CN117429321B - Hydrogen energy vehicle control method, device and system - Google Patents
Hydrogen energy vehicle control method, device and system Download PDFInfo
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- CN117429321B CN117429321B CN202311763256.3A CN202311763256A CN117429321B CN 117429321 B CN117429321 B CN 117429321B CN 202311763256 A CN202311763256 A CN 202311763256A CN 117429321 B CN117429321 B CN 117429321B
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 30
- 239000001257 hydrogen Substances 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000000446 fuel Substances 0.000 claims abstract description 104
- 238000010926 purge Methods 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims description 46
- 230000007958 sleep Effects 0.000 claims description 18
- 230000005059 dormancy Effects 0.000 claims description 15
- 238000004590 computer program Methods 0.000 claims description 7
- 238000007710 freezing Methods 0.000 abstract description 6
- 230000008014 freezing Effects 0.000 abstract description 6
- 238000004321 preservation Methods 0.000 description 12
- 238000005265 energy consumption Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 238000009413 insulation Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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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
- B60L58/32—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells for controlling the temperature of fuel cells, e.g. by controlling the electric load
- B60L58/34—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells for controlling the temperature of fuel cells, e.g. by controlling the electric load by heating
-
- 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
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
-
- 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
- B60L58/31—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells for starting of fuel cells
-
- 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
- B60L58/40—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for controlling a combination of batteries and fuel cells
-
- 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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/545—Temperature
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Fuel Cell (AREA)
Abstract
The invention provides a control method, a device and a system of a hydrogen energy vehicle, wherein in the control method, a cloud server inquires the local highest air temperature t within the planned parking time period max Minimum air temperature t min And predicting the starting time air temperature T, and sending the predicted starting time air temperature T to the whole vehicle controller, wherein the whole vehicle controller compares a plurality of temperature values with a preset temperature T, and when T is as follows max When the temperature is less than T, the local air temperature is always in a low-temperature state in the planned parking time period, and the fuel cell is heated in a timing way in order to facilitate the driver to be able to use the vehicle again at any time in the planned parking time period; when t max When T is more than or equal to T, the local air temperature is raised and lowered within the planned parking time period and the highest temperature is above the freezing point, but the predicted starting time air temperature T is at a lower temperature, so that inconvenience is caused to starting the vehicle, the fuel cell is preheated before being started, and meanwhile, when T min When the temperature is less than T, the battery management unit controls the blower to purge, and ice is prevented, so that the cold start efficiency is improved.
Description
Technical Field
The present invention relates to the field of hybrid vehicles, and in particular, to a method, an apparatus, and a system for controlling a hydrogen energy vehicle.
Background
The current popular hydrogen energy vehicles generally refer to hybrid vehicles taking fuel cells and energy storage batteries as power sources, and along with popularization of the hydrogen energy vehicles, the service environment temperature range of the hydrogen energy vehicles is larger and larger, particularly in northern severe cold areas, water in the batteries is frozen to become a main factor for causing performance attenuation of the fuel cells, meanwhile, long-time low-temperature environment parking can cause too low temperature of the fuel cells, long starting time and even starting failure, and inconvenience is brought to drivers when the performance of the fuel cells is influenced.
Therefore, when the vehicle is parked in a low-temperature environment, the fuel cell can be insulated to improve the starting efficiency of the vehicle and protect the performance of the fuel cell, but the energy consumption is relatively high, for example, the fuel cell vehicle battery insulation control method, system and fuel cell vehicle disclosed in patent CN116714482a, when the vehicle is in a parking state, the temperature of the fuel cell and the temperature of the energy storage battery are monitored in real time to judge when to insulate the fuel cell and the energy storage battery, and the fuel cell is started to operate during the insulation, so that energy is required to be continuously consumed in the process.
In addition, when the heat preservation state of the battery is started, because of the large difference between the north and south temperatures in China and the different cooling time of the fuel battery, if the temperature of the fuel battery is not judged in real time, whether the heat preservation state is started or not cannot be judged, but the energy consumption is increased, and the flow is complicated.
