Integrated on-site hydrolysis hydrogen production fuel cell carried power supply and working method thereof

Abstract

The invention discloses an integrated on-site hydrolysis hydrogen production fuel cell carried power supply and a working method thereof.The integrated on-site hydrolysis hydrogen production fuel cell carried power supply comprises a hydrogen production box and a main engine, the main engine comprises a fuel cell assembly, a cover plate in the hydrogen production box, a hydrogen generator and a water tank, the hydrogen generator is located in the water tank, and the cover plate is located at the top of the hydrogen generator; and a hydrogen outlet of the hydrogen generator is communicated with the fuel cell assembly. The power supply has the characteristics of high safety, stability in hydrogen production, convenience in fuel replacement, small size, light weight and low cost.

Description

Technical Field

[0001] The invention belongs to the technical field of portable power sources, and relates to a portable power source of a fuel cell for integrated on-site hydrogen production by water decomposition and a working method thereof. Background Art

[0002] In modern society, miniaturized and mobile electrical and electronic equipment are becoming increasingly popular, and the demand for mobile and portable power supplies is increasing rapidly, requiring a safe, efficient, environmentally friendly and lightweight power supply device.

[0003] A fuel cell is a highly efficient, environmentally friendly, low-noise, high-energy-density power generation device, while hydrogen energy is a clean, efficient, safe and sustainable secondary energy source. Hydrogen fuel cells that use hydrogen as a power generation fuel have broad prospects in the field of mobile and portable power sources.

[0004] Hydrogen in nature is usually combined with other elements to form compounds. Hydrogen needs to be produced through chemical, electrolytic and biological methods, and the produced hydrogen needs to be transported and stored. However, the above hydrogen production methods often rely on large and complex equipment, and there are harmful byproducts, which are difficult to be directly used for hydrogen fuel cells; the hydrogen storage and transportation process often requires high pressure or ultra-low temperature environment, which causes considerable energy loss, time consumption and investment costs.

[0005] Compared with large power sources, small mobile power sources are more mobile, have more diverse use environments, are more prone to irregular operations, and are more prone to danger when using traditional high-pressure hydrogen cylinders. Especially when soldiers use individual power sources, high-pressure hydrogen cylinders are easily violently exploded by violent impact.

[0006] In recent years, the on-site hydrolysis of alkaline metal hydrides and borohydrides to produce hydrogen has attracted increasing attention due to its high hydrogen storage density, high safety, high hydrogen purity, and low requirements for reaction conditions. It is considered to be very suitable as a hydrogen source for small mobile power sources.

[0007] At present, some soldiers, policemen and workers who work outdoors for a long time have a strong demand for mobile / portable power sources that can generate electricity stably for a long time, supply power on demand, and quickly replenish power. The hydrogen production device needs to be able to operate stably around the clock, the power supply operation is simple, and the size and weight are minimized. Summary of the invention

[0008] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide an integrated on-site hydrolysis hydrogen production fuel cell portable power supply and a working method thereof, which has the characteristics of high safety, stable hydrogen production, convenient fuel replacement, small size, light weight and low cost.

[0009] To achieve the above-mentioned purpose, the present invention discloses an integrated on-site hydrolysis hydrogen production fuel cell portable power supply, including a hydrogen production box and a host, the host including a fuel cell assembly, the hydrogen production box inner cover, a hydrogen generator and a water tank, the hydrogen generator is located in the water tank, the cover is located on the top of the hydrogen generator, and the hydrogen outlet of the hydrogen generator is connected to the fuel cell assembly.

[0010] Furthermore, three pipe interfaces are provided on the cover plate, and the three pipe interfaces are respectively connected to an air outlet joint, a water inlet joint and a water outlet joint through a guide block. The air outlet joint is connected to the fuel cell assembly, the water outlet joint is connected to the water tank through a water suction pipe, the outlet of the water outlet joint is connected to the water inlet joint through a water pump, and the water inlet joint is connected to the hydrogen generator.

[0011] Furthermore, the hydrogen generator comprises a flow guide device, a filter device and a fuel cylinder, wherein the flow guide device and the filter device are located inside the fuel cylinder; wherein the flow guide device comprises a water separator and a flow guide plate;

[0012] The water distributor is a flat plate with a water distribution channel and a water distribution hole; the upper surface of the guide plate is a second groove structure, the water distributor is embedded in the second groove structure on the upper surface of the guide plate, a guide hole is provided at a position on the guide plate corresponding to the water distribution hole, a hollow boss is provided on the lower surface of the water distributor opposite to the guide hole, the guide hole is connected with the hollow cavity of the boss, a water distribution needle is implanted in the boss, the water distribution needle is inserted into the fuel cylinder, and the hydrogen outlet of the fuel cylinder is connected with the gas outlet joint through a filtering device.

