Fast response method and apparatus for solid oxide fuel cell stacks

Abstract

The application provides a method and device for quick response of a solid oxide fuel cell stack connected with an energy storage battery, comprising: if the stack is not in a hot standby state, obtaining a difference power according to a real-time power and a required power; if the difference power is greater than 0 and the suppliable power is greater than the difference power, obtaining a first importance tag of power supplement; according to the first importance tag, connecting the energy storage battery to output the difference power to an external load at a preset required power change time point until the difference power is 0; if the difference power is less than 0 and the absorbable power is greater than the difference power, obtaining a second importance tag of power absorption; according to the second importance tag, connecting the energy storage battery to absorb the difference power at a preset required power change time point until the difference power is 0. The above method realizes quick response of the stack to the required power change of the external load.

Description

Technical Field

[0001] This invention relates to the field of fuel cells, and more specifically to a fast response method and apparatus for solid oxide fuel cell stacks. Background Technology

[0002] A solid oxide fuel cell stack is a device that converts the chemical energy of fuel into electrical energy. It consists of multiple solid oxide fuel cells stacked together, improving voltage and power output while enhancing fuel utilization efficiency. The stack can achieve efficient electrochemical reactions at high temperatures, improving system performance, and can be flexibly stacked and deployed to meet different needs. Solid oxide fuel cell stacks have important applications in the clean energy field, including but not limited to combined heat and power (CHP), distributed generation, grid frequency regulation and peak shaving, and renewable energy power consumption, and are one of the effective ways to achieve efficient utilization of green energy.

[0003] Existing solid oxide fuel cell stacks typically operate at temperatures between 500℃ and 1000℃, with varying output power at different temperatures. In practical applications, the stack's power output often needs to be adaptively adjusted based on external load conditions. Due to the complexity and frequent changes in external load environments, the stack needs to respond with varying power outputs. However, based on the high-temperature electrochemical reaction mechanism of the stack, within a safe operating temperature range, increasing the stack's output power requires increasing the stack's temperature, and conversely, decreasing the stack's output power requires decreasing the stack's temperature.

[0004] However, the high-temperature operation of solid oxide fuel cell stacks causes thermal inertia, which slows down the temperature regulation speed, typically requiring tens of seconds or minutes to fully respond to the power demand of external loads. The inability of solid oxide fuel cell stacks to output the required power from external loads within the temperature regulation time limits their application in scenarios with complex transient load changes. Summary of the Invention

[0005] Based on this, the present invention provides a fast response method and apparatus for solid oxide fuel cell stacks, which introduces an energy storage battery. When the solid oxide fuel cell stack cannot respond quickly to changes in external load, the supplementary power or absorbed power of the energy storage battery is used to adjust the load, thereby achieving the effect of fast response to changes in external load.

[0006] In a first aspect, the present invention provides a fast response method for a solid oxide fuel cell stack, wherein the solid oxide fuel cell stack is connected to an energy storage battery, the method comprising:

[0007] Monitor the operating status and real-time power of the solid oxide fuel cell stack, the power demand of the external load, and the supplemental and absorbable power of the energy storage battery;

[0008] Determine whether the solid oxide fuel cell stack is in a hot standby state based on the described operating status;

[0009] If the solid oxide battery stack is not in a hot standby state, the differential power is obtained based on the real-time power and the required power.

[0010] If the difference in power is greater than 0, and the supplementable power is greater than the difference in power, obtain the first importance label for power supplementation;

[0011] Based on the first importance tag, the energy storage battery is connected to output differential power to the external load at the preset time point of power demand change, until the differential power is 0;

[0012] If the differential power is less than 0 and the absorbable power is greater than the differential power, obtain a second importance label for power absorption;

[0013] Based on the second importance label, the energy storage battery is connected at the preset time point of power demand change to absorb the difference in power until the difference in power is 0.

[0014] Furthermore, the method also includes: if the solid oxide battery stack is in a hot standby state and the absorbable power of the energy storage battery is greater than 0, switching the battery stack in the hot standby state to an operating state and outputting power to the energy storage battery until the absorbable power of the energy storage battery is 0 or the battery stack outputs power to an external load.

[0015] Furthermore, the step of connecting the energy storage battery to output differential power to the external load at preset time points of demand power change based on the first importance tag, until the differential power is 0, specifically involves:

[0016] When the first importance tag is a first-order temperature rise tag, when the solid oxide battery stack is connected to an external load and outputs real-time power, the connected energy storage battery outputs differential power to the external load until the differential power is 0.

[0017] When the first importance tag is a second-order temperature rise tag, after the solid oxide battery stack is connected to an external load and outputs actual power for a first time period, the connected energy storage battery outputs differential power to the external load until the differential power is 0.

[0018] When the first importance tag is a third-order temperature rise tag, before the solid oxide battery stack is connected to the external load and outputs actual power for a first time period, the connected energy storage battery outputs differential power to the external load until the differential power is 0.

[0019] Furthermore, the step of connecting the energy storage battery to absorb the differential power at preset time points of demand power change based on the second importance label until the differential power is 0 specifically involves:

[0020] When the second importance label is a first-order cooling label, when the power demand of the external load decreases, the energy storage battery connects to the solid oxide fuel cell stack to absorb the difference power until the difference power is 0.

[0021] When the second importance label is a second-order cooling label, after the external load power demand decreases for a second period of time, the energy storage battery connects to the solid oxide fuel cell stack to absorb the difference power until the difference power is 0.

[0022] When the second importance label is a third-order cooling label, before the external load power demand decreases for a second time period, the energy storage battery connects to the solid oxide fuel cell stack to absorb the difference power until the difference power is 0.

