Shared power bank solid hydrogen power supply system

Abstract

The invention discloses a shared power bank solid hydrogen power supply system, which relates to the technical field of shared power banks and comprises a solid hydrogen storage unit, a power supply unit, an electric energy distribution unit, an energy storage unit, a battery monitoring unit and an automatic energy supply unit. The solid hydrogen power supply system is adopted as a power supply of the shared power bank, the solid hydrogen power supply system has high energy density, more energy can be stored in a small space, the power supply system is made to be smaller in size and lighter in weight, only water vapor is generated after hydrogen reaction, no gas pollutant is discharged, environmental pollution is reduced, and energy is saved. The storage form of solid hydrogen is safer and more portable than that of liquid hydrogen, a hydrogen source can be quickly replaced, dependence on an external power supply is reduced, charging service can be provided in a place without a traditional power grid, the flexibility and environmental sustainability of the shared power bank pile are improved, the operation efficiency of the shared power bank pile can be improved, and the cost of the shared power bank pile is reduced. And the idle time of the equipment caused by charging is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of shared power banks, and in particular to a solid hydrogen power supply system for shared power banks. Background Art

[0002] The working principle of existing shared power banks is to convert 220V AC into stable DC to provide instant charging services for users' mobile devices. The battery pack inside the power bank stores or directly outputs DC power, and monitors the charging process through a smart chip to prevent dangers such as overcharging, over-discharging, short circuit and overheating. Users borrow or return power banks by scanning the QR code on the device, and the device is billed and managed through the mobile payment platform. However, the biggest disadvantage is that the power bank piles require continuous 220V AC power supply to work properly, which limits the geographical location of the power bank piles, infrastructure dependence, power outage impact and energy waste;

[0003] In view of the above technical defects, a solution is now proposed. Summary of the invention

[0004] The purpose of the present invention is to improve the flexibility and environmental sustainability of shared power charging piles, while improving the operational efficiency of shared power charging piles and reducing the idle time of equipment caused by charging.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a shared power bank solid hydrogen power supply system, including a solid hydrogen storage unit, a power supply unit, an electric energy distribution unit, an energy storage unit, a battery monitoring unit and an automatic energy supply unit;

[0006] The solid-state hydrogen storage unit is connected to the power supply unit through a hydrogen supply valve. The power supply unit chemically reacts with oxygen through an internal fuel cell to convert chemical energy into electrical energy. The power supply unit and the energy storage unit are interconnected to store electrical energy through the energy storage unit.

[0007] The battery monitoring unit includes a marking module and a monitoring module, wherein the marking module is used to mark each shared power bank in the power bank pile as M, where M is a natural number greater than 1;

[0008] The power supply unit obtains the voltage and current output by the shared power bank in real time through a voltage and current tester electrically connected to each shared power bank, calculates the remaining power data in the shared power bank based on the voltage and current, and sends it to the power distribution unit;

[0009] The automatic energy supply unit is used to obtain the remaining power data of each shared power bank in the power bank pile, calculate its standby efficiency according to the device parameters of the shared power bank, and determine whether the shared power bank needs to be charged according to the charging efficiency and the remaining power data to generate a charging signal and send it to the charging prediction module;

[0010] The electric energy distribution unit includes a charging prediction module and an energy storage calculation module. The charging prediction module is used for charging signal processing, obtaining the remaining power data in the shared power bank to be charged according to the charging signal, and calculating the charging demand according to the remaining power data and the number of shared power banks;

[0011] The energy storage calculation module is used to obtain the remaining energy storage in the energy storage unit, determine whether energy storage is needed based on the difference between the remaining energy storage and the charging demand, and generate an energy storage signal to the general control unit. At the same time, the energy storage efficiency is obtained during the energy storage process, and the predicted energy storage is calculated based on the charging demand, and then the energy storage time is obtained. After the energy storage time is over, a shutdown signal is generated and sent to the general control unit;

[0012] The main control unit always opens the hydrogen supply valve after receiving the energy storage signal, starts the chemical reaction between hydrogen and oxygen, converts chemical energy into electrical energy, and provides new electrical energy to the energy storage unit to maintain the battery power. At the same time, it automatically closes the hydrogen supply valve after receiving the shutdown signal to stop the chemical reaction between hydrogen and oxygen.

[0013] Furthermore, the solid-state hydrogen storage unit realizes solid-state storage of hydrogen by reacting hydrogen with certain metals to generate metal hydrides. The power supply unit is specifically a hydrogen fuel cell. The solid-state hydrogen storage unit opens the hydrogen supply valve after depressurization to provide the hydrogen fuel cell with the hydrogen required for the reaction.

