Fuel cell starting data acquisition method, system and device and electronic equipment

Abstract

The invention discloses a fuel cell starting data acquisition method, system and device and electronic equipment. The method comprises the following steps: carrying out flow control on cooling liquid in a thermal management subsystem according to a preset temperature control gradient, and the thermal management subsystem is arranged in a fuel cell; target temperature data and electrical performance data of the fuel cell in the starting process are obtained, and the target temperature data at least comprise temperature data of an electric pile area in the fuel cell; and determining starting data of the fuel cell in the starting process based on the flow data of the cooling liquid, the electrical performance data of the fuel cell and the target temperature data. The technical problem that the battery data collection efficiency is not ideal due to the fact that the starting test range is limited in the prior art is solved.

Description

Technical Field

[0001] The present application relates to the field of fuel cells, and in particular, to a method, system, device and electronic device for acquiring startup data of a fuel cell. Background Art

[0002] As a new energy technology, proton exchange membrane fuel cells have water as a byproduct of the reaction. They are clean and pollution-free, and have good application prospects in the automotive field. During the startup of proton exchange membrane fuel cells below 0°C, the product water will freeze and hinder the reaction. Severe freezing will cause startup failure. At present, cold start below 0°C (hereinafter referred to as low-temperature start) is still a key issue facing the large-scale application of proton exchange membrane fuel cells in the automotive field, and a lot of research is needed to ensure the reliability of low-temperature start.

[0003] On the one hand, the related technology relies on standing still at a set ambient temperature, and gradually lowering the temperature of the fuel cell through heat conduction and natural convection heat transfer, which takes a long time, and its test time cost is too high and the test efficiency is low. On the other hand, due to the influence of the water pump flow characteristics and the system loop resistance characteristics, there is a disadvantage of a small coolant flow control range, and there is always a minimum flow limit. The minimum flow limit will narrow the test range of the low-temperature start test, resulting in a reduction in test results and data output, which will bring certain negative impacts to the formulation of a more reasonable low-temperature start strategy.

[0004] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0005] The embodiments of the present application provide a fuel cell startup data acquisition method, system, device and electronic device to at least solve the technical problem in the related art that the startup test range is limited, resulting in unsatisfactory battery data collection efficiency.

[0006] According to one aspect of an embodiment of the present application, a method for acquiring startup data of a fuel cell is provided, comprising: controlling the flow of a coolant in a thermal management subsystem according to a predetermined temperature control gradient, wherein the thermal management subsystem is arranged inside the fuel cell; acquiring target temperature data and electrical performance data of the fuel cell during the startup process, wherein the target temperature data at least includes temperature data of a stack area in the fuel cell; and determining startup data of the fuel cell during the startup process based on the flow data of the coolant, as well as the electrical performance data and target temperature data of the fuel cell.

[0007] Optionally, before controlling the flow of the coolant in the thermal management subsystem according to a predetermined temperature control gradient, the method also includes: controlling the connection between the thermal management subsystem and a cooling subsystem outside the fuel cell; starting a heat exchange process between the coolant of the thermal management subsystem and the coolant of the cooling subsystem to obtain first temperature data of the fuel cell, wherein the coolant in the cooling subsystem is pretreated to a predetermined temperature threshold; based on the first temperature data, determining a first holding time for the fuel cell to maintain a predetermined temperature threshold; when the first holding time reaches a first predetermined time threshold, controlling the disconnection between the thermal management subsystem and the cooling subsystem.

[0008] Optionally, before controlling the thermal management subsystem to connect with the cooling subsystem outside the fuel cell, the method also includes: controlling the coolant in the cooling subsystem to a predetermined temperature threshold; determining a second holding time for the coolant in the cooling subsystem to maintain the predetermined temperature threshold; and allowing the thermal management subsystem to connect with the cooling subsystem when the second holding time reaches a second predetermined time threshold.

[0009] Optionally, a two-way valve with adjustable opening is provided in the thermal management subsystem, and the flow of coolant in the thermal management subsystem is controlled according to a predetermined temperature control gradient, including: determining the opening of the two-way valve based on the temperature control gradient; and controlling the flow of coolant in the thermal management subsystem according to the opening.

[0010] Optionally, the target temperature data also includes: temperature data of the edge position of the fuel cell stack in the stacking direction of the fuel cell stack, temperature data of the center position of the fuel cell stack, and current collector temperature data of the fuel cell.

[0011] According to another aspect of an embodiment of the present application, a fuel cell startup data acquisition system is provided, comprising: a thermal management subsystem and a controller, wherein the thermal management subsystem comprises a two-way valve with an adjustable opening, a temperature sensor, and a flow meter, the flow meter being used to obtain flow data of a coolant in the thermal management subsystem, the temperature sensor being used to obtain target temperature data, the target temperature data comprising at least temperature data of a stack area in the fuel cell; the two-way valve being used to control the flow of the coolant in the thermal management subsystem according to a predetermined temperature control gradient, wherein the thermal management subsystem is arranged inside the fuel cell; the controller being connected to the two-way valve, and being used to obtain target temperature data and electrical performance data of the fuel cell during the startup process; determining the startup data of the fuel cell during the startup process based on the flow data, as well as the electrical performance data and target temperature data of the fuel cell.

[0012] Optionally, the system further includes: the system further includes a cooling subsystem, and the cooling subsystem is connected to the thermal management subsystem via a three-way valve group.

[0013] Optionally, there are multiple temperature sensors, and the multiple temperature sensors are respectively arranged at the edge of the fuel cell stack in the stacking direction of the fuel cell stack, the center of the fuel cell stack, and the current collector of the fuel cell.

