CN113701045A

CN113701045A - Multi-stage hydrogen charging control device, multi-stage hydrogen charging control method and equipment

Info

Publication number: CN113701045A
Application number: CN202111028838.8A
Authority: CN
Inventors: 公维佳; 李金山
Original assignee: Northwestern Polytechnical University; Taicang Yangtze River Delta Research Institute of Northwestern Polytechnical University
Current assignee: Northwestern Polytechnical University; Taicang Yangtze River Delta Research Institute of Northwestern Polytechnical University
Priority date: 2021-09-02
Filing date: 2021-09-02
Publication date: 2021-11-26
Anticipated expiration: 2041-09-02
Also published as: CN113701045B

Abstract

The application provides a multi-stage hydrogen charging control device, a multi-stage hydrogen charging control method and equipment, the multi-stage hydrogen charging control device includes: a hydrogen generator, the hydrogen generator is used to generate hydrogen; a metering chamber, the hydrogen generator Connected to the metering chamber through a control valve; a vacuum chamber, the metering chamber is connected to the vacuum chamber through a first valve; one end of the vacuum chamber is provided with an accommodating pipe, the accommodating pipe is used for accommodating the material to be absorbed hydrogen, and the accommodating pipe is provided with Inside the tube furnace, the tube furnace is used to heat the accommodating pipeline to build a hydrogen-filled environment with a temperature greater than a preset threshold; wherein, the control valve is used to control the input of the hydrogen generator to the metering chamber The amount of hydrogen, and the first valve is used to input the hydrogen in the metering chamber into the vacuum chamber, so that the material to be absorbed hydrogen absorbs hydrogen in a hydrogen-filled environment. It can control the hydrogen absorption metering and hydrogen absorption temperature at the same time.

Description

Multi-stage hydrogen charging control device, multi-stage hydrogen charging control method and equipment

Technical Field

The embodiments of the present application relate to the field of hydrogen absorption control of a hydrogen absorption material, and more particularly, to a multi-stage hydrogen charging control apparatus, a multi-stage hydrogen charging control method, and a device.

Background

For researchers who research hydrogen brittle materials or hydrogen storage structural materials at home and abroad, the hydrogen absorption process of the materials is required to be accurately measured and controlled. Meanwhile, the hydrogen absorption temperature of the material needs to be researched, but at present, no device for controlling the hydrogen absorption metering and the hydrogen absorption temperature exists, and the research on the material is hindered.

Therefore, there is a need in the art for a device that can control hydrogen uptake metering and hydrogen uptake temperature.

Disclosure of Invention

The application provides a multistage hydrogen charging control device, a multistage hydrogen charging control method and equipment, which can simultaneously control hydrogen absorption metering and hydrogen absorption temperature.

In one aspect, a multi-stage hydrogen charging method is provided, and is characterized in that the method is suitable for a multi-stage hydrogen charging control device which comprises a hydrogen generator, a metering chamber, a vacuum chamber and a tubular furnace; the hydrogen generator is used for generating hydrogen; the hydrogen generator is connected to the metering chamber through a control valve; the metering chamber is connected to the vacuum chamber through a first valve; one end of the vacuum chamber is provided with a containing pipeline which is used for containing a material to be absorbed by hydrogen; the accommodating pipeline is arranged inside the tube furnace, and the tube furnace is used for heating the accommodating pipeline so as to construct a hydrogen charging environment with the temperature greater than a preset threshold value;

the method comprises the following steps:

determining the maximum pressure of the metering chamber based on the final pressure of a space formed by the vacuum chamber and the metering chamber after the hydrogen to be absorbed material absorbs hydrogen, the mass of the hydrogen to be absorbed material and the hydrogen absorption amount of the hydrogen to be absorbed material;

determining the initial pressure of the space formed by the vacuum chamber and the metering chamber before the hydrogen to be absorbed material absorbs hydrogen based on the maximum pressure;

dividing the pressure drop into a plurality of pressure drops when the pressure drop between the initial pressure and the final pressure is greater than or equal to a preset threshold;

determining a plurality of trigger pressures corresponding to the plurality of pressure drops respectively, wherein the plurality of trigger pressures correspond to the plurality of hydrogen charging processes respectively;

for each hydrogen charging process in the multiple hydrogen charging processes, closing the control valve under the condition that the pressure of the metering chamber reaches the trigger pressure corresponding to the hydrogen charging process, so that the metering chamber obtains a preset amount of hydrogen from the hydrogen generator; and opening the first valve to input the hydrogen in the metering chamber into the vacuum chamber so that the material to be hydrogen absorbed absorbs hydrogen in a hydrogen charging environment.

In another aspect, a multi-stage charging control apparatus is provided, wherein the multi-stage charging control apparatus is used for controlling a multi-stage charging control device, and the multi-stage charging control device comprises a hydrogen generator, a metering chamber, a vacuum chamber and a tube furnace; the hydrogen generator is used for generating hydrogen; the hydrogen generator is connected to the metering chamber through a control valve; the metering chamber is connected to the vacuum chamber through a first valve; one end of the vacuum chamber is provided with a containing pipeline which is used for containing a material to be absorbed by hydrogen; the accommodating pipeline is arranged inside the tube furnace, and the tube furnace is used for heating the accommodating pipeline so as to construct a hydrogen charging environment with the temperature greater than a preset threshold value;

the apparatus comprises:

a first determination unit for determining the maximum pressure of the metering chamber based on the final pressure of the space formed by the vacuum chamber and the metering chamber after the hydrogen to be absorbed material absorbs hydrogen, the mass of the hydrogen to be absorbed material and the hydrogen absorption amount of the hydrogen to be absorbed material;

a second determination unit for determining an initial pressure of a space formed by the vacuum chamber and the metering chamber before the hydrogen to be absorbed material absorbs hydrogen gas, based on the maximum pressure;

a dividing unit for dividing the pressure drop between the initial pressure and the final pressure into a plurality of pressure drops when the pressure drop is greater than or equal to a preset threshold;

the third determining unit is used for determining a plurality of trigger pressures corresponding to the pressure drops respectively, and the trigger pressures correspond to the hydrogen charging processes for multiple times respectively;

the hydrogen charging control unit is used for closing the control valve under the condition that the pressure of the metering chamber reaches the trigger pressure corresponding to the hydrogen charging process aiming at each hydrogen charging process in the multiple hydrogen charging processes, so that the metering chamber obtains a preset amount of hydrogen from the hydrogen generator; and opening the first valve to input the hydrogen in the metering chamber into the vacuum chamber so that the material to be hydrogen absorbed absorbs hydrogen in a hydrogen charging environment.

In another aspect, an embodiment of the present application provides an electronic device, including:

a processor adapted to execute a computer program;

a computer-readable storage medium having stored therein a computer program which, when executed by the processor, implements the multi-stage hydrogen charging control method described above.

In another aspect, an embodiment of the present application provides a computer-readable storage medium, where computer instructions are stored, and when the computer instructions are read and executed by a processor of a computer device, the computer device is caused to execute the above multi-stage hydrogen charging control method.

