Zero electricity starting device for hydrogen energy portable power supply

Abstract

This invention discloses a zero-battery start-up device for a portable hydrogen power supply, comprising a manual braking mechanism, a water injection mechanism, and a water circuit integrated switching mechanism. The water circuit integrated switching mechanism has an inlet connected to a water tank, a first outlet connected to a reaction chamber, a second outlet connected to the inlet of a water pump, and a third outlet connected to the inlet / outlet of the water injection mechanism. The manual braking mechanism is configured to draw and store a fixed amount of water from the water tank via the water circuit integrated switching mechanism, and then pressurize and inject the stored fixed amount of water into the reaction chamber via the same mechanism. This invention deeply integrates the zero-battery emergency start-up function with the existing conventional water supply circuit, allowing the manual and electric water injection paths to share some piping. When the lithium battery of the portable hydrogen power supply is completely depleted, the user only needs to operate the manual braking mechanism to drive the water injection mechanism to automatically draw water from the water tank and precisely inject it into the reaction chamber.

Description

Technical Field

[0001] This invention relates to the field of portable hydrogen power supply technology, and in particular to a zero-power start-up device for portable hydrogen power supplies. Background Technology

[0002] Hydrogen energy, as a clean and efficient secondary energy source, has shown great application potential in the field of portable power supplies. Portable hydrogen fuel cell power supplies typically employ a hybrid power supply architecture combining hydrogen fuel cells and lithium-ion batteries. The lithium-ion battery pack provides the power required for startup and operation of core components, especially powering the power management system, control system, and key auxiliary equipment (such as water pumps) of the hydrogen production unit.

[0003] The hydrogen production unit is the core of this type of power source. It typically includes a water tank, a reaction chamber containing solid hydrogen storage materials (such as aluminum hydride, magnesium hydride, etc.), and an electric water pump that meteredly pumps water from the tank to the reaction chamber. In normal operation, the electric water pump starts, injecting water into the reaction chamber. The water undergoes a controlled chemical reaction with the hydrogen storage materials, releasing hydrogen gas. The hydrogen gas is then transported to the hydrogen fuel cell stack to generate electricity. Part of the generated electricity powers the load, and the other part charges the lithium battery to maintain the system's operation.

[0004] However, this existing architecture, which relies on electricity for startup, has a fundamental flaw: when the lithium battery is completely depleted (i.e., in a "zero-charge" state) due to prolonged inactivity, over-discharge, or extreme environments, the entire system will be paralyzed. Specifically, the water pump cannot start due to power loss, preventing water from being injected into the reaction chamber. The reaction chamber, lacking the reaction medium (water), cannot produce hydrogen, causing the hydrogen fuel cell stack to stop generating electricity due to the lack of a hydrogen source. Consequently, the entire system cannot provide initial charging for the lithium battery, creating a zero-charge dead loop. At this point, the power source completely loses its ability to supply electricity externally, failing to meet the core requirement of immediate and reliable power supply in scenarios without external power grid support, such as emergency rescue and outdoor operations.

[0005] To address this issue, existing technologies have proposed several solutions. For example, Chinese patent CN223436526U discloses an outdoor emergency power supply that adds dry cell batteries as a backup starting power source. However, such solutions still fundamentally rely on pre-set power, the backup power source itself is at risk of running out, and it increases the system's complexity, cost, and maintenance requirements. Another solution proposes using an external power source (such as a power bank) to temporarily power the system to start the water pump, but this violates the principle of portable power supplies operating independently in environments without external power, and requires users to carry additional equipment, reducing ease of use and emergency response speed.

[0006] In summary, existing portable hydrogen-powered power supplies generally lack a truly independent, reliable, and externally energy-free emergency start-up mechanism when the lithium battery is at zero charge. The core contradiction lies in the fact that system startup depends on electrical energy, while the generation of electrical energy depends on successful system startup. Designing a simple, easy-to-operate, externally power-free mechanical zero-charge start-up device that can be seamlessly integrated into the existing "water tank-pump-reaction chamber" water supply architecture, thereby completely breaking the aforementioned vicious cycle, has become a pressing technical challenge in this field. Summary of the Invention

[0007] The technical problem solved by the present invention is to provide a zero-power start-up device for a portable hydrogen energy power supply.