[0014] Furthermore, it also includes a gas storage monitoring unit that obtains real-time concentration data of hydrogen through a hydrogen concentration sensor arranged in the solid-state hydrogen storage unit, and obtains real-time pressure data and temperature data in the solid-state hydrogen storage unit, and then calculates the remaining amount of hydrogen. When the remaining amount of hydrogen is lower than the preset minimum storage requirement, a reminder signal is generated and sent to the main control unit.

[0015] Furthermore, the specific process of generating the charging signal is as follows:

[0016] S101, obtaining the remaining power data Ei in the shared power bank, and obtaining the device parameters of the shared power bank, wherein the device parameters include the self-discharge rate Wi of the battery in the shared power bank and the power consumption We of the battery management system in the shared power bank;

[0017] S102, obtaining the real-time temperature T of the environment where the shared power bank is located through a temperature sensor arranged outside the shared charging pile, and calculating the standby efficiency η of the shared power bank according to the device parameters of the shared power bank: Wherein, e1, e2 and e3 are preset weight coefficients and e1, e2 and e3 are all less than 1. The standby efficiency is used to indicate the standby performance of the shared power bank under the influence of the current device parameters and ambient temperature. The higher the standby efficiency, the better the standby performance of the shared power bank and the longer the standby time. On the contrary, the lower the standby efficiency, the worse the standby performance of the shared power bank and the shorter the standby time.

[0018] S103, calculating the chargeable standby time ti of the shared power bank according to the following formula: Where E0 is the initial power data when the shared power bank is fully charged, and k is the preset influence coefficient;

[0019] S104: according to the preset standby threshold tmin, if the chargeable standby time ti of the shared power bank is less than the standby threshold tmin, a charging signal is generated and sent to the charging prediction module;

[0020] If the rechargeable standby time ti of the shared power bank is greater than or equal to the standby threshold tmin, no signal is generated.

[0021] Furthermore, the specific process of calculating the charging demand is as follows:

[0022] S201, obtaining a charging signal, and recording the frequency Fn of the charging signal, and correspondingly obtaining the remaining power data Ei in the shared power bank to be charged;

[0023] S202, calculating the charging demand Ef according to the following formula: Among them, E0 is the initial power data when the shared power bank is fully charged, d is the self-consumption coefficient of the battery in the shared power bank during the charging process, and the value of d is set according to the performance of the battery in the shared power bank.

[0024] Furthermore, the specific process of generating the energy storage signal is as follows:

[0025] S301, obtaining real-time voltage data in the energy storage unit through a voltage sensor provided in the energy storage unit, and calculating the energy storage margin Er according to the calculation principle of the voltage measurement method;

[0026] S302, obtaining the charging demand Ef, and calculating the charging demand difference ΔE: ΔE=Er-Ef;

[0027] S303, obtaining a preset energy storage threshold, and if the charging demand difference is greater than or equal to the energy storage threshold, generating an energy storage signal to the general control unit;

[0028] If the charging demand difference is greater than or equal to the energy storage threshold, no signal is generated.

[0029] Furthermore, the specific process of generating a shutdown signal is as follows:

[0030] S401, obtaining the normal energy storage total value EA and the charging demand Ef of the energy storage unit, and calculating the total predicted energy storage ED: ED = EA - ΔE + Ef;

[0031] S402, during the energy storage process, obtain the real-time electric power Pout output by the power supply unit and the total chemical energy Pin released by the reaction of the solid hydrogen storage unit, and calculate the energy storage efficiency ηe according to the following formula:

[0032] S403, calculating the energy storage time te according to the following formula: Where di is a preset normalization coefficient, which is used to convert the energy storage efficiency ηe into a rate value that can be calculated together with the predicted energy storage capacity.

[0033] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0034] The shared power bank solid hydrogen power supply system adopts a solid hydrogen power supply system as the power source of the shared power bank. The solid hydrogen power supply system provided by the present invention is a technology that stores hydrogen in a solid form and uses it for energy conversion. It has a higher energy density and can store more energy in a smaller space, making the power supply system smaller in size and lighter in weight. Hydrogen is a clean energy source. After the reaction, only water vapor is produced, and no gaseous pollutants are emitted, which is beneficial to reducing environmental pollution. The storage form of solid hydrogen is safer and more portable than liquid hydrogen, which is beneficial to the rapid replacement of hydrogen sources and reduces dependence on external power sources. Charging services can be provided in places without traditional power grids, thereby improving the flexibility and environmental sustainability of shared power bank piles. At the same time, it can improve the operating efficiency of shared power bank piles and reduce the idle time of equipment caused by charging. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic diagram of the system structure of the present invention is shown. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Example:

[0038] like Figure 1As shown, a shared power bank solid hydrogen power supply system includes a solid hydrogen storage unit, a power supply unit, an electric energy distribution unit, an energy storage unit, a battery monitoring unit and an automatic energy supply unit;

[0039] The solid-state hydrogen storage unit is connected to the power supply unit through a hydrogen supply valve. The power supply unit chemically reacts with oxygen through an internal fuel cell to convert chemical energy into electrical energy. The power supply unit and the energy storage unit are interconnected to store electrical energy through the energy storage unit.

