CN114619870A - Grid control method, device, equipment and medium - Google Patents
Grid control method, device, equipment and medium Download PDFInfo
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- CN114619870A CN114619870A CN202210267620.6A CN202210267620A CN114619870A CN 114619870 A CN114619870 A CN 114619870A CN 202210267620 A CN202210267620 A CN 202210267620A CN 114619870 A CN114619870 A CN 114619870A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/08—Air inlets for cooling; Shutters or blinds therefor
- B60K11/085—Air inlets for cooling; Shutters or blinds therefor with adjustable shutters or blinds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
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Abstract
The invention discloses a method, a device, equipment and a medium for controlling a grating, wherein the method comprises the following steps: when a whole vehicle key starting signal of the fuel cell vehicle is detected, acquiring the hydrogen concentration of a first front cabin of the fuel cell vehicle; when the hydrogen concentration of the first front cabin is smaller than a first preset hydrogen concentration, controlling a target grid of the fuel cell automobile to be converted from an open state to a closed state, and acquiring a target refrigerant temperature of a target radiator corresponding to the target grid; and when the temperature of the target refrigerant is greater than the preset temperature threshold value, controlling the target grating to be converted from a closed state to an open state, and determining the opening angle of the target grating according to the temperature of the target refrigerant. The invention monitors the temperature of the target refrigerant, determines the opening angle of the target grid according to the temperature of the target refrigerant, and further reduces the opening angle of the target grid as much as possible while meeting the heat dissipation of the pile, thereby reducing the wind resistance of the whole vehicle as much as possible and improving the economy of the fuel cell vehicle.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a grille control method, a grille control device, grille control equipment and grille control media.
Background
A fuel cell vehicle is a vehicle using electric power generated by an on-vehicle fuel cell device as power.
Compared with a pure electric vehicle (a vehicle charged and discharged through a storage battery) and a traditional fuel vehicle, the fuel cell system of the fuel cell vehicle has a large heat dissipation requirement, and the heat dissipation capacity can be improved by increasing the area of the active air inlet grille. However, the increase of the area of the active air inlet grille can cause larger wind resistance when the whole vehicle runs, and the economical efficiency of the whole vehicle is reduced.
Disclosure of Invention
The embodiment of the application provides a grille control method, a grille control device, grille control equipment and grille control media, solves the technical problem that the wind resistance of a whole vehicle during driving cannot be reduced while the heat dissipation of an active air inlet grille is guaranteed in the prior art, and achieves the technical effect that the wind resistance of the whole vehicle during driving is reduced while the heat dissipation of the active air inlet grille is guaranteed.
In a first aspect, the present application provides a grille control method, including:
when a whole vehicle key starting signal of the fuel cell vehicle is detected, acquiring the hydrogen concentration of a first front cabin of the fuel cell vehicle;
when the hydrogen concentration of the first front cabin is smaller than a first preset hydrogen concentration, controlling a target grid of the fuel cell automobile to be converted from an open state to a closed state, and acquiring a target refrigerant temperature of a target radiator corresponding to the target grid;
and when the temperature of the target refrigerant is greater than the preset temperature threshold value, controlling the target grating to be converted from a closed state to an open state, and determining the opening angle of the target grating according to the temperature of the target refrigerant.
Further, when the target grid is a first grid corresponding to a fuel cell stack of a fuel cell automobile, the method further includes:
acquiring the pressure of an air conditioning loop of a fuel cell vehicle;
and when the temperature of the target refrigerant is greater than a preset temperature threshold value or the pressure of the air-conditioning loop is greater than a preset pressure threshold value, controlling the target grille to be switched from a closed state to an open state, and determining the opening angle of the target grille according to the temperature of the target refrigerant.
Further, when the target grille is the first grille, in controlling the target grille to be switched from the closed state to the open state, the method further includes:
updating the target refrigerant temperature and the air-conditioning loop pressure;
when the updated target refrigerant temperature is within a preset temperature range or the updated air-conditioning loop pressure is within a preset pressure range, controlling the blades of the target grille to keep the current angle; the preset temperature range is a temperature range which is greater than or equal to a first target temperature and less than or equal to a second target temperature, and the first target temperature is less than the second target temperature; the preset pressure range is a pressure range which is greater than or equal to a first target pressure and less than or equal to a second target pressure, and the first target pressure is less than the second target pressure;
when the updated target refrigerant temperature is lower than a first target temperature or the updated air-conditioning loop pressure is lower than a first target pressure, controlling the blades of the target grille to reduce the opening angle until the target refrigerant temperature is within a preset temperature range and the air-conditioning loop pressure is within a preset pressure range;
and when the target refrigerant temperature is higher than the second target temperature or the air-conditioning loop pressure is higher than the second target pressure, controlling the blades of the target grille to increase the opening angle until the target refrigerant temperature is within a preset temperature range and the air-conditioning loop pressure is within a preset pressure range.
Further, when the target refrigerant temperature is less than or equal to the preset temperature threshold and the air-conditioning loop pressure is less than or equal to the preset pressure threshold, the method further comprises:
the control target grille is kept in a closed state.
Further, in the process of switching the control target grille from the closed state to the open state, the method further includes:
updating the target refrigerant temperature;
when the updated target refrigerant temperature is within the pre-running temperature range, controlling the blades of the target grating to keep the current angle; the pre-running temperature range refers to a temperature range which is greater than or equal to a third target temperature and less than or equal to a fourth target temperature, and the third target temperature is less than the fourth target temperature;
when the updated target refrigerant temperature is lower than a third target temperature, controlling the blades of the target grille to reduce the opening angle until the target refrigerant temperature is within a pre-trip temperature range;
and when the target refrigerant temperature is higher than the fourth target temperature, controlling the blades of the target grille to increase the opening angle until the target refrigerant temperature is within the pre-running temperature range.