[0008] This application provides a zero-power start-up device for a portable hydrogen power supply, applicable to a portable hydrogen power supply including a water tank, a reaction chamber, and a water pump, comprising: The manual braking mechanism can be operated manually by the user. The water injection mechanism is mechanically linked to the manual braking mechanism. The water circuit integrated switching mechanism has its inlet end connected to the water tank, its first outlet end connected to the reaction tank, its second outlet end connected to the water pump inlet, and its third outlet end connected to the inlet / outlet of the water storage and injection mechanism. The manual braking mechanism is configured to drive the water storage and injection mechanism to perform the following cycle through user operation: drawing and storing a fixed amount of water from the water tank through the water circuit integrated switching mechanism, and injecting the stored fixed amount of water into the reaction chamber under pressure through the water circuit integrated switching mechanism.

[0009] Furthermore, the waterway integrated switching mechanism is configured to have two operating modes: In normal mode, when the water pump is powered on, the water flow path is from the water tank through the water circuit integrated switching mechanism to the water pump, and then through the water circuit integrated switching mechanism to the reaction chamber, and is isolated from the water flow path by the water storage injection mechanism; In zero-power mode, when the water pump is de-energized and not working, in response to the pumping action of the water storage and injection mechanism, the water flow path is from the water tank through the water circuit integrated switching mechanism to the water storage and injection mechanism; in response to the water injection action of the water storage and injection mechanism, the water flow path is from the water storage and injection mechanism through the water circuit integrated switching mechanism to the reaction chamber.

[0010] Furthermore, the waterway integrated switching mechanism includes multiple unidirectional flow guiding elements, and the conduction direction of the unidirectional flow guiding elements is configured as follows: In the zero-power mode, water is allowed to flow unidirectionally from the water tank into the water storage and injection mechanism, and water is allowed to flow unidirectionally from the water storage and injection mechanism into the reaction chamber. In the conventional mode, water is allowed to flow unidirectionally into the reaction chamber from the water pump side; Furthermore, it prevents water from flowing between the water storage injection mechanism and the water pump.

[0011] Furthermore, the manual braking mechanism includes a button assembly and an elastic reset assembly; the water injection mechanism includes a cylindrical cavity, a piston slidably sealed within the cylindrical cavity, and a transmission rod fixedly connected to the piston; the transmission rod is linked to the button assembly; when the button assembly is pressed, the transmission rod drives the piston to move towards the bottom of the cylindrical cavity to perform a water injection action; when the button assembly is released, it resets under the action of the reset spring assembly, and the transmission rod drives the piston to move towards the top of the cylindrical cavity to perform a water pumping action.

[0012] Furthermore, the integrated water circuit switching mechanism includes a first diversion connector, a second confluence connector, and a third control connector; The first port of the first diverter is connected to the water tank, the second port is connected to the inlet of the water pump, and the third port is connected to the inlet of the first check valve. The first port of the second manifold is connected to the outlet of the first check valve, the second port is connected to the inlet / outlet of the water storage and injection mechanism, and the third port is connected to the inlet of the second check valve. The first port of the third control connector is connected to the outlet of the water pump through the third check valve, the second port is connected to the outlet of the second check valve, and the third port is connected to the reaction chamber. Wherein, the conduction direction of the first check valve is from the first diverter to the third control connector; the conduction direction of the second check valve is from the third control connector to the second manifold; and the conduction direction of the third check valve is from the pump side to the second manifold.

[0013] Furthermore, a breather valve for balancing pipeline pressure is also installed on the pipeline between the outlet of the water pump and the inlet of the third one-way valve.

[0014] Furthermore, the effective volume of the water injection mechanism is designed to accommodate the minimum amount of water required to activate the hydrogen material within the reaction chamber.