[0040] The solid-state hydrogen storage unit realizes the solid-state storage of hydrogen by reacting hydrogen with certain metals to generate metal hydrides. The power supply unit is specifically a hydrogen fuel cell. After the pressure is reduced, the solid-state hydrogen storage unit opens the hydrogen supply valve to provide the hydrogen fuel cell with the hydrogen required for the reaction.

[0041] The battery monitoring unit includes a marking module and a monitoring module. The marking module is used to mark each shared power bank in the power bank pile as M, where M is a natural number greater than 1;

[0042] The power supply unit obtains the voltage and current output by the shared power bank in real time through a voltage and current tester electrically connected to each shared power bank, calculates the remaining power data in the shared power bank based on the voltage and current, and sends it to the power distribution unit;

[0043] The automatic energy supply unit is used to obtain the remaining power data of each shared power bank in the power bank pile, calculate its standby efficiency according to the device parameters of the shared power bank, and determine whether the shared power bank needs to be charged according to the charging efficiency and the remaining power data to generate a charging signal and send it to the charging prediction module;

[0044] The specific process of generating a charging signal is as follows:

[0045] S101, obtaining the remaining power data Ei in the shared power bank, and obtaining the device parameters of the shared power bank, the device parameters including the self-discharge rate Wi of the battery in the shared power bank and the power consumption We of the battery management system in the shared power bank;

[0046] S102, obtaining the real-time temperature T of the environment where the shared power bank is located through a temperature sensor arranged outside the shared charging pile, and calculating the standby efficiency η of the shared power bank according to the device parameters of the shared power bank: Wherein, e1, e2 and e3 are preset weight coefficients and e1, e2 and e3 are all less than 1. The standby efficiency is used to indicate the standby performance of the shared power bank under the influence of the current device parameters and ambient temperature. The higher the standby efficiency, the better the standby performance of the shared power bank and the longer the standby time. On the contrary, the lower the standby efficiency, the worse the standby performance of the shared power bank and the shorter the standby time.

[0047] S103, calculating the chargeable standby time ti of the shared power bank according to the following formula: Where E0 is the initial power data when the shared power bank is fully charged, and k is the preset influence coefficient;

[0048] S104: according to the preset standby threshold tmin, if the chargeable standby time ti of the shared power bank is less than the standby threshold tmin, a charging signal is generated and sent to the charging prediction module;

[0049] If the rechargeable standby time ti of the shared power bank is greater than or equal to the standby threshold tmin, no signal is generated.

[0050] The electric energy distribution unit includes a charging prediction module and an energy storage calculation module. The charging prediction module is used for charging signal processing, and obtains the remaining power data in the shared power bank to be charged according to the charging signal, and calculates the charging demand according to the remaining power data and the number of shared power banks.

[0051] The specific process of calculating charging demand is as follows:

[0052] S201, obtaining a charging signal, and recording the frequency Fn of the charging signal, and correspondingly obtaining the remaining power data Ei in the shared power bank to be charged;

[0053] S202, calculating the charging demand Ef according to the following formula: Among them, E0 is the initial power data when the shared power bank is fully charged, d is the self-consumption coefficient of the battery in the shared power bank during the charging process, and the value of d is set according to the performance of the battery in the shared power bank.

[0054] The energy storage calculation module is used to obtain the remaining energy storage in the energy storage unit, determine whether energy storage is needed based on the difference between the remaining energy storage and the charging demand, and generate an energy storage signal to the general control unit. At the same time, the energy storage efficiency is obtained during the energy storage process, and the predicted energy storage is calculated based on the charging demand, and then the energy storage time is obtained. After the energy storage time is over, a shutdown signal is generated and sent to the general control unit;

[0055] The specific process of generating energy storage signal is as follows:

[0056] S301, obtaining real-time voltage data in the energy storage unit through a voltage sensor provided in the energy storage unit, and calculating the energy storage margin Er according to the calculation principle of the voltage measurement method;

[0057] S302, obtaining the charging demand Ef, and calculating the charging demand difference ΔE: ΔE=Er-Ef;

[0058] S303, obtaining a preset energy storage threshold, and if the charging demand difference is greater than or equal to the energy storage threshold, generating an energy storage signal to the general control unit;

[0059] If the charging demand difference is greater than or equal to the energy storage threshold, no signal is generated.