In the embodiment of the application, on one hand, the hydrogen generator is designed to be connected to the metering chamber through a control valve, so that the hydrogen generator can obtain quantitative hydrogen, and accurate metering of the hydrogen absorption amount of the material to be absorbed hydrogen is realized; on the other hand, one end of the vacuum chamber is designed into an accommodating pipeline, the accommodating pipeline is arranged inside the tube furnace, a hydrogen charging environment with the temperature greater than a preset threshold value can be constructed, namely, the hydrogen absorption temperature of the material to be hydrogen absorbed is controlled, in addition, the metering chamber is designed to be connected to the vacuum chamber through a first valve, under the condition that the first valve is opened, the material to be hydrogen absorbed in the accommodating pipeline can be enabled to absorb the hydrogen in the metering chamber, and then the control over the hydrogen absorption amount and the hydrogen absorption temperature of the material to be hydrogen is realized.

Further, based on the maximum pressure, the initial pressure of the space formed by the vacuum chamber E2 and the metering chamber E1 before the hydrogen to be absorbed material absorbs hydrogen gas is determined; dividing the pressure drop into a plurality of pressure drops when the pressure drop between the initial pressure and the final pressure is greater than or equal to a preset threshold; determining a plurality of trigger pressures corresponding to the plurality of pressure drops respectively, wherein the plurality of trigger pressures correspond to the plurality of hydrogen charging processes respectively; for each of the multiple hydrogen charging processes, the control valve D3 is closed when the pressure measured by the first sensor S1 reaches the trigger pressure corresponding to the hydrogen charging process.

In other words, the quantitative hydrogen gas to be absorbed by the hydrogen absorbing material can be directly divided into a plurality of inputs to the metering chamber E1. Namely, the primary charging process is divided into a multi-stage charging process. For example, assuming that the pressure drop caused by hydrogen absorption of the material to be hydrogen absorbed is 10mbar by rough calculation, the primary hydrogen charging process can be divided into two hydrogen charging processes, the primary hydrogen charging process control pressure drop is 3mbar, and the secondary hydrogen charging process control pressure drop is 7 mbar.

For some materials, the pressure around the material cannot be made excessive during the charging process, and in this case, multi-stage charging is required. Specifically, for some materials, if the initial hydrogen pressure in the vacuum chamber E2 is too high, hydrogen bubbles may be generated on the surface of the material to be hydrogen absorbed, which may not only cause hydrogen loss on the surface of the material to be hydrogen absorbed, thereby reducing the accuracy of hydrogen absorption measurement, but also reduce the hydrogen absorption efficiency of the material to be hydrogen absorbed, and increase the time cost. In this embodiment, through many times hydrogen filling process, can make vacuum chamber E2's initial pressure less, avoid this surface of waiting to inhale hydrogen material to produce the tympanic bulla, not only can avoid producing the hydrogen loss to this surface of waiting to inhale hydrogen material, and then promoted the accuracy of inhaling hydrogen measurement, can also promote this hydrogen absorption efficiency of waiting to inhale hydrogen material, reduce time cost.

Drawings

Fig. 1 is a schematic structural diagram of a multistage hydrogen charging control apparatus provided in an embodiment of the present application.

Fig. 2 is a schematic view of the structure of a tube furnace according to an embodiment of the present invention.

Fig. 3 is a schematic flow chart of a multi-stage hydrogen charging control method provided in an embodiment of the present application.

Fig. 4 to 11 are examples of a method for controlling the multi-stage hydrogen charging control apparatus shown in fig. 1 according to an embodiment of the present disclosure.

Fig. 12 is a schematic structural diagram of a multi-stage hydrogen charging control apparatus provided in an embodiment of the present application.

Fig. 13 is a schematic block diagram of an electronic device provided in an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

As shown in fig. 1, the multi-stage hydrogen charging control apparatus may include:

hydrogen generator for generating hydrogen H₂；

A metering chamber (dosing cell) E1, the hydrogen generator being connected to the metering chamber E1 by a control valve D3;

vacuum Cell E2, the metering chamber E1 being connected to the vacuum chamber E2 by a first valve D4; one end of the vacuum chamber E2 is provided with a holding duct for holding a material to be hydrogen-absorbed;

the tube furnace, this hold the pipeline setting in the inside of this tube furnace, this tube furnace is used for heating this pipeline that holds to the hydrogen environment that the temperature is greater than the preset threshold value is found.

The control valve D3 is used to control the amount of hydrogen gas input into the metering chamber E1 by the hydrogen generator, and the first valve D4 is used to input the hydrogen gas of the metering chamber E1 into the vacuum chamber E2, so that the material to be hydrogen absorbed absorbs hydrogen gas in a hydrogen-filled environment.

In the embodiment of the present application, on the one hand, the hydrogen generator is designed to be connected to the metering chamber E1 through the control valve D3, so that the hydrogen generator can obtain a certain amount of hydrogen gas to realize accurate metering of the hydrogen absorption amount of the material to be absorbed; on the other hand, one end of the vacuum chamber E2 is designed to be a holding pipe, and the holding pipe is arranged inside the tube furnace, so that a hydrogen charging environment with a temperature greater than a preset threshold value can be established, that is, the hydrogen absorption temperature of the material to be hydrogen absorbed can be controlled, and in addition, the metering chamber E1 is designed to be connected to the vacuum chamber E2 through a first valve D4, and under the condition that the first valve D4 is opened, the material to be hydrogen absorbed in the holding pipe can be absorbed into the hydrogen in the metering chamber E1, so that the control of the hydrogen absorption amount and the hydrogen absorption temperature of the material to be hydrogen can be realized.

In some embodiments, the volume of the metrology chamber E1 is less than the volume of the vacuum chamber E2.

In this embodiment, the space of the metering chamber E1 is designed to be smaller than the space of the vacuum chamber E2, that is, the space of the metering chamber E1 is smaller and the space of the vacuum chamber E2 is larger, so that not only can the accuracy of the metering chamber E1 in metering hydrogen be improved, but also a sufficient accommodating space can be provided for the material to be hydrogen absorbed, the content of hydrogen in the vacuum chamber E2 can be improved, and further, the efficiency of the material to be hydrogen absorbed absorbing hydrogen can be improved, and the time cost is reduced.

In some embodiments, the surface of the transition chamber may be provided with an insulating layer to prevent temperature loss and scalding. For example, the insulation may be tinfoil.

The present application does not limit the specific shapes of the metrology chamber E1 and the vacuum chamber E2. For example, the metering chamber E1 or the vacuum chamber E2 may be regular in shape to ensure that hydrogen gas is uniformly distributed in the inner space of E1 or the vacuum chamber E2, or irregular in shape, which is not limited in this application. In addition, the vacuum degree of the vacuum chamber E2 and the measuring chamber E1 is not particularly limited in the present application. As an example, under no-load conditions, the vacuum levels of vacuum chamber E2 and metrology chamber E1 should be better than 1 × 10^-4Pa; as another example, the vacuum degree of the vacuum chamber E2 and the metering chamber E1 is better than 5X 10 under heating conditions, such as heating to 400 deg.C^-5Pa。

In this application, the vacuum chamber E2 may be connected to a tube furnace to form a high temperature hydrogen-filled environment, and specifically, the accommodating tube may be a quartz or ceramic tube connected to the vacuum chamber E2, and then the quartz or ceramic tube is heated to make the material at a predetermined temperature. Of course, the present application is not limited to the specific implementation of the tube furnace.