[0015] Furthermore, the water tank and the reaction tank are integrated into a single detachable tank module, and the water circuit integration switching mechanism and the water storage and injection mechanism are installed on the tank module or inside the power supply housing adjacent to it.

[0016] Furthermore, the bottom of the tank module is provided with a detachable bottom cover, and the top of the water tank is provided with an openable sealed water inlet.

[0017] This application provides a portable hydrogen-powered power supply, including a hydrogen production and power generation unit, an energy storage and management unit, and a zero-power start-up device for the portable hydrogen-powered power supply; the hydrogen production and power generation unit includes a water tank, a reaction tank, and a water pump; the energy storage and management unit includes a lithium battery and a power management controller; the zero-power start-up device is used to manually start the hydrogen production and power generation unit when the lithium battery is depleted.

[0018] Compared with existing technologies, this invention deeply integrates the zero-battery emergency start function with the original conventional water supply circuit (water tank-water pump-reaction chamber), allowing the manual water injection path and the electric water injection path to share some pipelines (such as the water injection pipeline that is finally injected into the reaction chamber). It also uses fluid direction control elements (such as one-way valves) to achieve automatic switching and isolation between the two modes. When the lithium battery of the portable hydrogen power supply is completely depleted, the user only needs to operate the manual braking mechanism to drive the water storage injection mechanism to complete the entire process of automatically drawing water from the water tank and accurately injecting water into the reaction chamber. This process does not require the participation of power management systems, electric water pumps and other power-consuming components, fundamentally breaking the vicious cycle in existing technologies where the water pump does not work due to the lithium battery being depleted, the water pump does not work, water cannot be injected to produce hydrogen, and the lithium battery cannot be charged due to the inability to produce hydrogen, thus ensuring reliable start-up of the power supply under extreme conditions. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention.

[0020] Figure 1 This is a schematic diagram of the structure of the portable hydrogen-powered power supply of the present invention; Figure 2 This is an internal structural diagram of the electrical compartment of the present invention; Figure 3 This is a schematic diagram of the modular and split structure of the portable hydrogen energy power supply of the present invention. Figure 4 This is a schematic diagram of the hydrogen release chamber of the present invention; Figure 5 This is a schematic diagram of the reaction chamber and water tank assembly of the present invention; Figure 6 This is a schematic diagram of the water pump assembly of the present invention; Figure 7 This is a schematic diagram of the zero-power start-up mechanism of the present invention; Figure 8This is a schematic diagram of the manual braking mechanism and the water injection mechanism of the present invention; Figure 9 This is a schematic diagram of the three-way valve of the present invention; Figure 10 This is a schematic diagram of the zero-power start-up device for a portable hydrogen-powered power supply of the present invention.

[0021] The reference numerals in the attached figures include: 100. Electrical compartment; 110. Fuel cell system; 111. Fuel cell stack; 112. Cooling fan; 113. Hydrogen delivery pipeline; 120. Compartment cover; 130. Control valve; 140. Lithium battery pack; 150. Control board module; 200. Hydrogen release compartment; 210. Reactor compartment and water compartment assembly; 211. Compartment body; 212. Reactor compartment water inlet connector; 213. Water plug; 214. Crown spring male; 215. Reactor compartment water outlet connector; 216. Bottom cover; 217. Water injection pipe; 218. Gas outlet; 220. Water pump assembly; 221. Water pump; 22 2. Breathing valve; 223. Pump compartment cover; 224. Pump mounting plate; 230. Zero-power start mechanism; 231. Manual braking mechanism; 2311. Button body; 2312. Return spring; 2313. Spring cavity; 232. Water injection mechanism; 2321. Piston; 2322. Push rod; 2323. Water flow cavity; 233. First tee connector; 234. Second tee connector; 235. Third tee connector; 236. Third check valve; 237. First check valve; 238. Second check valve; 239. Water injection pipeline. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0023] like Figure 1 , Figure 3 As shown in the figure, the portable hydrogen-powered power supply provided in this embodiment of the invention has the following specific structure: The entire power supply adopts a modular design with upper and lower compartments, which facilitates production, assembly, and maintenance. Specifically, it includes:

[0024] The electrical compartment 100 at the top integrates electrical functions such as power generation, energy storage and management, and output control; it is a relatively independent module.