[0060] The specific process of generating a shutdown signal is as follows:

[0061] S401, obtaining the normal energy storage total value EA and the charging demand Ef of the energy storage unit, and calculating the total predicted energy storage ED: ED = EA - ΔE + Ef;

[0062] S402, during the energy storage process, obtain the real-time electric power Pout output by the power supply unit and the total chemical energy Pin released by the reaction of the solid hydrogen storage unit, and calculate the energy storage efficiency ηe according to the following formula:

[0063] S403, calculating the energy storage time te according to the following formula: Where di is a preset normalization coefficient, which is used to convert the energy storage efficiency ηe into a rate value that can be calculated together with the predicted energy storage capacity.

[0064] The main control unit always opens the hydrogen supply valve after receiving the energy storage signal, starts the chemical reaction between hydrogen and oxygen, converts chemical energy into electrical energy, and provides new electrical energy to the energy storage unit to maintain the battery power. At the same time, it automatically closes the hydrogen supply valve after receiving the shutdown signal to stop the chemical reaction between hydrogen and oxygen.

[0065] It also includes a gas storage monitoring unit that obtains real-time concentration data of hydrogen through a hydrogen concentration sensor set in the solid-state hydrogen storage unit, and obtains real-time pressure data and temperature data in the solid-state hydrogen storage unit, and then calculates the remaining amount of hydrogen. When the remaining amount of hydrogen is lower than the preset minimum storage requirement, a reminder signal is generated to the main control unit.

[0066] The present invention adopts a solid hydrogen power supply system as the power source of the shared power bank. The solid hydrogen power supply system provided by the present invention is a technology that stores hydrogen in a solid form and uses it for energy conversion. It has a higher energy density and can store more energy in a smaller space, making the power supply system smaller in size and lighter in weight. Hydrogen is a clean energy source. After the reaction, only water vapor is produced, and no gaseous pollutants are emitted, which is beneficial to reducing environmental pollution. The storage form of solid hydrogen is safer and more portable than liquid hydrogen, which is beneficial to the rapid replacement of hydrogen sources and reduces dependence on external power sources. Charging services can be provided in places without traditional power grids, thereby improving the flexibility and environmental sustainability of shared power bank piles. At the same time, it can improve the operating efficiency of shared power bank piles and reduce the idle time of equipment caused by charging.

[0067] The size of the interval and threshold is set to facilitate comparison. The size of the threshold depends on the amount of sample data and the number of bases set by technical personnel in this field for each group of sample data; as long as it does not affect the proportional relationship between the parameter and the quantized value.

[0068] The above formulas are all dimensionless and numerical calculations. The formula is a formula obtained by collecting a large amount of data and performing software simulation to obtain the most recent real situation. The preset parameters in the formula are set by technicians in this field according to actual conditions.

[0069] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A shared power bank solid hydrogen power supply system, characterized in that: It includes a solid hydrogen storage unit, a power supply unit, an electric energy distribution unit, an energy storage unit, a battery monitoring unit and an automatic energy supply unit; The solid-state hydrogen storage unit is connected to the power supply unit through a hydrogen supply valve. The power supply unit chemically reacts with oxygen through an internal fuel cell to convert chemical energy into electrical energy. The power supply unit and the energy storage unit are interconnected to store electrical energy through the energy storage unit. The battery monitoring unit includes a marking module and a monitoring module, wherein the marking module is used to mark each shared power bank in the power bank pile as M, where M is a natural number greater than 1; The power supply unit obtains the voltage and current output by the shared power bank in real time through a voltage and current tester electrically connected to each shared power bank, calculates the remaining power data in the shared power bank based on the voltage and current, and sends it to the power distribution unit; The automatic energy supply unit is used to obtain the remaining power data of each shared power bank in the power bank pile, calculate its standby efficiency according to the device parameters of the shared power bank, and determine whether the shared power bank needs to be charged according to the charging efficiency and the remaining power data to generate a charging signal and send it to the charging prediction module; The electric energy distribution unit includes a charging prediction module and an energy storage calculation module. The charging prediction module is used for charging signal processing, obtaining the remaining power data in the shared power bank to be charged according to the charging signal, and calculating the charging demand according to the remaining power data and the number of shared power banks; The energy storage calculation module is used to obtain the remaining energy storage in the energy storage unit, determine whether energy storage is needed based on the difference between the remaining energy storage and the charging demand, and generate an energy storage signal to the general control unit. At the same time, the energy storage efficiency is obtained during the energy storage process, and the predicted energy storage is calculated based on the charging demand, and then the energy storage time is obtained. After the energy storage time is over, a shutdown signal is generated and sent to the general control unit; The main control unit always opens the hydrogen supply valve after receiving the energy storage signal, starts the chemical reaction between hydrogen and oxygen, converts chemical energy into electrical energy, and provides new electrical energy to the energy storage unit to maintain the battery power. At the same time, it automatically closes the hydrogen supply valve after receiving the shutdown signal to stop the chemical reaction between hydrogen and oxygen.

