CN113071375A - Hydrogen fuel electric vehicle and management method and system thereof - Google Patents
Hydrogen fuel electric vehicle and management method and system thereof Download PDFInfo
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- CN113071375A CN113071375A CN202110324208.9A CN202110324208A CN113071375A CN 113071375 A CN113071375 A CN 113071375A CN 202110324208 A CN202110324208 A CN 202110324208A CN 113071375 A CN113071375 A CN 113071375A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/30—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
- H01M8/04156—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying with product water removal
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/043—Processes for controlling fuel cells or fuel cell systems applied during specific periods
- H01M8/04302—Processes for controlling fuel cells or fuel cell systems applied during specific periods applied during start-up
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
Abstract
The invention provides a hydrogen fuel electric vehicle and a management method and a management system thereof, wherein whether a hydrogen fuel cell assembly needs to be started or not is determined according to the charge condition of a lithium battery; adjusting the drainage time interval of the hydrogen fuel cell component according to the load power, wherein when the load power is higher, the power supply power of the default hydrogen fuel cell component is also higher, so that more water can be generated in a reaction manner, the drainage time interval is set to be shorter, and when the load power is lower, the drainage time interval is correspondingly lengthened; according to the ratio of the current actual drainage times to the total drainage times, the current residual amount of hydrogen is estimated, and a user can conveniently obtain hydrogen amount information.
Description
Technical Field
The invention relates to the technical field of hydrogen fuel cell management, in particular to a hydrogen fuel electric vehicle and a management method and a management system thereof.
Background
At present, lead-acid batteries or lithium ion batteries are commonly used as power sources for shared electric vehicles in the market, the universal endurance mileage is 40-60km, the charging is slow, and 4-6 hours are usually needed for one-time charging. The fuel cell is adopted as a power source of the electric vehicle, the endurance mileage is not lower than that of the existing solution and is very easy to expand, meanwhile, the hydrogenation only needs 4-6 minutes, and the use convenience is greatly improved.
When sharing the use to the hydrogen fuel electric motor car, need earlier carry out unblock control to the electronic lock, therefore control system need have the electric energy to provide always, and hydrogen energy electric motor car need start earlier and store up hydrogen device and just can provide the electric energy, prior art's hydrogen fuel cell pile management system passes through the fuel cell pile and gives lithium cell power supply system, give control system power supply through the lithium cell, then for the electronic lock unblock, after the unblock is successful, it provides the electric energy for hydrogen energy electric motor car to start to store up hydrogen device, the management problem of the lithium cell electric quantity does not actually solve in this system.
Disclosure of Invention
In order to overcome the technical defects, the invention aims to provide a management method and a system for further managing the power supply process of a hydrogen-fueled electric vehicle according to the electric quantity of a lithium battery, and the hydrogen-fueled electric vehicle.
The invention discloses a management method of a hydrogen fuel electric vehicle, wherein the hydrogen fuel electric vehicle is powered by a hydrogen fuel cell assembly and/or a lithium battery, and the management method comprises the following steps: acquiring the charge state of the lithium battery, and controlling the start and stop of the hydrogen fuel cell assembly according to the charge state; acquiring the load power of the hydrogen fuel electric vehicle, and setting the length of the drainage time interval of the hydrogen fuel cell assembly to be inversely proportional to the load power; acquiring the total water drainage times S of the hydrogen fuel cell assembly in one power supply period1The power supply period is the air supply time of one hydrogen cylinder; accumulating the current water discharge times S of the hydrogen fuel cell assembly2Calculating to obtain the current hydrogen allowance percentage of the power supply period as
Preferably, the obtaining of the load power of the hydrogen-fueled electric vehicle and the adjusting of the water discharge time interval of the hydrogen fuel cell assembly according to the load power comprises: acquiring real-time load power of the hydrogen fuel electric vehicle; if the current load power is larger than the preset load power, setting the drainage time interval as a first time interval; if the current load power is less than or equal to the preset load power, setting the drainage time interval as a second time interval; the first time interval is less than the second time interval.
Preferably, the acquiring the state of charge of the lithium battery and controlling the start and stop of the hydrogen fuel cell assembly according to the state of charge comprises: acquiring the real-time voltage of the lithium battery; when the current voltage of the lithium battery is lower than a first preset voltage, controlling the hydrogen fuel cell assembly to start to supply power; when the current voltage of the lithium battery is higher than a second preset voltage, controlling the hydrogen fuel cell assembly to stop supplying power; the first preset voltage is less than the second preset voltage.
