CN114784332B - Cold start control method, device, equipment and medium - Google Patents
Cold start control method, device, equipment and medium Download PDFInfo
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- CN114784332B CN114784332B CN202210313111.2A CN202210313111A CN114784332B CN 114784332 B CN114784332 B CN 114784332B CN 202210313111 A CN202210313111 A CN 202210313111A CN 114784332 B CN114784332 B CN 114784332B
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- 238000000034 method Methods 0.000 title claims abstract description 66
- 239000000446 fuel Substances 0.000 claims abstract description 108
- 230000009977 dual effect Effects 0.000 claims abstract description 41
- 238000010438 heat treatment Methods 0.000 claims abstract description 26
- 239000002826 coolant Substances 0.000 claims abstract description 19
- 239000001257 hydrogen Substances 0.000 claims description 113
- 229910052739 hydrogen Inorganic materials 0.000 claims description 113
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 86
- 239000000110 cooling liquid Substances 0.000 claims description 47
- 150000002431 hydrogen Chemical class 0.000 claims description 39
- 238000012545 processing Methods 0.000 claims description 19
- 208000028659 discharge Diseases 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
- H01M8/04253—Means for solving freezing problems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
- H01M8/04225—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells during start-up
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
- H01M8/04268—Heating of fuel cells during the start-up of the fuel cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/043—Processes for controlling fuel cells or fuel cell systems applied during specific periods
- H01M8/04302—Processes for controlling fuel cells or fuel cell systems applied during specific periods applied during start-up
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0432—Temperature; Ambient temperature
- H01M8/04358—Temperature; Ambient temperature of the coolant
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04992—Processes for controlling fuel cells or fuel cell systems characterised by the implementation of mathematical or computational algorithms, e.g. feedback control loops, fuzzy logic, neural networks or artificial intelligence
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
- H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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Abstract
The invention discloses a cold start control method, a device, equipment and a medium, which are applied to a fuel cell dual system comprising a first fuel cell system and a second fuel cell system, wherein the method comprises the following steps: when the temperature of the coolant discharged from the target battery system is smaller than or equal to a first preset temperature, judging preset cold start conditions of all subsystems in the fuel cell dual system in sequence, wherein the target battery system is the first fuel cell system and/or the second fuel cell system; and when the subsystems meet preset cold starting conditions, starting the fuel cell stack in the target battery system to perform self-heating so as to shorten the cold starting time. By adopting the invention, the cold start control of the fuel cell dual system can be realized efficiently, and the cold start time can be shortened.
Description
Technical Field
The present invention relates to the field of automotive technologies, and in particular, to a cold start control method, apparatus, device, and medium.
Background
China is a large automobile country and has a huge automobile market. While bringing economic benefits, the energy consumption and environmental pollution are huge. With the increasing competition in the automotive field, various enterprises and universities begin to conduct research on hydrogen fuel cell automobiles. The application field of fuel cell automobiles is mainly commercial vehicle markets at present, and the demands for high-power fuel cell automobiles are gradually increased due to the large volume and large weight of commercial vehicles, so that dual-system fuel cell automobiles are generated.
However, in practice, it is found that when the fuel cell is in a low-temperature environment, the cathode and anode gas pipelines inside the fuel cell and water in the electric pile can generate icing phenomenon, so that the air flow channels in the electric pile are congested, the activity of the cathode and anode catalyst is reduced, and the fuel cell automobile is started for a long time in the low-temperature environment or fails to start.
Thus, there is a need for a better fuel cell cold start control scheme.
Disclosure of Invention
The embodiment of the application can efficiently realize the cold start control of the fuel cell dual system and shorten the cold start time by providing the cold start control method, the cold start control device, the cold start control equipment and the cold start control medium.
In one aspect, the present application provides, by an embodiment of the present application, a cold start control method applied to a fuel cell dual system including a first fuel cell system and a second fuel cell system, the method including:
when the temperature of the coolant discharged from the target battery system is smaller than or equal to a first preset temperature, judging preset cold start conditions of all subsystems in the fuel cell dual system in sequence, wherein the target battery system is the first fuel cell system and/or the second fuel cell system;
And when the subsystems meet preset cold starting conditions, starting the fuel cell stack in the target battery system to perform self-heating so as to shorten the cold starting time.
Optionally, each subsystem sequentially includes a thermal management subsystem, an air subsystem and a hydrogen subsystem, and the determining, sequentially and sequentially, the preset cold start condition for each subsystem in the fuel cell dual system further includes:
adjusting at least one of the following devices in the thermal management subsystem so as to start the thermal management subsystem when the cooling liquid inlet pressure is greater than or equal to a first preset pressure and the temperature of the hydrogen discharge valve is greater than a second preset temperature:
when the temperature of the hydrogen discharge valve is less than or equal to the first preset temperature, starting heating of the hydrogen discharge valve;
controlling the rotating speed of the water pump according to the temperature difference of the cooling liquid entering and exiting the stack;
controlling a temperature control valve to open a circulation mode;
and controlling the power of the positive temperature coefficient thermistor PTC according to the cooling liquid discharging temperature.
Optionally, the determining the preset cold start condition for each subsystem in the fuel cell dual system sequentially further includes:
adjusting at least one of the following devices in the air subsystem, so that the air subsystem is started when the rotating speed of the air compressor is higher than the preset idle rotating speed:
Controlling the opening degree of the back pressure valve according to the target air pressure of the air in the pile;
and controlling the rotating speed of the air compressor according to the target air flow of the air into the pile.
Optionally, the determining the preset cold start condition for each subsystem in the fuel cell dual system sequentially further includes:
adjusting at least one of the following components in the hydrogen subsystem to start the hydrogen subsystem:
opening a hydrogen inlet valve;
controlling the opening degree of the proportional valve;
controlling the rotating speed of the hydrogen circulating pump;
and opening a hydrogen discharge drain valve to perform corresponding hydrogen discharge and water discharge treatment.
