Residual electric quantity detection method and device, fuel cell system, vehicle and medium

Abstract

The invention provides a residual electric quantity detection method and device, a fuel cell system, a vehicle and a medium, the method is applied to the field of fuel cell vehicles, and the method comprises the following steps: detecting actual gas pressure and actual gas temperature of a fuel storage container in a fuel storage system; if the actual gas pressure is less than the correction threshold value, correcting the actual gas pressure based on a linear correction relationship of the gas pressure in the fuel storage container; and calculating the residual electric quantity of the fuel storage system based on the corrected actual gas pressure and the corrected actual gas temperature. According to the method, the gas pressure of the fuel storage container at low pressure can be corrected by using the linear correction relation, and the residual electric quantity of the fuel storage container is detected based on the corrected accurate gas pressure, so that the detection accuracy of the residual electric quantity is ensured, and the detection precision of the residual electric quantity is improved. Therefore, the problem of abnormal parking caused by the fact that the fuel storage system is still not used up when the gas is used up can be avoided, and the use experience of a user is improved.

Description

Technical Field

[0001] The present application relates to the field of fuel cell vehicles, and more specifically, to a method and device for detecting remaining power in the field of fuel cell vehicles, a fuel cell system, a vehicle, and a medium. Background Art

[0002] The fuel cell system is similar to the fuel tank of a non-fuel cell vehicle. Taking the on-board hydrogen storage system as an example, it includes components such as hydrogen storage cylinders, cylinder valves (including temperature sensors), pressure reducing valves, hydrogen storage system controllers and pressure sensors, and is responsible for the storage, filling and supply of hydrogen. Therefore, it is very necessary to detect and correct the hydrogen SOC (state of charge) of the on-board hydrogen storage system.

[0003] In the related art, a solution that relies on a pressure sensor to calculate the SOC can be used. After collecting temperature and pressure data, the hydrogen temperature, pressure and density meter uses the density and the rated full-bottle hydrogen density to complete the SOC calculation.

[0004] However, in the related art, during the normal driving of a fuel cell vehicle, due to the measurement error of the high-pressure sensor at low pressure, it is easy for the fuel cell to actually run out of hydrogen and shut down, but the hydrogen storage system shows that there is still available hydrogen, causing the fuel cell stack to shut down abnormally, and then making it impossible to start the vehicle normally the next time it is started. Summary of the invention

[0005] The present application provides a remaining power detection method, device, fuel cell system, vehicle and medium. The method can use a linear correction relationship to correct the gas pressure of a fuel storage container at low pressure to obtain an accurate gas pressure, so that the remaining power of the fuel storage container can be detected based on the corrected accurate gas pressure, thereby ensuring the accuracy of the remaining power detection. Furthermore, since the accuracy of the remaining power detection is improved, the problem of abnormal parking caused by the exhaustion of gas but the fuel storage system still showing that it is not exhausted can be avoided, thereby improving the user experience.

[0006] In a first aspect, a remaining power detection method is provided, the method comprising: detecting an actual gas pressure and an actual gas temperature of a fuel storage container in a fuel storage system; if the actual gas pressure is less than a correction threshold, correcting the actual gas pressure based on a linear correction relationship of the gas pressure in the fuel storage container; and calculating the remaining power of the fuel storage system based on the corrected actual gas pressure and the actual gas temperature.

[0007] Through the above technical scheme, the embodiment of the present application can use a linear correction relationship to correct the gas pressure of the fuel storage container when it is at low pressure to obtain an accurate gas pressure, so that the remaining power of the fuel storage container can be detected based on the corrected accurate gas pressure, thereby ensuring the accuracy of the remaining power detection. Furthermore, since the accuracy of the remaining power detection is improved, it is possible to avoid the problem of abnormal parking due to the exhaustion of gas but the fuel storage system still showing that it is not exhausted, thereby improving the user experience.

[0008] In combination with the first aspect, in some possible implementations, before correcting the actual gas pressure based on the linear correction relationship of the gas pressure in the fuel storage container, it includes: obtaining the gas characteristics in the fuel storage container; and calibrating the linear correction relationship of the gas pressure based on the gas characteristics.