Further, the method further comprises:
when a whole vehicle key closing signal of the fuel cell vehicle is detected, acquiring the hydrogen concentration of a second front cabin of the fuel cell vehicle;
when the hydrogen concentration of the second front cabin is smaller than a second preset hydrogen concentration, controlling the target grille to be opened and keeping the target grille in an opened state;
and when the hydrogen concentration of the second front cabin is greater than or equal to the second preset hydrogen concentration, controlling the fuel cell automobile to send alarm information.
Further, the controlling the target grille to be switched from the closed state to the open state includes:
and controlling the blades of the target grille to rotate according to a preset rotating angular speed, so that the target grille is converted from a closed state to an open state.
In a second aspect, the present application provides a grill control apparatus comprising:
the first front cabin hydrogen concentration acquisition module is used for acquiring the first front cabin hydrogen concentration of the fuel cell automobile when a whole automobile key starting signal of the fuel cell automobile is detected;
the first control module is used for controlling a target grid of the fuel cell automobile to be converted from an open state to a closed state when the hydrogen concentration of the first front cabin is smaller than a first preset hydrogen concentration, and acquiring the target refrigerant temperature of a target radiator corresponding to the target grid;
and the second control module is used for controlling the target grating to be switched from a closed state to an open state when the temperature of the target refrigerant is greater than a preset temperature threshold value, and the opening angle of the target grating is determined according to the temperature of the target refrigerant.
In a third aspect, the present application provides an electronic device, comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to execute to implement a grid control method as provided in the first aspect.
In a fourth aspect, the present application provides a non-transitory computer-readable storage medium, wherein instructions in the storage medium, when executed by a processor of an electronic device, enable the electronic device to perform implementing a grid control method as provided in the first aspect.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
this application detects earlier whether front deck hydrogen concentration is less than first predetermined hydrogen concentration when the vehicle starts, can judge whether the vehicle is in hydrogen leakage state, can avoid fuel cell car to start under hydrogen leakage's state, and then reduces the emergence probability of incident. Further, when the fuel cell automobile does not generate hydrogen leakage, the control target grid is switched from the open state to the closed state so as to increase the temperature of the refrigerant more quickly and facilitate the quick start of the vehicle. And the target refrigerant temperature is monitored, and the opening angle of the target grid is determined according to the target refrigerant temperature, so that the opening angle of the target grid can be reduced as far as possible while the heat dissipation of the pile is met, the wind resistance of the whole vehicle is reduced as far as possible, and the economy of the fuel cell vehicle is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a grid control method provided in the present application;
fig. 2 is a schematic structural diagram of a heat dissipation system of a fuel cell stack according to the present disclosure;
fig. 3 is a schematic flow chart of a grid control method provided in the present application;
FIG. 4 is a schematic flow chart of another grid control method provided herein;
FIG. 5 is a schematic structural diagram of a grille control device provided in the present application;
fig. 6 is a schematic structural diagram of an electronic device provided in the present application.
Reference numerals:
1-grid, 2-grid, 3-grid, 4-radiator, 5-radiator, 6-radiator, 7-condenser, 8-fuel cell stack, 40-cooling fan, 50-cooling fan, and 60-cooling fan.
Detailed Description
The embodiment of the application provides a grille control method, a grille control device, grille control equipment and a grille control medium, and solves the technical problem that in the prior art, the wind resistance of a whole vehicle during driving cannot be reduced while the heat dissipation of an active air inlet grille is guaranteed.
In order to solve the technical problems, the general idea of the embodiment of the application is as follows:
a method of grille control, the method comprising: when a whole vehicle key starting signal of the fuel cell vehicle is detected, acquiring the hydrogen concentration of a first front cabin of the fuel cell vehicle; when the hydrogen concentration of the first front cabin is smaller than a first preset hydrogen concentration, controlling a target grid of the fuel cell automobile to be converted from an open state to a closed state, and acquiring a target refrigerant temperature of a target radiator corresponding to the target grid; and when the temperature of the target refrigerant is greater than the preset temperature threshold value, controlling the target grating to be converted from a closed state to an open state, and determining the opening angle of the target grating according to the temperature of the target refrigerant.
Whether the hydrogen concentration of the front cabin is smaller than the first preset hydrogen concentration or not is detected firstly when the vehicle is started, whether the vehicle is in a hydrogen leakage state or not can be judged, the fuel cell automobile can be prevented from being started in the hydrogen leakage state, and the occurrence probability of safety accidents is further reduced. Further, when the fuel cell vehicle does not generate hydrogen leakage, the control target grid is switched from the open state to the closed state to increase the temperature of the refrigerant more quickly, so that the vehicle can be started quickly. And the target refrigerant temperature is monitored, and the opening angle of the target grid is determined according to the target refrigerant temperature, so that the opening angle of the target grid can be reduced as far as possible while the heat dissipation of the pile is met, the wind resistance of the whole vehicle is reduced as far as possible, and the economy of the fuel cell vehicle is improved.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
First, it is stated that the term "and/or" appearing herein is merely one type of associative relationship that describes an associated object, meaning that three types of relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The present embodiment provides a grid control method as shown in fig. 1, applied to a controller of a fuel cell system, the method including steps S11-S13.