Optionally, after turning on the thermal management subsystem, the method further comprises:
detecting the device states of the subsystems to determine whether the cold start of the target battery system fails; the method specifically comprises the following steps:
closing a hydrogen discharge valve, opening a hydrogen inlet valve, and adjusting the opening of a proportional valve to enable the proportional valve and the hydrogen inlet valve to be closed when the hydrogen stack inlet pressure is greater than or equal to a second preset pressure;
after the hydrogen discharge valve is opened for a first preset time period, judging whether the current hydrogen stacking pressure is smaller than or equal to a third preset pressure;
if yes, determining that the hydrogen loop is not blocked, and continuously executing the judging step of starting the air subsystem when the cooling liquid outlet temperature rises to a second preset temperature;
If not, determining that the hydrogen loop is blocked, so that the cold start of the target battery system fails.
Optionally, after turning on the thermal management subsystem, the method further comprises:
detecting the device states of the subsystems to determine whether the cold start of the target battery system fails; the method specifically comprises the following steps:
sending a target opening instruction of the back pressure valve;
when the error between the actual opening of the back pressure valve and the preset target opening is smaller than the preset error, determining that the back pressure valve is completely broken, and continuously executing the judging step of starting the air subsystem when the cooling liquid outlet temperature rises to a second preset temperature;
when the error between the actual opening of the back pressure valve and the quality inspection of the target opening is not smaller than the preset error, a reference opening instruction of the back pressure valve is sent to perform multi-stage icebreaking operation on the back pressure valve, and the step of sending the target opening instruction of the back pressure valve is repeatedly executed until the preset times are repeated;
and when the error between the actual opening of the back pressure valve and the target opening at the end is not smaller than the preset error, determining that the back pressure valve fails to break ice, so that the cold start of the target battery system fails.
Optionally, in the self-heating process, the method further comprises:
determining whether the target battery system meets at least one of the following to determine whether cold start of the target battery system fails;
whether the cooling liquid stack outlet temperature is greater than or equal to a third preset temperature;
the minimum value of the monolithic voltage of the electric pile in the target battery system is larger than a preset first voltage;
the average value of the cell stack monolithic voltages in the target battery system is greater than a preset second voltage.
In another aspect, the present application provides, according to an embodiment of the present application, a cold start control device applied to a fuel cell dual system including a first fuel cell system and a second fuel cell system, the device including: the device comprises a processing module and a starting module, wherein:
the processing module is used for judging preset cold start conditions for all subsystems in the fuel cell dual system in sequence when the cooling liquid outlet temperature of the target cell system is smaller than or equal to a first preset temperature, wherein the target cell system is the first fuel cell system and/or the second fuel cell system;
and the starting module is used for starting the fuel cell stack in the target battery system to perform self-heating when the subsystems meet preset cold starting conditions so as to shorten the cold starting time.
The descriptions or details not described in the embodiments of the present application may be referred to the relevant descriptions in the foregoing method embodiments, which are not repeated herein.
In another aspect, the present application provides, by an embodiment of the present application, a terminal device, including: a processor, a memory, a communication interface, and a bus; the processor, the memory and the communication interface are connected through the bus and complete communication with each other; the memory stores executable program code; the processor runs a program corresponding to the executable program code by reading the executable program code stored in the memory for executing the cold start control method as described above.
In another aspect, the present application provides a computer-readable storage medium storing a program that when run on a terminal device performs the cold start control method as described above.
One or more technical solutions provided in the embodiments of the present application at least have the following technical effects or advantages: when the temperature of the coolant discharged from the stack of the target battery system is smaller than or equal to a first preset temperature, judging preset cold start conditions of all subsystems in the fuel cell dual system in sequence, wherein the target battery system is a first fuel cell system and/or a second fuel cell system in the fuel cell dual system; and when the subsystems meet preset cold starting conditions, starting the fuel cell stack in the target battery system to perform self-heating so as to shorten the cold starting time. In the scheme, the method and the device can judge according to the cold start conditions of all subsystems in the fuel cell dual system to perform cold start control on the target battery system so as to shorten the time of cold start of the battery system, thereby realizing convenient and efficient cold start control of the target battery system.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a dual fuel cell system according to an embodiment of the present application.
Fig. 2-3 are schematic flow diagrams of two cold start control methods according to an embodiment of the present application.
Fig. 4 is a schematic flow chart of hydrogen loop congestion determination according to an embodiment of the present application.
Fig. 5 is a schematic flow chart of a back pressure valve ice breaking judgment according to an embodiment of the present application.
Fig. 6 is a schematic structural diagram of a cold start control device according to an embodiment of the present application.
Fig. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
Detailed Description
The applicant has also found in the course of proposing the present application that: at present, the cold start starting condition of the fuel cell dual-system automobile is judged according to the current ambient temperature. And if the ambient temperature is less than or equal to the set value, performing a cold start process. The two systems simultaneously set the target temperature and power of a positive temperature coefficient thermistor (Positive Temperature Coefficient, PTC), the temperature of the electric pile is increased to be more than 0 ℃, then a normal starting-up process is carried out, a thermal management subsystem, a hydrogen subsystem and an air subsystem are started, and the hydrogen and the air are introduced into the electric pile to react for power generation so as to meet the power requirement of the whole automobile.
However, in practice it is found that: the cold start starting condition is judged only by using the current ambient temperature, is not comprehensive enough, and does not perform different process operations according to different states of the two systems, so that the starting time of the fuel cell system is increased. After entering the cold start flow, before starting PTC heating, the device state of each subsystem is not judged, which may cause problems such as cold start failure.
The embodiment of the application solves the technical problems of long cold start time and the like in the prior art by providing the cold start control method.