[0025] The hydrogen release chamber 200 below integrates all fluid processing functions, including hydrogen production and water supply (both conventional and emergency). It is a consumable module that can be completely disassembled and replaced.

[0026] The two are quickly connected via a gas interface (the outlet 218 of the hydrogen release chamber 200 and the inlet of the electrical chamber 100). When the solid hydrogen material in the hydrogen release chamber 200 is exhausted or needs maintenance, it can be removed and replaced or maintained as a whole, while the electrical chamber 100 can be reused.

[0027] The specific structure of the electrical compartment 100 is as follows: like Figure 2 As shown, the electrical compartment 100 is enclosed by a cover 120, and its interior mainly contains: Fuel cell system 110: As the core power generation component, it mainly includes a hydrogen fuel cell stack 111, which receives hydrogen from the hydrogen release chamber 200 through a hydrogen delivery pipeline 113 and generates electricity through an electrochemical reaction. The waste heat generated by the hydrogen fuel cell stack 111 is cooled by forced convection cooling by a cooling fan 112 to ensure the operating temperature. The positive and negative output terminals of the stack 111 are connected to the control board module 150.

[0028] Control valve 130: including hydrogen inlet solenoid valve, exhaust solenoid valve, pressure sensor, etc. (not shown in the figure), is used to precisely control the flow rate and pressure of hydrogen entering the hydrogen fuel cell stack 111 and the exhaust gas emission, all of which are controlled by control board module 150.

[0029] Lithium battery pack 140: Composed of multiple lithium batteries connected in series and parallel, it serves as the system's energy buffer unit and auxiliary equipment power source, while also storing surplus electrical energy generated by the hydrogen fuel cell.

[0030] The control board module 150, the core of the power management system (PMS), integrates an MCU (microcontroller), voltage / current detection circuit, charging management circuit, electric pump drive circuit, fan drive circuit, valve drive circuit, and DC-DC conversion circuit. It is responsible for monitoring the voltage and status of the lithium battery pack 140, controlling the start and stop of the hydrogen fuel cell, managing external power supply (through a user interface such as USB or DC output port), and executing one of the core logics of this application—allowing or prompting the user to use the zero-charge start mechanism 230 when zero charge of the lithium battery is detected.

[0031] The specific structure of the hydrogen release chamber 200 is as follows: like Figure 4 As shown, the hydrogen release chamber 200 is the physical carrier of the zero-power start-up device of the present invention, and mainly contains: (1) Reaction chamber and water tank assembly 210: This is the core of the hydrogen production module, and it adopts an integrated design to reduce leakage points and save space, such as Figure 5 As shown, it includes: 1) Chamber 211: This is a sealed container made of engineering plastic or metal, internally divided into two independent chambers by a partition. The upper chamber is a water chamber for storing deionized water; the lower chamber is a reaction chamber for filling with hydrogen-fixing materials. This integrated design ensures that water from the water chamber can only enter the reaction chamber through controlled pipelines.

[0032] 2) Bottom cover 216: It is detachably installed at the bottom of the chamber 211 by means of buckle, screw or rotation locking. Opening the bottom cover 216 allows filling or replacing hydrogen solid materials (such as aluminum hydride granules or tablets) into the reaction chamber.

[0033] 3) Water injection pipe 217 / reaction chamber water inlet connector 212: Located on the upper side wall or top of the reaction chamber, used to connect the water flow from the water injection pipe 239 and introduce water into the reaction chamber.

[0034] 4) Water tank outlet connector 215: Located at the bottom of the water tank, it is the only outlet of the water tank and is connected to the first port of the first tee connector 233 (i.e. the first diverter connector) through a pipeline.

[0035] 5) Gas outlet 218: Located at the top of the chamber 211, it is both the gas outlet after hydrogen production in the reaction chamber and connected to the hydrogen pipeline 113; it also serves as the water inlet for replenishing deionized water to the water chamber, and is normally sealed by a sealing cap.