[0013] Furthermore, the filtering device includes a first filter and a second filter; the second filter includes a baffle cavity and a filter tube;

[0014] The first filter comprises an upper and lower filter plate, wherein a plurality of circular holes are arranged on the filter plate, wherein one circular hole corresponds to one reaction cylinder, a square filter membrane is arranged between the two filter plates, and a circular filter membrane is arranged in each circular hole of the filter plate of the lower layer;

[0015] The second filter includes a baffle cavity and a filter tube. The baffle cavity is a hollow cavity with an open upper end and a closed lower end. The filter tube is filled with gas filter material. The filter tube is vertically installed at the center of the baffle cavity. One end of the filter tube close to the baffle cavity is open, and the other end of the filter tube is connected to the gas outlet joint. The upper end of the baffle cavity and the cavity between the guide plate and the first filter are connected, so that the gas passing through the first filter enters the baffle cavity in the second filter.

[0016] Furthermore, the fuel cylinder includes a plurality of cylindrical reaction cylinders, the number of which is the same as the number of water distribution needles, wherein one water distribution needle corresponds to one reaction cylinder, the reaction cylinder is a hollow cylinder, the top of the reaction cylinder is open, the bottom of the reaction cylinder is closed, the interior of the reaction cylinder is loaded with hydrogen-producing solid fuel, and the lower side of the reaction cylinder is located in the water tank.

[0017] Furthermore, the upper and lower ends of the fuel cell assembly are respectively provided with end plates and electrode terminals, and the middle of the fuel cell assembly includes a plurality of stacked single cell assemblies;

[0018] The top of the end plate is provided with a hydrogen inlet, the gas outlet connector is communicated with the hydrogen inlet, and the bottom of the end plate is connected with the hydrogen connector.

[0019] Furthermore, the single cell assembly includes bipolar plates and membrane electrodes stacked in sequence.

[0020] Furthermore, the main engine also includes a control circuit board and a pressure safety device, the pressure safety device includes a pressure sensor, a hydrogen connector, an electromagnetic safety valve and a three-way valve, the pressure sensor is arranged on the control circuit board, the first end of the three-way valve is connected to the pressure sensor, the second end of the three-way valve is connected to the hydrogen connector, and the third end of the three-way valve is connected to the electromagnetic safety valve.

[0021] Furthermore, the host also includes a thermal management system, which includes a heating plate, an aluminum plate, a heat dissipation aluminum plate and a fan. The heating plate is attached to the heat dissipation aluminum plate. The aluminum plate is arranged on the lower wall of the side where the water tank in the hydrogen production box is attached to the host. The heat dissipation aluminum plates are perpendicular to each other. Among them, one heat dissipation aluminum plate is attached to the inside of the right side of the shell of the host, and the other heat dissipation aluminum plate is mounted above the fuel cell assembly. The fan is close to the back of the fuel cell assembly.

[0022] The present invention discloses a working method of a portable fuel cell power supply for integrated on-site hydrolysis hydrogen production, comprising the following steps:

[0023] The water in the water tank is transported to the water pump through the water suction pipe and the water outlet joint in turn, and then driven by the water pump, enters the water distributor through the water inlet joint and drips into each reaction cylinder respectively, undergoes hydrolysis reaction with the fuel in the reaction cylinder and generates hydrogen. The generated hydrogen rises from each reaction cylinder, passes through the first filter and enters the cavity between the bottom of the guide plate and the top of the filter, and flows into the bottom of the hydrogen production box through the deflection cavity of the second filter, then bends upward and is filtered through the gas filter material inside the filter tube, rises to the gas outlet joint and flows to the fuel cell assembly, hydrogen and oxygen participate in the electrochemical reaction to generate electricity, and when the fuel inside the fuel cylinder has reacted, open the cover plate, take out the guide device and the first filter, replace the fuel cylinder as a whole, and install the guide device, the first filter and the cover plate.