Step S11, when a key starting signal of the whole fuel cell vehicle is detected, acquiring the hydrogen concentration of a first front cabin of the fuel cell vehicle;
step S12, when the hydrogen concentration of the first front cabin is smaller than a first preset hydrogen concentration, controlling a target grid of the fuel cell automobile to be converted from an open state to a closed state, and acquiring a target refrigerant temperature of a target radiator corresponding to the target grid;
and step S13, when the target refrigerant temperature is greater than the preset temperature threshold, controlling the target grille to be switched from the closed state to the open state, and determining the opening angle of the target grille according to the target refrigerant temperature.
With regard to step S11, a first front cabin hydrogen concentration of the fuel cell vehicle is acquired when a full vehicle key start signal of the fuel cell vehicle is detected.
Fuel hydrogen of a fuel cell vehicle (e.g., a hydrogen fuel cell vehicle) may leak compared to a conventional electric vehicle and a fuel vehicle, and thus there is a safety problem. Therefore, it is necessary to detect and determine the hydrogen concentration of the fuel cell vehicle before the fuel cell vehicle is started. For example, when hydrogen gas leaks, the engine front compartment of the fuel cell vehicle is liable to collect the leaked hydrogen gas, and therefore, the first front compartment hydrogen concentration of the fuel cell vehicle can be detected by the front compartment hydrogen concentration sensor.
And judging whether the hydrogen concentration of the first front cabin is less than a first preset hydrogen concentration, wherein the first preset hydrogen concentration can be set according to specific conditions.
When the hydrogen concentration of the first front cabin is greater than or equal to the first preset hydrogen concentration, the hydrogen leakage is generated, and if the automobile is continuously started at the moment, safety accidents are easy to happen, so that the continuous starting of the automobile needs to be stopped, and an alarm prompt is sent out to reduce the possibility of hydrogen explosion.
When the first front cabin hydrogen concentration is less than the first preset hydrogen concentration, which means that the vehicle has not leaked hydrogen, the vehicle may be continuously started, and then the operation continues to step S12.
Regarding step S12, when the first front cabin hydrogen concentration is less than the first preset hydrogen concentration, the target grille of the fuel cell vehicle is controlled to be switched from the open state to the closed state, and the target refrigerant temperature of the target radiator corresponding to the target grille is obtained.
The embodiment takes the grille and the front cabin system components shown in fig. 2 as an example, and the solution provided by the embodiment is explained.
In fig. 2, there are included grids 1, 2, 3, radiators 4, 5, 6, cooling fans 40, 50, 60, a condenser 7, and a fuel cell stack 8. The fuel cell stack 8 belongs to a heat generating source, and the grids 1, 2 and 3 are distributed outside the fuel cell stack 8 and provide air for heat dissipation for the fuel cell stack 8, wherein the grids 2 and 3 are arranged on two sides of the grid 1. In order to better radiate heat, a cooling fan 40, a radiator 4 and a condenser 7 (used for exchanging heat between high-temperature and high-pressure refrigerant in an air conditioning system and air to change the refrigerant into low-temperature and high-pressure refrigerant) are arranged between the fuel cell stack 8 and the grid 1; a cooling fan 60 and a radiator 6 are also arranged between the fuel cell stack 8 and the grid 2; a cooling fan 50 and a radiator 5 are also provided between the fuel cell stack 8 and the grid 3.
Returning to step S12, when the first front cabin hydrogen concentration is less than the first preset hydrogen concentration, the vehicle may continue to start, and the target grid of the fuel cell is controlled to switch from the open state to the closed state, and the target grid is closed, which may better facilitate the coolant temperature rise, so as to facilitate the quick start of the system. The target grid may be any of the grids 1, 2, and 3 in fig. 2.
It should be noted that in order to avoid hydrogen leakage that may accumulate in the front compartment, the grille is kept open while the vehicle is not being started, so as to ensure ventilation and minimize the occurrence of hydrogen concentration increases.
And after the target grille is converted from the open state to the closed state, or in the process that the target grille is converted from the open state to the closed state, acquiring the target refrigerant temperature of the target radiator corresponding to the target grille. As shown in fig. 2, when the target grille is grille 1, the corresponding target radiator is radiator 4; when the target grille is the grille 2, the corresponding target radiator is the radiator 6; when the target grille is grille 3, the corresponding target radiator is radiator 5.
After the target refrigerant temperature is obtained, whether the target refrigerant temperature is larger than a preset temperature threshold value or not is judged, and when the target refrigerant temperature is smaller than or equal to the preset temperature threshold value, the temperature does not reach the starting temperature of the vehicle, and the vehicle needs to continue waiting. When the target refrigerant temperature is greater than the preset temperature threshold, which means that the temperature has reached the starting temperature of the vehicle, the starting may be continued, i.e., step S13 is executed.
In step S13, when the target refrigerant temperature is greater than the preset temperature threshold, the target grille is controlled to be switched from the closed state to the open state, and the opening angle of the target grille is determined according to the target refrigerant temperature.
When the target refrigerant temperature is greater than the preset temperature threshold, the temperature is equal to the starting temperature of the vehicle, and in order to avoid the over-high temperature of the fuel cell stack, more air needs to be provided for the vehicle to reduce the temperature of the refrigerant, so that the target grille can be controlled to be switched from the closed state to the open state, and the fuel cell stack can be cooled. In the process of controlling the target grille to be switched from the closed state to the open state, the opening angle of the target grille can be determined according to the target refrigerant temperature, namely the higher the target refrigerant temperature is, the larger the opening angle of the target grille is, the lower the target refrigerant temperature is, and the smaller the opening angle of the target grille is. The embodiment controls the opening of the target grille in a stepless control mode.