[0036] 6) Water-based glue plug 213, crown spring male 214, etc. are auxiliary components used for pipe connection and sealing.

[0037] (2) Pump assembly 220: Provides the power water source in normal mode, such as Figure 6 As shown, it includes: 1) Water pump 221: Miniature electric water pump 221, fixed on water pump mounting plate 224.

[0038] 2) Breathing valve 222: Connected to the outlet of water pump 221, used to balance the pressure fluctuations caused by the start-up and shutdown of water pump 221 and pulsation, and to protect the pipeline.

[0039] 3) Pump compartment cover plate 223: Used to enclose and protect the pump 221 assembly.

[0040] (3) Zero-power start mechanism 230: All its components are integrated and installed within the shell frame of the hydrogen release chamber 200, such as Figure 7 As shown, it consists of three core components: a manual actuation mechanism, a water storage and injection mechanism 232, and a water circuit integration switching mechanism.

[0041] 1) Manual braking mechanism 231: In this embodiment, it is embodied as a spring-loaded mechanical button, such as... Figure 8As shown, it includes a button body 2311 (constituting the main body of the button assembly) that is directly operated by the user, a helical reset spring 2312 (constituting the elastic reset assembly) that provides reset force, and a spring cavity 2313 (guide cylinder) for precise guidance and fixed installation, the guide cylinder being fixed inside the hydrogen release chamber 200 housing.

[0042] 2) Water injection mechanism 232: In this embodiment, it is embodied as a syringe-type water storage chamber: it is a manual pump, such as... Figure 8 As shown, the device comprises a water flow chamber 2323 (i.e., a cylindrical chamber) made of transparent or opaque material, a piston 2321 precisely fitted thereto, and a rigid push rod 2322 (which functions as a transmission rod) connecting the piston 2321 and the button. One end of the push rod 2322 is fixed to the piston 2321, and the other end is fixedly connected to the embedded end of the button body 2311. A sealing ring is fitted on the piston 2321 to ensure the sealing of the chamber wall. The effective volume of the water injection mechanism 232 is precisely calculated and designed to accommodate the minimum amount of water required to activate the hydrogen-fixing material in the reaction chamber.

[0043] 3) Integrated Water Circuit Switching Mechanism: This is key to intelligently switching between "normal" and "zero-power" operating modes, achieved through a specific flow channel design and one-way valve layout. Specifically, it includes: Connection connectors: First tee connector 233 (first shunt connector), second tee connector 234 (second manifold connector), and third tee connector 235 (third control connector), all of which are standard tee pipe connectors made of plastic or metal.

[0044] One-way flow control elements: three one-way valves, namely the first one-way valve 237, the second one-way valve 238, and the third one-way valve 236, are all miniature one-way valves with internal springs and valve cores, allowing fluid to pass through in only one direction. Specifically, the first one-way valve 237 is directed from the first three-way connector 233 to the third three-way connector 235; the second one-way valve 238 is directed from the third three-way connector 235 to the second three-way connector 234; and the third one-way valve 236 is directed from the pump 221 side to the second three-way connector 234.

[0045] All joints, valves, and water injection pipes 239, such as PU and silicone tubes, are connected using quick-connect fittings. This connection method ensures reliable sealing, quick installation, and allows for rapid disconnection or connection to the main gas interface when the hydrogen release chamber 200 is separated from the electrical chamber 100 as a single module, without affecting the integrity of the water circuit of the internal zero-power start mechanism 230.