[0014] According to another aspect of an embodiment of the present application, a fuel cell startup data acquisition device is provided, including: a flow control module, used to control the flow of coolant in a thermal management subsystem according to a predetermined temperature control gradient, wherein the thermal management subsystem is arranged inside the fuel cell; a detection module, used to obtain target temperature data and electrical performance data of the fuel cell during the startup process, wherein the target temperature data at least includes temperature data of the stack area in the fuel cell; a data acquisition module, used to determine the startup data of the fuel cell during the startup process based on the flow data of the coolant, and the electrical performance data and target temperature data of the fuel cell.

[0015] According to another aspect of an embodiment of the present application, an electronic device is provided, comprising: one or more processors and a memory, the memory being used to store one or more programs, wherein when the one or more programs are executed by one or more processors, the one or more processors implement any one of the fuel cell startup data acquisition methods.

[0016] In the embodiment of the present application, the flow rate of the coolant in the thermal management subsystem is controlled according to a predetermined temperature control gradient, wherein the thermal management subsystem is arranged inside the fuel cell; the target temperature data and electrical performance data of the fuel cell during the startup process are obtained, wherein the target temperature data at least includes the temperature data of the stack area in the fuel cell; based on the flow data of the coolant, the electrical performance data of the fuel cell and the target temperature data, the startup data of the fuel cell during the startup process is determined. The purpose of accurately controlling and optimizing the cold start process of the fuel cell is achieved, and the technical effect of improving the startup test of the fuel cell is realized, thereby solving the technical problem that the startup test range is limited in the related art, resulting in unsatisfactory battery data collection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 is a flow chart of an optional fuel cell startup data acquisition method provided according to an embodiment of the present application;

[0019] Figure 2 is a principle block diagram of an optional fuel cell startup data acquisition system provided according to an embodiment of the present application;

[0020] Figure 3 is a schematic structural diagram of an optional fuel cell startup data acquisition system provided according to an embodiment of the present application;

[0021] Figure 4 is a schematic diagram of temperature setting of an optional fuel cell startup data acquisition system provided according to an embodiment of the present application;

[0022] Figure 5 is a rendering of an optional fuel cell startup data acquisition method provided in an embodiment of the present application;

[0023] Figure 6 is a schematic flow chart of an optional fuel cell startup data acquisition method provided according to an embodiment of the present application;

[0024] Figure 7 It is a schematic diagram of an optional fuel cell startup data acquisition device provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0026] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0027] In the early stage of the low-temperature start-up test of fuel cells in the related technology, the method of letting the fuel cell stand in an environmental chamber set to a certain temperature to make the temperature of the fuel cell reach the required low-temperature start-up temperature is mainly adopted. By leaving the fuel cell at a set ambient temperature (such as -30°C), the temperature of the fuel cell is gradually reduced and finally reaches the ambient temperature through heat conduction and natural convection heat transfer. It takes a long time to achieve the temperature reduction of the fuel cell using this method. For example, according to some experimental standards, it is stipulated that the fuel cell needs to stand at the corresponding ambient temperature for at least 12 hours. Especially for development requirements with a faster pace, the problems of high test time cost and low test efficiency will be more prominent.

[0028] The low-temperature start thermal management test bench provided in the related art, such as the system architecture of the large and small cycles of the cooling loop of the automotive fuel cell power system, has at least the following problems for the system architecture of the common low-temperature start thermal management test bench: First, due to the influence of the water pump flow characteristics and the system loop resistance characteristics, there is a disadvantage of a small coolant flow control range, and there is always a minimum flow limit. The minimum flow limit will narrow the test range of the low-temperature start test, resulting in a reduction in test results and data output, which will have a certain negative impact on the formulation of a more reasonable low-temperature start strategy.

[0029] Secondly, the temperature sensor installed at a specific position of the loop cannot directly reflect the actual temperature inside the fuel cell and its changes. When the electrochemical reaction occurs in the fuel cell, it first reacts and generates heat in the cathode catalyst layer area, and the heat is transferred to the relatively low temperature area by heat conduction and convection. When it reaches the plate area, the relatively low temperature coolant takes the heat out of the fuel cell by forced convection heat transfer, and the coolant temperature gradually increases along the fuel cell outlet. Along the flow direction, the coolant flows through various pipes and components along the process. The temperature sensor will detect the increase in coolant temperature only after the temperature-increasing coolant flows through the temperature sensor. Through this process analysis, it can be seen that when the system architecture of this test bench is used for low-temperature start-up tests, the temperature detected by the temperature sensor has hysteresis, and this temperature also deviates from the actual temperature of the fuel cell. It has an adverse effect on the judgment of the test results and the formulation of subsequent low-temperature start-up strategies.

[0030] In response to the above problems, an embodiment of the present application provides an embodiment of a method for acquiring fuel cell startup data. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0031] Figure 1is a flow chart of an optional fuel cell startup data acquisition method provided according to an embodiment of the present application, such as Figure 1 As shown, the method comprises the following steps:

[0032] Step S102, controlling the flow rate of the coolant in the thermal management subsystem according to a predetermined temperature control gradient, wherein the thermal management subsystem is disposed inside the fuel cell;

[0033] It can be understood that the temperature of the fuel cell is managed by controlling the flow of the coolant in the thermal management subsystem according to the predetermined temperature control gradient. The coolant flow directly affects the thermal management of the fuel cell, that is, the temperature change of the fuel cell during the startup process. During cold start, reasonable control of the coolant flow helps to uniformly heat the fuel cell stack, and the accuracy of the flow control directly affects the accuracy of the temperature change.

[0034] Optionally, according to the test purpose and fuel cell characteristics, a temperature control gradient is set, that is, a planned sequence of temperature changes during the cold start of the fuel cell, for example, gradually increasing the temperature from an extremely low temperature (such as -30°C) with a temperature accuracy of 1°C.