Specifically, the blades of the target grille are controlled to rotate at a preset rotational angular velocity, so that the target grille is switched from the closed state to the open state. The preset rotational angular velocity may be set according to specific situations.
In the process of switching the control target grille from the closed state to the open state, the method further comprises:
step S21, updating the target refrigerant temperature;
step S22, when the updated target refrigerant temperature is within the pre-running temperature range, controlling the blades of the target grille to keep the current angle; the pre-running temperature range is a temperature range which is greater than or equal to a third target temperature and less than or equal to a fourth target temperature, and the third target temperature is less than the fourth target temperature;
step S23, when the updated target refrigerant temperature is less than the third target temperature, controlling the blades of the target grille to reduce the opening angle until the target refrigerant temperature is within the pre-running temperature range;
and step S24, when the target refrigerant temperature is higher than the fourth target temperature, controlling the vanes of the target grille to increase the opening angle until the target refrigerant temperature is within the pre-running temperature range.
And continuously monitoring the temperature of the target refrigerant in the process of converting the closed state of the target grating into the open state, and judging the temperature of the target refrigerant.
When the target refrigerant temperature is within the pre-running temperature range, namely when the target refrigerant temperature is greater than or equal to the third target temperature and less than or equal to the fourth target temperature, the current refrigerant temperature is appropriate, the air intake of the target grille does not need to be adjusted, and then the blades of the target grille are controlled to keep the current angle, so that on the premise of ensuring the heat dissipation effect, the air intake area of the target grille is made smaller as far as possible, and the wind resistance of the whole vehicle is reduced as far as possible. The prerun temperature range can be the optimal working water temperature range of the fuel cell stack, and can be specifically set according to the working technical requirements of the stack.
When the target refrigerant temperature is not within the pre-trip temperature range, namely when the target refrigerant temperature is lower than the third target temperature, the refrigerant temperature is low, and the heat dissipation is too fast, so that the opening angle of the blades of the target grille needs to be controlled to reduce, the air intake is reduced, the temperature of the refrigerant is increased, the target refrigerant temperature can be within the pre-trip temperature range, and all parts of the vehicle are at the optimal working temperature.
Or when the target refrigerant temperature is higher than the fourth target temperature, the refrigerant temperature is higher, and the heat dissipation is too slow, so that the opening angle of the vanes of the target grille needs to be controlled to increase, the air inlet volume is increased, the temperature of the refrigerant is reduced, the target refrigerant temperature can be in the range of the pre-running temperature, and all parts of the vehicle can be in the optimal working temperature.
In summary, in the embodiment, when the vehicle is started, whether the hydrogen concentration in the front cabin is smaller than the first preset hydrogen concentration is detected first, so that whether the vehicle is in a hydrogen leakage state can be determined, the fuel cell vehicle can be prevented from being started in the hydrogen leakage state, and the occurrence probability of safety accidents is further reduced. Further, when the fuel cell automobile does not generate hydrogen leakage, the control target grid is switched from the open state to the closed state so as to increase the temperature of the refrigerant more quickly and facilitate the quick start of the vehicle. And the target refrigerant temperature is monitored, and the opening angle of the target grid is determined according to the target refrigerant temperature, so that the opening angle of the target grid can be reduced as much as possible while the heat dissipation of the pile is met, the wind resistance of the whole vehicle is reduced as much as possible, and the economy of the fuel cell vehicle is improved.
The technical scheme provided by the embodiment can be suitable for the independent control of a plurality of grilles on the vehicle. For example, the three louvers shown in fig. 2 may be separately controlled in the closed state, the open state, and the open angle of the three louvers, respectively, in the manner described above. Among them, the grid 1 of the 3 grids shown in fig. 2 is slightly different from the grids 2 and 3, the grid 1 corresponds to the fuel cell stack 8 and mainly radiates the fuel cell stack 8, and the grid 1 is provided with a corresponding condenser 7 (belonging to a radiating component of an air conditioner) so as to better radiate the fuel cell stack 8, and the grids 2 and 3 mainly radiate the auxiliary components of the fuel cell stack 8 without involving the condenser 7. Therefore, when controlling the grids corresponding to the fuel cell stack, the parameters of the air conditioner also need to be considered, and the specific control mode is as follows:
when the target grid is a first grid (grid 1 shown in fig. 2) corresponding to a fuel cell stack of a fuel cell automobile, the method further includes:
step S31, obtaining the air-conditioning loop pressure of the fuel cell vehicle;
and step S32, when the target refrigerant temperature is greater than the preset temperature threshold value or the air-conditioning loop pressure is greater than the preset pressure threshold value, controlling the target grille to be switched from the closed state to the open state, and determining the opening angle of the target grille according to the target refrigerant temperature.
Step S31 and step S12 may be executed simultaneously, that is, obtaining a target refrigerant temperature of a target radiator corresponding to the target grille, and obtaining an air conditioning loop pressure of the fuel cell vehicle. And judging the target refrigerant temperature and the air-conditioning loop pressure.
When the target refrigerant temperature is less than or equal to the preset temperature threshold and the air conditioner loop pressure is less than or equal to the preset pressure threshold, it means that the galvanic pile does not need to dissipate heat in the current state, and the control of the target grid to keep the closed state is required to continue waiting.
When the target refrigerant temperature is greater than the preset temperature threshold value or the air-conditioning loop pressure is greater than the preset pressure threshold value, as long as at least one of the target refrigerant temperature and the air-conditioning loop pressure is met, the electric pile needs to dissipate heat, and the target grid can be controlled to be switched from the closed state to the open state.