2. The shared power bank solid hydrogen power supply system according to claim 1 is characterized in that: The solid-state hydrogen storage unit realizes solid-state storage of hydrogen by reacting hydrogen with certain metals to generate metal hydrides. The power supply unit is specifically a hydrogen fuel cell. After reducing the pressure, the solid-state hydrogen storage unit opens the hydrogen supply valve to provide the hydrogen fuel cell with the hydrogen required for the reaction.

3. The shared power bank solid hydrogen power supply system according to claim 1 is characterized in that: It also includes a gas storage monitoring unit that obtains real-time concentration data of hydrogen through a hydrogen concentration sensor set in the solid-state hydrogen storage unit, and obtains real-time pressure data and temperature data in the solid-state hydrogen storage unit, and then calculates the remaining amount of hydrogen. When the remaining amount of hydrogen is lower than the preset minimum storage requirement, a reminder signal is generated to the main control unit.

4. The shared power bank solid hydrogen power supply system according to claim 1 is characterized in that: The specific process of generating a charging signal is as follows: S101, obtaining the remaining power data Ei in the shared power bank, and obtaining the device parameters of the shared power bank, wherein the device parameters include the self-discharge rate Wi of the battery in the shared power bank and the power consumption We of the battery management system in the shared power bank; S102, obtaining the real-time temperature T of the environment where the shared power bank is located through a temperature sensor arranged outside the shared charging pile, and calculating the standby efficiency η of the shared power bank according to the device parameters of the shared power bank: Wherein e1, e2 and e3 are preset weight coefficients and e1, e2 and e3 are all less than 1; S103, calculating the chargeable standby time ti of the shared power bank according to the following formula: Where E0 is the initial power data when the shared power bank is fully charged, and k is the preset influence coefficient; S104: according to the preset standby threshold tmin, if the chargeable standby time ti of the shared power bank is less than the standby threshold tmin, a charging signal is generated and sent to the charging prediction module; If the rechargeable standby time ti of the shared power bank is greater than or equal to the standby threshold tmin, no signal is generated.

5. The shared power bank solid hydrogen power supply system according to claim 1 is characterized in that: The specific process of calculating charging demand is as follows: S201, obtaining a charging signal, and recording the frequency Fn of the charging signal, and correspondingly obtaining the remaining power data Ei in the shared power bank to be charged; S202, calculating the charging demand Ef according to the following formula: Among them, E0 is the initial power data when the shared power bank is fully charged, d is the self-consumption coefficient of the battery in the shared power bank during the charging process, and the value of d is set according to the performance of the battery in the shared power bank.

6. The shared power bank solid hydrogen power supply system according to claim 1, characterized in that: The specific process of generating energy storage signal is as follows: S301, obtaining real-time voltage data in the energy storage unit through a voltage sensor provided in the energy storage unit, and calculating the energy storage margin Er according to the calculation principle of the voltage measurement method; S302, obtaining the charging demand Ef, and calculating the charging demand difference ΔE: ΔE=Er-Ef; S303, obtaining a preset energy storage threshold, and if the charging demand difference is greater than or equal to the energy storage threshold, generating an energy storage signal to the general control unit; If the charging demand difference is greater than or equal to the energy storage threshold, no signal is generated.

7. The shared power bank solid hydrogen power supply system according to claim 1, characterized in that: The specific process of generating a shutdown signal is as follows: S401, obtaining the normal energy storage total value EA and the charging demand Ef of the energy storage unit, and calculating the total predicted energy storage ED: ED = EA - ΔE + Ef; S402, during the energy storage process, obtain the real-time electric power Pout output by the power supply unit and the total chemical energy Pin released by the reaction of the solid hydrogen storage unit, and calculate the energy storage efficiency ηe according to the following formula: S403, calculating the energy storage time te according to the following formula: Where di is a preset normalization coefficient, which is used to convert the energy storage efficiency ηe into a rate value that can be calculated together with the predicted energy storage capacity.

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