[0024] The present invention has the following beneficial effects:

[0025] In the specific operation of the integrated on-site hydrolysis hydrogen production fuel cell portable power supply and its working method described in the present invention, the fuel cylinder for producing hydrogen is placed in the hydrogen production box, and the water delivered by the water pump enters the hydrogen production box through the water inlet joint, and is evenly distributed to each reaction cylinder through the water divider and the guide plate in the guide device, and is hydrolyzed inside each reaction cylinder to produce hydrogen. The hydrogen produced in the reaction cylinder is filtered through the filter device to remove solid and liquid impurities therein, and is delivered to the fuel cell assembly through the gas outlet joint. The present invention can realize that the hydrogen produced by the hydrolysis reaction is directly provided to the fuel cell assembly, making the overall structure simpler and more compact, safe and efficient, and the hydrogen production is stable, small in size, light in weight, and low in cost. At the same time, when it is necessary to replace the fuel, the fuel cylinder as a whole is directly replaced, and the fuel replacement is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0027] Figure 1a An exploded view of the present invention;

[0028] Figure 1b It is a structural schematic diagram of the present invention;

[0029] Figure 2 is an exploded schematic diagram of the hydrogen production box 1;

[0030] Figure 3 is an exploded view of the interior of the hydrogen production box 1;

[0031] Figure 4 A schematic diagram of the horizontal through hole for heat dissipation of the fuel cartridge 123;

[0032] Figure 5 It is a schematic diagram of the hollow heat dissipation structure of the fuel cylinder 123;

[0033] Figure 6a The water distribution holes and flow channel layout diagram of the water distributor with the number of 4 being the power of 2;

[0034] Figure 6b The water distribution holes and flow channel layout diagram of the water distributor with the cube power of 2 being 8;

[0035] Figure 6c The layout diagram of the water distribution holes and flow channels of the water distributor with the number of 16 being the fourth power of 2;

[0036] Figure 6d The layout diagram of the water distribution holes and flow channels of the water distributor with the number of 32 being the fifth power of 2;

[0037] Figure 6eThe sixth power of 2 is 64, which is the layout diagram of the water distribution holes and flow channels of the water distributor;

[0038] Figure 7 is an exploded view of the first filter;

[0039] Figure 8 is a schematic diagram of the structure of the control circuit board 22;

[0040] Fig. 9 is a schematic structural diagram of a fuel cell assembly 25;

[0041] Fig.10 is a corresponding relationship diagram of various components in the pressure safety device 26;

[0042] Fig.11 It is a corresponding relationship diagram of various components in the thermal management system 27.

[0043] Among them, 1 is a hydrogen production box, 2 is a host, 11 is a cover plate, 12 is a hydrogen generator, 13 is a water tank, 14 is an air outlet joint, 15 is a water inlet joint, 16 is a water outlet joint, 21 is a shell, 22 is a control circuit board, 23 is an energy storage battery pack, 24 is a water pump, 25 is a fuel cell assembly, 26 is a pressure safety device, 27 is a thermal management system, 111 is a guide block, 112 is a water filling hole sealing cover, 121 is a guide device, 122 is a filtering device, 123 is a fuel cartridge, 131 is a water suction pipe, 211 is a front air inlet, 212 is an upper side air inlet, 213 is an outlet The gas port, 214 is the start switch button, 215 is the power connector, 216 is the charging interface, 217 is the discharge interface, 251 is the end plate, 252 is the electrode terminal, 253 is the single battery assembly, 261 is the pressure sensor, 262 is the hydrogen connector, 263 is the electromagnetic safety valve, 264 is the three-way valve, 271 is the heating plate, 272 is the aluminum plate, 273 is the heat dissipation aluminum plate, 274 is the fan, 1211 is the water distributor, 1212 is the guide plate, 1213 is the sealing gasket, 1221 is the first filter, 1222 is the deflection chamber, 1223 is the filter tube, and 1231 is the reaction cylinder. DETAILED DESCRIPTION

[0044] 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 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.

[0045] In the description of the present invention, it should be understood that the terms “include” and “comprises” indicate the presence of described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or collections thereof.

[0046] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0047] It should be further understood that the term "and / or" used in the present specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in the present invention generally indicates that the associated objects are in an "or" relationship.

[0048] It should be understood that, although the terms first, second, third, etc. may be used to describe preset ranges, etc. in the embodiments of the present invention, these preset ranges should not be limited to these terms. These terms are only used to distinguish preset ranges from each other. For example, without departing from the scope of the embodiments of the present invention, the first preset range may also be referred to as the second preset range, and similarly, the second preset range may also be referred to as the first preset range.

[0049] The word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0050] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can usually be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0051] Various structural schematic diagrams of the embodiments disclosed in the present invention are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0052] The present invention discloses an integrated on-site hydrolysis hydrogen production fuel cell portable power supply, wherein a fuel cell stack power supply host 2 and a hydrogen production device are assembled in coordination, and the hydrogen produced by the on-site hydrolysis hydrogen production device is directly supplied to the fuel cell stack power generation device.