The technical scheme of the embodiment of the application aims to solve the technical problems, and the overall thought is as follows: when the temperature of the coolant discharged from the reactor of the target battery system is smaller than or equal to a first preset temperature, judging preset cold start conditions of all subsystems in the fuel cell dual system in sequence, wherein the target battery system is a first fuel cell system and/or a second fuel cell system in the fuel cell dual system;
and when the subsystems meet preset cold starting conditions, starting the fuel cell stack in the target battery system to perform self-heating so as to shorten the cold starting time.
In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.
First, the term "and/or" appearing herein is merely an association relationship describing associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
Fig. 1 is a schematic structural diagram of a dual fuel cell system according to an embodiment of the present application. The system 10 shown in fig. 1 includes a hydrogen inlet valve 101, a proportional valve 102, a hydrogen circulation pump 103, a fuel cell dual system 104, and a command converter 105 (which may also be a dc-dc converter) arranged in this order. In cyclical connection with the fuel cell dual system 104 further comprises: back pressure valve 106, mixing line 107, hydrogen discharge drain valve 108 and gas-liquid separator 109. The system 10 further includes, connected in sequence: an air filter 110, an air flow meter 111, an air compressor 112, an intercooler 113, and a humidifier 114.
As further illustrated, the system 10 further includes the following components connected in a loop: a coolant in-stack temperature sensor 115, a water pump 116, a temperature control valve 117, a PTC118, and a coolant out-stack temperature sensor 119. Optionally, a heat dissipation device 120 is further disposed between the thermo valve 117 and the PTC 118. The individual components of the fuel cell dual system are not excessively defined and described in detail herein.
Fig. 2 is a schematic flow chart of a cold start control method according to an embodiment of the present application. The method shown in fig. 2 is applied to the fuel cell dual system shown in fig. 1, and comprises the following implementation steps:
s201, when the cooling liquid outlet temperature of a target battery system is smaller than or equal to a first preset temperature, judging preset cold start conditions of all subsystems in the fuel cell dual system in sequence, wherein the target battery system is the first fuel cell system and/or the second fuel cell system.
When the cooling liquid out-stacking temperature of the target battery system (i.e. the stack temperature in the target battery system) is detected to be less than or equal to a first preset temperature (e.g. 0 ℃) and greater than or equal to a first calibration temperature a, and the current ambient temperature of the target battery system is greater than or equal to a calibration ambient temperature B (e.g. -30 ℃) and less than or equal to a preset ambient temperature (e.g. 0 ℃), optionally, the present application may further combine the duration time of each temperature, for example, after the duration time of the temperature reaches the preset duration time (e.g. 10 seconds), the present application may determine a cold start flow entering the target battery system, and execute the step of step S201.
It can be appreciated that the present application may control the decision of whether to enter the cold start-up procedure of the target battery system based on the ambient temperature and the coolant exit temperature of each target battery system. Specifically, for example, when the coolant exit temperature (which may represent the stack temperature) of each of the first fuel cell system and the second fuel cell system in the present application is simultaneously less than or equal to the first preset temperature of 0 ℃, the present application may enter a dual-system cold start procedure. The cooling liquid out-of-stack temperature can be acquired by a cooling liquid out-of-stack temperature sensor. Optionally, the present application may further include an ambient temperature and a temperature duration, specifically, for example, when the ambient temperature is greater than or equal to the calibrated ambient temperature B and less than or equal to the preset ambient temperature 0 ℃, and the respective coolant exit temperatures of the first and second fuel cell systems are both less than or equal to the first preset temperature and the duration is longer than the preset duration, then both the first and second fuel cell systems may enter the cold start procedure.
When the temperature of the cooling liquid discharged from any cell system in the fuel cell dual systems is less than or equal to the first preset temperature, a cold start flow of the single fuel cell system can be entered, and further the PTC can be started to heat the electric pile of the single fuel cell system. When the temperature of the cooling liquid discharged from the reactor rises to a second preset temperature (for example, -5 ℃), the electric reactor of the single fuel cell system can be started to perform self-heating, so that the cold start time is shortened. Optionally, the present application may further add an ambient temperature and a temperature duration, specifically, for example, when the ambient temperature is less than or equal to a preset ambient temperature, and the coolant outlet temperature of any one of the battery systems is less than or equal to a first preset temperature and the duration is longer than a preset duration, and the coolant outlet temperature of another one of the battery systems is greater than the first preset temperature, then a cold start procedure of the single fuel cell system may be entered.
On the contrary, when the temperature of the cooling liquid discharged from any one of the two fuel cell systems is higher than the first preset temperature of 0 ℃, the normal-temperature starting process can be started, the upper limit of the Mahonia output of the fuel cell system is sent, and the power requirement of the whole vehicle is met to a certain extent. Optionally, the present application may further add a duration, specifically, for example, the coolant out-stacking temperature of any battery system is greater than the first preset temperature 0 ℃, and the duration is greater than the preset duration, so that the present application may enter a normal temperature start-up procedure.
Accordingly, there are two cases in this application that will lead to a cold start failure of the fuel cell dual system: the cooling liquid stack outlet temperature of the battery system is smaller than or equal to the first calibration temperature A; the ambient temperature is less than or equal to the calibrated ambient temperature B.
And S202, when the subsystems meet preset cold starting conditions, starting the fuel cell stack in the target battery system to perform self-heating so as to shorten the cold starting time.