[0046] Specifically, the manual braking mechanism 231 in this application is not limited to a linearly pressed button, but can also be a knob (driving a screw to push the piston 2321), a lever, a lever, or other mechanisms that can convert human power into reciprocating linear motion. The water storage and injection mechanism 232 is not limited to the piston 2321 cylinder structure, but can also be a bellows, an air bladder, or other variable-volume container, generating water intake and injection actions through squeezing and releasing. The number and connection logic of the one-way valves in the water circuit integrated switching mechanism are the core of achieving functional isolation, but the specific implementation is not limited to a combination of three independent tee joints and three independent one-way valves. For example, a customized integrated valve block can be used, with corresponding flow channels machined inside and one-way valve cores embedded, to achieve completely identical fluid logic functions. The water tank and reaction tank can be an integrated design (as in this embodiment), or they can be two independent containers connected by external pipelines. Quick-connect fittings can be of various forms, such as pagoda fittings, clamp fittings, etc., as long as they meet the requirements of easy modular disassembly and sealing.

[0047] The specific connections of the waterways: 1. Water tank side: The water tank outlet connector is connected to the first port of the first tee connector 233 via a pipeline (e.g., Figure 9 Interface 1 shown.

[0048] 2. Conventional water circuit (pump 221 side): The second port of the first tee connector 233 is connected to the inlet of the pump 221. The outlet of the pump 221 is connected to the first port of the second tee connector 234 via the breather valve 222 and the third check valve 236.

[0049] 3. Zero-power water circuit (water storage chamber side): The third port of the first three-way connector 233 is connected to the first port of the third three-way connector 235 via the first one-way valve 237. The second port of the third three-way connector 235 is connected to the inlet / outlet of the water injection mechanism 232. The third port of the third three-way connector 235 is connected to the second port of the second three-way connector 234 via the second one-way valve 238 (e.g., ...). Figure 9 Interface 2 shown.

[0050] 4. Public Exit: The third port of the second tee connector 234 (e.g.) Figure 9 Interface 3) shown connects to water injection pipe 239, leading to the reaction chamber.

[0051] Working principle (e.g.) Figure 10 (as shown) In normal mode (lithium battery pack voltage ≥ operating threshold, water pump 221 starts normally), the lithium battery pack 140 of the hydrogen portable power supply has sufficient power. After the user turns on the power, the control board module 150 (power management controller) detects that the lithium battery voltage is normal and supplies power to the water pump 221. The water pump 221 starts and generates suction. Under the suction of the water pump 221, the deionized water in the water tank flows out through the water tank outlet connector and flows into the first port of the first three-way connector 233 through the pipeline. Due to the negative pressure on the side of the water pump 221, the water flow is mainly drawn into the water pump 221 through the second port of the first three-way connector 233. The pressurized water flows through the breather valve 222, the third one-way valve 236 (its conduction direction is set as: water pump 221 / breather valve 222 side → second three-way connector 234 side), and the second and third connectors (water flows in from its first port and flows out from its third port), and finally enters the water inlet of the reaction chamber (via the water inlet connector of the reaction chamber) through the water injection pipeline 239. During this process, since the water flow direction is opposite to the preset conduction direction of the first check valve 237 and the second check valve 238 or there is no water pressure drive, the two valves remain closed, the zero-power start-up circuit does not participate in the work, and the syringe-type water storage chamber is in a static state.

[0052] When the power supply is completely depleted due to prolonged disuse, i.e., entering a zero-charge state (lithium battery pack voltage < startup threshold), both the control board module 150 and the water pump 221 will fail to operate, and the conventional water circuit will fail (i.e., the power management chip detects that the lithium battery pack has zero charge, and the system enters "zero-charge startup mode"). At this time, the startup process is as follows: Step 1: Manual water intake. The user locates the spring-loaded mechanical button on the side of the power supply casing, presses it all the way down initially, and then releases it. Upon release, the return spring 2312 pushes the button body 2311, push rod 2322, and piston 2321 upwards, increasing the internal volume of the syringe-type water storage chamber (water flow chamber 2323) and generating negative pressure. This negative pressure is transmitted to the first interface of the third tee connector 235 through the only inlet and outlet of the water storage chamber.

[0053] The negative pressure acts on the two valves connected to the water circuit: for the first check valve 237, its preset conduction direction is "water tank → water storage chamber" (i.e., first tee connector 233 → third tee connector 235 → water storage chamber), which is consistent with the current negative pressure water suction direction, so the valve is "pulled open"; for the second check valve 238, its preset conduction direction is "water storage chamber → reaction chamber" (i.e., water storage chamber → third tee connector 235 → second tee connector 234), which is opposite to the current direction of attempting to draw water from the reaction chamber side, so it remains closed.