Fig. 2 is a schematic view of the structure of the tube furnace 100 according to the embodiment of the present application.

As shown in fig. 2, the tube furnace 100 may include a furnace cover 130 and a base 140. Wherein a space for covering the accommodating tube 110 may be formed between the cover 130 and the base 140.

In some embodiments, the base 140 may be provided with a temperature controller, such as a PID temperature controller. The temperature control range of the PID temperature controller is between room temperature and 550 ℃, and the temperature precision of the PID temperature controller is +/-1 ℃.

In some embodiments, a device for heating and/or insulating, such as a heating electromagnet or an insulating electromagnet, may be disposed within the tubular space to precisely control the temperature of the nanochannel 110.

For example, the top region 131 within the tubular space may be provided with means for heating and/or keeping warm. As a further example, the bottom area 141 in the tubular space may be provided with means for heating and/or keeping warm. Optionally, means for heating and/or keeping warm may be provided in the tubular space, with or without contact with the receiving conduit 110.

In some embodiments, the material to be hydrogen absorbed may be fed into the containment duct 110 through a feed rod 120.

In some implementations, the containment duct 110 may be part of the vacuum chamber E2. For example, the accommodating duct 110 may be a detachable device, and the accommodating duct 110 may be an integral structure with the vacuum chamber E2. Similarly, the tube furnace 100 may be a removable device or may be a unitary structure with the vacuum chamber E2. The tube furnace 100, which is detachably disposed, facilitates the assembly of the multi-stage hydrogen charging control apparatus according to the requirements.

In some embodiments, a transition cavity is formed between the containment duct and the vacuum chamber E2.

With should hold and design for the transition chamber between pipeline and this vacuum chamber E2, be favorable to the hydrogen in vacuum chamber E2 to pass through to this pipeline of holding, not only can promote the efficiency of waiting to inhale hydrogen material and absorbing hydrogen, reduce time cost, can also avoid hydrogen to form the gathering in this vacuum chamber E2's subregion, guaranteed that the hydrogen that gets into vacuum chamber E2 all can be waited to inhale the hydrogen material and absorb, and then, promoted the degree of accuracy of the control of the volume of inhaling hydrogen of waiting to inhale the hydrogen material. Optionally, the surface of the transition cavity can be provided with a heat insulation layer to prevent temperature loss and scalding. For example, the insulation may be tinfoil.

In some embodiments, the multi-stage hydrogen charging control apparatus further comprises:

a first sensor S1, the first sensor S1 connected to the metering chamber E1, the first sensor S1 for measuring the pressure of the metering chamber E1, the pressure of the metering chamber E1 for characterizing the amount of hydrogen gas that has been input to the metering chamber E1.

In one implementation, the multi-stage hydrogen charging control apparatus further includes: a microcomputer connected to the first sensor S1 for reading, writing and recording data measured by the first sensor S1, and a microcomputer connected to the first sensor S1.

In this embodiment, the data measured by the first sensor S1 is used to control the opening or closing of the control valve D3, which in turn controls the amount of hydrogen in the metering chamber.

a second sensor S2, the second sensor S2 is connected with the vacuum chamber E2, the second sensor S2 is used for measuring the pressure of the vacuum chamber E2, and the sensing precision of the second sensor S2 is greater than that of the first sensor S1.

In one implementation, the multi-stage hydrogen charging control apparatus further includes: a microcomputer connected to the second sensor S2 for reading, writing and recording data measured by the second sensor S2, and connected to the second sensor S2.

In this embodiment, the data measured by the second sensor S2 can be used to determine whether the vacuum chamber E2 has reached the condition for injecting hydrogen gas and whether the material to be hydrogen-absorbed in the vacuum chamber E2 has completed absorbing hydrogen gas. In addition, the data detected by the second sensor S2 can also be used to reflect the hydrogen content in the vacuum chamber E2, and by analyzing the change process of the hydrogen content, the content of the absorbed hydrogen of the material to be hydrogen absorbed can be accurately calculated, so as to reflect the hydrogen absorption process of the material to be hydrogen absorbed, thereby overcoming the difficulty that the hydrogen absorption process of the material to be hydrogen absorbed cannot be accurately measured before.

Of course, in other alternative embodiments, the multi-stage hydrogen charging control device may also include only the second sensor S2, which is not specifically limited in this application.

an intake duct having one end connected to one end of the control valve D3 through a second valve D2, the other end of the control valve D3 being connected to the metering chamber E1, the other end of the intake duct being connected to the hydrogen generator through a third valve D1.

In other words, the gas inlet pipeline can be used for buffering the flow rate of the hydrogen output by the hydrogen generator so as to reduce the operation requirement on the control valve D3, and on the other hand, the gas inlet pipeline can also be used for storing the hydrogen generated by the hydrogen generator so as to reduce the time for obtaining quantitative hydrogen from the metering chamber E1, thereby reducing the time cost of the hydrogen absorption process.

molecular vacuum pump P2 and mechanical vacuum pump P1;

wherein the molecular vacuum pump P2 is connected to the vacuum chamber E2 through a fourth valve C1, the mechanical vacuum pump P1 is also connected to the molecular vacuum pump P2 through a fifth valve C2, the mechanical vacuum pump P1 is connected to one end of a seventh valve D5 through a sixth valve C3, and the other end of the seventh valve D5 is connected to the gas inlet pipe;

the fourth valve C1 is a start valve of the molecular vacuum pump P2, the fifth valve C2 is a main start valve of the mechanical vacuum pump P1, the fifth valve C2 is used to control the mechanical vacuum pump P1 to pump the gas in the vacuum chamber E2, the sixth valve C3 is an auxiliary start valve of the mechanical vacuum pump P1, the mechanical vacuum pump P1, the sixth valve C3 and the seventh valve D5 are used to form a bypass gas path of the gas inlet pipeline, and the bypass gas path is used for the mechanical vacuum pump P1 to pump the gas in the gas inlet pipeline.

It is to be understood that the molecular vacuum Pump P2 can also be referred to as a high pressure vacuum Pump (HV Pump), the mechanical vacuum Pump P1 can also be referred to as a low pressure vacuum Pump (LV Pump), the molecular vacuum Pump P2 can be used to draw gas in the vacuum chamber E2 to achieve a high vacuum state, and the mechanical vacuum Pump P1 can be used to draw gas in the vacuum chamber E2 to achieve a low vacuum state, in other words, the ability of the molecular vacuum Pump P2 to draw a vacuum is higher than the ability of the mechanical vacuum Pump P1 to draw a vacuum. Optionally, the fourth valve C1 may be a gate valve between the molecular vacuum pump P2 and vacuum chamber E2. The fifth valve C2 may be a solenoid valve between the molecular vacuum pump P2 and the mechanical vacuum pump P1. Alternatively, the fourth valve C1 may be an electrically actuated valve and the seventh valve D5 may be a mechanical valve. Of course, in other alternative embodiments, the mechanical vacuum pump P1 may be directly connected to the intake conduit through the sixth valve C3 or the seventh valve D5, which is not specifically limited herein.