[0053] Specifically, refer to Figure 1a to Figure 1b The integrated on-site hydrolysis hydrogen production fuel cell portable power supply of the present invention comprises a hydrogen production box 1 and a host 2;

[0054] refer to Figures 2 to 5 The hydrogen production box 1 is provided with a cover plate 11, a hydrogen generator 12 and a water tank 13. The hydrogen generator 12 is located in the water tank 13, the cover plate 11 is located on the top of the hydrogen generator 12, and the cover plate 11 is connected to the hydrogen generator 12 by bolts. At the same time, the cover plate 11 is connected to the top opening of the water tank 13 in a nested manner. The cover plate 11 is provided with three pipe interfaces, and the three pipe interfaces are respectively connected to the air outlet joint 14, the water inlet joint 15 and the water outlet joint 16 through the guide block 111. Among them, the cover plate 11 and the hydrogen generator 12 are placed inside the water tank 13, the cover plate 11 covers and is fixed on the top of the hydrogen generator 12, and the edge structure between the cover plate 11 and the hydrogen generator 12 is fixed by fastening bolts. The number of fastening bolts is set according to the sealing requirements, and each fastening bolt passes through the edge structure of the cover plate 11 and the hydrogen generator 12 respectively.

[0055] The top fastening bolts of the cover plate 11 are all provided with countersunk holes, and a water-adding through hole matched with the guide device 121 is opened on one side of the cover plate 11. The water-adding through hole passes through the hydrogen generator 12 and is connected with the water tank 13. The water-adding through hole of the cover plate 11 is a first groove structure, and a water-adding through hole sealing cover 112 is provided in the first groove structure. The water-adding through hole sealing cover 112 is made of soft material and is pressed into the first groove structure on the cover plate 11 by external force; a cross-shaped ventilation gap is provided on the water-adding through hole sealing cover 112, and the cross-shaped ventilation gap is small enough to prevent the water inside the water tank 13 from leaking out naturally, and at the same time balance the internal air pressure of the water tank 13 with the external connection.

[0056] The hydrogen generator 12 includes a flow guide device 121, a filter device 122 and a fuel cartridge 123. The flow guide device 121 and the filter device 122 are located in the fuel cartridge 123. The flow guide device 121 includes a water separator 1211, a flow guide plate 1212 and a sealing gasket 1213.

[0057] The water distributor 1211 is a flat plate with a water distribution channel and water distribution holes, and the material of the water distributor 1211 is a soft silicone material. The upper surface of the water distributor 1211 is provided with a grooved water distribution channel, and the water distribution channel is provided with interconnected water distribution holes. The number of water distribution holes is equal to the positive integer power of 2, including the second power 4, the third power 8, the fourth power 16, the fifth power 32, the sixth power 64, and so on. The positions of the water distribution channel and the water distribution holes are arranged symmetrically according to the center of the "I" shape to ensure that the distance from the main channel to each water distribution hole is equal, so as to achieve uniform water distribution. The example is as follows:

[0058] like Figure 6a As shown, the number of water distribution holes and flow channels of the square power of 2 is 4: the main flow channel of the water distribution channel is located in the center of the flat plate of the water divider 1211, the flow channel on the flat plate of the water divider 1211 is in the shape of an "I", and the four water distribution holes are respectively located at the ends of the "I".

[0059] like Figure 6b As shown, the water distribution holes and flow channels are arranged in a cube power of 2, which is 8: the main flow channel of the water distribution channel is located in the center of the flat plate of the water divider 1211, the flow channel on the flat plate of the water divider 1211 is composed of two "I"-shaped flow channels, and the 8 water distribution holes are respectively located at the ends of the two "I"-shaped channels.

[0060] like Figure 6c As shown, the fourth power of 2 is 16 in number for the water distribution holes and flow channel arrangement: the flow channel on the flat plate of the water distributor 1211 is composed of 5 "I"-shaped flow channels, and the 16 water distribution holes are respectively located at the ends of the 4 outermost "I"-shaped channels.

[0061] like Figure 6dAs shown, the number of water distribution holes and flow channels of 2 to the fifth power is 32: the flow channels on the flat plate of the water distributor 1211 are composed of 10 "I"-shaped flow channels, and the 32 water distribution holes are respectively located at the ends of the 8 outermost "I"-shaped channels.

[0062] like Figure 6e As shown, the sixth power of 2 is 64 water distribution holes and flow channel arrangements: the flow channels on the flat plate of the water distributor 1211 are composed of 21 "I"-shaped flow channels, and the 64 water distribution holes are respectively located at the very ends of the 16 outermost "I"-shaped channels.