[0054] Therefore, under negative pressure, the deionized water in the water tank flows through the following path: water tank → water tank outlet connector → first tee connector 233 (first port → second interface) → first one-way valve 237 → third tee connector 235 (first port → second interface) → water storage chamber. Water is drawn into the water storage chamber until the piston 2321 returns to the top of the chamber, completing the quantitative water storage. The volume of the water storage chamber is precisely calculated and designed to precisely accommodate the minimum amount of water required to start the hydrogen-fixing material in the reaction chamber.

[0055] Step 2: Manual water filling. The user presses the same spring-loaded mechanical button again. During the pressing process, the button body 2311 overcomes the elastic force of the return spring 2312 and drives the piston 2321 downward through the push rod 2322, compressing the volume of the water storage chamber and causing the water pressure inside the chamber to rise rapidly.

[0056] High-pressure water also flows out from the inlet and outlet of the water storage chamber and acts on the second port of the third three-way connector 235. At this time, for the first one-way valve 237, the water flow direction is "water storage chamber → water tank", which is completely opposite to its preset conduction direction. The valve is "locked" by the water pressure and closed, effectively preventing water from flowing back into the water tank. For the second one-way valve 238, the water flow direction is "water storage chamber → reaction chamber", which is completely consistent with its preset conduction direction. The valve is "opened" by the water pressure.

[0057] Therefore, the high-pressure water in the water storage chamber flows through the following path: water storage chamber 232 → third three-way connector 235 (second port → first port) → second one-way valve 238 → third three-way connector 235 (second port → third port) → water injection pipeline 239, and is finally injected into the reaction chamber through the reaction chamber inlet connector.

[0058] After filling with water, the user releases the button, and the water storage chamber returns to its initial state. The "inhale-fill" operation can be repeated (if the initial filling is insufficient).

[0059] Water injected into the reaction chamber comes into contact with hydrogen-fixing materials (such as aluminum hydride), triggering a hydrolysis reaction to produce hydrogen. The generated hydrogen gas is discharged through the outlet 218 (which also serves as a packing port) on the chamber 211 and transported to the hydrogen fuel cell stack 111 in the electrical compartment 100 via the hydrogen pipeline 113. The stack 111 starts generating electricity, and the small current generated first charges the control board module 150 and the lithium battery assembly 140. Once the lithium battery reaches the minimum operating voltage, the power management system is fully activated, controlling the water pump 221 to start. The system automatically and seamlessly switches back to the normal operating mode, with the water pump 221 continuously and stably supplying water. The hydrogen fuel cell enters a highly efficient and continuous power generation state, supplying power to external devices and fully charging the lithium battery.

[0060] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0061] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0062] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the invention.

[0063] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A zero-power start-up device for a portable hydrogen power supply, applied in a portable hydrogen power supply including a water tank, a reaction chamber, and a water pump, characterized in that, include: The manual braking mechanism can be operated manually by the user. The water injection mechanism is mechanically linked to the manual braking mechanism. The water circuit integrated switching mechanism has its inlet end connected to the water tank, its first outlet end connected to the reaction tank, its second outlet end connected to the water pump inlet, and its third outlet end connected to the inlet / outlet of the water storage and injection mechanism. The manual braking mechanism is configured to drive the water storage and injection mechanism to perform the following cycle through user operation: drawing and storing a fixed amount of water from the water tank through the water circuit integrated switching mechanism, and injecting the stored fixed amount of water into the reaction chamber under pressure through the water circuit integrated switching mechanism.