Because mechanical vacuum pump P1 extraction effect is high when the low vacuum is extracted, the molecular vacuum pump P2 extraction effect is high and stability under high temperature is better when this vacuum is extracted, this application can carry out the extraction in grades to the gas in vacuum chamber E2 through introducing the two-stage vacuum pump, and then, can be on the basis of control time cost for E2 reaches the pressure requirement of treating the hydrogen charging material and carrying out the hydrogen charging just when empty.

In addition, by the design of the bypass gas circuit, on one hand, the bypass gas circuit is connected with the mechanical vacuum pump P1 through the seventh valve D5, and the mechanical vacuum pump P1 can be directly used for pumping away the hydrogen in the gas inlet pipeline between the second valve D2 and the third valve D1 and the residual hydrogen between the second valve D2 and the hydrogen generator, so as to prevent the residual hydrogen in the gas circuit except the metering chamber E1 and the vacuum chamber E2 when the hydrogen generator is closed, thereby improving the safety. In addition, this bypass gas circuit can also be used for forming the loop with measurement room E1 and vacuum chamber E2, and then when utilizing hydrogen to wash this multistage hydrogen filling controlling means, is favorable to washing each segmentation difference two-way in the loop, and then promotes and washes the effect.

The multi-stage hydrogen charging control method will be described with reference to the drawings.

Fig. 2 is a schematic flow chart of a multi-stage hydrogen charging control method 200 provided in an embodiment of the present application. For example, the method 200 may be used to control the multi-stage hydrogen charging control device shown in fig. 1, i.e., the multi-stage hydrogen charging control device includes a hydrogen generator, a metering chamber E1, and a vacuum chamber E2; the hydrogen generator is used for generating hydrogen; the hydrogen generator is connected to the metering chamber E1 by a control valve D3; the metrology chamber E1 is connected to the vacuum chamber E2 by a first valve D4; one end of the vacuum chamber E2 is provided with a containing pipeline which is used for containing a material to be absorbed by hydrogen, the containing pipeline is arranged inside a tube furnace which is used for heating the containing pipeline so as to construct a hydrogen charging environment with the temperature being more than a preset threshold value; for ease of explanation, the method 200 is described below with reference to the reference numerals shown in FIG. 1.

As shown in fig. 2, the method 200 may include:

s210, controlling the state of the control valve D3 to make the metering chamber E1 obtain a preset amount of hydrogen from the hydrogen generator;

s220, open the first valve D4, so that the hydrogen gas in the metering chamber E1 is input into the vacuum chamber E2, so that the material to be hydrogen absorbed absorbs hydrogen gas in hydrogen-filled environment.

In some embodiments, the multi-stage hydrogen charging control apparatus further comprises a first sensor S1, the first sensor S1 being connected to the metering chamber E1; wherein, the S210 may include:

determining the maximum pressure of the metering chamber E1 based on the final pressure of the space formed by the vacuum chamber E2 and the metering chamber E1 after the hydrogen is absorbed by the material to be hydrogen absorbed, the mass of the material to be hydrogen absorbed and the hydrogen absorption amount of the material to be hydrogen absorbed; based on the maximum pressure, the metering chamber E1 is caused to take a preset amount of hydrogen from the hydrogen generator by controlling the state of the control valve D3.

In some implementations, the maximum pressure is determined based on the following equation:

P^I＝(P^E-M_S*C_T/K)/Λ；

wherein, P^IRepresents the maximum pressure, P^ERepresents the final pressure, M_SRepresents the mass of the material to be hydrogen-absorbed, C_TDenotes the amount of hydrogen absorption of the material to be hydrogen absorbed, K denotes a scale factor, and Λ denotes the ratio of the pressure of the space formed by the vacuum chamber E2 and the metering chamber E1 to the pressure of the metering chamber E1.

In other words, the final pressure P^EIs the maximum pressure P^IMass M of the material to be hydrogen absorbed_SAnd a hydrogen absorption amount C of the material to be hydrogen absorbed_TAs a function of (c).

In a specific implementation, the pressure of the metering chamber E1 during the charging process can be obtained from the measurement result of the pressure sensor S1, and the charging process can be stopped when the metering chamber E1 is charged to the required pressure. At this point, the metering chamber E1 has a pressure P^II.e. maximum pressure, the final pressure of the measuring chamber E1 and the vacuum chamber E2 is P after the hydrogen absorption material has absorbed hydrogen^E。

It should be noted that the present application does not specifically limit the parameters in the above formula. For example, K is related to the multi-stage hydrogen charging control device, and is an inherent property of the multi-stage hydrogen charging control device. In specific implementation, the value of K can be obtained through experiments. As an example, the value of K can be 660.ppm. g.Mbar-1. For example, Λ may be a constant that is inherent to the multi-stage charging control device in relation to the multi-stage charging control device. I.e. different multi-stage charging control devices have different Λ. By way of example, Λ is about 0.03082 when the temperature of the tube furnace is 400 ℃ and the temperature of the vacuum chamber E2 is 40 ℃.

In some implementations, the control valve D3 is closed when the pressure of the metering chamber E1 detected by the first sensor S1 is equal to a maximum pressure.

In other words, the quantitative hydrogen gas to be absorbed by the hydrogen absorbing material can be directly inputted into the metering chamber E1 at one time.

In some implementations, based on the maximum pressure, an initial pressure of the space formed by the vacuum chamber E2 and the metering chamber E1 before the hydrogen to be absorbed material absorbs hydrogen gas is determined; dividing the pressure drop into a plurality of pressure drops when the pressure drop between the initial pressure and the final pressure is greater than or equal to a preset threshold; determining a plurality of trigger pressures corresponding to the plurality of pressure drops respectively, wherein the plurality of trigger pressures correspond to the plurality of hydrogen charging processes respectively; for each of the multiple hydrogen charging processes, the control valve D3 is closed when the pressure measured by the first sensor S1 reaches the trigger pressure corresponding to the hydrogen charging process.

In some implementations, the maximum pressure can be used to determine the initial pressure of the space formed by the vacuum chamber E2 and the metering chamber E1 before the hydrogen to be absorbed material absorbs hydrogen gas by the following equation:

P^D＝ΛP^I；

wherein, P^DRepresents the initial pressure, P^IDenotes the maximum pressure, and Λ denotes a ratio of the pressure of the space formed by the vacuum chamber E2 and the metrology chamber E1 to the pressure of the metrology chamber E1. Alternatively, Λ may be a constant, which is an inherent property of the multi-stage charging control device in relation to the multi-stage charging control device. I.e. different multi-stage charging control devices have different Λ. By way of example, Λ is about 0.03082 when the temperature of the tube furnace is 400 ℃ and the temperature of the vacuum chamber E2 is 40 ℃.