After entering the cold start flow of the target battery system, the thermal management subsystem can be started. Fig. 3 is a schematic flow chart of a control method after entering a cold start. As in fig. 3, the present application may be configured to activate the thermal management subsystem and continue with the subsequent steps by adjusting and controlling at least one of the following devices when the coolant in-stack pressure of the target battery system is greater than or equal to a first preset pressure (e.g., 120 KPa) and the temperature of the hydrogen bleed valve is greater than a second preset temperature (e.g., 40 ℃): when the temperature of the hydrogen discharge valve is less than or equal to the first preset temperature, starting heating of the hydrogen discharge valve; the rotating speed of the water pump is controlled according to the temperature difference of the cooling liquid entering and exiting the stack, specifically, the water pump enabling signal is sent/set to be 1 through the CAN bus, and PID closed-loop control is carried out on the water pump according to the temperature difference of the cooling liquid entering and exiting the stack as a control target; the temperature control valve is controlled to open a small circulation mode, so that the rapid rise of the temperature of the cooling liquid is facilitated; and controlling the power of the positive temperature coefficient thermistor PTC according to the cooling liquid discharging temperature, specifically, setting a PTC enabling signal to be 1, setting the target temperature of a PTC water outlet to be 5 ℃, and controlling the PTC power according to the cooling liquid discharging temperature.
And when the cooling liquid stacking pressure is greater than a first preset pressure (such as 120 KPa) and the temperature of the hydrogen discharging valve is greater than or equal to a second preset temperature (such as 40 ℃), the start of the thermal management subsystem is successful.
As further shown in fig. 3, the present application may adjust at least one of the following components in the air subsystem, so that the air subsystem is started when the rotational speed of the air compressor is greater than a preset idle rotational speed: controlling the opening degree of the back pressure valve according to the target air pressure of the air in the pile; and controlling the rotating speed of the air compressor according to the target air flow of the air into the pile. Specifically, for example, when the coolant off-stack temperature reaches the PTC target temperature, e.g., -5 ℃, the present application may activate the air subsystem, enabling the air compressor; according to a pile manual, setting air pile inlet flow rate during low-temperature starting, and performing PID closed-loop control on the air compressor by taking the air pile inlet flow rate as feedback quantity. Meanwhile, according to the pile manual, the air pile inlet target pressure can be set, the air pile inlet pressure is used as feedback quantity, and PID closed-loop control is carried out on the back pressure valve. And when the rotating speed of the air machine is higher than the idle rotating speed (the lowest rotating speed after the air compressor operates), the air subsystem is successfully started.
As further shown in fig. 3, the present application may adjust at least one of the following devices in the hydrogen subsystem to start the hydrogen subsystem: opening a hydrogen inlet valve; controlling the opening degree of the proportional valve; controlling the rotating speed of the hydrogen circulating pump; and opening a hydrogen discharge drain valve to perform corresponding hydrogen discharge and water discharge treatment. Specifically, after the air subsystem is successfully started, the hydrogen subsystem can be started, the hydrogen inlet valve is opened, and hydrogen is introduced into the electric pile. And setting a target hydrogen gas feeding pressure value during low-temperature starting according to a pile manual, taking the hydrogen gas feeding pressure as a feedback quantity, and performing closed-loop control on the proportional valve. And sending an icebreaking start command to the hydrogen circulating pump through the CAN signal, and starting the hydrogen circulating pump. The judging condition of the successful starting of the hydrogen subsystem is as follows: the hydrogen gas path is pressurized, and the hydrogen gas pressure reaches the target value, and the target value is determined by the electric pile. The feedback state of the hydrogen circulating pump is that the starting is successful. The temperature of the hydrogen discharge valve is greater than or equal to a preset specified temperature, for example, 5 c, etc. Simultaneously, the three conditions are met, and the hydrogen subsystem can be considered to be successfully started.
It can be appreciated that the present application may perform a low pressure precharge when the air subsystem is successfully activated. When the lowest value of the monolithic voltage of the electric pile is larger than or equal to the corresponding preset first voltage when the target battery system is at the open-circuit voltage, the low-voltage pre-charging is successful. After the low-voltage pre-charging is successful, the DCDC starting instruction can be issued. After the DCDC converter feeds back the starting-up completion signal, a pile of the target battery system can be started to perform a self-heating process. Since the target battery system is not started successfully at this time, the vehicle control unit (Vehicle Control Unit, VCU) requires a circuit of 0A. Therefore, in the self-heating process of the cell stack, the FCCU (fuel system controller/unit) sets the DCDC low-side target current to be 100A, and the loading gradient is divided into five sections by adopting a sectional loading mode, and the cell stack target current rises by 20A every 30 s. And, the application calibrates the target current loading rate of the electric pile through the cooling liquid discharging temperature. The lower the coolant exit temperature of the target cell system, the faster the stack loading rate. The temperature of the cooling liquid is gradually increased along with the heating of the cooling liquid by the PTC and the heat generated during the operation of the electric pile.
In practice, a cell stack is typically composed of a plurality of stack cells, typically 300 or more stack cells. The present application may continue to determine whether the target battery system satisfies any of the following conditions: the cooling liquid discharging temperature is less than or equal to a third preset temperature (5 ℃), whether the lowest value/minimum value of the cell stack voltage in the target battery system is less than or equal to a preset first voltage (calibration value), and whether the average value of the cell stack voltage is less than or equal to a preset second voltage. If any of the above conditions is met, a cold start failure of the target battery system may be determined; otherwise, the subsequent flow may continue.
In an alternative embodiment, after the cold start failure of the target battery system, the present application may perform a shutdown purge procedure, and send the failure information of the start failure to the VCU through the CAN bus. Conversely, after a successful cold start of the target battery system, the present application responds to the power demand of the VCU.
In an alternative embodiment, the present application may also detect/check the device status of each subsystem after the thermal management subsystem is turned on. Specifically, see the schematic flow diagrams of the hydrogen gas path blockage judgment and the back pressure valve ice breaking judgment shown in fig. 4 and 5 respectively.