[0035] In an optional embodiment, before controlling the flow of the coolant in the thermal management subsystem according to a predetermined temperature control gradient, the method also includes: controlling the connection between the thermal management subsystem and a cooling subsystem outside the fuel cell; starting a heat exchange process between the coolant of the thermal management subsystem and the coolant of the cooling subsystem to obtain first temperature data of the fuel cell, wherein the coolant in the cooling subsystem is pretreated to a predetermined temperature threshold; based on the first temperature data, determining a first holding time for the fuel cell to meet the predetermined temperature threshold; when the first holding time reaches a first predetermined time threshold, controlling the disconnection between the thermal management subsystem and the cooling subsystem.

[0036] It can be understood that before the flow of the coolant in the thermal management subsystem inside the fuel cell is controlled to cold start according to the predetermined temperature control gradient, a pre-cooling treatment stage is required. The thermal management subsystem will be connected to the external cooling subsystem (which can be called a rapid cooling subsystem), and the fuel cell will be pre-cooled by the coolant in the cooling subsystem until the fuel cell reaches an initial low temperature state, that is, the first temperature data. During the pre-cooling process, the coolant in the cooling subsystem needs to be pre-treated to a predetermined temperature threshold. The pre-treatment process ensures that the coolant exchanged with the thermal management subsystem can effectively cool the fuel cell to the required initial low temperature state. According to the first temperature data obtained after the pre-cooling treatment, the first holding time that the fuel cell needs to be maintained in a state that meets the predetermined temperature threshold is determined. The determination of the first holding time is based on the need for the fuel cell to operate stably at low temperatures, ensuring that the fuel cell can be in a stable low temperature environment in the subsequent cold start test. When the first holding time reaches the first predetermined time threshold, that is, the fuel cell has been maintained in a stable low temperature state after the pre-cooling treatment for a sufficient time, the thermal management subsystem should be disconnected from the cooling subsystem to prepare for the cold start test phase.

[0037] Through the above treatment, the fuel cell can be quickly cooled to the low temperature state required for the cold start test, and by setting the first holding time, it is ensured that the fuel cell has enough time to achieve a uniform and stable temperature distribution at this temperature, which is conducive to the precise control and data collection of the subsequent cold start test, and can significantly shorten the preparation time for the low temperature start test, improve the test efficiency and data accuracy. Through the pre-cooling treatment of the external cooling subsystem, the fuel cell is ensured to be in a stable low temperature environment before the cold start test, which improves the reliability of the test.

[0038] Optionally, before the cooling process is performed, the fuel cell under test is purged according to a set purging method before cooling.

[0039] Optionally, the above-mentioned cooling subsystem may also be referred to as a rapid cooling subsystem, which is used to achieve rapid cooling of the fuel cell and shorten the preparation time for the low-temperature start-up test. The rapid cooling subsystem may be composed of a refrigeration system, a heat exchange device, a three-way valve, a pipeline, a temperature sensor, a control unit, a water pump and a coolant. The refrigeration system is composed of a compressor, a condenser, an evaporator, a pipeline, a refrigerant, electrical equipment and a control unit. When the rapid cooling subsystem is running, the coolant in the pipeline of the rapid cooling subsystem flows through the evaporator of the refrigeration unit to achieve rapid temperature reduction. The control unit is used to control the target temperature of the coolant, and controls the operation of the water pump of the rapid cooling subsystem so that the coolant after cooling through the evaporator flows through the pipeline and the heat exchange device.

[0040] Optionally, the thermal management subsystem of the fuel cell is connected to the rapid cooling subsystem through the above-mentioned heat exchange device. In addition to the heat exchange device, the thermal management subsystem also includes a water pump, an electric three-way valve, a two-way valve with adjustable opening, a flow meter, a temperature sensor, a control unit, a heat dissipation device, a pipeline, a water storage device, a coolant and a fuel cell under test. The low-temperature coolant after cooling in the rapid cooling subsystem exchanges heat with the relatively high-temperature coolant in the thermal management subsystem through the heat exchange device, so that the temperature of the relatively high-temperature coolant in the thermal management subsystem is rapidly reduced. The control unit in the fuel cell subsystem controls the operation of the water pump in the thermal management subsystem to make the low-temperature coolant after cooling flow through the fuel cell under test and other devices in the thermal management subsystem, so as to achieve rapid cooling of the fuel cell under test and the thermal management subsystem. At the same time, the control unit in the thermal management subsystem receives the temperature signal fed back by the temperature sensor in the thermal management subsystem, and controls the operation of each component in the thermal management subsystem according to the fed-back temperature signal to achieve the target temperature control of the fuel cell under test and the thermal management subsystem.

[0041] Optionally, the low-temperature coolant in the thermal management subsystem flows through the fuel cell under test and other components in the thermal management subsystem to reduce the temperature of the fuel cell under test and the thermal management subsystem. After the temperatures detected by the temperature sensor of the thermal management subsystem and the thermal physical quantity sensor installed on the fuel cell under test reach the set test target temperature, the rapid cooling subsystem and the thermal management subsystem are kept in operation until the temperatures detected by the temperature sensor of the thermal management subsystem and the temperature detection subsystem installed on the fuel cell under test stabilize at the test target temperature. Then, the electric three-way valve of the thermal management subsystem is switched to the pipeline that short-circuits (i.e. isolates) the heat exchange device, thereby completing the preliminary preparation test for the low-temperature startup test. The above-mentioned temperature detection subsystem includes several groups of thermal physical quantity sensors with tiny structures, and the temperature detection subsystem interacts with the control unit.

[0042] In an optional embodiment, before controlling the thermal management subsystem to connect with the cooling subsystem outside the fuel cell, the method also includes: controlling the coolant in the cooling subsystem to a predetermined temperature threshold; determining a second holding time for the coolant in the cooling subsystem to maintain the predetermined temperature threshold; and allowing the thermal management subsystem to connect with the cooling subsystem when the second holding time reaches a second predetermined time threshold.