[0063] The upper surface of the guide plate 1212 is a second groove structure, and the water divider 1211 is embedded in the second groove structure on the upper surface of the guide plate 1212. A guide hole is provided at a position corresponding to the water distribution hole on the guide plate 1212, and a hollow boss is provided on the lower surface of the water divider 1211 at the position opposite to the guide hole. The guide hole is connected to the hollow cavity of the boss, and a water distribution needle is implanted in the boss. The water distribution needle is a hollow structure, so that the liquid can flow out from the flow channel of the water divider 1211, the water distribution hole of the water divider 1211, the guide hole of the guide plate 1212, and finally from the water distribution needle of the guide plate 1212. The bottom of the guide plate 1212 is provided with an annular groove matched with the sealing gasket 1213, wherein the sealing gasket 1213 is embedded in the annular groove.

[0064] The filtering device 122 includes a first filter 1221 and a second filter.

[0065] refer to Figure 7 The first filter 1221 includes two layers of filter plates, one above the other, with a plurality of circular holes arranged on the filter plates, wherein one circular hole corresponds to one reaction cylinder 1231, a square filter membrane is arranged between the two layers of filter plates, a slot structure is arranged around the filter plates, and the two layers of filter plates are fixed by the slots to press the filter membranes between the two layers of filter plates, and a circular filter membrane is arranged in each circular hole of the filter plate of the lower layer, and a slot structure is arranged at the edge of the circular hole, and the edge of the circular filter membrane is located in the slot structure and is pressed by an annular clamp ring, and the pore size of the filter membrane is between 20 μm and 50 μm, and when the hydrogen generated in the fuel cylinder 123 rises rapidly, the filter membrane can play a role in slowing down and reducing the pressure of the gas, and block large solid particles to prevent the solid from being ejected from the fuel cylinder 123. A certain gap is left between the circular filter membrane of the lower layer and the square filter membrane of the upper layer to retain the solid particles brought out by the rising hydrogen.

[0066] The second filter includes a baffle cavity 1222 and a filter tube 1223. The baffle cavity 1222 is a hollow cavity with an opening at the upper end and a closed lower end. The filter tube 1223 is filled with a gas filtering material. The filter tube 1223 is vertically installed at the center of the baffle cavity 1222. One end of the filter tube 1223 close to the baffle cavity 1222 is open, and the other end of the filter tube 1223 is connected to the gas outlet joint 14. The upper end of the baffle cavity 1222 and the cavity between the guide plate 1212 and the first filter 1221 are connected, so that the gas passing through the first filter 1221 enters the baffle cavity 1222 in the second filter. The gas changes its flow direction inside the baffle cavity 1222, and solids and liquids with larger mass fall to the bottom of the baffle cavity 1222. The gas enters the filter tube 1223, and the impurities in the gas are adsorbed and blocked by the filtering material inside the filter tube 1223.

[0067] The fuel cylinder 123 includes a plurality of cylindrical reaction cylinders 1231, the number of which is the same as the number of water distribution needles, wherein one water distribution needle corresponds to one reaction cylinder 1231, the reaction cylinder 1231 is a hollow cylinder, the top of the reaction cylinder 1231 is open, and the bottom of the reaction cylinder 1231 is closed; the plane layout of the reaction cylinder 1231 matches the plane layout of the water distribution holes of the water distributor 1211, the center position of each reaction cylinder 1231 corresponds to the position of the water distribution hole of the water distributor 1211, and the reaction cylinder 1231 is loaded with hydrogen-producing solid fuel; adjacent reaction cylinders 1231 The reaction tubes 1231 are connected to each other so that all the reaction tubes 1231 are connected to form an integral structure. The corner area formed by adjacent reaction tubes 1231 is a hollow structure in the height direction of the reaction tubes 1231. The upper part of the hollow structure is closed, and the lower part is open toward the water tank 13 space. A plurality of horizontal connecting holes or connecting gaps are provided in the height direction between two adjacent rows of reaction tubes 1231 in at least one direction, so that the hollow cavity between the reaction tubes 1231 is connected to the water tank 13, and the water in the water tank 13 can convect between the water tank 13 and the hollow cavity between the reaction tubes 1231, thereby realizing heat exchange.

[0068] The water tank 13 is a cavity with an opening at the top. Circular holes are arranged at the four corners of the top of the water tank 13. A cylindrical open cavity is arranged on the inner wall of the shell 21 on the side of the water tank 13 in contact with the host 2. The water suction pipe 131 passes through the cylindrical open cavity and extends into the interior of the water tank 13.