[0009] Through the above technical solution, the embodiment of the present application can calibrate the linear correction relationship of the gas pressure according to the gas characteristics of the fuel, so that the linear correction relationship corresponds to the gas characteristics, thereby improving the calculation accuracy and making the calculation result more reliable.

[0010] In combination with the first aspect and the above-mentioned implementation methods, in some possible implementation methods, after correcting the actual gas pressure based on the linear correction relationship of the gas pressure in the fuel storage container, it also includes: identifying whether the actual gas pressure is greater than the end threshold; if the actual gas pressure is greater than the end threshold, ending the correction of the actual gas pressure; otherwise continuing to correct the actual gas pressure.

[0011] Through the above technical solution, the embodiment of the present application can determine whether the actual gas pressure currently detected is greater than the end threshold. When it is greater than the end threshold, the correction of the actual pressure is ended, otherwise it is stopped; thereby avoiding abnormal fluctuations in pressure SOC from causing trouble to the user.

[0012] In combination with the first aspect and the above implementations, in some possible implementations, the end threshold is greater than the correction threshold.

[0013] In combination with the first aspect and the above-mentioned implementations, in some possible implementations, it also includes: obtaining a critical pressure at which the gas in the fuel storage container can be regarded as an ideal gas; and setting the correction threshold and the end threshold according to the critical pressure.

[0014] Through the above technical solution, the embodiment of the present application can select appropriate correction thresholds and end thresholds according to the critical pressure of the current gas pressure, so that the hysteresis control corresponds to the current gas state, meets actual control needs, and improves control rationality and control effect.

[0015] In combination with the first aspect and the above-mentioned implementation methods, in some possible implementation methods, the calculation of the remaining power of the fuel storage system based on the corrected actual gas pressure and the actual gas temperature includes: obtaining a correspondence table of gas pressure, gas temperature and gas density; determining the gas density based on the corrected actual gas pressure, the actual gas temperature and the correspondence table, and calculating the remaining power based on the gas density and the rated density of the gas in the fuel storage container.

[0016] Through the above technical solution, the embodiment of the present application can calculate the remaining power based on the corrected actual gas pressure and the actual gas temperature. Since the corrected actual gas pressure is used, the calculation result is more accurate, so that the fuel storage system display result is more reliable, avoiding abnormal parking situations and improving the user experience.

[0017] In a second aspect, a remaining power detection device is provided, which includes: a detection module for detecting the actual gas pressure and the actual gas temperature of a fuel storage container in a fuel storage system; a correction module for correcting the actual gas pressure based on a linear correction relationship of the gas pressure in the fuel storage container when the actual gas pressure is less than a correction threshold; and a calculation module for calculating the remaining power of the fuel storage system based on the corrected actual gas pressure and the actual gas temperature.

[0018] In a third aspect, a fuel cell system is provided, comprising: a fuel storage system of the fuel cell; a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the remaining power detection method as described in the above embodiment.

[0019] In a fourth aspect, a vehicle is provided, comprising the fuel cell system as described in the above embodiment.

[0020] In a fifth aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed, the method described in the above embodiment is implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of hydrogen density calculation of hydrogen storage system in related technology;

[0022] Figure 2 is a schematic flow chart of a remaining power detection method according to an embodiment of the present application;

[0023] Figure 3 is a schematic diagram of the calculation of the corrected hydrogen density of the hydrogen storage system of an embodiment of the present application;

[0024] Figure 4It is a schematic diagram of a remaining power detection device according to an embodiment of the present application. DETAILED DESCRIPTION

[0025] The technical solution in the present application will be described clearly and in detail below in conjunction with the accompanying drawings. In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B: "and / or" in the text is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0026] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as suggesting or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0027] The fuel cell system is similar to the fuel tank of a non-fuel cell vehicle. Taking the on-board hydrogen storage system as an example, it includes components such as hydrogen storage cylinders, cylinder valves (including temperature sensors), pressure reducing valves, hydrogen storage system controllers and pressure sensors, and is responsible for the storage, filling and supply of hydrogen; therefore, it is very necessary to detect and correct the hydrogen SOC of the on-board hydrogen storage system.