[0043] It can be understood that before connecting the thermal management subsystem inside the fuel cell with the external cooling subsystem (for quickly reducing the temperature of the fuel cell to the cold start condition), it is necessary to ensure that the coolant temperature in the cooling subsystem is stable at a predetermined temperature threshold and maintain this temperature state for a certain period of time (i.e., the second holding period) until the second predetermined period threshold is met. Only when the cooling subsystem meets these conditions is it allowed to establish a connection with the thermal management subsystem to prepare for the cold start of the fuel cell.

[0044] Through the above processing, after the cooling subsystem completes the coolant temperature regulation and reaches a stable state, the connection with the thermal management subsystem is quickly established, which can significantly shorten the test preparation time and improve the efficiency of the entire cold start test. This avoids unnecessary waiting and speeds up the pace of development and testing. In the cold start test, the temperature state of the coolant has a direct impact on the results. By standardizing the coolant temperature preprocessing steps and ensuring that all tests are carried out under the same or similar conditions, the comparability and reliability of the test data are improved, laying the foundation for accurate strategy formulation and performance analysis.

[0045] Optionally, the required test target temperature (i.e., a predetermined temperature threshold), such as -30°C, is set, and the refrigeration unit and water pump of the rapid cooling subsystem are started to work, and the temperature sensor on the rapid cooling subsystem side detects that the coolant temperature is close to the target temperature. When the rapid cooling subsystem stably achieves cooling, the electric three-way valve provided in the fuel cell thermal management subsystem can be controlled to completely switch the rapid cooling subsystem to the pipeline connected to the fuel cell under test. The water pump of the thermal management subsystem is started, and the coolant in the thermal management subsystem begins to flow and passes through the heat exchange device, generating heat exchange with the low-temperature coolant in the rapid cooling subsystem, and the temperature of the coolant in the thermal management subsystem is reduced to become low-temperature coolant.

[0046] In an optional embodiment, a two-way valve with an adjustable opening is provided in the thermal management subsystem, and the flow of the coolant in the thermal management subsystem is controlled according to a predetermined temperature control gradient, including: determining the opening of the two-way valve based on the temperature control gradient; and controlling the flow of the coolant in the thermal management subsystem according to the opening.

[0047] It can be understood that during the cold start of the fuel cell, the temperature control gradient is a predetermined sequence of temperature changes, and the flow rate and amount of the coolant are controlled by determining the exact opening required for the two-way valve. Through the refined control of the coolant flow, the temperature rise process of the fuel cell can be controlled more accurately, which is conducive to providing detailed data on the temperature and electrical performance changes during the cold start of the fuel cell, and is helpful to understand the cold start performance of the fuel cell, so as to select the best start-up plan under different temperature conditions.

[0048] Optionally, the two-way valve may be a controlled electronic two-way valve.

[0049] Optionally, the thermal management subsystem can expand the controllable flow range and flow detection of the coolant in the low-temperature start test. The control unit controls the water pump of the thermal management subsystem to run at a certain speed, and then adjusts the opening of the adjustable two-way valve from closed to fully open, so that the coolant flow of the thermal management subsystem can cover the range of small flow close to zero to large flow, breaking through the minimum flow limit of the system architecture of the common low-temperature start thermal management test bench in the relevant technology. At the same time, the control unit receives the flow information fed back by the flow meter in the thermal management subsystem to detect the flow.

[0050] Step S104, obtaining target temperature data and electrical performance data of the fuel cell during startup, wherein the target temperature data at least includes temperature data of a stack region in the fuel cell;

[0051] It can be understood that the electrical performance data of the fuel cell during the cold start process can include voltage, current, and power output. These data reflect the electrochemical activity and efficiency of the fuel cell at different temperatures and are important indicators for evaluating the effectiveness of the cold start strategy. Accurately control the flow rate of the coolant in the thermal management subsystem. The flow rate directly affects the heating or cooling rate of the fuel cell and the temperature distribution of the electrochemical reaction. The coolant flow rate needs to be adjusted to accurately control the flow rate of the coolant in the thermal management subsystem. The flow rate directly affects the heating or cooling rate of the fuel cell and the temperature distribution of the electrochemical reaction. In different temperature control stages, the coolant flow rate needs to be adjusted to achieve a change transition in the temperature control gradient and obtain rich battery data in the startup phase.

[0052] In an optional embodiment, the target temperature data also includes: temperature data at the edge of the fuel cell stack in the stacking direction of the fuel cell stack, temperature data at the center of the fuel cell stack, and current collector temperature data of the fuel cell.

[0053] It can be understood that by obtaining the temperature data of the edge position, center position and current collector of the stack, the temperature distribution of the fuel cell during the cold start process can be fully understood, avoiding the lag in the detection temperature of the fuel cell due to the detection of the coolant with temperature changes. The temperature data at the center of the stack is crucial to understanding the heat generation and heat distribution inside the stack. Therefore, detecting and controlling the temperature at the center helps to optimize the reaction conditions and ensure the electrical performance during cold start. As an important component in the stack, the temperature of the current collector directly affects the electrochemical reaction of the edge battery and the hydrothermal management of the stack. By detecting the temperature data of the current collector, the impact of the coolant flow on the thermal distribution of the stack can be evaluated.

[0054] Based on the temperature data of the above-mentioned key positions, the cold start strategy can be adjusted in real time, including the coolant flow rate, heating rate, etc. The collected temperature data can be used for subsequent data analysis. By comparing the temperature changes under different flow control, the key temperature data of the fuel cell stack can be comprehensively detected. It can more finely control and optimize the thermal management strategy during the cold start process, ensure the performance stability and safety of the battery when starting at low temperatures, and provide data support for the development of more efficient cold start strategies.