Fig. 4 is a schematic flow chart of a possible hydrogen path blockage determination. As shown in fig. 4, the present application may close the hydrogen discharge valve, open the hydrogen inlet valve, and set the target pressure of hydrogen gas inlet to a second preset pressure (for example, 110 kpa), so as to perform the hydrogen gas circuit pressure establishment according to the opening degree of the closed-loop control proportional valve of the target pressure of hydrogen gas inlet. When the hydrogen gas pressure reaches a second preset pressure, such as 110kpa, the hydrogen inlet valve and the proportional valve are closed, the hydrogen discharge valve is opened, the pressure of the hydrogen gas path is relieved, and the preset time period, such as 5s, is counted. If the hydrogen gas pressure is less than the third preset pressure (e.g., 101 kpa), the hydrogen gas path is not blocked, and the subsequent steps of the present application can be continued. Otherwise, judging that the hydrogen path is blocked, and failing to start the target battery system.
Fig. 5 shows a schematic diagram of a possible determination flow of the back pressure valve breaking ice. As in fig. 5, the present application may send the back pressure valve target opening degree to be a first preset opening degree (e.g., 30), and observe the back pressure valve actual opening degree. If the error between the actual opening and the target opening of the back pressure valve is smaller than the preset error (for example, 10%), judging that the back pressure valve is completely iced, and continuously executing the subsequent process.
And if the error between the actual opening and the target opening of the back pressure valve is greater than or equal to a preset error (such as 10%), sending the target opening of the back pressure valve to be a second preset opening (such as 0), wherein the second preset opening is smaller than the first preset opening. After timing for a first set period of time (for example, two seconds), the present application may send the back pressure valve with a target opening of 100, repeat for 5 cycles, and perform a primary ice breaking operation.
Further, the present application may send the back pressure valve target opening degree to be 30 again, and observe the actual back pressure valve opening degree. And if the error between the actual opening and the target opening of the back pressure valve is smaller than the preset error by 10%, judging that the back pressure valve is used for breaking ice. On the contrary, if the error between the actual opening and the target opening of the back pressure valve is greater than or equal to 10%, the target opening of the back pressure valve is sent to be 0, the target opening of the back pressure valve is sent to be 100 after a second set time period (for example, 1 second) is counted, 30 cycles are repeated, and the secondary ice breaking operation is executed. And sending the target opening 30 of the back pressure valve again, observing the actual opening of the back pressure valve, judging that the back pressure valve breaks ice if the error between the actual opening of the back pressure valve and the target opening is smaller than 10%, and judging that the back pressure valve breaks ice if the error is not smaller than 10%, otherwise, judging that the back pressure valve breaks ice and the cold start fails. The secondary ice breaking operation flow is described herein by taking the secondary ice breaking operation as an example, but the present invention is not limited thereto. In practical applications, the number of times of executing the ice breaking operation, that is, the number of times of repeatedly executing the error judgment process is not limited.
In an alternative embodiment, the present application may perform PTC heating on the target battery system after determining the device status of each subsystem, so as to shorten the cold start time of the target battery system.
It can be seen that the dual-system cold start process, the single-system cold start process and the normal-temperature start process are distinguished through the ambient temperature and the cooling liquid outlet stack temperature of the two battery systems, and any battery system is successfully started, so that the VCU demand current can be responded, the cold start time is shortened, and the whole vehicle power demand is responded quickly. After entering a cold start flow, the state of each subsystem device is judged, the device is heated, broken ice and the like, normal operation of the device in the cold start process is ensured, and the success probability of the cold start is improved. When any one of the battery systems fails to be cold started, the shutdown purging process is automatically carried out, the water content in the electric pile and the pipeline is reduced, and the preparation is made for the next cold start. After entering a cold start flow, different start strategies are adopted according to different states of the two battery systems, so that the start time of the fuel battery system is shortened, and the whole vehicle power requirement is responded as soon as possible.
Based on the same inventive concept, another embodiment of the present application provides a device and a terminal device corresponding to implementing the cold start control method described in the embodiments of the present application.
Fig. 6 is a schematic structural diagram of a cold start control device according to an embodiment of the present application. The apparatus 60 shown in fig. 6 is applied to a fuel cell dual system including a first fuel cell system and a second fuel cell system, the apparatus 60 including: a processing module 601 and a starting module 602, wherein:
The processing module 601 is configured to sequentially determine a preset cold start condition for each subsystem in the dual fuel cell system when the coolant outlet temperature of a target battery system is less than or equal to a first preset temperature, where the target battery system is the first fuel cell system and/or the second fuel cell system;
the starting module 602 is configured to start the fuel cell stack in the target battery system to perform self-heating when the respective subsystems meet a preset cold start condition, so as to shorten a cold start time.
Optionally, each subsystem sequentially includes a thermal management subsystem, an air subsystem, and a hydrogen subsystem, and the processing module 601 is specifically configured to:
adjusting at least one of the following devices in the thermal management subsystem so as to start the thermal management subsystem when the cooling liquid inlet pressure is greater than or equal to a first preset pressure and the temperature of the hydrogen discharge valve is greater than a second preset temperature:
when the temperature of the hydrogen discharge valve is less than or equal to the first preset temperature, starting heating of the hydrogen discharge valve;
controlling the rotating speed of the water pump according to the temperature difference of the cooling liquid entering and exiting the stack;
controlling a temperature control valve to open a circulation mode;
And controlling the power of the positive temperature coefficient thermistor PTC according to the cooling liquid discharging temperature.
Optionally, the processing module 601 is specifically configured to:
adjusting at least one of the following devices in the air subsystem, so that the air subsystem is started when the rotating speed of the air compressor is higher than the preset idle rotating speed:
controlling the opening degree of the back pressure valve according to the target air pressure of the air in the pile;
and controlling the rotating speed of the air compressor according to the target air flow of the air into the pile.