In the process of switching the control target grille from the closed state to the open state, the method further comprises:
step S41, updating the target refrigerant temperature and the air conditioner loop pressure;
step S42, when the updated target refrigerant temperature is in the preset temperature range or the updated air-conditioning loop pressure is in the preset pressure range, controlling the blades of the target grille to keep the current angle; the preset temperature range is a temperature range which is greater than or equal to a first target temperature and less than or equal to a second target temperature, and the first target temperature is less than the second target temperature; the preset pressure range is a pressure range which is greater than or equal to a first target pressure and less than or equal to a second target pressure, and the first target pressure is less than the second target pressure;
step S43, when the updated target refrigerant temperature is less than the first target temperature or the updated air-conditioning loop pressure is less than the first target pressure, controlling the vanes of the target grille to reduce the opening angle until the target refrigerant temperature is within the preset temperature range and the air-conditioning loop pressure is within the preset pressure range;
and step S44, when the target refrigerant temperature is higher than a second target temperature or the air-conditioning loop pressure is higher than a second target pressure, controlling the vanes of the target grille to increase the opening angle until the target refrigerant temperature is within a preset temperature range and the air-conditioning loop pressure is within a preset pressure range.
And continuously monitoring the target refrigerant temperature and the air-conditioning loop pressure in the process of converting the closed state of the target grille into the open state, and judging the target refrigerant temperature and the air-conditioning loop pressure.
When the target refrigerant temperature is within the range of the pre-running temperature or the air-conditioning loop pressure is within the range of the preset pressure, namely when the target refrigerant temperature is greater than or equal to the first target temperature and less than or equal to the second target temperature or the air-conditioning loop pressure is greater than or equal to the first target pressure and less than or equal to the second target pressure, the current refrigerant temperature is proper or the air-conditioning loop pressure is proper, the air intake volume of the target grille does not need to be adjusted, and then the blades of the target grille are controlled to keep the current angle, so that the air intake area of the target grille is smaller as far as possible on the premise of ensuring the heat dissipation effect, and the wind resistance of the whole vehicle is reduced as far as possible. The preset temperature range can be the optimal working water temperature range of the fuel cell stack, and can be specifically set according to the working technical requirements of the stack.
When the target refrigerant temperature is not within the preset temperature range, that is, when the target refrigerant temperature is less than the first target temperature or the air-conditioning circuit pressure is less than the first target pressure, it means that the refrigerant temperature is lower or the air-conditioning pressure is lower, and the heat dissipation is too fast, so that the opening angle of the blades of the target grille needs to be controlled to reduce the air intake, and the temperature of the refrigerant is increased, so that the target refrigerant temperature can be within the preset temperature range or the air-conditioning circuit pressure is within the preset pressure range, and each component of the vehicle is at the optimal working temperature or the optimal air-conditioning circuit pressure.
Or when the target refrigerant temperature is higher than the second target temperature or the air-conditioning circuit pressure is higher than the second target pressure, the refrigerant temperature is higher or the air-conditioning circuit pressure is too high, and the heat dissipation is too slow, so that the opening angle of the blades of the target grille needs to be controlled to increase, the air intake is increased, the temperature of the refrigerant is reduced or the air-conditioning circuit pressure is reduced, the target refrigerant temperature can be within a preset temperature range, or the air-conditioning circuit pressure is within a preset pressure range, and all parts of the vehicle are at the optimal working temperature or the optimal air-conditioning circuit pressure.
In summary, in the embodiment, whether the hydrogen concentration in the front cabin is smaller than the first preset hydrogen concentration is detected first when the vehicle is started, whether the vehicle is in a hydrogen leakage state can be judged, the fuel cell vehicle can be prevented from being started in the hydrogen leakage state, and the occurrence probability of safety accidents is further reduced. Further, when the fuel cell automobile does not generate hydrogen leakage, the control target grid is switched from the open state to the closed state so as to increase the temperature of the refrigerant more quickly and facilitate the quick start of the vehicle. And the target refrigerant temperature is monitored, and the opening angle of the target grid is determined according to the target refrigerant temperature, so that the opening angle of the target grid can be reduced as far as possible while the heat dissipation of the pile is met, the wind resistance of the whole vehicle is reduced as far as possible, and the economy of the fuel cell vehicle is improved.
In the implementation process of the scheme, if a vehicle key off signal of the fuel cell vehicle is detected, which means that the vehicle needs to stop running, it needs to be determined again whether the vehicle has hydrogen leakage, so that the hydrogen concentration of the second front cabin of the fuel cell vehicle needs to be acquired, or the hydrogen concentration of the first front cabin of the fuel cell vehicle needs to be updated.
When the hydrogen concentration of the second front cabin is smaller than the second preset hydrogen concentration, the hydrogen leakage of the whole vehicle is avoided, the target grille can be controlled to be opened and kept in an opened state, the front cabin in the grille keeps ventilation when the whole vehicle is in a parking state, the accumulation of hydrogen is avoided, and the occurrence probability of safety accidents is reduced.
When the hydrogen concentration of the second front cabin is more than or equal to the second preset hydrogen concentration, the whole vehicle is likely to have hydrogen leakage, and the fuel cell vehicle needs to be controlled to send alarm information to remind passengers or drivers to timely handle the hydrogen leakage or timely evacuate personnel to keep away, so that casualty accidents are avoided.
In summary, the embodiment detects whether the hydrogen leakage occurs in the whole vehicle when the fuel cell vehicle stops, so that the safety of the whole vehicle is further improved, and the occurrence probability of safety accidents is reduced.
Taking the heat dissipation system shown in fig. 2 as an example, a specific example is provided with reference to fig. 3 to further explain the solution provided by the present embodiment.