Disclosure of Invention
The first object of the present invention is to provide a control method for a hydrogen energy vehicle, which aims to solve the problems of long starting time of the hydrogen energy vehicle in a low-temperature environment and high heat preservation energy consumption of a fuel cell.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a hydrogen energy vehicle control method comprising the steps of:
s1, a whole vehicle controller sends a whole vehicle shutdown signal, and a user input device obtains the planned parking time of a vehicle and sends the planned parking time to a cloud server;
s2, the positioning unit sends the information of the position of the vehicle to the cloud server, and the cloud server inquires the local highest air temperature t in the planned parking time period max Minimum air temperature t min The predicted starting moment air temperature t is sent to the whole vehicle controller;
s3, the whole vehicle controller outputs the highest air temperature t max The saidMinimum air temperature t min Comparing the predicted starting time air temperature T with a preset temperature T, and executing S4;
s4, judging the lowest air temperature t min If the temperature is smaller than the preset temperature T, the whole vehicle controller sends a purging instruction to a battery management unit, the battery management unit controls a blower to purge the fuel cell, and S5 is executed after purging is finished; if not, the whole vehicle controller enters a shutdown state;
s5, judging the highest air temperature t max If the temperature is less than the preset temperature T, the whole vehicle controller sends a command for entering into dormancy and heating the fuel cell at regular time to a battery management unit; if not, executing S6;
s6, judging whether the air temperature T at the predicted starting moment is smaller than the preset temperature T, and if so, sending a command of entering into dormancy and preheating the fuel cell to the battery management unit by the whole vehicle controller; if not, the whole vehicle controller enters a shutdown state.
Further, the step S5 further includes the steps of: s51, the whole vehicle controller judges whether the planned parking time is longer than the heatable time of the battery pack, and if so, the whole vehicle controller switches the instruction of entering into sleep and heating the fuel cell at regular time, which is sent to the battery management unit, into the instruction of entering into sleep and preheating the fuel cell.
Further, the preheating time in the dormant and preheating fuel cell command is 25 minutes before the planned stopping time period is stopped.
Further, after step S51, the steps further include:
s52, if the planned parking time is less than or equal to the heatable time of the battery pack, the whole vehicle controller judges the highest air temperature t max Whether the temperature is in a preset extremely cold region or not; if yes, executing S53; if not, executing S54;
s53, the whole vehicle controller sends an instruction for entering a first dormancy and heating the fuel cell at regular time to the battery management unit;
s54, the whole vehicle controller sends a command for entering a second dormancy and heating the fuel cell at regular time to the battery management unit.
Further, the heating interval duration in the first sleep and timing heating fuel cell command is less than the heating interval duration in the second sleep and timing heating fuel cell command.
Further, the step S3 further includes the steps of: s31, displaying the temperature change condition in the planned parking time by an in-vehicle display, and when t max And when the temperature is less than T, the display in the vehicle displays low-temperature early warning.
Further, the whole vehicle controller sends a whole vehicle shutdown signal to enter a to-be-shutdown state, and enters the shutdown state after the steps are executed.
The second object of the present invention is to provide a hydrogen energy vehicle control device, which aims to solve the problems that the starting time of a hydrogen energy vehicle in a low-temperature environment is too long and the heat preservation energy consumption of a fuel cell is too high.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a hydrogen energy vehicle control apparatus comprising a memory and a processor, the memory storing one or more computer programs for performing a hydrogen energy vehicle control method as described above when one or more of the computer programs are executed by the processor.
The third object of the present invention is to provide a control system for a hydrogen energy vehicle, which aims to solve the problems of long starting time of the hydrogen energy vehicle in a low-temperature environment and high heat preservation energy consumption of a fuel cell.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the hydrogen energy vehicle control system is used for executing the hydrogen energy vehicle control method, and comprises a whole vehicle controller, a user input device, a positioning unit, a cloud server, a battery management unit, a heating unit, a battery pack, a fuel cell, an in-vehicle display and a blower.