Optionally, the processing module 601 is specifically configured to:
adjusting at least one of the following components in the hydrogen subsystem to start the hydrogen subsystem:
opening a hydrogen inlet valve;
controlling the opening degree of the proportional valve;
controlling the rotating speed of the hydrogen circulating pump;
and opening a hydrogen discharge drain valve to perform corresponding hydrogen discharge and water discharge treatment.
Optionally, after the thermal management subsystem is turned on, the processing module 601 is further configured to:
detecting the device states of the subsystems to determine whether the cold start of the target battery system fails; the method specifically comprises the following steps:
closing a hydrogen discharge valve, opening a hydrogen inlet valve, and adjusting the opening of a proportional valve to enable the proportional valve and the hydrogen inlet valve to be closed when the hydrogen stack inlet pressure is greater than or equal to a second preset pressure;
After the hydrogen discharge valve is opened for a first preset time period, judging whether the current hydrogen stacking pressure is smaller than or equal to a third preset pressure;
if yes, determining that the hydrogen loop is not blocked, and continuously executing the judging step of starting the air subsystem when the cooling liquid outlet temperature rises to a second preset temperature;
if not, determining that the hydrogen loop is blocked, so that the cold start of the target battery system fails.
Optionally, after the thermal management subsystem is turned on, the processing module 601 is further configured to:
detecting the device states of the subsystems to determine whether the cold start of the target battery system fails; the method specifically comprises the following steps:
sending a target opening instruction of the back pressure valve;
when the error between the actual opening of the back pressure valve and the preset target opening is smaller than the preset error, determining that the back pressure valve is completely broken, and continuously executing the judging step of starting the air subsystem when the cooling liquid outlet temperature rises to a second preset temperature;
when the error between the actual opening of the back pressure valve and the quality inspection of the target opening is not smaller than the preset error, a reference opening instruction of the back pressure valve is sent to perform multi-stage icebreaking operation on the back pressure valve, and the step of sending the target opening instruction of the back pressure valve is repeatedly executed until the preset times are repeated;
And when the error between the actual opening of the back pressure valve and the target opening at the end is not smaller than the preset error, determining that the back pressure valve fails to break ice, so that the cold start of the target battery system fails.
Optionally, during the self-heating process, the processing module 601 is further configured to:
determining whether the target battery system meets at least one of the following to determine whether cold start of the target battery system fails;
whether the cooling liquid stack outlet temperature is higher than a third preset temperature or not;
the minimum value of the monolithic voltage of the electric pile in the target battery system is larger than a preset first voltage;
the average value of the cell stack monolithic voltages in the target battery system is greater than a preset second voltage.
Please refer to fig. 7, which is a schematic structural diagram of a terminal device according to an embodiment of the present application. The terminal device 70 as shown in fig. 7 includes: at least one processor 701, communication interface 702, user interface 703 and memory 704, the processor 701, communication interface 702, user interface 703 and memory 704 may be connected by a bus or otherwise, with embodiments of the present invention being exemplified by connection via bus 705. Wherein,
the processor 701 may be a general purpose processor such as a central processing unit (Central Processing Unit, CPU).
The communication interface 702 may be a wired interface (e.g., an ethernet interface) or a wireless interface (e.g., a cellular network interface or using a wireless local area network interface) for communicating with other terminals or websites. In the embodiment of the present invention, the communication interface 702 is specifically configured to obtain parameters such as the temperature of the cooling liquid going out of the stack.
The user interface 703 may be a touch panel, including a touch screen and a touch screen, for detecting an operation instruction on the touch panel, or the user interface 703 may be a physical button or a mouse. The user interface 703 may also be a display screen for outputting, displaying images or data.
The Memory 704 may include Volatile Memory (RAM), such as random access Memory (Random Access Memory); the Memory may also include a Non-Volatile Memory (Non-Volatile Memory), such as a Read-Only Memory (ROM), a Flash Memory (Flash Memory), a Hard Disk (HDD), or a Solid State Drive (SSD); memory 704 may also include combinations of the above types of memory. The memory 704 is used for storing a set of program codes, and the processor 701 is used for calling the program codes stored in the memory 704 to perform the following operations:
When the temperature of the coolant discharged from the target battery system is smaller than or equal to a first preset temperature, judging preset cold start conditions of all subsystems in the fuel cell dual system in sequence, wherein the target battery system is the first fuel cell system and/or the second fuel cell system;
and when the subsystems meet preset cold starting conditions, starting the fuel cell stack in the target battery system to perform self-heating so as to shorten the cold starting time.
Optionally, each subsystem sequentially includes a thermal management subsystem, an air subsystem and a hydrogen subsystem, and the sequentially determining the preset cold start condition for each subsystem in the fuel cell dual system includes:
adjusting at least one of the following devices in the thermal management subsystem so as to start the thermal management subsystem when the cooling liquid inlet pressure is greater than or equal to a first preset pressure and the temperature of the hydrogen discharge valve is greater than a second preset temperature:
when the temperature of the hydrogen discharge valve is less than or equal to the first preset temperature, starting heating of the hydrogen discharge valve;
controlling the rotating speed of the water pump according to the temperature difference of the cooling liquid entering and exiting the stack;
Controlling a temperature control valve to open a circulation mode;
and controlling the power of the positive temperature coefficient thermistor PTC according to the cooling liquid discharging temperature.
Optionally, the determining the preset cold start condition for each subsystem in the fuel cell dual system sequentially further includes:
adjusting at least one of the following devices in the air subsystem, so that the air subsystem is started when the rotating speed of the air compressor is higher than the preset idle rotating speed:
controlling the opening degree of the back pressure valve according to the target air pressure of the air in the pile;
and controlling the rotating speed of the air compressor according to the target air flow of the air into the pile.