In some implementations, a plurality of pressures of the space formed by the vacuum chamber E2 and the metering chamber E1 before the hydrogen to be absorbed material absorbs hydrogen gas may be respectively determined based on the plurality of pressure drops and the final pressure described above, and then the plurality of trigger pressures may be respectively determined using Λ based on the plurality of pressures.

In some embodiments, the multi-stage hydrogen charging control apparatus further comprises a second sensor S2, the second sensor S2 is connected with the vacuum chamber E2, the sensing accuracy of the second sensor S2 is greater than that of the first sensor S1; wherein, the S210 may include:

acquiring the detected pressure of the second sensor S2 with the control valve D3 and the first valve D4 opened;

in the case where the pressure detected by the second sensor S2 is less than or equal to a preset pressure, the first valve D4 is closed and the control valve D3 is opened until the control valve D3 is closed when the metering chamber E1 takes a preset amount of hydrogen gas from the hydrogen generator.

In some embodiments, the multi-stage hydrogen charging control apparatus further comprises an air inlet duct, one end of which is connected to one end of the control valve D3 through a second valve D2, the other end of the control valve D3 is connected to the metering chamber E1, and the other end of which is connected to the hydrogen generator through a third valve D1; wherein, the S210 may include:

the second valve D2 and the control valve D3 are opened until the metering chamber E1 takes a preset amount of hydrogen gas from the hydrogen generator and the second valve D2 and the control valve D3 are closed.

In some embodiments, the multi-stage hydrogen charging control apparatus further comprises a molecular vacuum pump P2 and a mechanical vacuum pump P1; the molecular vacuum pump P2 is connected to the vacuum chamber E2 through a fourth valve C1, the mechanical vacuum pump P1 is also connected to the molecular vacuum pump P2 through a fifth valve C2, the mechanical vacuum pump P1 is connected to one end of a seventh valve D5 through a sixth valve C3, and the other end of the seventh valve D5 is connected to the gas inlet pipe;

before S210, the method 200 may further include:

the multistage hydrogen charging control device is cleaned at least once by using the hydrogen generated from the hydrogen generator by controlling the states of the control valve D3, the first valve D4, the second valve D2, the fourth valve C1, the fifth valve C2, the sixth valve C3 and the seventh valve D5; the gas inlet pipe is purged at least once by the hydrogen gas generated from the hydrogen generator by controlling the states of the fifth valve C2, the sixth valve C3, and the seventh valve D5.

In this embodiment, by controlling the states of the control valve D3, the first valve D4, the second valve D2, the fourth valve C1, the fifth valve C2, the sixth valve C3 and the seventh valve D5, when the multistage hydrogen charging control device is flushed by hydrogen, the flushing of the gas path or space between the second valve D2 and the first vacuum chamber E2 in units of segments is facilitated, and further, the flushing effect can be improved.

A specific control method is exemplarily described below with reference to fig. 4 to 11.

It should be understood that in fig. 1, 4 to 11, the same reference numerals denote the same components, and in order to avoid repetition, the components in fig. 4 to 11 may refer to the description for fig. 1, and are not repeated in this embodiment. In addition, the arabic numerals in fig. 4 to 11 may represent execution sequence numbers, O in fig. 4 to 11 may represent opening of the valve, and X in fig. 4 to 11 may represent closing of the valve, which is not repeated herein.

Fig. 4 is an example of a low vacuum pumping method provided in an embodiment of the present application to control the multi-stage hydrogen charging control apparatus shown in fig. 1.

As shown in fig. 4, the low vacuum pumping method of controlling the multi-stage hydrogen charging control apparatus shown in fig. 1 may include the steps of:

step 1: the mechanical vacuum pump P1 was turned on.

Step 2: the fifth valve C2 is opened.

And step 3: the fourth valve C1 is opened.

In this embodiment, after the fourth valve C1 is opened, the mechanical vacuum pump P1 pumps air from the vacuum chamber E2 until the pressure measured by the second sensor S2 reflects that the positive vacuum of the vacuum chamber E2 reaches a low vacuum state.

Fig. 5 is an example of a high vacuum pumping method provided in an embodiment of the present application to control the multi-stage hydrogen charging control apparatus shown in fig. 1.

As shown in fig. 5, the high vacuum pumping method of controlling the multi-stage hydrogen charging control apparatus shown in fig. 1 may include the steps of:

step 1: the molecular vacuum pump P2 was turned on.

For example, the pressure in vacuum chamber E2 is less than 10^-1mBar, starting the molecular vacuum pump P2 until the angular speed W of the molecular vacuum pump P2 is 1500Hz, and acquiring the pressure of the vacuum chamber E2 through the second sensor S2.

In this embodiment, after the molecular vacuum pump P2 is turned on, the molecular vacuum pump P2 pumps air from the vacuum chamber E2 until the pressure measured by the second sensor S2 reflects that the positive vacuum of the vacuum chamber E2 reaches a high vacuum state.

Fig. 6 is an example of a method for controlling the multi-stage hydrogen charging control device shown in fig. 1 to perform chamber cleaning according to an embodiment of the present application.

As shown in fig. 6, the method for performing chamber cleaning for controlling the multi-stage hydrogen charging control apparatus shown in fig. 1 may include the following steps:

step 1: the fifth valve C2 is opened.

Step 2: the sixth valve C3 is opened.

And step 3: the seventh valve D5 was opened.

And 4, step 4: the seventh valve D5 was closed. For example, after the seventh valve D5 is opened for 10s, the seventh valve D5 is closed.

And 5: the sixth valve C3 is closed.

Step 6: the fifth valve C2 is opened.

And 7: the first valve D4 was closed.

And 8: the second valve D2 is opened.

And step 9: control valve D3 was opened.

Step 10: the fourth valve C1 is closed. For example, until the pressure in vacuum chamber E2 is greater than 50mbar, fourth valve C1 is closed.

Step 11: the first valve D4 was opened.

Step 12: the second valve D2 is closed. For example, until the pressure in vacuum chamber E2 is greater than 100mbar, fourth valve C1 is closed.

Step 13: control valve D3 was closed.

Step 14: the fourth valve C1 is opened.

Step 15: control valve D3 was opened. For example, until the pressure of the vacuum chamber E2 is less than 5X 10^-5mbar, control valve D3 was opened.

Step 16: control valve D3 was closed. For example, after the duration of opening the control valve D3 reached 10s, the control valve D3 was closed.

And step 17: the fifth valve C2 is closed.

Step 18: the sixth valve C3 is opened.

Step 19: the seventh valve D5 was opened.

Step 20: the seventh valve D5 was closed. For example, after the duration of opening the seventh valve D5 reached 10s, the seventh valve D5 was closed.

Step 21: the sixth valve C3 is closed.

Step 22: the fifth valve C2 is opened.

In some implementations, steps 7 through 16 may be performed in a loop multiple times, for example, steps 7 through 16 may be performed in a loop 3 times.

In this embodiment, the multi-stage hydrogen charging control device is purged at least once by using the hydrogen generated from the hydrogen generator by controlling the states of the control valve D3, the first valve D4, the second valve D2, the fourth valve C1, the fifth valve C2, the sixth valve C3 and the seventh valve D5.

