch oil outlet pipes 12 through the strip hole 1011 for preliminary preheating.

[0068] S4. The preliminarily preheated hydrogen is transported to various positions of the hydrogen storage alloy sheet 300 through the gap 16, and the hydrogen is further heated to the storage temperature during the process of passing through the gap 16.

[0069] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heating device for a hydrogen storage container, used for heating the stacked hydrogen storage alloy sheets in the container shell, characterized in that: It includes a heating layer, and each hydrogen storage alloy sheet is sandwiched with two heating layers; The container shell includes an end plate adjacent to the branch oil outlet pipe and the branch oil inlet pipe; A buffer component is fixedly connected to the end plate, the hydrogen pipeline is connected to the inner cavity of the buffer component, and the inner cavity of the buffer component is connected to the interior of the container shell through the strip hole opened on the end plate; when storing hydrogen, the hydrogen flows between two adjacent heating layers through the strip hole; The buffer assembly includes a sealing frame and an end cover fixed to one end of the sealing frame, and the other end of the sealing frame is fixedly connected to the end plate; The hydrogen pipeline is fixed to the end cover; A recoil bowl facing the hydrogen pipeline is arranged inside the sealing frame, and the recoil bowl is fixedly connected to the end cover through a connecting rod; The inner space of the sealing frame is divided into a first chamber and a second chamber by a middle partition; A recoil bowl is disposed inside the first chamber; A plurality of rows of through holes are provided on the middle partition, and each row of through holes is arranged parallel to and staggered with the strip holes; A semicircular piece is fixed between two adjacent strip holes on the end plate, the opening of the semicircular piece faces the middle partition plate, the length of the semicircular piece is greater than or equal to the length of the strip hole, the through hole is aligned with the semicircular piece, and the strip hole is aligned with the gap between two adjacent branch oil outlet pipes; The heating layer includes at least two heat transfer pipes for conveying heat transfer oil; the heat transfer pipes include an oil inlet end, an oil outlet end, a straight pipe section and a curved pipe section; wherein the oil inlet end of the heat transfer pipe is fixedly connected to the branch oil inlet pipe, and the oil outlet end of the heat transfer pipe is fixedly connected to the branch oil outlet pipe; The axial direction of the branch oil outlet pipe is parallel to the axial direction of the branch oil inlet pipe, and the axial direction of the branch oil outlet pipe is perpendicular to the length direction of the straight pipe section; The plate surface of the end plate is parallel to the axial direction of the branch oil outlet pipe; A plurality of branch oil outlet pipes extend through and extend to the outside of the container shell and are fixedly connected with the main oil outlet pipe; A plurality of branch oil inlet pipes extend through and extend to the outside of the container shell and are fixedly connected to the main oil inlet pipe; The oil inlet and outlet ends of two adjacent heating layers are located oppositely.

2. A heating device for a hydrogen storage container according to claim 1, characterized in that: The oil inlet end and the oil outlet end are respectively fixedly connected with the branch oil inlet pipe and the branch oil outlet pipe through the arc pipe.

3. A heating device for a hydrogen storage container according to claim 2, characterized in that: The curved pipe section includes a large-diameter connecting pipe section and a small-diameter connecting pipe section; The adjacent straight pipe sections a and b are fixedly connected via a small-diameter connecting pipe section; the adjacent straight pipe sections b and c are fixedly connected via a large-diameter connecting pipe section.

4. A heating device for a hydrogen storage container according to claim 3, characterized in that: The upper and lower sides of the heat transfer tube are both planes that fit the hydrogen storage alloy sheet. Two adjacent heat transfer tubes are arranged at an equal distance, and a gap for transporting hydrogen is formed between the two.

5. A heating device for a hydrogen storage container according to claim 4, characterized in that: A plurality of straight pipe sections are provided and arranged side by side with each other, and two adjacent straight pipe sections are connected through a curved pipe section; A plurality of straight pipe sections are arranged side by side and equidistantly to form a rectangular heating plate with a plurality of gaps, and the plate surface area of ​​the hydrogen storage alloy sheet is matched with the plate surface area of ​​the heating plate.

6. A method for heating a hydrogen storage container, characterized in that: The heating method of the hydrogen storage container is based on the heating device of the hydrogen storage container according to any one of claims 1 to 5, comprising the following steps: S1, the heat transfer oil heated to a predetermined temperature is transported to a plurality of branch oil inlet pipes through the main oil inlet pipe, and the heat transfer oil in the branch oil inlet pipes is then transported to each heat transfer pipe through the oil inlet end; S2, the heat transfer oil at a predetermined temperature transfers heat to the hydrogen storage alloy sheet through the heat transfer pipe and the plane to heat the hydrogen storage alloy sheet to a predetermined temperature; S3. When storing hydrogen, hydrogen enters the buffer assembly through the hydrogen pipeline. The hydrogen first passes through the recoil bowl for primary buffering and enters the first chamber. Then, it passes through the through hole on the middle partition for secondary buffering and enters the interior of the second chamber. After passing through the through hole, the hydrogen will impact the interior of the semicircular sheet for tertiary buffering, and then enter the gap between two adjacent oil outlet pipes through the strip hole for preliminary preheating. S4. The pre-heated hydrogen is transported to various positions of the hydrogen storage alloy sheet through the gaps, and the hydrogen is further heated to the storage temperature in the process of passing through the gaps.

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