2. The zero-power start-up device for a portable hydrogen power supply as described in claim 1, characterized in that, The waterway integrated switching mechanism is configured to have two operating modes: In normal mode, when the water pump is powered on, the water flow path is from the water tank through the water circuit integrated switching mechanism to the water pump, and then through the water circuit integrated switching mechanism to the reaction chamber, and is isolated from the water flow path by the water storage injection mechanism; In zero-power mode, when the water pump is de-energized and not working, in response to the pumping action of the water storage and injection mechanism, the water flow path is from the water tank through the water circuit integrated switching mechanism to the water storage and injection mechanism; in response to the water injection action of the water storage and injection mechanism, the water flow path is from the water storage and injection mechanism through the water circuit integrated switching mechanism to the reaction chamber.

3. The zero-power start-up device for a portable hydrogen power supply as described in claim 2, characterized in that, The waterway integrated switching mechanism includes multiple unidirectional flow guiding elements, and the conduction direction of the unidirectional flow guiding elements is configured as follows: In the zero-power mode, water is allowed to flow unidirectionally from the water tank into the water storage and injection mechanism, and water is allowed to flow unidirectionally from the water storage and injection mechanism into the reaction chamber. In the conventional mode, water is allowed to flow unidirectionally into the reaction chamber from the water pump side; Furthermore, it prevents water from flowing between the water storage injection mechanism and the water pump.

4. The zero-power start-up device for a portable hydrogen power supply as described in claim 3, characterized in that, The manual braking mechanism includes a button assembly and an elastic reset assembly; the water injection mechanism includes a cylindrical cavity, a piston slidably sealed within the cylindrical cavity, and a transmission rod fixedly connected to the piston; the transmission rod is linked to the button assembly; when the button assembly is pressed, the transmission rod drives the piston to move towards the bottom of the cylindrical cavity to perform the water injection action; When the button assembly is released, it resets under the action of the reset spring assembly and drives the piston to move towards the top of the cylindrical cavity via the transmission rod to perform the pumping action.

5. The zero-power start-up device for a portable hydrogen power supply as described in claim 4, characterized in that, The waterway integrated switching mechanism includes a first diversion connector, a second confluence connector, and a third control connector; The first port of the first diverter is connected to the water tank, the second port is connected to the inlet of the water pump, and the third port is connected to the inlet of the first check valve. The first port of the second manifold is connected to the outlet of the first check valve, the second port is connected to the inlet / outlet of the water storage and injection mechanism, and the third port is connected to the inlet of the second check valve. The first port of the third control connector is connected to the outlet of the water pump through the third check valve, the second port is connected to the outlet of the second check valve, and the third port is connected to the reaction chamber. Wherein, the conduction direction of the first check valve is from the first diverter to the third control connector; the conduction direction of the second check valve is from the third control connector to the second manifold; and the conduction direction of the third check valve is from the pump side to the second manifold.

6. The zero-power start-up device for a portable hydrogen power supply as described in claim 5, characterized in that, A breather valve for balancing pipeline pressure is also installed on the pipeline between the outlet of the water pump and the inlet of the third one-way valve.

7. The zero-power start-up device for a portable hydrogen power supply as described in claim 1, characterized in that, The effective volume of the water injection mechanism is designed to accommodate the minimum amount of water required to activate the hydrogen material in the reaction chamber.

8. The zero-power start-up device for a portable hydrogen power supply as described in claim 1, characterized in that, The water tank and the reaction tank are integrated into a single detachable tank module. The water circuit integration switching mechanism and the water storage and injection mechanism are installed on the tank module or inside the power supply housing adjacent to it.

9. The zero-power start-up device for a portable hydrogen power supply as described in claim 8, characterized in that, The bottom of the tank module is provided with a removable bottom cover, and the top of the water tank is provided with an openable sealed water inlet.

10. A portable hydrogen-powered power supply, characterized in that, The device includes a hydrogen production and power generation unit, an energy storage and management unit, and a zero-power start device for a portable hydrogen power supply as described in any one of claims 1 to 9; the hydrogen production and power generation unit includes the water tank, the reaction tank, and the water pump; the energy storage and management unit includes a lithium battery and a power management controller; the zero-power start device is used to manually start the hydrogen production and power generation unit when the lithium battery is depleted.

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