Fig. 7 is an example of a method for controlling the bypass gas path of the multi-stage hydrogen charging control device shown in fig. 1 to be cleaned according to an embodiment of the present application.

As shown in fig. 7, the method for controlling the bypass gas path of the multi-stage hydrogen charging control apparatus shown in fig. 1 to be cleaned may include the following steps:

step 1: the fifth valve C2 is closed.

Step 2: the sixth valve C3 is opened.

And step 3: the seventh valve D5 was opened.

And 4, step 4: the seventh valve D5 was closed. For example, after the duration of opening the seventh valve D5 reached 10s, the seventh valve D5 was closed.

And 5: the sixth valve C3 is closed.

Step 6: the fifth valve C2 is opened.

In some implementations, steps 3 through 4 may be performed cyclically multiple times, for example, steps 3 through 4 may be performed cyclically 3 times.

In this embodiment, the gas inlet pipe is purged at least once by the hydrogen gas generated from the hydrogen generator by controlling the states of the fifth valve C2, the sixth valve C3 and the seventh valve D5.

Fig. 8 is an example of a method for controlling the metering chamber E1 of the multi-stage hydrogen charging control device shown in fig. 1 to perform hydrogen charging according to the embodiment of the present application.

As shown in fig. 8, the method of controlling the metering chamber E1 of the multi-stage hydrogen charging control apparatus shown in fig. 1 to perform hydrogen charging may include the steps of:

step 1: the first valve D4 was closed.

Step 2: the second valve D2 is opened.

And step 3: control valve D3 was opened.

And 4, step 4: control valve D3 was closed. For example, until the pressure in the metering chamber E1 equals the maximum pressure or trigger pressure, the control valve D3 is closed.

And 5: the second valve D2 is closed.

In this embodiment, the hydrogen generated by the hydrogen generator can be quantitatively input into the metering chamber E1 by controlling the states of the first valve D4, the control valve D3 and the second valve D2, i.e. the vacuum chamber E2 is charged with hydrogen.

Fig. 9 is an example of a method for controlling a hydrogen absorption material of the multi-stage hydrogen charging control device shown in fig. 1 to absorb hydrogen according to an embodiment of the present application.

As shown in fig. 9, the method of controlling the multi-stage hydrogen charging control apparatus shown in fig. 1 to absorb hydrogen may include the steps of:

step 1: the fourth valve C1 is closed.

Step 2: the first valve D4 was opened.

And step 3: the fourth valve C1 is closed.

And 4, step 4: the fourth valve C1 is opened. For example, until the pressure of vacuum chamber E2 equals the final pressure, control valve D3 is closed. For example, the final pressure is 10^-1mbar。

And 5: the fourth valve C1 is closed.

In this embodiment, the hydrogen gas in the vacuum chamber E2 is absorbed by the material to be absorbed by controlling the states of the first valve D4 and the fourth valve C1.

Fig. 10 is an example of a method for controlling the shutdown of the multi-stage hydrogen charging control apparatus shown in fig. 1 according to an embodiment of the present application.

As shown in fig. 10, the method of controlling the shutdown of the multi-stage hydrogen charging control apparatus shown in fig. 1 may include the steps of:

step 1: molecular vacuum pump P2 was turned off.

Step 2: the fifth valve C2 is closed. For example, until W of the molecular vacuum pump P2 is 0, the fifth valve C2 is closed.

And step 3: the mechanical vacuum pump P1 was turned off.

In this embodiment, the multi-stage hydrogen charging control apparatus can be turned off by controlling the states of the molecular vacuum pump P2, the fifth valve C2, and the mechanical vacuum pump P1.

Fig. 11 is an example of a method for controlling air intake of the multi-stage hydrogen charging control device shown in fig. 1 according to an embodiment of the present disclosure.

As shown in fig. 11, the method of controlling the intake air of the multi-stage hydrogen charging control apparatus shown in fig. 1 may include the steps of:

step 1: the third valve D1 is opened.

Step 2: the second valve D2 is opened.

And step 3: control valve D3 was opened.

And 4, step 4: the third valve D1 is closed. For example, until atmospheric pressure is reached, the third valve D1 is closed.

And 5: the second valve D2 is closed.

Step 6: control valve D3 was closed.

In this embodiment, the metering chamber E1 can be charged with hydrogen by controlling the states of the third valve D1, the second valve D2, and the control valve D3.

The preferred embodiments of the present application have been described in detail with reference to the accompanying drawings, however, the present application is not limited to the details of the above embodiments, and various simple modifications can be made to the technical solution of the present application within the technical idea of the present application, and these simple modifications are all within the protection scope of the present application. For example, the various features described in the foregoing detailed description may be combined in any suitable manner without contradiction, and various combinations that may be possible are not described in this application in order to avoid unnecessary repetition. For example, various embodiments of the present application may be arbitrarily combined with each other, and the same should be considered as the disclosure of the present application as long as the concept of the present application is not violated.

In the method embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not limit the implementation process of the embodiments of the present application.

The multi-stage hydrogen charging control method provided by the embodiment of the present application is explained above, and the device for controlling the multi-stage hydrogen charging control device provided by the embodiment of the present application is explained below.

Fig. 12 is a schematic block diagram of a multi-stage hydrogen charging control apparatus 300 provided in an embodiment of the present application. For example, the apparatus 300 may be used to control the multi-stage hydrogen charging control device shown in fig. 1, i.e., the multi-stage hydrogen charging control device includes a hydrogen generator, a metering chamber E1, and a vacuum chamber E2; the hydrogen generator is used for generating hydrogen; the hydrogen generator is connected to the metering chamber E1 by a control valve D3; the metrology chamber E1 is connected to the vacuum chamber E2 by a first valve D4; one end of the vacuum chamber E2 is provided with a containing pipeline which is used for containing a material to be absorbed by hydrogen, the containing pipeline is arranged inside a tube furnace which is used for heating the containing pipeline so as to construct a hydrogen charging environment with the temperature being more than a preset threshold value; for ease of understanding, the apparatus 300 provided herein will be described below by way of example with the apparatus 300 controlling the multi-stage hydrogen charging control device shown in fig. 1.

As shown in fig. 12, the apparatus 300 may include:

a first control unit 310 for making the metering chamber E1 take a preset amount of hydrogen from the hydrogen generator by controlling the state of the control valve D3;

a second control unit 320, configured to open the first valve D4, so that the hydrogen gas in the metering chamber E1 is input into the vacuum chamber E2, so that the material to be hydrogen absorbed absorbs hydrogen gas in a hydrogen-filled environment.

In some embodiments, the multi-stage hydrogen charging control apparatus further comprises a first sensor S1, the first sensor S1 being connected to the metering chamber E1;

the first control unit 310 is specifically configured to:

determining the maximum pressure of the metering chamber E1 based on the final pressure of the space formed by the vacuum chamber E2 and the metering chamber E1 after the hydrogen is absorbed by the material to be hydrogen absorbed, the mass of the material to be hydrogen absorbed and the hydrogen absorption amount of the material to be hydrogen absorbed;

based on the maximum pressure, the metering chamber E1 is caused to take a preset amount of hydrogen from the hydrogen generator by controlling the state of the control valve D3.