After the technical scheme is adopted, compared with the background technology, the invention has the following advantages:
1. inquiring local air in planned parking time through cloud serverThe temperature state, the whole vehicle controller is according to the highest temperature t max And the predicted starting time temperature t is used for adjusting the heating state, when t max When the temperature is less than T, the local air temperature is always in a low-temperature state in the planned parking time period, which causes trouble to restarting the vehicle, and the fuel cell is heated at regular time in order to facilitate the driver to be able to use the vehicle again at any time in the planned parking time period; when t max When T is more than or equal to T, the situation that the local air temperature is lifted in the planned parking time and the highest temperature is above the freezing point is indicated, and the thermal insulation state is not required to be started all the time, but the predicted starting time air temperature T is at a lower temperature, so that inconvenience is caused to the starting of the vehicle and the performance of the fuel cell is influenced, and therefore the preheating of the fuel cell before the starting is carried out, and the cold starting efficiency of the vehicle is improved.
2. Inquiring the local minimum temperature t in the planned parking time through a cloud server min When the lowest air temperature t min When being lower than the preset temperature, the explanation has the frozen condition of fuel cell, if there is residual moisture in the fuel cell, will freeze in the fuel cell inside, cover the catalysis layer surface, reduce electrochemical activity area, influence fuel cell performance, can lead to starting failure even, consequently, need battery management unit control air-blower to sweep, utilize the air current to take away the inside residual moisture of electric pile, prevent to lead to starting failure or start time overlength because of the inside a large amount of icing of fuel cell when starting next time, simultaneously, improve the water storage capacity of membrane electrode, thereby freeze time when prolonging the start, improve the success probability of fuel cell cold start.
3. Under the condition that the fuel cell needs to be insulated, judging whether the planned parking time is longer than the heatable time of the battery pack, if so, indicating that excessive energy is required to be consumed, if the fuel cell keeps insulated continuously, the SOC value of the battery pack is too low, and the reuse of the vehicle is affected, so that the battery management unit is switched to be in a dormant and preheated state, and the vehicle is convenient to restart while the energy consumption is saved.
4. Under the conditions that the fuel cell needs to be insulated and the planned parking time is not longer than the heatable time of the battery pack, judging the highest air temperature t max Whether the battery pack is in a preset extremely cold region or not, the cooling time of the battery pack is different due to different temperatures outside the vehicle, so that the battery pack is required to be cooled according to the highest air temperature t max If the heating frequency is intelligently adjusted in an extremely low temperature environment, the interval time of timing heat preservation needs to be shortened so as to achieve a better heat preservation effect, the residual electric quantity of the battery pack is reasonably utilized, and unnecessary energy consumption is reduced.
Drawings
FIG. 1 is a schematic flow chart of a method for controlling a hydrogen energy vehicle according to the present invention;
fig. 2 is a schematic structural diagram of a control system for a hydrogen energy vehicle according to the present invention.
Reference numerals illustrate:
1. a vehicle controller; 2. a battery management unit; 3. a user input device; 4. a positioning unit; 5. the cloud server; 6. a fuel cell; 7. a blower; 8. a heating unit; 9. an in-vehicle display; 10. and a battery pack.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In addition, it should be noted that: the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and to simplify the description, and do not denote or imply that the apparatus or elements of the present invention must have a particular orientation, and thus should not be construed as limiting the invention.
When an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the invention will be understood by those skilled in the art according to the specific circumstances.
Example 1
Referring to fig. 1 and 2, the present embodiment provides a method for controlling a hydrogen energy vehicle, which includes the following steps:
s1, a whole vehicle controller 1 sends a whole vehicle shutdown signal, a user input device 3 obtains a planned parking time length and sends the planned parking time length to a cloud server 5, and specifically, the planned parking time length is defined by a driver.
S2, the positioning unit 4 sends the information of the position of the vehicle to the cloud server 5, and the cloud server 5 inquires the local highest air temperature t in the planned parking time period max Minimum air temperature t min And the predicted starting time air temperature t is the air temperature within 1h before and after the completion of the planned parking time period, and is sent to the vehicle controller 1, specifically, in this embodiment, the weather condition data may be collected from a weather station, a news station, other vehicles on site as crowd-sourced weather condition data, a remotely connected temperature sensor, a connected mobile device database table, or may be collected in some other manner.