When the whole vehicle generates a KEY starting signal (KEY ON), checking the hydrogen leakage condition of the front cabin, and if the hydrogen leakage is detected, sending hydrogen leakage information to an instrument display by a controller to remind a driver or passengers of hydrogen leakage; if no leakage is detected, the whole vehicle continues to execute the starting program, and the controller sends an instruction to control the grille 1, the grille 2 and the grille 3 to be closed.
The controller monitors the radiator 4 water temperature T4, the radiator 5 water temperature T5, the radiator 6 water temperature T6, and the air conditioning circuit pressure P.
For grids1, when P is less than a preset pressure threshold value PlimitAnd T4 is less than the preset temperature threshold T4limitWhen the grid 1 is opened, the controller does not control the grid to be opened; when the air-conditioning pressure P is greater than PlimitWhen the temperature is higher than the preset value, the air conditioner is indicated to be operated and the grille is required to be opened for air inlet, or when the water temperature of the radiator loop is T4 > T4limitWhen the temperature of the cooling circuit of the radiator 4 is increased, the grille is required to be opened for air inlet cooling for further work, and the grille 1 is controlled to be gradually opened by the controller.
For grid 2, when T6 is less than the preset temperature threshold T6limitWhen the controller does not control the grille 2 to be opened; when the radiator loop water temperature T6 is more than T6limitWhen the temperature of the cooling loop of the radiator 6 is increased, the grille is required to be opened for air inlet cooling for further work, and the grille 2 is controlled to be opened gradually by the controller.
For grid 3, when T5 is less than the preset temperature threshold T5limitWhen the controller does not control the grille 3 to be opened; when the radiator loop water temperature T6 is more than T6limitWhen the temperature of the cooling loop of the radiator 6 is increased, the grille is required to be opened for air inlet cooling when the radiator works further; the controller now controls the grille 3 to be opened gradually.
When the controller receives a shutdown instruction KEY OFF of the whole vehicle, the hydrogen concentration is detected again, whether hydrogen leaks or not is determined, if no hydrogen leaks, the controller controls the gratings to reset to an open state, and if the hydrogen leaks, alarm information is sent out.
In the running process of the whole vehicle, in order to ensure better economy and reduce the resistance of the whole vehicle, the opening degree of the grille blades can be reduced as much as possible under the condition that the basic cooling air inlet requirement of the corresponding cooling loop is met by each grille, as shown in fig. 4. The controller monitors the water temperature T4, the water temperature T5, the water temperature T6, and the air conditioning circuit pressure P.
When P is within the preset pressure range Pe (indicated in fig. 4 as P ═ Pe) or T4 is within the preset temperature range Te (indicated in fig. 4 as T4 ═ Te) for the grid 1, it indicates that the air-conditioning operating pressure or the stack cooling circuit water temperature is in the optimum operating state, at which time the controller controls the grid 1 to maintain the current open angle state. When the air conditioner pressure P is greater than the maximum pressure in the range of Pe (represented by the form P > Pe in FIG. 4) or T4 is greater than the maximum temperature in Te (represented by the form T4 > Te in FIG. 4), indicating that the cooling air inlet of the grille 1 is insufficient, the grille 1 blades need to be opened further, and then the controller controls the grille 1 to increase the opening angle of the grille 1 until P is in Pe; when the air conditioning pressure P is less than the minimum pressure in the Pe range, or T4 is less than the minimum temperature in Te, indicating that the grill 1 is over-cooled, the controller controls the grill 1 to decrease the grill 1 opening angle until P is in Pe or T4 is in Te.
When the temperature T5 is in the preset temperature range T5r, the cooling circuit water temperature is in the optimal working state, and the controller controls the grille 3 to keep the current opening angle state; when T5 is greater than the maximum temperature in T5r, indicating insufficient cooling of grille 3, grille 3 vanes are opened further, and the controller controls grille 3 to increase grille 3 opening angle until T5 is in T5 r. When T5 is less than the minimum temperature in T5r, indicating that the grille 3 is cooling too much, the controller controls grille 3 to decrease the grille 3 opening angle until T5 is within T5 r.
When the temperature T6 is in the preset temperature range T6r, the cooling circuit water temperature is in the optimal working state, and the controller controls the grille 2 to keep the current opening angle state at the moment; when T6 is higher than the maximum temperature in T6r, indicating that the cooling air inlet of the grille 2 is insufficient, the grille 2 blades need to be opened further, and the controller controls the grille 2 to increase the opening angle of the grille 2 until T6 is in T6 r; when T6 is less than the minimum temperature in T6r, indicating that the grille 2 is cooling too much, the controller controls grille 2 to decrease the grille 2 opening angle until T6 is within T6 r.
Wherein, the grid 1, the grid 2 and the grid 3 can be respectively and independently controlled.
In summary, the opening angle of the active grille is controlled according to the temperature or the pressure, so that the resistance of the fuel cell vehicle in the driving process caused by the large opening area of the grille due to the heat dissipation requirement is reduced; the angle adjustment of each grating is controlled according to the cooling temperature requirement of the corresponding cooling loop, so that the control precision is higher; when the whole vehicle is started and shut down, a hydrogen leakage check program is added, the grid is initially reset to be in an open state, and the hydrogen safety of the fuel cell is ensured.