[0028] In the related art, a solution for calculating SOC by using a pressure sensor can be used, such as Figure 1 As shown, after collecting the temperature and pressure data, the hydrogen temperature, pressure and density table uses the density and the rated full tank hydrogen density to complete the SOC calculation.

[0029] However, in the related art, the hydrogen SOC of the hydrogen storage system is calculated by looking up the hydrogen temperature-pressure-density table through the hydrogen bottle pressure and hydrogen bottle temperature, and the hydrogen bottle pressure is determined by measuring the high-pressure pipeline pressure on the main pipeline downstream of the bottle valve; during the normal driving of fuel cell vehicles, due to the measurement error of the high-pressure sensor at low pressure, it is easy for the fuel cell to shut down due to actual depletion of hydrogen, but the hydrogen storage system shows that there is still available hydrogen, causing the fuel cell stack to shut down abnormally, and then the vehicle cannot be started normally the next time it is started.

[0030] In view of the above-mentioned background technical problems, an embodiment of the present application can provide a remaining power detection method. The remaining power detection method, device, fuel cell system, vehicle and medium of the embodiment of the present application are described below in conjunction with the accompanying drawings.

[0031] Specifically, Figure 2It is a schematic flow chart of a remaining power detection method provided in an embodiment of the present application.

[0032] For example, Figure 2 As shown, the remaining power detection method includes the following steps:

[0033] Step S101 , detecting the actual gas pressure and actual gas temperature of a fuel storage container in a fuel storage system.

[0034] It is understandable that the embodiment of the present application can detect the actual gas pressure and actual gas temperature of the fuel storage container in the fuel storage system, wherein the embodiment of the present application can use at least one method to complete the detection, such as Figure 1 As shown, the actual gas pressure can be read by a high-pressure pressure sensor, etc.; in the following embodiments, the fuel storage container is a high-pressure hydrogen storage bottle, and the actual gas pressure is read by a high-pressure pressure sensor.

[0035] Step S102 : if the actual gas pressure is less than the correction threshold, the actual gas pressure is corrected based on the linear correction relationship of the gas pressure in the fuel storage container.

[0036] The correction threshold can be set according to actual conditions and is not specifically limited thereto.

[0037] It is understandable that when the actual gas pressure is less than the correction threshold, the embodiment of the present application may deem that the current SOC needs to be corrected, thereby correcting the actual gas pressure based on the linear relationship of the gas pressure in the fuel storage container.

[0038] In the embodiment of the present application, before correcting the actual gas pressure based on the linear correction relationship of the gas pressure in the fuel storage container, it includes: obtaining the gas characteristics in the fuel storage container; and calibrating the linear correction relationship of the gas pressure based on the gas characteristics.

[0039] It is understandable that the larger the range of the high-pressure pressure sensor, the worse the accuracy. The embodiment of the present application can calibrate the linear correction relationship of the gas pressure according to the characteristics of the gas in the fuel storage container, so that the linear correction relationship corresponds to the characteristics of the gas in the storage, thereby making the calculation result more reliable and the correction more accurate.

[0040] Specifically, the hydrogen storage system composed of several gas cylinders / bottle valves connected in parallel is used as the basis for the description. The hydrogen storage system can supply hydrogen to the fuel cell system by regulating the pressure through a pressure reducing valve, and the hydrogen SOC of the hydrogen storage system can be calculated in real time;

[0041] Hydrogen SOC = ρ(P,T 平均 ) / ρ(nominal pressure 35Mpa or 70MPa, 15℃),

[0042] Among them, P refers to the high pressure of the hydrogen storage system, T 平均 Refers to the average temperature of each hydrogen bottle, T 平均 =(T1+T2+…+Tn) / n. The embodiment of the present application can add a linear correction to the output pressure during the driving of the fuel cell vehicle:

[0043] y=ax+b,

[0044] Among them, y is the pressure after correction, x is the pressure before correction; a and b are correction coefficients, and the a and b values ​​can be corrected through calibration, that is, the embodiment of the present application can calibrate the linear correction relationship of the gas pressure according to the characteristics of the gas in the fuel storage container.