S3, the whole vehicle controller 1 outputs the highest air temperature t max Minimum air temperature t min Comparing the predicted starting time air temperature T with a preset temperature T, and executing S4, wherein the preset temperature T is 0 ℃ in the embodiment;
s4, judging the lowest air temperature t min Whether the temperature is smaller than the preset temperature T or not, if yes, the whole vehicle controller 1 sends a purging instruction to the battery management unit 2, and the battery management unit 2 controls the blower 7 to purge the fuel cell; s5, executing after purging is finished; if not, the whole vehicle controller entersEntering a closing state; specifically, the cloud server 5 is used for inquiring the local minimum air temperature t in the planned parking time period min When the lowest air temperature tmin When the temperature is lower than the preset temperature, the situation that the fuel cell 6 is frozen is indicated, if residual moisture exists in the fuel cell 6, the fuel cell 6 is frozen, the surface of the catalytic layer is covered, the electrochemical activity area is reduced, the performance of the fuel cell 6 is affected, and even the starting failure is caused, therefore, the battery management unit 2 is required to control the blower 7 to purge (the purging time can be set to be 5-10 min), the residual moisture in the electric pile is taken away by utilizing air flow, the starting failure of the fuel cell 6 caused by a large amount of freezing in the battery in the next starting is prevented, meanwhile, the water storage capacity of the membrane electrode is improved, the freezing time in the starting is prolonged, and the success probability of cold starting of the fuel cell 6 is improved.
S5, judging the highest air temperature t max If the temperature is less than the preset temperature T, the whole vehicle controller 1 sends a command for entering into dormancy and heating the fuel cell at regular time to the battery management unit 2; if not, executing S6; i.e. the local maximum air temperature t in the planned parking time period max When the temperature is lower than 0 ℃, the local air temperature is always in a low-temperature state in the planned parking time period, the fuel cell 6 is always in an icing state, trouble is caused to restarting the vehicle, and the fuel cell 6 is heated in a timed manner (the heating temperature is the temperature which enables the fuel cell 6 to be higher than the preset temperature T) in order to facilitate the driver to be able to use the vehicle again at any time in the planned parking time period;
s6, judging whether the air temperature T at the predicted starting moment is smaller than the preset temperature T, if so, sending a command of going to sleep and preheating the fuel cell to the battery management unit 2 by the whole vehicle controller 1; if not, the whole vehicle controller enters a shutdown state; i.e. the local maximum air temperature t in the planned parking time period max When the temperature t is not lower than 0 ℃ and the predicted starting time is lower than 0 ℃, the condition that the local temperature is raised and lowered within the planned stopping time and the highest temperature is above the freezing point is indicated, and the thermal insulation state is not required to be started all the time, but the predicted starting time is lower in temperature, so that the inconvenience is caused to the starting of the vehicle and the performance of the fuel cell 6 is influenced, and the fuel cell is powered onThe cell 6 is preheated before start-up (heating temperature is such that the fuel cell 6 is greater than the preset temperature T).
In addition, it should be noted that step S4 must be performed before step S5 and step S6, for example, when t min < T and T max If the temperature is more than or equal to T and is more than T, if the blower 7 is used for blowing, residual moisture in the fuel cell 6 can be removed, icing in the fuel cell 6 is reduced, the efficiency and the success rate of cold start are improved in an auxiliary manner, and the trouble of overlong cold start time is caused; if only the fuel cell 6 is preheated, residual moisture in the fuel cell 6 is frozen before preheating, which damages the performance of the fuel cell 6 and affects the service life thereof. Therefore, the vehicle controller 1 controls the blower 7 to purge and also transmits a command to the battery management unit 2 to go to sleep and preheat the fuel cell or a command to sleep and heat the fuel cell periodically.
Further, as shown in fig. 1, in step S5, the steps further include:
s51, the whole vehicle controller 1 judges whether the planned parking time is longer than the heatable time of the battery pack 10, if so, the whole vehicle controller 1 switches the instruction of entering into sleep and heating the fuel cell at regular time sent to the battery management unit 2 into the instruction of entering into sleep and preheating the fuel cell, specifically, the heatable time of the battery pack 10 is determined according to the time that the battery pack 10 can be heated when consuming 60% of the SOC value, and also can reasonably calibrate according to the capacity of the battery pack 10, wherein the heating frequency is calculated according to the heating frequency required by the minimum temperature, in other words, after the battery pack 10 is continuously heated and kept warm in the planned parking time, the residual SOC value of the battery pack 10 is more than 40%, and the residual electric quantity of the battery pack 10 is not too low, so that the user can conveniently use the vehicle again, and if the planned parking time is too long, the fuel cell 6 can be preheated.