Preferably, the controlling the hydrogen fuel cell assembly to start supplying power includes: controlling a hydrogen gas inlet valve of the hydrogen fuel cell assembly to open.
Preferably, the acquiring the state of charge of the lithium battery and controlling the start and stop of the hydrogen fuel cell assembly according to the state of charge further includes: adjusting the output power of the hydrogen fuel cell assembly according to the state of charge.
Preferably, the acquiring the state of charge of the lithium battery and controlling the start and stop of the hydrogen fuel cell assembly according to the state of charge further includes: if the electric quantity of the hydrogen fuel cell assembly is continuously higher than a first preset electric quantity value within a preset time period and the electric quantity of the lithium battery is continuously lower than a second preset electric quantity value, the hydrogen fuel cell assembly starts to charge the lithium battery; the first preset electric quantity value is higher than the second preset electric quantity value.
Preferably, if the electric quantity of the hydrogen fuel cell assembly is continuously higher than a first preset electric quantity value and the electric quantity of the lithium battery is continuously lower than a second preset electric quantity value within a preset time period, the starting of charging the lithium battery by the hydrogen fuel cell assembly includes: and when the fuel for supplying the hydrogen fuel cell assembly is consumed completely, or the hydrogen fuel cell assembly is in failure, or the electric quantity of the lithium battery is higher than a second preset electric quantity value, stopping charging the lithium battery by the hydrogen fuel cell assembly.
The invention also discloses a power supply management system of the hydrogen fuel electric vehicle, which comprises a hydrogen storage bottle, a hydrogen fuel cell component, a lithium battery and a control component, wherein the hydrogen fuel electric vehicle is powered by the hydrogen fuel cell component and/or the lithium battery; the hydrogen storage bottle, the hydrogen fuel cell component and the lithium battery are connected with the control component; the control assembly acquires the real-time voltage of the lithium battery; when the current voltage of the lithium battery is lower than a first preset voltage, controlling the hydrogen fuel cell assembly to start to supply power; when the current voltage of the lithium battery is higher than a second preset voltage, controlling the hydrogen fuel cell assembly to stop supplying power; the first preset voltage is smaller than the second preset voltage; the control component acquires real-time load power of the hydrogen fuel electric vehicle; if the current load power is larger than the preset load power, setting the drainage time interval as a first time interval; if the current load power is less than or equal to the preset load power, setting the drainage time interval as a second time interval; the first time interval is less than the second time interval; the control component acquires the total water drainage times S of the hydrogen fuel cell component in one power supply period1And accumulating the current water discharge times S of the hydrogen fuel cell assembly2Calculating to obtain the current hydrogen allowance percentage of a power supply period as
The power supply period is the air supply time of one hydrogen cylinder.
Preferably, the hydrogen fuel cell assembly comprises a hydrogen fuel cell stack, a fan, a water discharge solenoid valve and an air inlet valve; when the hydrogen fuel cell stack starts to supply power, the fan, the water discharge electromagnetic valve and the air inlet valve start to work; still include voltage detection module, voltage detection module with control assembly the lithium cell with the hydrogen fuel cell subassembly is connected, control assembly passes through voltage detection module acquires the real-time voltage of lithium cell.
The invention also discloses a hydrogen fuel electric vehicle which is powered by any one of the management methods; the electronic lock further comprises a driving module and a motor device which are connected, wherein the motor device comprises an electronic lock, and the driving module drives the motor device to operate so as to unlock the electronic lock.
After the technical scheme is adopted, compared with the prior art, the method has the following beneficial effects:
1.when the hydrogen fuel electric vehicle is started, the control assembly is powered by the lithium battery, so that the control assembly is started and a hydrogen fuel cell assembly; in addition, according toCapacity in hydrogen storage bottleThe situation determines whether a lithium battery needs to be used for supplying Electric, i.e. when saidIn hydrogen storage bottlesWhen the gas capacity is insufficient, the lithium battery is used for supplying power, so that the power supply in the running process of the vehicle is ensured Stabilizing;
2. adjusting the drainage time interval of the hydrogen fuel cell component according to the load power, wherein when the load power is higher, the power supply power of the default hydrogen fuel cell component is also higher, so that more water can be generated in a reaction manner, the drainage time interval is set to be shorter, and when the load power is lower, the drainage time interval is correspondingly lengthened;
3. estimating the current hydrogen residual quantity according to the ratio of the current actual drainage times to the total drainage times, so that a user can conveniently obtain hydrogen quantity information;
4. it is also provided that, in the case where the lithium battery is short of charge and the hydrogen fuel cell module is sufficiently charged, the lithium battery is charged by the hydrogen fuel cell module,ensuring the reliability of the hydrogen fuel electric vehicle during starting。
Drawings
FIG. 1 is a flow chart of the present invention for adjusting the drain interval based on load power;
FIG. 2 is a flow chart for obtaining the percentage of hydrogen remaining according to the number of times of water discharge according to the present invention;
FIG. 3 is a flow chart of controlling the start and stop of a hydrogen fuel cell assembly according to the state of charge of a lithium battery, provided by the present invention;
fig. 4 is a schematic structural diagram of the hydrogen fuel electric vehicle provided by the invention.