[0045] In an embodiment of the present application, after correcting the actual gas pressure based on the linear correction relationship of the gas pressure in the fuel storage container, it also includes: identifying whether the actual gas pressure is greater than the end threshold; if the actual gas pressure is greater than the end threshold, then ending the correction of the actual gas pressure; otherwise, continuing to correct the actual gas pressure.

[0046] Among them, the end threshold is greater than the correction threshold.

[0047] It can be understood that the embodiment of the present application can use the actual gas pressure to determine whether to end the correction. When the actual gas pressure is greater than the end threshold, it is considered that the correction can be stopped at this time. When the actual gas pressure is less than the end threshold, the gas pressure continues to be corrected.

[0048] Specifically, if Figure 3 As shown, the embodiment of the present application can determine whether to enter hysteresis control after pressure correction, and use hysteresis control to avoid abnormal SOC jumps at the critical pressure point, thereby avoiding causing trouble to the user; wherein, when it is recognized that the actual gas pressure is within the hysteresis control interval, that is, when the actual gas pressure is greater than the correction threshold and less than the end threshold, the embodiment of the present application maintains the original state unchanged; when it is recognized that the actual gas pressure is greater than the end threshold, the embodiment of the present application ends the correction of the actual gas pressure. Among them, the end threshold can be set according to the actual situation, and the embodiment of the present application can use at least one method to achieve the determination of the end threshold, as follows:

[0049] In an embodiment of the present application, the remaining power detection method also includes: obtaining a critical pressure at which the gas in the fuel storage container can be regarded as an ideal gas; and setting a correction threshold and an end threshold according to the critical pressure.

[0050] It is understandable that the critical pressure at which the gas in different fuel storage containers can be regarded as an ideal gas may be different. For example, in a high-pressure hydrogen storage bottle, when the hydrogen gas is under low pressure (<10MPa), it can be regarded as an ideal gas and the ideal state gas equation applies, that is, PV=nRT; but when the gas pressure exceeds 10MPa, the physical properties of hydrogen will deviate from the ideal gas state. Therefore, the embodiments of the present application can mainly correct the SOC calculation when it is below 10Mpa.

[0051] In order to avoid the SOC calculation mode jumping back and forth between the two modes when the gas pressure in the fuel storage container is just at the critical pressure, the embodiment of the present application can reuse the critical pressure value to determine the correction threshold and the end threshold, and use the pressure value slightly lower than the critical pressure value as the correction threshold for starting the correction, and use the pressure value slightly higher than the critical pressure value as the end threshold for ending the correction; for example, if the critical pressure value is 10MPa, the correction threshold may be 9.8MPa or 9.9MPa, etc., and the end threshold may be 10.1MPa or 10.2MPa, etc., thereby reserving a hysteresis control interval near the critical pressure value to avoid the SOC calculation mode jumping back and forth.

[0052] For example, when the internal pressure of the hydrogen bottle is lower than 10MPa during the driving of a fuel cell vehicle, the hydrogen storage system controller can use pressure correction to calculate the SOC in order to calculate the SOC more accurately, and can calibrate and optimize according to the actual system conditions. In order to make the pressure in the bottle just at 10MPa, to avoid the two SOC calculation modes jumping back and forth, affecting user use, the embodiment of the present application can add a hysteresis control with an amplitude of 0.2MPa, that is, when the high pressure drops to 9.8MPa, it switches to the pressure correction mode, and when the low pressure rises to more than 10.2MPa, it switches to the direct reading sensor pressure mode, and maintains the original state before switching the state.

[0053] Step S103, calculating the remaining power of the fuel storage system based on the corrected actual gas pressure and actual gas temperature.