[0069] refer to Figure 1a to Figure 1b The host 2 includes a housing 21 , a control circuit board 22 , an energy storage battery pack 23 , a water pump 24 , a fuel cell assembly 25 , a pressure safety device 26 and a thermal management system 27 .

[0070] Specifically, the shell 21 is provided with a front air inlet 211 and an upper side air inlet 212, the back of the shell 21 is provided with an air outlet 213, and the left side of the shell 21 is provided with a start switch button 214, a power connector 215, a charging interface 216 and a discharge interface 217.

[0071] refer to Figure 8 The side of the control circuit board 22 is connected to the charging interface 216 and the discharging interface 217 on the shell 21 , and a pressure sensor 261 is provided on the control circuit board 22 .

[0072] refer to Fig. 9 The upper and lower ends of the fuel cell assembly 25 are respectively provided with end plates 251 and electrode terminals 252, and the middle of the fuel cell assembly 25 includes a plurality of stacked single cell assemblies 253.

[0073] Specifically, a hydrogen inlet is provided at the top of the end plate 251 , the gas outlet connector 14 is connected to the hydrogen inlet, and the bottom end of the end plate 251 is connected to the hydrogen connector 262 .

[0074] The single cell assembly 253 includes bipolar plates and membrane electrodes stacked in sequence.

[0075] refer to Fig.10 The pressure safety device 26 includes a pressure sensor 261, a hydrogen connector 262, an electromagnetic safety valve 263 and a three-way valve 264.

[0076] Specifically, the pressure sensor 261 is arranged on the control circuit board 22, the first end of the three-way valve 264 is connected to the pressure sensor 261, the second end of the three-way valve 264 is connected to the hydrogen connector 262, and the third end of the three-way valve 264 is connected to the electromagnetic safety valve 263.

[0077] The three-way valve 264 is connected to the hydrogen connector 262, and transmits the pressure signal to the pressure sensor 261. After receiving the signal, the pressure sensor 261 detects the hydrogen pressure in the fuel cell assembly 25 and converts the pressure signal into an electrical signal. When the pressure is too high, the pressure sensor 261 transmits the electrical signal to the electromagnetic safety valve 263 through the three-way valve 264, and the electromagnetic safety valve 263 discharges the hydrogen and excess water from the gas outlet 213 to maintain the pressure balance in the fuel cell assembly 25.

[0078] refer to Fig.11The thermal management system 27 includes a heating plate 271, an aluminum plate 272, a heat dissipation aluminum plate 273 and a fan 274. The heating plate 271 is attached to the heat dissipation aluminum plate 273, and the aluminum plate 272 is arranged on the lower wall of the side where the water tank 13 in the hydrogen production box 1 and the host 2 are attached. The heat dissipation aluminum plates 273 are perpendicular to each other, and one heat dissipation aluminum plate 273 is attached to the inside of the right side of the housing 21 of the host 2, and the other heat dissipation aluminum plate 273 is mounted above the fuel cell assembly 25, and the fan 274 is closely attached to the back of the fuel cell assembly 25.

[0079] The working process of the present invention is:

[0080] Before use, open the water-adding hole sealing cover 112, add water to the water tank 13 from the water-adding hole, and reinstall the water-adding hole sealing cover 112. When producing hydrogen, the water in the water tank 13 is transported to the water pump 24 through the water suction pipe 131 and the water outlet joint 16 in turn, and then driven by the water pump 24, enters the main flow channel in the center of the water distributor 1211 through the water inlet joint 15, and enters the various water distribution holes at the end of the "I"-shaped flow channel and the guide holes of the guide plate 1212 after being evenly distributed by the water distributor 1211, and finally flows out from the water distribution needle of the guide plate 1212, and drips into each reaction cylinder 1231 respectively, and undergoes a hydrolysis reaction with the fuel in the reaction cylinder 1231 to produce hydrogen. The generated hydrogen rises from each reaction tube 1231, passes through the two layers of filter membrane of the first filter 1221, enters the cavity between the bottom of the guide plate 1212 and the top of the filter, and flows into the bottom of the hydrogen production box 1 through the baffle cavity 1222 of the second filter, then bends upward and is filtered through the gas filter material inside the filter tube 1223, rises to the gas outlet joint 14 and flows to the fuel cell assembly 25. At the same time, the outside air enters the fuel cell assembly 25 through the front air inlet 211 and the upper side air inlet 212, and hydrogen and oxygen participate in the electrochemical reaction to generate electricity. When the fuel inside the fuel cartridge 123 has reacted, open the cover plate 11 of the hydrogen production box 1, remove the guide device 121 and the first filter 1221, replace the fuel cartridge 123 as a whole, and install the guide device 121, the first filter 1221 and the cover plate 11, and normal hydrogen production and power generation can be restored.