Optionally, the determining the preset cold start condition for each subsystem in the fuel cell dual system sequentially further includes:
adjusting at least one of the following components in the hydrogen subsystem to start the hydrogen subsystem:
opening a hydrogen inlet valve;
controlling the opening degree of the proportional valve;
controlling the rotating speed of the hydrogen circulating pump;
and opening a hydrogen discharge drain valve to perform corresponding hydrogen discharge and water discharge treatment.
Optionally, after turning on the thermal management subsystem, the processor 701 is further configured to:
detecting the device states of the subsystems to determine whether the cold start of the target battery system fails; the method specifically comprises the following steps:
Closing a hydrogen discharge valve, opening a hydrogen inlet valve, and adjusting the opening of a proportional valve to enable the proportional valve and the hydrogen inlet valve to be closed when the hydrogen stack inlet pressure is greater than or equal to a second preset pressure;
after the hydrogen discharge valve is opened for a first preset time period, judging whether the current hydrogen stacking pressure is smaller than or equal to a third preset pressure;
if yes, determining that the hydrogen loop is not blocked, and continuously executing the judging step of starting the air subsystem when the cooling liquid outlet temperature rises to a second preset temperature;
if not, determining that the hydrogen loop is blocked, so that the cold start of the target battery system fails.
Optionally, after turning on the thermal management subsystem, the processor 701 is further configured to:
detecting the device states of the subsystems to determine whether the cold start of the target battery system fails; the method specifically comprises the following steps:
sending a target opening instruction of the back pressure valve;
when the error between the actual opening of the back pressure valve and the preset target opening is smaller than the preset error, determining that the back pressure valve is completely broken, and continuously executing the judging step of starting the air subsystem when the cooling liquid outlet temperature rises to a second preset temperature;
When the error between the actual opening of the back pressure valve and the quality inspection of the target opening is not smaller than the preset error, a reference opening instruction of the back pressure valve is sent to perform multi-stage icebreaking operation on the back pressure valve, and the step of sending the target opening instruction of the back pressure valve is repeatedly executed until the preset times are repeated;
and when the error between the actual opening of the back pressure valve and the target opening at the end is not smaller than the preset error, determining that the back pressure valve fails to break ice, so that the cold start of the target battery system fails.
Optionally, during the self-heating process, the processor 701 is further configured to:
determining whether the target battery system meets at least one of the following to determine whether cold start of the target battery system fails;
whether the cooling liquid stack outlet temperature is higher than a third preset temperature or not;
the minimum value of the monolithic voltage of the electric pile in the target battery system is larger than a preset first voltage;
the average value of the cell stack monolithic voltages in the target battery system is greater than a preset second voltage.
Since the terminal device described in this embodiment is a terminal device used to implement the method in this embodiment, based on the method described in this embodiment, those skilled in the art can understand the specific implementation of the terminal device in this embodiment and various modifications thereof, so how this terminal device implements the method in this embodiment will not be described in detail herein. As long as those skilled in the art use terminal devices for implementing the methods in the embodiments of the present application, all belong to the scope of protection intended in the present application.
One or more technical solutions provided in the embodiments of the present application at least have the following technical effects or advantages: when the temperature of the coolant discharged from the stack of the target battery system is smaller than or equal to a first preset temperature, judging preset cold start conditions of all subsystems in the fuel cell dual system in sequence, wherein the target battery system is a first fuel cell system and/or a second fuel cell system in the fuel cell dual system; and when the subsystems meet preset cold starting conditions, starting the fuel cell stack in the target battery system to perform self-heating so as to shorten the cold starting time. In the scheme, the method and the device can judge according to the cold start conditions of all subsystems in the fuel cell dual system to perform cold start control on the target battery system so as to shorten the time of cold start of the battery system, thereby realizing convenient and efficient cold start control of the target battery system.
It will be appreciated by those skilled in the art that 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 flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations 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. It is therefore intended that the following claims be interpreted as including the 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 modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (9)
1. A cold start control method applied to a fuel cell dual system including a first fuel cell system and a second fuel cell system, the method comprising:
When the temperature of the coolant discharged from the target battery system is smaller than or equal to a first preset temperature, judging preset cold start conditions of all subsystems in the fuel cell dual system in sequence, wherein the target battery system is the first fuel cell system and/or the second fuel cell system;
when each subsystem meets a preset cold start condition, starting a fuel cell stack in the target battery system to perform self-heating so as to shorten the cold start time;
each subsystem sequentially comprises a thermal management subsystem, an air subsystem and a hydrogen subsystem, and after the thermal management subsystem is started, the method further comprises:
detecting the device states of the subsystems to determine whether the cold start of the target battery system fails; the method specifically comprises the following steps:
closing a hydrogen discharge valve, opening a hydrogen inlet valve, and adjusting the opening of a proportional valve to enable the proportional valve and the hydrogen inlet valve to be closed when the hydrogen stack inlet pressure is greater than or equal to a second preset pressure;
after the hydrogen discharge valve is opened for a first preset time period, judging whether the current hydrogen stacking pressure is smaller than or equal to a third preset pressure;
if yes, determining that the hydrogen loop is not blocked, and continuously executing the judging step of starting the air subsystem when the cooling liquid outlet temperature rises to a second preset temperature;
If not, determining that the hydrogen loop is blocked, so that the cold start of the target battery system fails.
2. The method of claim 1, wherein the sequentially determining the preset cold start condition for each subsystem in the fuel cell dual system comprises:
adjusting at least one of the following devices in the thermal management subsystem so as to start the thermal management subsystem when the cooling liquid inlet pressure is greater than or equal to a first preset pressure and the temperature of the hydrogen discharge valve is greater than a second preset temperature:
when the temperature of the hydrogen discharge valve is less than or equal to the first preset temperature, starting heating of the hydrogen discharge valve;
controlling the rotating speed of the water pump according to the temperature difference of the cooling liquid entering and exiting the stack;
controlling a temperature control valve to open a circulation mode;
and controlling the power of the positive temperature coefficient thermistor PTC according to the cooling liquid discharging temperature.