[0055] Optionally, the target temperature data can be acquired by a plurality of temperature sensors provided in the temperature detection subsystem, and used to accurately detect and feedback the actual temperature of the fuel cell under test. The hysteresis and accuracy of the temperature of the fuel cell under test detected by the system architecture of the common low-temperature startup thermal management test bench are improved. The temperature detection subsystem includes several groups of thermophysical quantity sensors (i.e., a temperature sensor) with tiny structures, and the temperature detection subsystem interacts with the control unit.

[0056] Optionally, the fuel cell under test includes a fuel cell core component (ie, a fuel cell stack), a current collector, an insulating component, and an end plate disposed sequentially from the inside to the outside on both sides of the fuel cell core component.

[0057] Optionally, the current collector of the fuel cell under test also has a structure in which a thermophysical quantity sensor with a microstructure is embedded. The thermophysical quantity sensor with a microstructure is installed in the pre-embedded structure of the current collector component on both sides of the stacking direction of the fuel cell core component and the middle area. During the low-temperature startup test, the temperature of each position of the fuel cell under test can be directly detected by the thermophysical quantity sensor with a microstructure installed at each position, which can more quickly and accurately reflect the actual temperature of the fuel cell under test, and improve the hysteresis and accuracy of the temperature of the fuel cell under test detected by the system architecture of the original common low-temperature startup thermal management test bench.

[0058] Step S106, determining the startup data of the fuel cell during the startup process based on the flow data of the coolant, the electrical performance data of the fuel cell and the target temperature data.

[0059] It can be understood that the coolant flow data, electrical performance data and target temperature data are used to analyze and determine the key startup data of the fuel cell during the cold start process. Through the collection and analysis of test data, the cold start strategy can be continuously improved and optimized to adapt to various low-temperature startup scenarios. Comprehensive analysis of coolant flow, electrical performance and temperature data can better understand the impact of coolant flow on the cold start performance of the fuel cell, thereby formulating the optimal startup strategy. It helps to improve the startup success rate and startup speed of the fuel cell in a low-temperature environment, while ensuring the electrochemical reaction efficiency during the startup process and the overall stability of the fuel cell.

[0060] It should be noted that the temperature detection subsystem, combined with the wider flow control and flow detection of the thermal management subsystem, can more directly and clearly obtain the intuitive impact of low-temperature coolant flow control on the temperature of the tested fuel cell during the low-temperature start-up test. It can more directly and clearly obtain the intuitive impact of low-temperature coolant flow control and the temperature of the tested fuel cell on the operation of the tested fuel cell during the low-temperature start-up test. The low-temperature start-up strategy of the tested fuel cell can be determined through test results and test data analysis.

[0061] Through the above step S102, the flow of the coolant in the thermal management subsystem is controlled according to the predetermined temperature control gradient, wherein the thermal management subsystem is arranged inside the fuel cell; step S104, the target temperature data and electrical performance data of the fuel cell during the startup process are obtained, wherein the target temperature data at least includes the temperature data of the stack area in the fuel cell; step S106, based on the flow data of the coolant, the electrical performance data of the fuel cell and the target temperature data, the startup data of the fuel cell during the startup process is determined. The purpose of accurately controlling and optimizing the cold start process of the fuel cell is achieved, and the technical effect of improving the startup test of the fuel cell is realized, thereby solving the technical problem that the startup test range is limited in the related art, resulting in unsatisfactory battery data collection efficiency.

[0062] A fuel cell startup data acquisition system is also provided in an embodiment of the present application. The fuel cell startup data acquisition system provided in an embodiment of the present application is introduced below.

[0063] Figure 2 is a principle block diagram of an optional fuel cell startup data acquisition system provided according to an embodiment of the present application, such as Figure 2 As shown, the system includes: a thermal management subsystem 202, a controller 204, wherein the thermal management subsystem 202 includes a two-way valve 2022 with an adjustable opening, a temperature sensor 2024, and a flow meter 2026, the flow meter 2026 is used to obtain the flow data of the coolant in the thermal management subsystem 202, and the temperature sensor 2024 is used to obtain the target temperature data, and the target temperature data at least includes the temperature data of the stack area in the fuel cell;

[0064] A two-way valve 2022, used to control the flow of coolant in the thermal management subsystem 202 according to a predetermined temperature control gradient, wherein the thermal management subsystem 202 is disposed inside the fuel cell;

[0065] The controller 204 is connected to the two-way valve 2022 and is used to obtain the target temperature data and electrical performance data of the fuel cell during the startup process; based on the flow data, the electrical performance data and the target temperature data of the fuel cell, the startup data of the fuel cell during the startup process is determined.

[0066] In a fuel cell startup data acquisition system provided in an embodiment of the present application, a thermal management subsystem 202 and a controller 204 are provided, wherein the thermal management subsystem 202 includes a two-way valve 2022 with an adjustable opening, a temperature sensor 2024, and a flow meter 2026, the flow meter 2026 is used to obtain flow data of the coolant in the thermal management subsystem 202, and the temperature sensor 2024 is used to obtain target temperature data, the target temperature data at least includes temperature data of the stack area in the fuel cell; the two-way valve 2022 is used to control the flow of the coolant in the thermal management subsystem 202 according to a predetermined temperature control gradient, wherein the thermal management subsystem 202 is arranged inside the fuel cell; the controller 204 is connected to the two-way valve 2022, and is used to obtain target temperature data and electrical performance data of the fuel cell during the startup process; based on the flow data, as well as the electrical performance data and target temperature data of the fuel cell, the startup data of the fuel cell during the startup process is determined. The purpose of accurately controlling and optimizing the cold start process of the fuel cell is achieved, the technical effect of improving the fuel cell startup test is realized, and the technical problem existing in the related technology that the startup test range is limited and the battery data collection efficiency is not ideal is solved.

[0067] As an optional embodiment, the system further includes a cooling subsystem, which is connected to the thermal management subsystem via a three-way valve group.