Based on the same inventive concept, the present embodiment provides a grill control apparatus as shown in fig. 5, the apparatus including:
the first front cabin hydrogen concentration acquisition module 51 is used for acquiring the first front cabin hydrogen concentration of the fuel cell automobile when a whole automobile key starting signal of the fuel cell automobile is detected;
the first control module 52 is configured to control a target grille of the fuel cell vehicle to be switched from an open state to a closed state when the first front cabin hydrogen concentration is smaller than a first preset hydrogen concentration, and obtain a target refrigerant temperature of a target radiator corresponding to the target grille;
and the second control module 53 is configured to control the target grille to be switched from the closed state to the open state when the target refrigerant temperature is greater than the preset temperature threshold, and the opening angle of the target grille is determined according to the target refrigerant temperature.
Further, the apparatus further comprises:
the air-conditioning loop pressure acquisition module is used for acquiring the air-conditioning loop pressure of the fuel cell automobile when the target grid is a first grid corresponding to a fuel cell stack of the fuel cell automobile;
and the third control module is used for controlling the target grating to be switched from a closed state to an open state when the temperature of the target refrigerant is greater than a preset temperature threshold value or the pressure of the air-conditioning loop is greater than a preset pressure threshold value, and the opening angle of the target grating is determined according to the temperature of the target refrigerant.
Further, the apparatus further comprises:
the first data updating module is used for updating the target refrigerant temperature and the air-conditioning loop pressure in the process of controlling the target grille to be switched from the closed state to the open state when the target grille is the first grille;
the first execution module is used for controlling the blades of the target grille to keep the current angle when the updated target refrigerant temperature is within a preset temperature range or the updated air-conditioning loop pressure is within a preset pressure range; the preset temperature range is a temperature range which is greater than or equal to a first target temperature and less than or equal to a second target temperature, and the first target temperature is less than the second target temperature; the preset pressure range is a pressure range which is greater than or equal to a first target pressure and less than or equal to a second target pressure, and the first target pressure is less than the second target pressure;
the second execution module is used for controlling the blades of the target grille to reduce the opening angle until the target refrigerant temperature is within a preset temperature range and the air-conditioning loop pressure is within a preset pressure range when the updated target refrigerant temperature is less than the first target temperature or the updated air-conditioning loop pressure is less than the first target pressure;
and the third execution module is used for controlling the blades of the target grille to increase the opening angle until the target refrigerant temperature is within the preset temperature range and the air-conditioning loop pressure is within the preset pressure range when the target refrigerant temperature is greater than the second target temperature or the air-conditioning loop pressure is greater than the second target pressure.
Further, the apparatus further comprises:
and the fourth control module is used for controlling the target grille to keep a closed state when the target refrigerant temperature is less than or equal to a preset temperature threshold and the air-conditioning loop pressure is less than or equal to a preset pressure threshold.
Further, the apparatus further comprises:
the temperature updating module is used for updating the target refrigerant temperature in the process of controlling the target grid to be converted from the closed state to the open state;
the fourth execution module is used for controlling the blades of the target grating to keep the current angle when the updated target refrigerant temperature is within the pre-running temperature range; the pre-running temperature range is a temperature range which is greater than or equal to a third target temperature and less than or equal to a fourth target temperature, and the third target temperature is less than the fourth target temperature;
the fifth execution module is used for controlling the blades of the target grille to reduce the opening angle until the target refrigerant temperature is within the pre-trip temperature range when the updated target refrigerant temperature is lower than the third target temperature;
and the sixth execution module is used for controlling the blades of the target grille to increase the opening angle until the target refrigerant temperature is within the pre-running temperature range when the target refrigerant temperature is higher than the fourth target temperature.
Further, the apparatus further comprises:
the second front cabin hydrogen concentration acquisition module is used for acquiring the second front cabin hydrogen concentration of the fuel cell automobile when a whole automobile key closing signal of the fuel cell automobile is detected;
the fifth control module is used for controlling the target grille to be opened and keeping the target grille in an open state when the hydrogen concentration of the second front cabin is smaller than the second preset hydrogen concentration;
and the sixth control module is used for controlling the fuel cell vehicle to send alarm information when the hydrogen concentration of the second front cabin is greater than or equal to the second preset hydrogen concentration.
Further, a control module comprising:
and the control submodule is used for controlling the blades of the target grating to rotate according to the preset rotating angular speed, so that the target grating is converted into an open state from a closed state.
Based on the same inventive concept, the present embodiment provides an electronic device as shown in fig. 6, including:
a processor 61;
a memory 62 for storing instructions executable by the processor 61;
wherein the processor 61 is configured to execute to implement a grid control method as described above.
Based on the same inventive concept, the present embodiment provides a non-transitory computer-readable storage medium, which when instructions in the storage medium are executed by a processor 61 of an electronic device, enables the electronic device to perform a method of implementing a grid control as described above.
Since the electronic device described in this embodiment is an electronic device used for implementing the method for processing information in this embodiment, a person skilled in the art can understand the specific implementation manner of the electronic device of this embodiment and various variations thereof based on the method for processing information described in this embodiment, and therefore, how to implement the method in this embodiment by the electronic device is not described in detail here. Electronic devices used by those skilled in the art to implement the method for processing information in the embodiments of the present application are all within the scope of the present application.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A grill control method, characterized in that the method comprises:
when a whole vehicle key starting signal of a fuel cell vehicle is detected, acquiring the hydrogen concentration of a first front cabin of the fuel cell vehicle;
when the hydrogen concentration of the first front cabin is smaller than a first preset hydrogen concentration, controlling a target grid of the fuel cell automobile to be converted from an open state to a closed state, and acquiring a target refrigerant temperature of a target radiator corresponding to the target grid;
and when the target refrigerant temperature is greater than a preset temperature threshold value, controlling the target grating to be converted from a closed state to an open state, wherein the opening angle of the target grating is determined according to the target refrigerant temperature.