Detailed Description
The advantages of the invention are further illustrated in the following description of specific embodiments in conjunction with the accompanying drawings.
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in themselves. Thus, "module" and "component" may be used in a mixture.
The invention discloses a management method of a hydrogen fuel electric vehicle, wherein the hydrogen fuel electric vehicle is powered by a hydrogen fuel cell component and/or a lithium battery together, and the management method comprises the following steps:
the method comprises the steps of obtaining the charge state of a lithium battery, and controlling the start and stop of a hydrogen fuel cell assembly according to the charge state, wherein the power supply mode of the lithium battery is more stable than that of the hydrogen fuel cell assembly, so that whether the hydrogen fuel cell assembly needs to be started or not is determined according to the charge condition of the lithium battery, namely when the charge quantity of the lithium battery can meet the current driving requirement of a vehicle, the hydrogen fuel cell assembly does not need to be started, and the power supply stability in the driving process of the vehicle is ensured;
acquiring load power of a hydrogen fuel electric vehicle, setting the length of a drainage time interval of a hydrogen fuel cell assembly to be inversely proportional to the load power, and when the load power is higher, setting the drainage time interval to be shorter, and when the load power is lower, correspondingly lengthening the drainage time interval and reducing the workload of a drainage electromagnetic valve, wherein the supply power of the hydrogen fuel cell assembly is higher by default and more water can be generated in a reaction manner;
referring to fig. 1, the total water discharge times S of the hydrogen fuel cell assembly in one power supply cycle is obtained1One supply cycle being one hydrogen cylinderAir supply time; accumulating the current water discharge times S of the hydrogen fuel cell assembly2Calculating to obtain the current hydrogen allowance percentage of a power supply period as
The estimated residual amount of the hydrogen at present can be conveniently obtained by a user, the hydrogen cylinder can be replaced in time or the using mode of a vehicle can be changed, and a long-distance using plan is changed into a short-distance using plan.
Referring to fig. 2, specifically, the real-time load power of the hydrogen-fueled electric vehicle is obtained, and if the current load power is greater than the preset load power, the drainage time interval is set to be a first time interval, for example, 8 seconds; if the current load power is less than or equal to the preset load power, the drainage time interval is set to be a second time interval, for example, 38 seconds. The first time interval is smaller than the second time interval, the specific numerical value is not limited, and the setting is flexible according to actual requirements.
More preferably, the upper limit of the water discharge amount is generally lower for a hydrogen fuel cell assembly with lower power, i.e., the water discharge amount does not exceed a high value even if the power is maximum, so that the requirement can be met by setting two time intervals; for some special application scenarios, the power of the hydrogen fuel cell assembly is larger, the upper limit of the water discharge amount is also higher, at this time, two time intervals only correspond to the two upper and lower limit values respectively, and the middle value of the use power does not correspond to the time interval, so that a water discharge fault may be caused.
Even under the condition that the requirement on the water drainage precision is high, the water drainage process is very sensitive, and at the moment, the water drainage time interval can be specifically distributed according to the water yield and the capacity of the water storage component of the hydrogen fuel cell assembly by calculating the water yield corresponding to the specific power value. In short, the number of the drainage time intervals is not limited, and is flexibly adjusted according to the power of the hydrogen fuel cell assembly and the water storage capacity of the vehicle.
The acquisition of the real-time load power of the hydrogen-fueled electric vehicle is performed periodically, the acquisition time interval is also flexibly set, the interval time is set to be shorter if the sensitivity for acquiring information is required to be high, and the interval time can be set to be longer if the sensitivity for acquiring information is not required.
Preferably, the hydrogen fuel electric vehicle can detect the voltage of the lithium battery in the using process, and when the electric quantity of the lithium battery is detected to be insufficient, the fuel cell stack system is started.