Meanwhile, two different heating modes are specifically aimed at different vehicle conditions, if the planned parking time is longer, it is indicated that a driver has no vehicle requirement in a short period of time due to non-unexpected conditions, and the vehicle can be heated before being used again; if the planned parking time is shorter, the driver is required to use the vehicle in a short period, and the vehicle frequency is higher, so that the vehicle is set to be in a state of continuous interval heating and heat preservation, and the driver can use the vehicle again conveniently.
Further, the preheating time in the sleep and preheating fuel cell command is 25 minutes before the time of using again, that is, the preheating of the fuel cell 6 is started 25 minutes before the planned stop time is about to be cut off.
As shown in fig. 1, after step S51, the steps further include:
s52, if the planned parking time is less than or equal to the heatable time of the battery pack 10, the whole vehicle controller 1 judges the highest air temperature t max Whether the temperature is in the preset extremely cold region or not, if so, executing S53; if not, executing S54; specifically, in this embodiment, the preset extremely cold region is the temperature lower than-15 ℃;
s53, the whole vehicle controller 1 sends a command for entering the first sleep state and heating the fuel cell at regular time to the battery management unit 2, specifically, in the embodiment, when t max When the temperature is lower than minus 15 ℃, the whole vehicle controller 1 sends an instruction for entering a first dormancy and heating the fuel cell at fixed time to the battery management unit 2, and the battery management unit 2 self-wakes up and controls the heating unit 8 to heat the fuel cell 6 every 1 hour under the first dormancy and self-wake-up state at fixed time;
s54. the whole vehicle controller 1 sends a command to the battery management unit 2 to go to the second sleep and heat the fuel cell at a fixed time, specifically, in this embodiment, when t max When the temperature is greater than or equal to minus 15 ℃, the whole vehicle controller 1 sends an instruction for entering a second dormancy and heating the fuel cell at regular time to the battery management unit 2, and the battery management unit 2 self-wakes up every 2 hours and controls the heating unit 8 to heat the fuel cell 6 in the second dormancy and self-wake-up state at regular time.
In addition, the heating interval duration in the first sleep and timing heating fuel cell command is smaller than the interval duration in the second sleep and timing heating fuel cell command, specifically, in the case that the fuel cell 6 needs to be warmed and the planned stop time duration is not longer than the heatable time duration of the battery pack 10, the highest air temperature t is determined max Whether or not in the preset extremely cold region, the cooling time of the fuel cell 6 is different depending on the temperature of the outside environment of the vehicle, and therefore, it is necessary to respond to the highest gasTemperature t max If the heating frequency is intelligently adjusted and the temperature is extremely low, the interval time of timing heat preservation needs to be shortened so as to achieve better heat preservation effect, the residual electric quantity of the battery pack 10 is reasonably utilized, and unnecessary energy consumption is reduced.
Further, the step S3 further includes the steps of:
s31, displaying the temperature change condition in the planned parking time by the in-vehicle display 9, when t max When the temperature is less than T, the in-vehicle display 9 displays low-temperature early warning, namely, after a driver inputs a planned parking time, the cloud server 5 acquires weather change conditions in the time and feeds the weather change conditions back to the whole vehicle controller 1, and the weather change conditions are fed back to the driver through the in-vehicle display 9, wherein the temperature change conditions can be fed back through visual images, such as a graph; if the temperature is too low, a low-temperature prompt is sent out, wherein the low-temperature prompt can be set as a voice prompt, and the travel time can be reasonably selected by a driver according to the temperature change condition through a relatively displayed image prompt, meanwhile, the planned parking time can be also selected to be reset, and correspondingly, if the driver selects to reset the planned parking time, the data in the executing step are correspondingly changed.
Further, the whole vehicle controller 1 sends a whole vehicle shutdown signal to enter a to-be-shutdown state, and enters the shutdown state after the steps are executed. In the present embodiment, if the maximum air temperature t is max Predicted start-up time air temperature t and minimum air temperature t min None of the above conditions is satisfied, e.g. t min When the temperature is more than T, the weather temperature is always above 0 ℃, the vehicle is free from the trouble of cold start, corresponding steps are not required to be executed, and the whole vehicle controller 1 is shut down.