[0054] It is understandable that the embodiment of the present application can calculate the remaining power of the fuel storage system by using the corrected actual gas pressure and the actual gas temperature after the actual gas pressure is corrected; wherein, the embodiment of the present application can calculate the remaining power by using at least one method:

[0055] As a possible implementation method, the remaining power of the fuel storage system is calculated based on the corrected actual gas pressure and actual gas temperature, including: obtaining a correspondence table of gas pressure, gas temperature and gas density; determining the gas density based on the corrected actual gas pressure, actual gas temperature and the correspondence table, and calculating the remaining power based on the gas density and the rated density of the gas in the fuel storage container.

[0056] It can be understood that the embodiment of the present application can look up the correspondence table of gas pressure, gas temperature and gas density, determine the corresponding gas density from the table, and use the current gas density and the rated density of the gas in the fuel storage container for calculation to obtain the remaining power of the fuel storage system.

[0057] In summary, the remaining power detection method according to the present application has at least the following advantages:

[0058] (1) The embodiment of the present application can use a linear correction relationship to correct the gas pressure of the fuel storage container when it is at low pressure to obtain an accurate gas pressure, so that the remaining power of the fuel storage container can be detected based on the corrected accurate gas pressure, thereby ensuring the accuracy of the remaining power detection. Furthermore, since the accuracy of the remaining power detection is improved, the problem of abnormal parking caused by the fuel storage system still showing that the gas is not exhausted when the gas is exhausted can be avoided, thereby improving the user experience;

[0059] (2) The embodiment of the present application can calibrate the linear correction relationship of the gas pressure according to the gas characteristics of the fuel, thereby making the linear correction relationship correspond to the gas characteristics, thereby improving the calculation accuracy and making the calculation result more reliable;

[0060] (3) The embodiment of the present application can determine whether the actual gas pressure currently detected is greater than the end threshold. If it is greater than the end threshold, the correction of the actual pressure is terminated, otherwise it is stopped; thereby avoiding abnormal fluctuations in pressure SOC causing trouble to the user;

[0061] (4) The embodiment of the present application can select a suitable correction threshold and end threshold according to the critical pressure of the current gas pressure, so that the hysteresis control corresponds to the current gas state, meets the actual control needs, and improves the control rationality and control effect;

[0062] (5) The embodiment of the present application can calculate the remaining power based on the corrected actual gas pressure and the actual gas temperature. Since the corrected actual gas pressure is used, the calculation result is more accurate, so that the fuel storage system display result is more reliable, avoiding abnormal parking situations and improving the user experience.

[0063] Figure 4 It is a structural schematic diagram of a remaining power detection device provided in an embodiment of the present application.

[0064] For example, Figure 4 As shown, the remaining power detection device 10 may include: a detection module 100 , a correction module 200 and a calculation module 300 .

[0065] Detection module 100: used to detect the actual gas pressure and actual gas temperature of the fuel storage container in the fuel storage system;

[0066] Correction module 200: used to correct the actual gas pressure based on the linear correction relationship of the gas pressure in the fuel storage container when the actual gas pressure is less than the correction threshold;

[0067] The calculation module 300 is used to calculate the remaining power of the fuel storage system based on the corrected actual gas pressure and actual gas temperature.

[0068] In the embodiment of the present application, the correction module 200 is further used to, before correcting the actual gas pressure based on the linear correction relationship of the gas pressure in the fuel storage container, include: obtaining the gas characteristics in the fuel storage container; and calibrating the linear correction relationship of the gas pressure based on the gas characteristics.

[0069] In an embodiment of the present application, the correction module 200 is further used to, after correcting the actual gas pressure based on the linear correction relationship of the gas pressure in the fuel storage container, also include: identifying whether the actual gas pressure is greater than the end threshold; if the actual gas pressure is greater than the end threshold, then ending the correction of the actual gas pressure; otherwise, continuing to correct the actual gas pressure.

[0070] In the embodiment of the present application, the end threshold is greater than the correction threshold.

[0071] In the embodiment of the present application, the remaining power detection device 10 further includes: obtaining the critical pressure at which the gas in the fuel storage container can be regarded as an ideal gas; and setting the correction threshold and the end threshold according to the critical pressure.