[0068] It can be understood that the connection mechanism between the cooling subsystem and the thermal management subsystem is to achieve fluid communication and separation between the two subsystems through a set of three-way valves (such as two three-way valves). In the preparation stage before cold start, the coolant in the cooling subsystem will be adjusted to a low temperature far below room temperature, and the coolant will be controlled by the three-way valve to exchange heat with the coolant in the thermal management subsystem. When the coolant in the rapid cooling subsystem reaches a predetermined low temperature, the three-way valve is adjusted to a specific position so that the low-temperature coolant can enter the thermal management subsystem, exchange heat with the coolant therein, and quickly reduce the temperature of the fuel cell. Once the fuel cell reaches the predetermined low-temperature starting condition, the three-way valve will be adjusted again to cut off the connection between the cooling subsystem and the thermal management subsystem to prevent the supercooled liquid from causing further cooling to the fuel cell being cold started, thereby ensuring precise control of the cold start process.

[0069] Optionally, the three-way valve may be an electronically controlled three-way valve.

[0070] As an optional embodiment, there are multiple temperature sensors, and the multiple temperature sensors are respectively arranged at the edge of the fuel cell stack in the stacking direction of the fuel cell stack, the center of the fuel cell stack, and the current collector of the fuel cell.

[0071] It can be understood that setting multiple temperature sensors at different positions of the fuel cell stack can realize multi-point real-time detection of the stack temperature, which helps to more accurately grasp the internal heat distribution of the fuel cell. The temperature sensor at the edge can detect the temperature at the edge of the stack, understand the edge effect and its impact on the electrochemical reaction, and the sensor at the center can reflect the temperature changes in the core area of ​​the stack, which is the key to evaluating the overall thermal state of the battery. The sensor on the current collector can detect the first-line temperature of the coolant in contact with the stack to understand the heat exchange efficiency of the coolant. Through multi-point temperature detection, the system can detect the temperature difference inside the stack in time, which helps to improve the tracking ability of temperature detection and reduce the lag of temperature detection by adjusting the coolant flow and heating strategy.

[0072] Based on the above embodiments and optional embodiments, the present application proposes an optional implementation mode: Figure 3 is a schematic structural diagram of an optional fuel cell startup data acquisition system provided according to an embodiment of the present application, such as Figure 3 As shown, it is mainly divided into three parts: rapid cooling subsystem and thermal management subsystem. The rapid cooling subsystem includes a compressor, a condenser, an evaporator, pipelines, refrigerant, electrical equipment, a control unit, a heat exchange device, a three-way valve, pipelines, a temperature sensor, a water pump and a coolant.

[0073] The thermal management subsystem includes: a water pump, an electric three-way valve 1, an electric three-way valve 2 (where ①, ②, and ③ represent the three directions of the three-way valve, respectively), a two-way valve with adjustable opening, a flow meter, a temperature sensor, a control unit, a heat dissipation device, a pipeline, a water storage device, and a coolant.

[0074] The fuel cell is also equipped with a temperature detection subsystem. Figure 4 FIG. 1 is a schematic diagram of temperature setting of an optional fuel cell startup data acquisition system provided in an embodiment of the present application, such as Figure 4 As shown, it is composed of several groups of thermal physical quantity sensors with tiny structures and control units. It is installed at the edge positions on both sides along the stacking direction of the tested fuel cell, the middle area position, and in the embedded structure of the current collector components on both sides of the tested fuel cell. Figure 4 The thermal physical quantity sensors 1-5 are shown in the figure, wherein the thermal physical quantity sensor 1 is arranged on the measured fuel cell current collector 1, the thermal physical quantity sensor 2 is arranged on the edge battery 1, the thermal physical quantity sensor 3 is arranged in the middle area, the thermal physical quantity sensor 4 is arranged on the edge battery 2, and the thermal physical quantity sensor 5 is arranged on the measured fuel cell current collector 2. The collected temperature data will be transmitted back to the control unit. Figure 5 is a rendering of an optional fuel cell startup data acquisition method provided in an embodiment of the present application, such as Figure 5As shown, by combining the thermal physical quantity sensor with the temperature sensor in the thermal management subsystem, the collected temperature data has better accuracy, which is conducive to a closer fit with the actual temperature of the fuel cell being tested.

[0075] Figure 6 is a schematic flow chart of an optional fuel cell startup data acquisition method provided in an embodiment of the present application, such as Figure 6 As shown, it includes two parts: the preparation stage before the cold start test and the data acquisition stage. First, according to the target temperature of the low-temperature start test (such as -15°C), the purge preparation before cooling the fuel cell under test is completed. Set the test target temperature and start the rapid cooling subsystem. When the rapid cooling subsystem is running, the coolant in the pipeline flows through the evaporator of the refrigeration unit to achieve rapid temperature reduction. The control unit controls the operation of the water pump of the rapid cooling subsystem, so that the coolant after cooling through the evaporator flows through the pipeline and the heat exchange device, and controls the coolant temperature in the rapid cooling subsystem according to the built-in algorithm.

[0076] When it is detected that the coolant temperature in the rapid cooling subsystem has not reached the test target temperature, the electric three-way valve 1 and the electric three-way valve 2 in the thermal management subsystem are kept in a state of completely short-circuiting the fuel cell under test ( Figure 3 The electric three-way valves 1 and 2 are both in the ①② flow state). Until the coolant temperature in the rapid cooling subsystem reaches the test target temperature, the electric three-way valves 1 and 2 in the thermal management subsystem are switched to the state of connecting the heat exchange device and the fuel cell under test ( Figure 3 The electric three-way valves 1 and 2 are in the ①③ flow state) and the thermal management subsystem pump 2 is running. In the rapid cooling subsystem during this operation, the cooled low-temperature coolant exchanges heat with the relatively high-temperature coolant in the thermal management subsystem through the heat exchange device, so that the temperature of the relatively high-temperature coolant in the thermal management subsystem is rapidly reduced. The control unit controls the operation of the water pump in the thermal management subsystem, so that the cooled low-temperature coolant flows through the fuel cell under test and other devices in the thermal management subsystem, so as to achieve rapid cooling of the fuel cell under test and the thermal management subsystem.