Specifically, referring to fig. 3, the real-time voltage of the lithium battery is obtained, and when the current voltage of the lithium battery is lower than a first preset voltage, the current electric quantity of the lithium battery is over-low by default, and the hydrogen fuel cell assembly is controlled to start to supply power; and when the current voltage of the lithium battery is higher than a second preset voltage, the default current electric quantity of the lithium battery is sufficient, and the hydrogen fuel cell assembly is controlled to stop supplying power. The first preset voltage is smaller than the second preset voltage, the specific value is flexibly set according to actual requirements, and the setting is not limited here.
When the hydrogen fuel cell assembly starts to supply power, the hydrogen inlet valve of the hydrogen fuel cell assembly is controlled to be opened, so that oxygen in the hydrogen residual air reacts to generate electric energy. When the hydrogen fuel cell assembly starts to supply power, the water discharge electromagnetic valve and the fan are in a maneuvering state, usually, the water discharge electromagnetic valve is periodically opened according to a set water discharge time interval, and the water discharge times are accumulated after water is discharged once; and the fan is started along with the whole power supply process.
During the drainage process, the unreacted excessive gas is discharged along with the drainage process.
Preferably, after the state of charge of the lithium battery is obtained, the output power of the hydrogen fuel cell assembly is also adjusted according to the state of charge.
Preferably, the lithium battery can be charged by using the remaining electric energy of the hydrogen fuel cell assembly during the riding process, specifically, if the electric quantity of the hydrogen fuel cell assembly is continuously higher than the first preset electric quantity value and the electric quantity of the lithium battery is continuously lower than the second preset electric quantity value within a preset time period, the electric quantity of the hydrogen fuel cell assembly is considered to be sufficient and the electric quantity of the lithium battery is considered to be insufficient, and then the lithium battery is charged by using the hydrogen fuel cell assembly. Hydrogen fueled electricityA charging module is arranged between the battery assembly and the lithium battery, and the charging electric quantity is automatically distributed through the charging module. For example, the output power of the hydrogen fuel cell assembly is P, and auxiliary loads such as a fan and a heating device consume P1Tile, the riding process vehicle consumes P2W is in the residual stack (P-P)1-P2) The tiles are used to power the lithium battery.
It should be noted that, in order to set that the hydrogen fuel cell assembly is allowed to charge the lithium battery only when the electric quantity of the hydrogen fuel cell assembly is higher than the electric quantity of the lithium battery, the first preset electric quantity value is set to be higher than the second preset electric quantity value. In other embodiments, even if the electric quantity of the hydrogen fuel cell assembly is lower than the electric quantity of the lithium battery, in order to ensure that the electric quantity of the lithium battery is sufficient, the hydrogen fuel cell assembly is also allowed to charge the lithium battery, at this time, the first preset electric quantity value is not necessarily higher than the second preset electric quantity value, no association exists between the first preset electric quantity value and the second preset electric quantity value, and the first preset electric quantity value and the second preset electric quantity value are set independently according to.
Preferably, in order to ensure that the amount of electricity in the lithium battery satisfies a certain value, when the hydrogen fuel cell assembly is charging the lithium battery, the setting is: and when the fuel for supplying the hydrogen fuel cell assembly is consumed completely, or the hydrogen fuel cell assembly is in failure, or the electric quantity of the lithium battery is higher than a second preset electric quantity value, stopping charging the lithium battery by the hydrogen fuel cell assembly.
Referring to fig. 4, the present invention also discloses a power supply management system for hydrogen-fueled electric vehicles, comprising:
-a hydrogen storage bottle storing hydrogen for providing to the hydrogen fuel cell assembly, connected to the radio frequency identification module;
-a hydrogen fuel cell assembly for reacting oxygen in the air with hydrogen in the hydrogen storage cylinder to produce electrical energy;
-a lithium battery for providing an initial supply of electrical energy;
-a control component for detecting the start-up condition of the hydrogen fuel cell component, as well as the operating state and the state of charge of the lithium battery, and controlling the output power of the hydrogen fuel cell component in dependence on the state of charge of the lithium battery.
The hydrogen storage bottle, hydrogen fuel cell subassembly and lithium cell are connected with control assembly, the hydrogen fuel electric motor car supplies power through hydrogen fuel cell subassembly and/or lithium cell, the hydrogen fuel electric motor car is at the start-up stage, supply power through the lithium cell and make the processing unit circular telegram, the processing unit is opened hydrogen admission valve with hydrogen fuel cell subassembly, make hydrogen supply hydrogen for the fuel cell pile from the gas outlet of hydrogen storage device, hydrogen reacts with the oxygen in the air and produces the electric energy, electric vehicle uses hydrogen fuel to supply power this moment.