[0072] In an embodiment of the present application, the calculation module 300 is further used to calculate the remaining power of the fuel storage system based on the corrected actual gas pressure and actual gas temperature, including: obtaining a correspondence table of gas pressure, gas temperature and gas density; determining the gas density based on the corrected actual gas pressure, actual gas temperature and the correspondence table, and calculating the remaining power based on the gas density and the rated density of the gas in the fuel storage container.

[0073] It should be noted that the specific implementation of the remaining power detection device in the embodiment of the present application is similar to the specific implementation of the remaining power detection method. In order to reduce redundancy, it will not be repeated here.

[0074] In summary, according to the remote control remaining power detection device of the vehicle in the embodiment of the present application, a linear correction relationship can be used to correct the gas pressure of the fuel storage container when it is at low pressure to obtain an accurate gas pressure, so that the remaining power of the fuel storage container can be detected based on the corrected accurate gas pressure, thereby ensuring the accuracy of the remaining power detection. Furthermore, since the accuracy of the remaining power detection is improved, the problem of abnormal parking caused by the gas being exhausted but the fuel storage system still showing that it is not exhausted can be avoided, thereby improving the user experience.

[0075] An embodiment of the present application also provides a fuel cell system, including: a fuel storage system for the fuel cell; a memory, a processor, and a computer program stored in the memory and executable on the processor, the processor executing the program to implement a remaining power detection method as described in the above embodiment.

[0076] An embodiment of the present application also provides a vehicle, including: a fuel cell system as described in the above embodiment.

[0077] An embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the remaining power detection method as described in the above embodiment is implemented.

[0078] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0079] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0080] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A method for detecting remaining power, characterized in that: The method comprises: Detecting an actual gas pressure and an actual gas temperature of a fuel storage container in a fuel storage system; If the actual gas pressure is less than a correction threshold, correcting the actual gas pressure based on a linear correction relationship of the gas pressure in the fuel storage container; The remaining capacity of the fuel storage system is calculated based on the corrected actual gas pressure and the actual gas temperature.

2. The method according to claim 1, characterized in that Before correcting the actual gas pressure based on the linear correction relationship of the gas pressure in the fuel storage container, the method includes: obtaining gas characteristics within the fuel storage container; A linear correction relationship of the gas pressure is calibrated based on the gas characteristics.

3. The method according to claim 1, characterized in that After correcting the actual gas pressure based on the linear correction relationship of the gas pressure in the fuel storage container, the method further includes: Identify whether the actual gas pressure is greater than an end threshold; If the actual gas pressure is greater than the end threshold, then the correction of the actual gas pressure is ended; Otherwise, continue to correct the actual gas pressure.

4. The method according to claim 3, characterized in that The end threshold is greater than the correction threshold.

5. The method according to claim 3, characterized in that: Also includes: Obtain the critical pressure at which the gas in the fuel storage container can be regarded as an ideal gas; The correction threshold and the end threshold are set according to the critical pressure.

6. The method according to any one of claims 1 to 5, characterized in that: The calculating the remaining power of the fuel storage system based on the corrected actual gas pressure and the actual gas temperature includes: Obtain a corresponding relationship table of gas pressure, gas temperature and gas density; The gas density is determined based on the corrected actual gas pressure, the actual gas temperature and the corresponding relationship table, and the remaining power is calculated based on the gas density and the rated density of the gas in the fuel storage container.

7. A remaining power detection device, characterized in that: The device comprises: A detection module, used for detecting an actual gas pressure and an actual gas temperature of a fuel storage container in a fuel storage system; a correction module, configured to correct the actual gas pressure based on a linear correction relationship of the gas pressure in the fuel storage container when the actual gas pressure is less than a correction threshold; A calculation module is used to calculate the remaining power of the fuel storage system based on the corrected actual gas pressure and the actual gas temperature.

8. A fuel cell system, characterized in that: include: Fuel storage systems for fuel cells; A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the remaining power detection method according to any one of claims 1 to 6.

9. A vehicle, characterized in that: The vehicle comprises: the fuel cell system as claimed in claim 8.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed, the method according to any one of claims 1 to 6 is implemented.

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