[0081] In the thermal management system 27, when the temperature of the energy storage battery pack 23, the control circuit board 22 and other components in the host 2 is too high, air enters the gaps between the batteries of the energy storage battery pack 23 and the surface of the control circuit board 22 from the air inlet 212 on the upper side of the shell 21 to dissipate heat for the energy storage battery pack 23 and the control circuit board 22, then enters the fuel cell assembly 25 to undergo electrochemical reactions, and finally is discharged from the air outlet 213 via the fan 274. The water in the water tank 13 flows through the hollow gaps or heat dissipation horizontal through holes between the reaction cylinders 1231 to absorb the heat generated by the hydrogen production reaction, and the heat is transferred to the heat dissipation aluminum plate 273 by the aluminum sheet 272 attached to the wall of the water tank 13. The air enters from the front air inlet 211 of the shell 21, exchanges heat with the heat dissipation aluminum plate 273, and is discharged from the air outlet 213 via the fan 274. When the external environment temperature is low, the heating plate 271 starts to work to heat the heat dissipation aluminum plate 273, and the heat dissipation aluminum plate 273 transfers heat to the hydrogen production box 1 and the air. When the heated air diffuses into the fuel cell assembly 25 to participate in the reaction, the temperature of the fuel cell assembly 25 can be increased.

[0082] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and disclosure of the invention. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0083] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

[0084] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A portable fuel cell power source for integrated on-site hydrolysis hydrogen production, characterized in that: The invention comprises a hydrogen production box (1) and a main unit (2), wherein the main unit (2) comprises a fuel cell assembly (25), and the hydrogen production box (1) is provided with a cover plate (11), a hydrogen generator (12) and a water tank (13), wherein the hydrogen generator (12) is located in the water tank (13), the cover plate (11) is located on the top of the hydrogen generator (12), and the hydrogen outlet of the hydrogen generator (12) is connected to the fuel cell assembly (25).

2. The integrated on-site water splitting hydrogen production fuel cell portable power source according to claim 1 is characterized in that: The cover plate (11) is provided with three pipeline interfaces, and the three pipeline interfaces are respectively connected to an air outlet joint (14), a water inlet joint (15) and a water outlet joint (16) through a guide block (111); the air outlet joint (14) is connected to a fuel cell assembly (25); the water outlet joint (16) is connected to a water tank (13) through a water suction pipe (131); the outlet of the water outlet joint (16) is connected to the water inlet joint (15) through a water pump (24); and the water inlet joint (15) is connected to a hydrogen generator (12).

3. The integrated on-site water splitting hydrogen production fuel cell portable power source according to claim 2 is characterized in that: The hydrogen generator (12) comprises a flow guide device (121), a filter device (122) and a fuel cylinder (123), wherein the flow guide device (121) and the filter device (122) are located in the fuel cylinder (123); wherein the flow guide device (121) comprises a water separator (1211) and a flow guide plate (1212); The water distributor (1211) is a flat plate with a water distribution channel and a water distribution hole. The upper surface of the guide plate (1212) is a second groove structure. The water distributor (1211) is embedded in the second groove structure on the upper surface of the guide plate (1212). A guide hole is provided at a position on the guide plate (1212) corresponding to the water distribution hole. A hollow boss is provided on the lower surface of the water distributor (1211) at a position directly opposite to the guide hole. The guide hole is connected to the hollow cavity of the boss. A water distribution needle is implanted in the boss. The water distribution needle is inserted into the fuel cartridge (123). The hydrogen outlet of the fuel cartridge (123) is connected to the gas outlet connector (14) via the filter device (122).

4. The integrated on-site hydrolysis hydrogen production fuel cell portable power source according to claim 3 is characterized in that: The filtering device (122) comprises a first filter (1221) and a second filter; the second filter comprises a baffle cavity (1222) and a filtering tube (1223); The first filter (1221) comprises an upper and lower filter plate, wherein a plurality of circular holes are arranged on the filter plate, wherein one circular hole corresponds to one reaction cylinder (1231), a square filter membrane is arranged between the two filter plates, and a circular filter membrane is arranged in each circular hole in the filter plate of the lower layer; The second filter comprises a baffle cavity (1222) and a filter tube (1223); the baffle cavity (1222) is a hollow cavity with an open upper end and a closed lower end; the filter tube (1223) is filled with a gas filter material; the filter tube (1223) is vertically mounted at the center of the baffle cavity (1222); one end of the filter tube (1223) close to the baffle cavity (1222) is open; the other end of the filter tube (1223) is connected to a gas outlet joint (14); the upper end of the baffle cavity (1222) and the cavity between the guide plate (1212) and the first filter (1221) are in communication, so that the gas that has passed through the first filter (1221) enters the baffle cavity (1222) in the second filter.