In some embodiments, the first control unit 310 is specifically configured to:

the maximum pressure is determined based on the following equation:

P^I＝(P^E-M_S*C_T/K)/Λ；

In some embodiments, the first control unit 310 is specifically configured to:

when the pressure of the metering chamber E1 detected by the first sensor S1 is equal to the maximum pressure, the control valve D3 is closed.

In some embodiments, the first control unit 310 is specifically configured to:

determining the initial pressure of the space formed by the vacuum chamber E2 and the metering chamber E1 before the hydrogen to be absorbed material absorbs hydrogen gas based on the maximum pressure;

for each of the multiple hydrogen charging processes, the control valve D3 is closed when the pressure measured by the first sensor S1 reaches the trigger pressure corresponding to the hydrogen charging process.

In some embodiments, the multi-stage hydrogen charging control apparatus further comprises a second sensor S2, the second sensor S2 is connected with the vacuum chamber E2, the sensing accuracy of the second sensor S2 is greater than that of the first sensor S1;

the first control unit 310 is specifically configured to:

In some embodiments, the multi-stage hydrogen charging control apparatus further comprises an air inlet duct, one end of which is connected to one end of the control valve D3 through a second valve D2, the other end of the control valve D3 is connected to the metering chamber E1, and the other end of which is connected to the hydrogen generator through a third valve D1;

the first control unit 310 is specifically configured to:

wherein, before the metering chamber E1 takes a preset amount of hydrogen from the hydrogen generator by controlling the state of the control valve D3, the first control unit 310 is further configured to:

the multistage hydrogen charging control device is cleaned at least once by using the hydrogen generated from the hydrogen generator by controlling the states of the control valve D3, the first valve D4, the second valve D2, the fourth valve C1, the fifth valve C2, the sixth valve C3 and the seventh valve D5;

the gas inlet pipe is purged at least once by the hydrogen gas generated from the hydrogen generator by controlling the states of the fifth valve C2, the sixth valve C3, and the seventh valve D5.

It is to be understood that apparatus embodiments and method embodiments may correspond to one another and that similar descriptions may refer to method embodiments. To avoid repetition, further description is omitted here. Specifically, the device 300 may correspond to a corresponding main body in the method 200 for executing the embodiment of the present application, and each unit in the device 300 is respectively for implementing a corresponding flow in the method 200, and is not described herein again for brevity.

It should also be understood that the units in the device 300 related to the embodiments of the present application may be respectively or entirely combined into one or several other units to form one or several other units, or some unit(s) therein may be further split into multiple functionally smaller units to form one or several other units, which may achieve the same operation without affecting the achievement of the technical effect of the embodiments of the present application. The units are divided based on logic functions, and in practical application, the functions of one unit can be realized by a plurality of units, or the functions of a plurality of units can be realized by one unit. In other embodiments of the present application, the apparatus 300 may also include other units, and in practical applications, the functions may also be implemented by being assisted by other units, and may be implemented by cooperation of a plurality of units. According to another embodiment of the present application, the apparatus 300 according to the embodiment of the present application may be configured by running a computer program (including program codes) capable of executing the steps involved in the corresponding method on a general-purpose computing apparatus including a general-purpose computer such as a Central Processing Unit (CPU), a random access storage medium (RAM), a read only storage medium (ROM), and the like, and a storage element, and implementing the multi-stage hydrogen charging control method according to the embodiment of the present application. The computer program may be loaded on a computer-readable storage medium, for example, and loaded and executed in an electronic device through the computer-readable storage medium to implement the methods of the embodiments of the present application.

In other words, the above-mentioned units may be implemented in hardware, may be implemented by instructions in software, and may also be implemented in a combination of hardware and software. Specifically, the steps of the method embodiments in the present application may be implemented by integrated logic circuits of hardware in a processor and/or instructions in the form of software, and the steps of the method disclosed in conjunction with the embodiments in the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software in the decoding processor. Alternatively, the software may reside in random access memory, flash memory, read only memory, programmable read only memory, electrically erasable programmable memory, registers, and the like, as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps in the above method embodiments in combination with hardware thereof.

Fig. 13 is a schematic structural diagram of an electronic device 400 provided in an embodiment of the present application.

As shown in fig. 13, the electronic device 400 includes at least a processor 410 and a computer-readable storage medium 420. Wherein the processor 410 and the computer-readable storage medium 420 may be connected by a bus or other means. The computer-readable storage medium 420 is used for storing a computer program 421, the computer program 421 comprising computer instructions, the processor 410 being used for executing the computer instructions stored by the computer-readable storage medium 420. The processor 410 is a computing core and a control core of the electronic device 400, which is adapted to implement one or more computer instructions, in particular to load and execute the one or more computer instructions to implement a corresponding method flow or a corresponding function.

By way of example, processor 410 may also be referred to as a Central Processing Unit (CPU). The processor 410 may include, but is not limited to: general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, and the like.

By way of example, the computer-readable storage medium 420 may be a high-speed RAM memory or a Non-volatile memory (Non-volatile memory), such as at least one disk memory; optionally, at least one computer-readable storage medium may be located remotely from the processor 410. In particular, computer-readable storage media 420 include, but are not limited to: volatile memory and/or non-volatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), and Direct Rambus RAM (DR RAM).

As shown in fig. 13, the electronic device 400 may also include a transceiver 430.

The processor 410 may control the transceiver 430 to communicate with other devices, and specifically, may transmit information or data to the other devices or receive information or data transmitted by the other devices. The transceiver 430 may include a transmitter and a receiver. The transceiver 430 may further include antennas, and the number of antennas may be one or more.

It should be understood that the various components in the communication device 400 are connected by a bus system that includes a power bus, a control bus, and a status signal bus in addition to a data bus.

In one implementation, the electronic device 400 can be any electronic device having data processing capabilities; the computer readable storage medium 420 has first computer instructions stored therein; the first computer instructions stored in the computer-readable storage medium 420 are loaded and executed by the processor 410 to implement the corresponding steps in the method embodiment shown in fig. 1; in a specific implementation, the first computer instruction in the computer-readable storage medium 420 is loaded by the processor 410 and performs the corresponding steps, which are not described herein again to avoid repetition.

According to another aspect of the present application, a computer-readable storage medium (Memory) is provided, which is a Memory device in the electronic device 400 and is used for storing programs and data. Such as computer-readable storage media 420. It is understood that the computer readable storage medium 420 herein may include both a built-in storage medium in the electronic device 400 and, of course, an extended storage medium supported by the electronic device 400. The computer readable storage medium provides a storage space that stores an operating system of the electronic device 400. Also stored in the memory space are one or more computer instructions, which may be one or more computer programs 421 (including program code), suitable for loading and execution by the processor 410.