The control assembly acquires the real-time voltage of the lithium battery, and controls the hydrogen fuel cell assembly to start power supply when the current voltage of the lithium battery is lower than a first preset voltage; and when the current voltage of the lithium battery is higher than a second preset voltage, controlling the hydrogen fuel cell assembly to stop supplying power. The first preset voltage is smaller than the second preset voltage, so that the hydrogen fuel cell assembly is started to be used under the condition that the electric quantity of the lithium battery is insufficient, and the lithium battery is preferentially used for supplying power under the condition that the electric quantity of the lithium battery is sufficient.
The control assembly acquires real-time load power of the hydrogen fuel electric vehicle, and if the current load power is larger than the preset load power, the drainage time interval is set to be a first time interval; and if the current load power is less than or equal to the preset load power, setting the drainage time interval as a second time interval. The first time interval is less than the second time interval and water produced by the hydrogen fuel cell assembly is drained.
The control component acquires the total water drainage times S of the hydrogen fuel cell component in one power supply period1And accumulating the current water discharge times S of the hydrogen fuel cell assembly2Calculating the percentage of the current hydrogen remaining for a power supply cycle as
The user can know the hydrogen residual in the hydrogen storage bottle. It should be noted that, in general, one power supply cycle is the gas supply time of one hydrogen cylinder.
Preferably, the hydrogen fuel cell assembly comprises a hydrogen fuel cell stack, a fan, a water discharge electromagnetic valve and an air inlet valve, and when the hydrogen fuel cell stack starts to supply power, the fan, the water discharge electromagnetic valve and the air inlet valve are in a motorized working state.
The power supply management system further comprises a voltage detection module and a power supply management module, the voltage detection module is a voltage detection circuit and is connected with the control assembly, the lithium battery and the hydrogen fuel cell assembly, and the control assembly obtains the real-time voltage of the lithium battery through the voltage detection module. The power management module is connected with the lithium battery and the control assembly and is used for controlling the output power of the hydrogen fuel cell assembly.
Referring to fig. 4, the present invention further discloses a hydrogen fuel electric vehicle, which is powered by the above management method, and further comprises a driving module and a motor device connected with each other, wherein the motor device comprises an electronic lock, and the driving module is used for driving the motor device of the electric vehicle under the power supply of the hydrogen fuel cell assembly and/or the lithium battery, so as to open the electronic lock, and enable the vehicle to be in a usable state.
It should be noted that the embodiments of the present invention have been described in terms of preferred embodiments, and not by way of limitation, and that those skilled in the art can make modifications and variations of the embodiments described above without departing from the spirit of the invention.
Claims (10)
1. A management method for a hydrogen-fueled electric vehicle, wherein the hydrogen-fueled electric vehicle is powered by a hydrogen fuel cell assembly and/or a lithium battery, comprising:
acquiring the charge state of the lithium battery, and controlling the start and stop of the hydrogen fuel cell assembly according to the charge state;
acquiring the load power of the hydrogen fuel electric vehicle, and setting the length of the drainage time interval of the hydrogen fuel cell assembly to be inversely proportional to the load power;
acquiring the total water drainage times S of the hydrogen fuel cell assembly in one power supply period1One power supply cycle is the air supply time of one hydrogen cylinder(ii) a Accumulating the current water discharge times S of the hydrogen fuel cell assembly2Calculating to obtain the current hydrogen allowance percentage of the power supply period as
2. The method of claim 1, wherein said obtaining a load power of the hydrogen-fueled electric vehicle and adjusting a drain interval of the hydrogen fuel cell assembly based on the load power comprises:
acquiring real-time load power of the hydrogen fuel electric vehicle;
if the current load power is larger than the preset load power, setting the drainage time interval as a first time interval;
if the current load power is less than or equal to the preset load power, setting the drainage time interval as a second time interval;
the first time interval is less than the second time interval.
3. The management method according to claim 1, wherein the acquiring the state of charge of the lithium battery and controlling the start-stop of the hydrogen fuel cell assembly according to the state of charge comprises:
acquiring the real-time voltage of the lithium battery;
when the current voltage of the lithium battery is lower than a first preset voltage, controlling the hydrogen fuel cell assembly to start to supply power;
when the current voltage of the lithium battery is higher than a second preset voltage, controlling the hydrogen fuel cell assembly to stop supplying power;
the first preset voltage is less than the second preset voltage.