Example two
The invention also discloses a hydrogen energy vehicle control device, which comprises a memory and a processor, wherein the memory stores one or more computer programs, and the computer programs are used for executing the hydrogen energy vehicle control method according to the first embodiment when the computer programs are executed by the processor.
For the device embodiments, reference is made to the description of the method embodiments for the relevant points, since they essentially correspond to the method embodiments. The apparatus embodiments described above are merely illustrative, in which the modules illustrated as separate components may or may not be physically separate, and the components shown as modules may or may not be physical, i.e., may be located in one place, or may be distributed over a plurality of modules. Some or all of the modules may be selected according to actual needs to achieve the objectives of the disclosed solution. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
Example III
Referring to fig. 1 and 2, the present embodiment provides a hydrogen energy vehicle control system for executing the hydrogen energy vehicle control method in the first embodiment, which includes a vehicle controller 1, a user input device 3, a positioning unit 4, a cloud server 5, a battery management unit 2, a heating unit 8, a fuel cell 6, an in-vehicle display 9, and a blower 7.
Specifically, the whole vehicle controller 1 communicates with the battery management unit 2, the cloud server 5, and the positioning unit 4, the user input device 3 and the in-vehicle display 9 are connected with the whole vehicle controller 1, the battery management unit 2 is connected with the battery pack 10 and the heating unit 8 and controls the operation of the heating unit 8, and the battery management unit 2 is connected with the blower 7 and controls the purging thereof.
Further, after the whole vehicle controller 1 sends a shutdown signal, the cloud server 5 receives the data information sent by the positioning unit 4, inquires about the local weather condition, extracts and sends the required data to the whole vehicle controller 1, and the whole vehicle controller 1 outputs the highest air temperature t max And comparing the predicted starting time air temperature T with a preset temperature T, and according to the highest air temperature T max And the predicted starting time temperature t is used for adjusting the heating state, when t max When the temperature is less than T, the local air temperature is always in a low-temperature state in the planned parking time period, the trouble is caused to restarting the vehicle, the whole vehicle controller 1 sends a command of going to sleep and heating the fuel cell at regular time to the battery management unit 2 in order to facilitate the driver to be able to use the vehicle again at any time in the planned parking time period, and the fuel cell 6 is added at regular timeHeat; when t max When the temperature is more than or equal to T and is more than T, the temperature is raised and lowered within the planned parking time period, the highest temperature is above the freezing point, and the thermal insulation state is not required to be started all the time, but the temperature T at the expected starting time is lower, so that inconvenience is caused to the starting of the vehicle and the performance of the fuel cell 6 is influenced, the whole vehicle controller 1 sends a command of dormancy and preheating the fuel cell to the cell management unit 2, and the preheating of the fuel cell 6 is performed before the starting, wherein the heating is performed by controlling the heating unit 8 through the cell management unit 2.
Further, the cloud server 5 is used for inquiring the local minimum air temperature t in the planned parking time period min When t min When < T, it indicates that there is icing condition of the fuel cell 6, if residual moisture exists in the fuel cell 6, the residual moisture will freeze inside the fuel cell 6, and cover the surface of the catalytic layer, so as to reduce electrochemical activity area, affect performance of the fuel cell 6, and even cause start failure, therefore, the battery management unit 2 is required to control the blower 7 to purge, take away residual moisture inside the electric pile by using air flow, prevent the start failure of the fuel cell 6 caused by a large amount of icing inside the battery when starting next time, and simultaneously improve water storage capacity of the membrane electrode, thereby prolonging icing time when starting, and improving success probability of cold start of the fuel cell 6.
Further, in the case where the fuel cell 6 needs to be warmed and the planned stop time period is not longer than the heatable time period of the battery pack 10, the vehicle control unit 1 determines the maximum air temperature t max Whether or not in the preset extremely cold region, the cooling time of the fuel cell 6 is different depending on the temperature of the outside environment of the vehicle, and therefore, it is necessary to adjust to the maximum air temperature t max If the heating frequency is intelligently adjusted and the temperature is extremely low, the interval time of timing heat preservation needs to be shortened so as to achieve better heat preservation effect, the residual electric quantity of the battery pack 10 is reasonably utilized, and unnecessary energy consumption is reduced.