3. The method of claim 2, wherein the determining, in sequence, the preset cold start condition for each subsystem in the fuel cell dual system further comprises:
adjusting at least one of the following devices in the air subsystem, so that the air subsystem is started when the rotating speed of the air compressor is higher than the preset idle rotating speed:
Controlling the opening degree of the back pressure valve according to the target air pressure of the air in the pile;
and controlling the rotating speed of the air compressor according to the target air flow of the air into the pile.
4. The method of claim 3, wherein the determining, in sequence, the preset cold start condition for each subsystem in the fuel cell dual system further comprises:
adjusting at least one of the following components in the hydrogen subsystem to start the hydrogen subsystem:
opening a hydrogen inlet valve;
controlling the opening degree of the proportional valve;
controlling the rotating speed of the hydrogen circulating pump;
and opening a hydrogen discharge drain valve to perform corresponding hydrogen discharge and water discharge treatment.
5. The method of claim 2, wherein after turning on the thermal management subsystem, the method further comprises:
detecting the device states of the subsystems to determine whether the cold start of the target battery system fails; the method specifically comprises the following steps:
sending a target opening instruction of the back pressure valve;
when the error between the actual opening of the back pressure valve and the preset target opening is smaller than the preset error, determining that the back pressure valve is completely broken, and continuously executing the judging step of starting the air subsystem when the cooling liquid outlet temperature rises to a second preset temperature;
When the error between the actual opening of the back pressure valve and the target opening is not smaller than the preset error, a reference opening instruction of the back pressure valve is sent to perform multi-stage icebreaking operation on the back pressure valve, and the step of sending the target opening instruction of the back pressure valve is repeatedly executed until the preset times are repeated;
and when the error between the actual opening of the back pressure valve and the target opening at the end is not smaller than the preset error, determining that the back pressure valve fails to break ice, so that the cold start of the target battery system fails.
6. The method of claim 1, wherein during the self-heating process, the method further comprises:
judging whether the target battery system meets at least one of the following to determine that the cold start of the target battery system fails;
the cooling liquid stack outlet temperature is less than or equal to a third preset temperature;
the minimum value of the monolithic voltage of the electric pile in the target battery system is smaller than or equal to a preset first voltage;
and the average value of the monolithic voltage of the electric pile in the target battery system is smaller than or equal to a preset second voltage.
7. A cold start control apparatus for use in a fuel cell dual system including a first fuel cell system and a second fuel cell system, the apparatus comprising: the device comprises a processing module and a starting module, wherein:
The processing module is used for judging preset cold start conditions for all subsystems in the fuel cell dual system in sequence when the cooling liquid outlet temperature of the target cell system is smaller than or equal to a first preset temperature, wherein the target cell system is the first fuel cell system and/or the second fuel cell system;
the starting module is used for starting the fuel cell stack in the target battery system to perform self-heating when the subsystems meet preset cold starting conditions so as to shorten the cold starting time;
each subsystem sequentially comprises a thermal management subsystem, an air subsystem and a hydrogen subsystem, and after the thermal management subsystem is started, the processing module is further used for detecting the device state of each subsystem so as to determine whether the cold start of the target battery system fails; the method specifically comprises the following steps:
closing a hydrogen discharge valve, opening a hydrogen inlet valve, and adjusting the opening of a proportional valve to enable the proportional valve and the hydrogen inlet valve to be closed when the hydrogen stack inlet pressure is greater than or equal to a second preset pressure;
after the hydrogen discharge valve is opened for a first preset time period, judging whether the current hydrogen stacking pressure is smaller than or equal to a third preset pressure;
If yes, determining that the hydrogen loop is not blocked, and continuously executing the judging step of starting the air subsystem when the cooling liquid outlet temperature rises to a second preset temperature;
if not, determining that the hydrogen loop is blocked, so that the cold start of the target battery system fails.
8. A terminal device, characterized in that the terminal device comprises: a processor, a memory, a communication interface, and a bus; the processor, the memory and the communication interface are connected through the bus and complete communication with each other; the memory stores executable program code; the processor runs a program corresponding to the executable program code by reading the executable program code stored in the memory for executing the cold start control method according to any one of the preceding claims 1 to 6.
9. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a program that, when run on a terminal device, performs the cold start control method according to any one of the preceding claims 1-6.
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| CN113839064A (en) * | 2021-09-29 | 2021-12-24 | 北京亿华通科技股份有限公司 | Vehicle-mounted fuel cell device and control method thereof |
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| FI128599B (en) * | 2018-06-29 | 2020-08-31 | Teknologian Tutkimuskeskus Vtt Oy | A fuel cell system and a method and apparatus for starting a fuel cell stack |
| KR20200055287A (en) * | 2018-11-13 | 2020-05-21 | 현대자동차주식회사 | Control system and control method of cold start for fuel cell |
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| KR20110062627A (en) * | 2009-12-03 | 2011-06-10 | 현대자동차주식회사 | Apparatus for cold starting control of fuel cell system and method thereof |
| WO2020173166A1 (en) * | 2019-02-28 | 2020-09-03 | 中山大洋电机股份有限公司 | Fuel cell cold start system and cold start control method |
| WO2021143149A1 (en) * | 2020-01-17 | 2021-07-22 | 中山大洋电机股份有限公司 | Fuel cell tail exhaust hydrogen concentration detection and mixing dilution device and fuel cell |
| CN113299949A (en) * | 2021-04-08 | 2021-08-24 | 东风汽车集团股份有限公司 | Fuel cell thermal management system with low-temperature cold start function and control method |
| CN113745588A (en) * | 2021-07-28 | 2021-12-03 | 东风汽车集团股份有限公司 | Cold start method and device for fuel cell vehicle |
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