4. The management method according to claim 3, wherein the controlling the hydrogen fuel cell assembly to start supplying power includes:
controlling a hydrogen gas inlet valve of the hydrogen fuel cell assembly to open.
5. The management method according to claim 1, wherein the obtaining the state of charge of the lithium battery and controlling the start-stop of the hydrogen fuel cell assembly according to the state of charge further comprises:
adjusting the output power of the hydrogen fuel cell assembly according to the state of charge.
6. The management method according to claim 1, wherein the obtaining the state of charge of the lithium battery and controlling the start-stop of the hydrogen fuel cell assembly according to the state of charge further comprises:
if the electric quantity of the hydrogen fuel cell assembly is continuously higher than a first preset electric quantity value within a preset time period and the electric quantity of the lithium battery is continuously lower than a second preset electric quantity value, the hydrogen fuel cell assembly starts to charge the lithium battery;
the first preset electric quantity value is higher than the second preset electric quantity value.
7. The method of claim 6, wherein the step of starting charging the lithium battery by the hydrogen fuel cell assembly if the amount of electricity of the hydrogen fuel cell assembly is continuously higher than a first preset amount of electricity and the amount of electricity of the lithium battery is continuously lower than a second preset amount of electricity within a preset time period comprises:
and when the fuel for supplying the hydrogen fuel cell assembly is consumed completely, or the hydrogen fuel cell assembly is in failure, or the electric quantity of the lithium battery is higher than a second preset electric quantity value, stopping charging the lithium battery by the hydrogen fuel cell assembly.
8. The power supply management system of the hydrogen fuel electric vehicle is characterized by comprising a hydrogen storage bottle, a hydrogen fuel cell assembly, a lithium battery and a control assembly, wherein the hydrogen fuel electric vehicle is powered by the hydrogen fuel cell assembly and/or the lithium battery; the hydrogen storage bottle, the hydrogen fuel cell component and the lithium battery are connected with the control component;
the control assembly acquires the real-time voltage of the lithium battery; when the current voltage of the lithium battery is lower than a first preset voltage, controlling the hydrogen fuel cell assembly to start to supply power; when the current voltage of the lithium battery is higher than a second preset voltage, controlling the hydrogen fuel cell assembly to stop supplying power; the first preset voltage is smaller than the second preset voltage;
the control component acquires real-time load power of the hydrogen fuel electric vehicle; if the current load power is larger than the preset load power, setting the drainage time interval as a first time interval; if the current load power is less than or equal to the preset load power, setting the drainage time interval as a second time interval; the first time interval is less than the second time interval;
the control component acquires the total water drainage times S of the hydrogen fuel cell component in one power supply period1And accumulating the current water discharge times S of the hydrogen fuel cell assembly2Calculating to obtain the current hydrogen allowance percentage of a power supply period as
The power supply period is the air supply time of one hydrogen cylinder.
9. The power management system of claim 8, wherein the hydrogen fuel cell assembly comprises a hydrogen fuel cell stack, a fan, a drain solenoid valve, and an air inlet valve;
when the hydrogen fuel cell stack starts to supply power, the fan, the water discharge electromagnetic valve and the air inlet valve start to work;
still include voltage detection module, voltage detection module with control assembly the lithium cell with the hydrogen fuel cell subassembly is connected, control assembly passes through voltage detection module acquires the real-time voltage of lithium cell.
10. An electric vehicle powered by hydrogen fuel, characterized in that power is supplied by the management method of any one of the above 1 to 7;
the electronic lock further comprises a driving module and a motor device which are connected, wherein the motor device comprises an electronic lock, and the driving module drives the motor device to operate so as to unlock the electronic lock.
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| CN202110324208.9A CN113071375B (en) | 2021-03-26 | 2021-03-26 | Hydrogen fuel electric vehicle and management method and system thereof |
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| CN114889791A (en) * | 2022-04-02 | 2022-08-12 | 广东逸动科技有限公司 | Control method and system for extended range energy system and new energy ship |
| WO2022199658A1 (en) * | 2021-03-26 | 2022-09-29 | 永安行科技股份有限公司 | Hydrogen fuel electric vehicle, and management method and system for hydrogen fuel electric vehicle |
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| CN116093383B (en) * | 2023-04-11 | 2023-06-30 | 北京新研创能科技有限公司 | Air inlet control method and system for hydrogen fuel cell |
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