[0077] When the temperature of the temperature sensor 2 of the thermal management subsystem reaches the test target temperature and stabilizes for a period of time (such as 10 minutes), the electric three-way valves 1 and 2 in the thermal management subsystem switch to the state of the short-circuit heat exchange device ( Figure 2 The electric three-way valve is in the ②③ flow state). So far, the preliminary preparation test of the low-temperature start-up test is completed, and the next step is to start the test.

[0078] Through this implementation, the time required for the preliminary preparation test of the low-temperature start-up test can be greatly shortened, the test efficiency can be improved, and the development cycle can be shortened. The preliminary preparation test will be shortened from at least 12 hours of static standing required in the relevant technology to tens of minutes. The shortened time of the preliminary preparation test depends on the component selection of the test system of this implementation.

[0079] After completing the preliminary preparations for cold start, cold start control can be executed to collect data. The control unit controls the water pump of the thermal management subsystem to run at a certain speed, and then adjusts the opening of the adjustable two-way valve from closed to fully open, so that the coolant flow of the thermal management subsystem can cover the range of small flow close to zero to large flow, breaking through the minimum flow limit of the system architecture of the common low-temperature start thermal management test bench. At the same time, the control unit receives the flow information fed back by the flow meter in the thermal management subsystem to detect the flow.

[0080] The temperature detection subsystem, combined with the wider flow control and flow detection of the thermal management subsystem, can more directly and clearly obtain the intuitive impact of low-temperature coolant flow control on the temperature of the fuel cell under test during the low-temperature start-up test. It can more directly and clearly obtain the intuitive impact of low-temperature coolant flow control on the temperature of the fuel cell under test and the operation of the fuel cell under test during the low-temperature start-up test. The test results and test data analysis can help to formulate or optimize the low-temperature start-up strategy of the fuel cell under test.

[0081] The optional implementation method described above can achieve at least the following effects: effectively shorten the preparation time for a single low-temperature start test, improve test efficiency, reduce test time costs, and accelerate development progress. It can achieve more accurate detection of the fuel cell temperature during the low-temperature start test, improve the hysteresis of the detected temperature, and reduce the deviation between the detected temperature and the actual temperature of the fuel cell. It can achieve a wider range of fuel cell coolant flow during the low-temperature start test, which is conducive to the wider implementation of low-temperature start tests and the formulation and optimization of strategies.

[0082] It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and that, although a logical order is shown in the flowcharts, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0083] In this embodiment, a fuel cell startup data acquisition device is also provided, which is used to implement the above-mentioned embodiments and preferred implementations, and the descriptions that have been made will not be repeated. As used below, the terms "module" and "device" can implement a combination of software and / or hardware for a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0084] According to an embodiment of the present application, a device embodiment for implementing a method for acquiring startup data of a fuel cell is also provided. Figure 7 is a schematic diagram of a fuel cell startup data acquisition device according to an embodiment of the present application, such as Figure 7 As shown, the above fuel cell startup data acquisition device includes: a flow control module 702, a detection module 704, and a data acquisition module 706. The device is described below.

[0085] A flow control module 702, used to control the flow of the coolant in the thermal management subsystem according to a predetermined temperature control gradient, wherein the thermal management subsystem is disposed inside the fuel cell;

[0086] The detection module 704 is connected to the flow control module 702 and is used to obtain the target temperature data and electrical performance data of the fuel cell during the startup process, wherein the target temperature data at least includes the temperature data of the stack area in the fuel cell;

[0087] The data acquisition module 706 is connected to the detection module 704 and is used to determine the startup data of the fuel cell during the startup process based on the flow data of the coolant, the electrical performance data of the fuel cell and the target temperature data.

[0088] In a fuel cell startup data acquisition device provided in an embodiment of the present application, a flow control module 702 is provided to control the flow of the coolant in the thermal management subsystem according to a predetermined temperature control gradient, wherein the thermal management subsystem is provided inside the fuel cell; a detection module 704 is connected to the flow control module 702, and is used to obtain the target temperature data and electrical performance data of the fuel cell during the startup process, wherein the target temperature data at least includes the temperature data of the stack area in the fuel cell; a data acquisition module 706 is connected to the detection module 704, and is used to determine the startup data of the fuel cell during the startup process based on the flow data of the coolant, the electrical performance data of the fuel cell and the target temperature data. The purpose of accurately controlling and optimizing the cold start process of the fuel cell is achieved, and the technical effect of improving the startup test of the fuel cell is realized, thereby solving the technical problem that the startup test range is limited in the related art, resulting in unsatisfactory battery data collection efficiency.

[0089] It should be noted that the above modules can be implemented by software or hardware. For example, for the latter, it can be implemented in the following ways: the above modules can be located in the same processor; or the above modules can be located in different processors in any combination.

[0090] It should be noted that the above-mentioned flow control module 702, detection module 704, and data acquisition module 706 correspond to steps S102 to S106 in the embodiment, and the examples and application scenarios implemented by the above-mentioned modules and corresponding steps are the same, but are not limited to the contents disclosed in the above-mentioned embodiment. It should be noted that the above-mentioned modules as part of the device can be run in a computer terminal.

[0091] It should be noted that the optional or preferred implementation of this embodiment can refer to the relevant description in the embodiment, which will not be repeated here.

[0092] The above-mentioned fuel cell startup data acquisition device may also include a processor and a memory. The flow control module 702, the detection module 704, the data acquisition module 706, etc. are all stored in the memory as program units, and the processor executes the above-mentioned program units stored in the memory to realize corresponding functions.