2. The method of claim 1, wherein when the target grid is a first grid corresponding to a fuel cell stack of the fuel cell vehicle, the method further comprises:
acquiring the pressure of an air conditioning loop of the fuel cell automobile;
and when the target refrigerant temperature is greater than the preset temperature threshold value or the air-conditioning loop pressure is greater than a preset pressure threshold value, controlling the target grid to be switched from a closed state to an open state, wherein the opening angle of the target grid is determined according to the target refrigerant temperature.
3. The method of claim 2, wherein when the target grille is the first grille, the method further comprises, in controlling the target grille to transition from a closed state to an open state:
updating the target refrigerant temperature and the air-conditioning loop pressure;
when the updated target refrigerant temperature is within a preset temperature range or the updated air-conditioning loop pressure is within a preset pressure range, controlling the blades of the target grille to keep a current angle; the preset temperature range is a temperature range which is greater than or equal to a first target temperature and less than or equal to a second target temperature, and the first target temperature is less than the second target temperature; the preset pressure range is a pressure range which is greater than or equal to a first target pressure and less than or equal to a second target pressure, and the first target pressure is less than the second target pressure;
when the updated target refrigerant temperature is lower than the first target temperature or the updated air-conditioning loop pressure is lower than the first target pressure, controlling the blades of the target grille to reduce the opening angle until the target refrigerant temperature is within the preset temperature range and the air-conditioning loop pressure is within the preset pressure range;
and when the target refrigerant temperature is higher than the second target temperature or the air-conditioning loop pressure is higher than the second target pressure, controlling the blades of the target grille to increase the opening angle until the target refrigerant temperature is within the preset temperature range and the air-conditioning loop pressure is within the preset pressure range.
4. The method as claimed in claim 2, wherein when the target refrigerant temperature is less than or equal to the preset temperature threshold and the air conditioning circuit pressure is less than or equal to the preset pressure threshold, the method further comprises:
and controlling the target grille to keep a closed state.
5. The method of claim 1, wherein in controlling the target grille to transition from a closed state to an open state, the method further comprises:
updating the target refrigerant temperature;
when the updated target refrigerant temperature is within a pre-running temperature range, controlling the blades of the target grating to keep a current angle; the pre-running temperature range is a temperature range which is greater than or equal to a third target temperature and less than or equal to a fourth target temperature, and the third target temperature is less than the fourth target temperature;
when the updated target refrigerant temperature is lower than the third target temperature, controlling the blades of the target grille to reduce the opening angle until the target refrigerant temperature is within the pre-running temperature range;
and when the target refrigerant temperature is higher than the fourth target temperature, controlling the blades of the target grille to increase the opening angle until the target refrigerant temperature is within the pre-running temperature range.
6. The method of claim 1, wherein the method further comprises:
when a whole vehicle key closing signal of the fuel cell vehicle is detected, acquiring the hydrogen concentration of a second front cabin of the fuel cell vehicle;
when the hydrogen concentration of the second front cabin is smaller than a second preset hydrogen concentration, controlling the target grille to be opened and keeping the target grille in an opened state;
and when the hydrogen concentration of the second front cabin is greater than or equal to the second preset hydrogen concentration, controlling the fuel cell automobile to send alarm information.
7. The method of claim 1, wherein said controlling the target grille to transition from a closed state to an open state comprises:
and controlling the blades of the target grille to rotate according to a preset rotating angular speed, so that the target grille is converted from a closed state to an open state.
8. A grill control apparatus, the apparatus comprising:
the first front cabin hydrogen concentration acquisition module is used for acquiring the first front cabin hydrogen concentration of the fuel cell automobile when a whole automobile key starting signal of the fuel cell automobile is detected;
the first control module is used for controlling a target grille of the fuel cell automobile to be switched from an open state to a closed state when the hydrogen concentration of the first front cabin is smaller than a first preset hydrogen concentration, and acquiring a target refrigerant temperature of a target radiator corresponding to the target grille;
and the second control module is used for controlling the target grating to be converted from a closed state to an open state when the temperature of the target refrigerant is greater than a preset temperature threshold value, and the opening angle of the target grating is determined according to the temperature of the target refrigerant.
9. An electronic device, comprising:
a processor;
a memory for storing the processor-executable instructions;
wherein the processor is configured to execute to implement a grid control method as claimed in any one of claims 1 to 7.
10. A non-transitory computer readable storage medium, instructions in which, when executed by a processor of an electronic device, enable the electronic device to perform implementing a grid control method as claimed in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210267620.6A CN114619870A (en) | 2022-03-18 | 2022-03-18 | Grid control method, device, equipment and medium |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210267620.6A CN114619870A (en) | 2022-03-18 | 2022-03-18 | Grid control method, device, equipment and medium |
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| CN114619870A true CN114619870A (en) | 2022-06-14 |
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| CN202210267620.6A Pending CN114619870A (en) | 2022-03-18 | 2022-03-18 | Grid control method, device, equipment and medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115366665A (en) * | 2022-08-24 | 2022-11-22 | 一汽解放汽车有限公司 | Air inlet grille adjusting method, device, computer equipment and computer program product |
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2022
- 2022-03-18 CN CN202210267620.6A patent/CN114619870A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115366665A (en) * | 2022-08-24 | 2022-11-22 | 一汽解放汽车有限公司 | Air inlet grille adjusting method, device, computer equipment and computer program product |
| CN115366665B (en) * | 2022-08-24 | 2024-06-04 | 一汽解放汽车有限公司 | Method, device, computer device and computer program product for adjusting air inlet grille |
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