In this embodiment, the weather condition data may be collected from a weather station, a news station, from other vehicles in the field as crowd sourced weather condition data, a remotely connected temperature sensor, a connected mobile device database table, or may be collected in some other manner.
In this embodiment, the system further includes electronic devices, such as a processor, a communication bus, a user interface, a network interface, a memory, and the like. Wherein the communication bus is used for realizing connection communication between the components. The user interface may include a display screen, an input unit, and the user interface and the network interface may include a wired interface or a wireless interface, and the memory may be a high-speed random access memory or a stable nonvolatile memory.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (6)
1. The hydrogen energy vehicle control method is characterized in that: the method comprises the following steps:
s1, a whole vehicle controller sends a whole vehicle shutdown signal, and a user input device obtains the planned parking time of a vehicle and sends the planned parking time to a cloud server;
s2, the positioning unit sends the information of the position of the vehicle to the cloud server, and the cloud server inquires the local highest air temperature t in the planned parking time period max Minimum air temperature t min The predicted starting moment air temperature t is sent to the whole vehicle controller;
s3, the whole vehicle controller outputs the highest air temperature t max Said minimum air temperature t min Comparing the predicted starting time air temperature T with a preset temperature T, and executing S4;
s4, judging the lowest air temperature t min If the temperature is smaller than the preset temperature T, the whole vehicle controller sends a purging instruction to a battery management unit, and the battery management unit controls a blower to purge the fuel cell; s5, executing after purging is finished; if not, the whole vehicle controller enters a shutdown state;
s5, judging the highest air temperature t max If the temperature is less than the preset temperature T, the whole vehicle controller sends a command for entering sleep and heating the fuel cell at regular time to a battery management unit, and S51 is executed; if not, executing S6;
s51, the whole vehicle controller judges whether the planned parking time is longer than the heatable time of the battery pack, if so, the whole vehicle controller switches a command of entering into sleep and heating the fuel cell at regular time, which is sent to the battery management unit, into a command of entering into sleep and preheating the fuel cell; if not, executing S52;
s52, the whole vehicle controller judges the highest air temperature t max Whether the temperature is in a preset extremely cold region or not; if yes, executing S53; if not, executing S54;
s53, the whole vehicle controller sends an instruction for entering a first dormancy and heating the fuel cell at regular time to the battery management unit;
s54, the whole vehicle controller sends a command for entering a second dormancy and heating the fuel cell at regular time to the battery management unit, wherein the heating interval duration in the command for first dormancy and heating the fuel cell at regular time is smaller than the heating interval duration in the command for second dormancy and heating the fuel cell at regular time;
s6, judging whether the air temperature T at the predicted starting moment is smaller than the preset temperature T, and if so, sending a command of entering into dormancy and preheating the fuel cell to the battery management unit by the whole vehicle controller; if not, the whole vehicle controller enters a shutdown state.
2. The hydrogen-powered vehicle control method according to claim 1, characterized in that: and preheating time in the dormant and preheated fuel cell instruction is 25 minutes before the planned stopping time period is stopped.
3. The hydrogen-powered vehicle control method according to claim 1, characterized by further comprising the step of, in step S3:
s31, displaying the temperature change condition in the planned parking time by an in-vehicle display, and when t max When less than T, the vehicle is inThe display displays the low-temperature early warning.
4. The hydrogen-powered vehicle control method according to claim 1, characterized in that: the whole vehicle controller sends a whole vehicle shutdown signal to enter a to-be-shutdown state, and enters the shutdown state after the steps are executed.
5. The hydrogen energy vehicle control device is characterized in that: comprising a memory and a processor, said memory storing one or more computer programs for performing the hydrogen energy vehicle control method according to any one of claims 1 to 4 when one or more of said computer programs are executed by said processor.
6. The hydrogen energy vehicle control system is characterized in that: the hydrogen energy vehicle control method according to any one of claims 1 to 4, comprising a vehicle controller, a user input device, a positioning unit, a cloud server, a battery management unit, a heating unit, a battery pack, a fuel cell, an in-vehicle display and a blower.
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