5. The integrated on-site hydrolysis hydrogen production fuel cell portable power source according to claim 4 is characterized in that: The fuel cylinder (123) comprises a plurality of cylindrical reaction cylinders (1231), wherein the number of the reaction cylinders (1231) is the same as the number of the water distribution needles, wherein one water distribution needle corresponds to one reaction cylinder (1231), the reaction cylinder (1231) is a hollow cylinder, the top of the reaction cylinder (1231) is open, the bottom of the reaction cylinder (1231) is closed, the interior of the reaction cylinder (1231) is loaded with hydrogen-producing solid fuel, and the lower side of the reaction cylinder (1231) is located in the water tank (13).

6. The integrated on-site hydrogen production fuel cell portable power source according to claim 5 is characterized in that: The upper and lower ends of the fuel cell assembly (25) are respectively provided with end plates (251) and electrode terminals (252), and the middle of the fuel cell assembly (25) includes a plurality of stacked single cell assemblies (253); A hydrogen inlet is provided at the top of the end plate (251), the gas outlet connector (14) is connected to the hydrogen inlet, and the bottom of the end plate (251) is connected to the hydrogen connector (262).

7. The integrated on-site hydrolysis hydrogen production fuel cell portable power source according to claim 5, characterized in that: The single cell assembly (253) comprises bipolar plates and membrane electrodes which are stacked in sequence.

8. The integrated on-site hydrogen production fuel cell portable power source according to claim 5, characterized in that: The host (2) further comprises a control circuit board (22) and a pressure safety device (26); the pressure safety device (26) comprises a pressure sensor (261), a hydrogen connector (262), an electromagnetic safety valve (263) and a three-way valve (264); the pressure sensor (261) is arranged on the control circuit board (22); a first end of the three-way valve (264) is connected to the pressure sensor (261); a second end of the three-way valve (264) is connected to the hydrogen connector (262); and a third end of the three-way valve (264) is connected to the electromagnetic safety valve (263).

9. The integrated on-site water splitting hydrogen production fuel cell portable power source according to claim 8 is characterized in that: The host (2) also includes a thermal management system (27), which includes a heating plate (271), an aluminum plate (272), a heat dissipation aluminum plate (273) and a fan (274). The heating plate (271) is attached to the heat dissipation aluminum plate (273), the aluminum plate (272) is arranged on the lower wall surface of the side where the water tank (13) in the hydrogen production box (1) and the host (2) are attached, and the heat dissipation aluminum plates (273) are perpendicular to each other, wherein one heat dissipation aluminum plate (273) is attached to the inside of the right side of the housing (21) of the host (2), and another heat dissipation aluminum plate (273) is mounted above the fuel cell assembly (25), and the fan (274) is closely attached to the back of the fuel cell assembly (25).

10. A method for operating the portable power source of a fuel cell for integrated on-site hydrogen production by hydrolysis as claimed in claim 5, characterized in that: The following steps are involved: The water in the water tank (13) is sequentially transported to the water pump (24) through the water suction pipe (131) and the water outlet joint (16), and then driven by the water pump (24), enters the water distributor (1211) through the water inlet joint (15), and drips into each reaction tube (1231), undergoes a hydrolysis reaction with the fuel in the reaction tube (1231) and generates hydrogen. The generated hydrogen rises from each reaction tube (1231), passes through the first filter (1221), enters the cavity between the lower part of the guide plate (1212) and the upper part of the first filter (1221), and passes through the second filter (1221). The gas flows from the baffle cavity (1222) of the device to the bottom of the hydrogen production box (1), then bends upward to be filtered by the gas filter material inside the filter tube (1223), rises to the gas outlet joint (14) and flows to the fuel cell assembly (25), and the hydrogen and oxygen participate in the electrochemical reaction to generate electrical energy. When the fuel inside the fuel cartridge (123) has reacted, the cover plate (11) is opened, the flow guide device (121) and the first filter (1221) are taken out, the fuel cartridge (123) is replaced as a whole, and the flow guide device (121), the first filter (1221) and the cover plate (11) are installed.

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