[0093] The processor includes a kernel, which retrieves the corresponding program unit from the memory. There can be one or more kernels. The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one storage chip.

[0094] An embodiment of the present application provides a non-volatile storage medium on which a program is stored. When the program is executed by a processor, a method for acquiring fuel cell startup data is implemented.

[0095] The embodiment of the present application provides an electronic device, which includes a processor, a memory, and a program stored in the memory and can be run on the processor. When the processor executes the program, the following steps are implemented: according to a predetermined temperature control gradient, the flow rate of the coolant in the thermal management subsystem is controlled, wherein the thermal management subsystem is arranged inside the fuel cell; the target temperature data and electrical performance data of the fuel cell during the startup process are obtained, wherein the target temperature data at least includes the temperature data of the stack area in the fuel cell; based on the flow data of the coolant, and the electrical performance data and target temperature data of the fuel cell, the startup data of the fuel cell during the startup process is determined. The device in this article can be a server, a PC, etc.

[0096] The present application also provides a computer program product, which, when executed on a data processing device, is suitable for executing an initialization program having the following method steps: controlling the flow of coolant in a thermal management subsystem according to a predetermined temperature control gradient, wherein the thermal management subsystem is arranged inside a fuel cell; obtaining target temperature data and electrical performance data of the fuel cell during the startup process, wherein the target temperature data at least includes temperature data of the stack area in the fuel cell; and determining the startup data of the fuel cell during the startup process based on the flow data of the coolant, as well as the electrical performance data and target temperature data of the fuel cell.

[0097] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0098] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0099] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0100] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1The steps for the functions specified in one or more boxes.

[0101] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0102] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0103] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0104] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0105] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0106] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A method for acquiring fuel cell startup data, characterized in that: include: Controlling the flow rate of a coolant in a thermal management subsystem according to a predetermined temperature control gradient, wherein the thermal management subsystem is disposed inside a fuel cell; Acquiring target temperature data and electrical performance data of the fuel cell during startup, wherein the target temperature data at least includes temperature data of a stack region in the fuel cell; Based on the flow data of the coolant, and the electrical performance data and target temperature data of the fuel cell, the startup data of the fuel cell during the startup process is determined.

2. The method according to claim 1, characterized in that: Before controlling the flow rate of the coolant in the thermal management subsystem according to the predetermined temperature control gradient, the method further includes: Controlling the thermal management subsystem to be connected to a cooling subsystem outside the fuel cell; Starting heat exchange processing between the coolant of the thermal management subsystem and the coolant of the temperature reduction subsystem to obtain first temperature data of the fuel cell, wherein the coolant in the temperature reduction subsystem is pre-processed to a predetermined temperature threshold; Based on the first temperature data, determining a first holding time for the fuel cell to maintain the predetermined temperature threshold; When the first holding time reaches a first predetermined time threshold, the thermal management subsystem is controlled to be disconnected from the cooling subsystem.

3. The method according to claim 2, characterized in that Before controlling the thermal management subsystem to connect with the cooling subsystem outside the fuel cell, the method further includes: Controlling the coolant in the cooling subsystem to the predetermined temperature threshold; Determine a second holding time length during which the coolant in the cooling subsystem keeps meeting the predetermined temperature threshold; When the second holding time reaches a second predetermined time threshold, the thermal management subsystem is allowed to be connected to the temperature reduction subsystem.

4. The method according to claim 1, characterized in that The thermal management subsystem is provided with a two-way valve with an adjustable opening, and the flow rate of the coolant in the thermal management subsystem is controlled according to a predetermined temperature control gradient, including: Determining the opening of the two-way valve based on the temperature control gradient; According to the opening degree, the flow rate of the coolant in the thermal management subsystem is controlled.

5. The method according to any one of claims 1 to 4, characterized in that: The target temperature data also includes: temperature data of the edge position of the fuel cell stack in the stacking direction of the fuel cell stack, temperature data of the center position of the fuel cell stack, and current collector temperature data of the fuel cell.

6. A fuel cell startup data acquisition system, characterized in that: include: A thermal management subsystem, a controller, wherein the thermal management subsystem includes a two-way valve with an adjustable opening, a temperature sensor, and a flow meter, wherein the flow meter is used to obtain flow data of a coolant in the thermal management subsystem, and the temperature sensor is used to obtain target temperature data, wherein the target temperature data includes at least temperature data of a stack region in a fuel cell; The two-way valve is used to control the flow of coolant in the thermal management subsystem according to a predetermined temperature control gradient, wherein the thermal management subsystem is arranged inside the fuel cell; The controller is connected to the two-way valve and is used to obtain the target temperature data and electrical performance data of the fuel cell during the startup process; based on the flow data, the electrical performance data and target temperature data of the fuel cell, the startup data of the fuel cell during the startup process is determined.

7. The system according to claim 6, characterized in that The system further comprises a cooling subsystem, and the cooling subsystem is connected to the thermal management subsystem via a three-way valve group.

8. The system according to claim 6, characterized in that There are multiple temperature sensors, which are respectively arranged at the edge of the fuel cell stack in the stacking direction of the fuel cell stack, the center of the fuel cell stack, and the current collector of the fuel cell.

9. A fuel cell startup data acquisition device, characterized in that: include: A flow control module, used to control the flow of coolant in a thermal management subsystem according to a predetermined temperature control gradient, wherein the thermal management subsystem is disposed inside the fuel cell; A detection module, used to obtain target temperature data and electrical performance data of the fuel cell during startup, wherein the target temperature data at least includes temperature data of a stack region in the fuel cell; The data acquisition module is used to determine the startup data of the fuel cell during the startup process based on the flow data of the coolant, the electrical performance data and the target temperature data of the fuel cell.

10. An electronic device, characterized in that: include: One or more processors and a memory, wherein the memory is used to store one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors implement the fuel cell startup data acquisition method described in any one of claims 1 to 5.

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