According to another aspect of the present application, the embodiments of the present application also provide a computer program product or a computer program, which includes computer instructions, which are stored in a computer-readable storage medium. Such as a computer program 421. At this time, the data processing apparatus 400 may be a computer, and the processor 410 reads the computer instructions from the computer-readable storage medium 420, and the processor 410 executes the computer instructions, so that the computer performs the multi-stage hydrogen charging control method provided in the above-described various alternatives.

In other words, when implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes of the embodiments of the present application are executed in whole or in part or to realize the functions of the embodiments of the present application. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.).

Those of ordinary skill in the art will appreciate that the various illustrative elements and process steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

Finally, it should be noted that the above mentioned embodiments are only specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present application, and all such changes or substitutions should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. The multi-stage hydrogen charging method is applicable to a multi-stage hydrogen charging control device, and the multi-stage hydrogen charging control device comprises a hydrogen generator, a metering chamber, a vacuum chamber and a tube furnace; the hydrogen generator is used for generating hydrogen; the hydrogen generator is connected to the metering chamber through a control valve; the metering chamber is connected to the vacuum chamber through a first valve; one end of the vacuum chamber is provided with an accommodating pipeline which is used for accommodating a material to be subjected to hydrogen absorption; the accommodating pipeline is arranged inside the tube furnace, and the tube furnace is used for heating the accommodating pipeline to construct a hydrogen charging environment with the temperature greater than a preset threshold value;

the method comprises the following steps:

determining an initial pressure of a space formed by the vacuum chamber and the metering chamber before the hydrogen to be absorbed material absorbs hydrogen gas based on the maximum pressure;

determining a plurality of trigger pressures corresponding to the pressure drops respectively, wherein the trigger pressures correspond to a plurality of hydrogen charging processes respectively;

for each hydrogen charging process in the multiple hydrogen charging processes, closing the control valve when the pressure of the metering chamber reaches the trigger pressure corresponding to the hydrogen charging process, so that the metering chamber obtains a preset amount of hydrogen from the hydrogen generator; and opening the first valve to input the hydrogen of the metering chamber into the vacuum chamber so that the material to be subjected to hydrogen absorption absorbs the hydrogen in a hydrogen charging environment.

2. The method of claim 1, wherein the multi-stage hydrogen charging control device further comprises a first sensor coupled to the metering chamber;

wherein, when the pressure of the metering chamber reaches the trigger pressure corresponding to the hydrogen charging process, closing the control valve comprises:

and closing the control valve when the pressure measured by the first sensor reaches the trigger pressure corresponding to the hydrogen charging process.

3. The method according to claim 2, wherein the determining the maximum pressure of the metering chamber based on the final pressure of the space formed by the vacuum chamber and the metering chamber after the hydrogen absorption of the material to be hydrogen absorbed, the mass of the material to be hydrogen absorbed, and the hydrogen absorption amount of the material to be hydrogen absorbed comprises:

determining the maximum pressure based on the following formula:

P^I＝(P^E-M_S*C_T/K)/Λ；

wherein, P^IRepresents said maximum pressure, P^ERepresents the final pressure, M_SRepresents the mass of the material to be hydrogen-absorbed, C_TRepresenting the hydrogen absorption amount of the material to be absorbed, K representing a scale factor, and Λ representing the ratio of the pressure of the space formed by the vacuum chamber and the metering chamber to the pressure of the metering chamber.

4. The method of claim 2, wherein the multi-stage hydrogen charging control device further comprises a second sensor connected to the vacuum chamber, the second sensor having a sensing accuracy greater than that of the first sensor;

acquiring the pressure detected by the second sensor under the condition that the control valve and the first valve are opened;

closing the first valve and opening the control valve when the pressure detected by the second sensor is less than or equal to a preset pressure;

and closing the control valve when the pressure of the metering chamber reaches the trigger pressure corresponding to the hydrogen charging process.

5. The method according to claim 1, wherein the multi-stage hydrogen charging control device further comprises an intake duct, one end of which is connected to one end of the control valve through a second valve, the other end of which is connected to the metering chamber, and the other end of which is connected to the hydrogen generator through a third valve;

opening the second valve and the control valve;

6. The method of claim 5, wherein the multi-stage hydrogen charging control apparatus further comprises a molecular vacuum pump and a mechanical vacuum pump; the molecular vacuum pump is connected to the vacuum chamber through a fourth valve, the mechanical vacuum pump is also connected to the molecular vacuum pump through a fifth valve, the mechanical vacuum pump is connected to one end of a seventh valve through a sixth valve, and the other end of the seventh valve is connected to the gas inlet pipeline;

wherein prior to said opening said second valve and said control valve, said method further comprises:

cleaning the multi-stage hydrogen charging control device at least once by using hydrogen generated by the hydrogen generator by controlling the states of the control valve, the first valve, the second valve, the fourth valve, the fifth valve, the sixth valve and the seventh valve;

and cleaning the gas inlet pipeline at least once by using the hydrogen generated by the hydrogen generator by controlling the states of the fifth valve, the sixth valve and the seventh valve.

7. The multi-stage hydrogen charging control equipment is characterized by being used for controlling a multi-stage hydrogen charging control device, wherein the multi-stage hydrogen charging control device comprises a hydrogen generator, a metering chamber, a vacuum chamber and a tubular furnace; the hydrogen generator is used for generating hydrogen; the hydrogen generator is connected to the metering chamber through a control valve; the metering chamber is connected to the vacuum chamber through a first valve; one end of the vacuum chamber is provided with an accommodating pipeline which is used for accommodating a material to be subjected to hydrogen absorption; the accommodating pipeline is arranged inside the tube furnace, and the tube furnace is used for heating the accommodating pipeline to construct a hydrogen charging environment with the temperature greater than a preset threshold value;

the apparatus comprises:

a first determination unit for determining the maximum pressure of the metering chamber based on the final pressure of the space formed by the vacuum chamber and the metering chamber after the hydrogen to be absorbed by the material to be hydrogen absorbed, the mass of the material to be hydrogen absorbed and the hydrogen absorption amount of the material to be hydrogen absorbed;

a second determination unit configured to determine an initial pressure of a space formed by the vacuum chamber and the metering chamber before the hydrogen gas is absorbed by the material to be hydrogen absorbed, based on the maximum pressure;

a dividing unit configured to divide a pressure drop between the initial pressure and the final pressure into a plurality of pressure drops when the pressure drop is greater than or equal to a preset threshold;

a third determining unit, configured to determine a plurality of trigger pressures corresponding to the plurality of pressure drops, where the plurality of trigger pressures correspond to the plurality of hydrogen charging processes, respectively;

the hydrogen charging control unit is used for closing the control valve under the condition that the pressure of the metering chamber reaches the trigger pressure corresponding to the hydrogen charging process aiming at each hydrogen charging process in the multiple hydrogen charging processes, so that the metering chamber obtains a preset amount of hydrogen from the hydrogen generator; and opening the first valve to input the hydrogen of the metering chamber into the vacuum chamber so that the material to be subjected to hydrogen absorption absorbs the hydrogen in a hydrogen charging environment.

8. An electronic device, comprising:

a processor and a memory for storing a computer program, the processor for invoking and executing the computer program stored in the memory to perform the method of any one of claims 1 to 6.