[0023] Furthermore, the method also includes: when the replenishable power of the energy storage battery is greater than the power demand of the external load, and the solid oxide fuel cell stack is started by electric heating, the energy storage battery outputs the power demand to the external load, while simultaneously providing heating power to the solid oxide fuel cell stack.

[0024] In a second aspect, the present invention also provides a fast response device for a solid oxide fuel cell stack, wherein the solid oxide fuel cell stack is connected to an energy storage battery, and the device includes:

[0025] The power monitoring module is used to monitor the operating status and real-time power of the solid oxide fuel cell stack, the power demand of the external load, and the supplemental and absorbable power of the energy storage battery.

[0026] The working status acquisition module is used to determine whether the solid oxide fuel cell stack is in a hot standby state based on the working status.

[0027] The differential power calculation module is used to obtain the differential power based on the real-time power and the required power if the solid oxide battery stack is not in a hot standby state.

[0028] The first tag acquisition module is used to acquire a first importance tag for power supplementation if the difference power is greater than 0 and the supplementable power is greater than the difference power.

[0029] The power supplement module is used to connect the energy storage battery to output differential power to the external load at preset time points of demand power change based on the first importance label, until the differential power is 0;

[0030] The second tag acquisition module is used to acquire a second importance tag for power absorption if the difference power is less than 0 and the absorbable power is greater than the difference power.

[0031] The power absorption module is used to connect to the energy storage battery at preset power demand change time points according to the second importance label to absorb the difference power until the difference power is 0.

[0032] Furthermore, the device also includes a standby absorption module, used to switch the battery stack in the hot standby state to the working state and output power to the energy storage battery if the solid oxide battery stack is in a hot standby state and the absorbable power of the energy storage battery is greater than 0, until the absorbable power of the energy storage battery is 0 or the battery stack outputs power to an external load.

[0033] Thirdly, the present invention also provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the fast response method for any solid oxide fuel cell stack in the first aspect.

[0034] Fourthly, the present invention also provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to perform any of the fast response methods for solid oxide battery stacks in the first aspect.

[0035] The beneficial effects of adopting the above technical solution are as follows: By introducing an energy storage battery and monitoring the difference between the real-time output power of the solid oxide fuel cell stack and the power demand of the external load in real time, when the solid oxide fuel cell stack cannot respond quickly to changes in external load power, the supplementary or absorbed power of the energy storage battery can be used to adjust the balance between the real-time output power of the stack, the supplementary or absorbed power of the energy storage battery, and the power demand of the external load. This reduces the response time of the stack to external load demand and achieves a rapid response to changes in external load. Furthermore, by converting the hot standby solid oxide fuel cell stack to an operating state and outputting power to the energy storage battery, the energy of the energy storage battery is replenished in a timely manner, improving the long-term operational stability of the energy storage battery and effectively shortening the standby time of the hot standby stack, thereby improving the utilization efficiency and overall operational benefits of the stack. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0037] Figure 1 This is a schematic diagram of the existing response time of a solid oxide fuel cell stack in one embodiment of this application;

[0038] Figure 2 This is a schematic diagram of the equipment related to the fast response method for a solid oxide fuel cell stack in one embodiment of this application;

[0039] Figure 3 This is a schematic diagram of a fast response method for a solid oxide fuel cell stack in one embodiment of this application;

[0040] Figure 4 This is a schematic diagram of a fast response method for a solid oxide fuel cell stack in one embodiment of this application;

[0041] Figure 5 This is a schematic diagram illustrating the fast response time of a solid oxide fuel cell stack in one embodiment of this application;

[0042] Figure 6 This is a schematic diagram of a fast response device for a solid oxide fuel cell stack in one embodiment of this application. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. To describe the present invention in more detail, the fast response method and apparatus for solid oxide fuel cell stacks provided by the present invention will be specifically described below with reference to the accompanying drawings.

[0044] Solid oxide fuel cell stacks are composed of several solid oxide fuel cells stacked together, possessing high voltage and output power. Existing solid oxide fuel cell stacks typically operate at temperatures between 500℃ and 1000℃, with varying output power at different operating temperatures. Furthermore, the high-temperature operation of solid oxide fuel cell stacks leads to thermal inertia, slowing down temperature regulation and requiring a longer time to fully respond to the power demands of external loads.

[0045] See appendix Figure 1, the horizontal axis T is the operating time of the solid oxide fuel cell stack, and the vertical axis P is the real-time power output by the solid oxide fuel cell stack. At time t0, the required power of the external load is P1, while the real-time power P0 output by the solid oxide fuel cell stack is less than P1. It is necessary to increase the temperature of the fuel cell stack to increase the real-time power so that the real-time power P0 is equal to the required power P1. However, due to the limitation of the fuel cell stack's temperature rise characteristics, it takes a certain amount of time for the temperature of the fuel cell stack to increase. Until time t1, the real-time power output by the fuel cell stack can meet the required power. Similarly, at time t2, the required power of the external load is P2, while the real-time power P1 output by the solid oxide fuel cell stack is greater than P2. It is necessary to reduce the temperature of the fuel cell stack to reduce the real-time power so that the real-time power P1 is equal to the required power P2. However, due to the influence of the thermal inertia of the fuel cell stack during high-temperature operation, it takes a relatively long time for the temperature of the fuel cell stack to decrease. Until time t3, the real-time power output by the fuel cell stack can meet the required power. In this regard, the fast response method and device for the solid oxide fuel cell stack proposed in this application are used to attach Figure 1 where Δt 升 and Δt 降 is shortened to improve the efficiency of the solid oxide fuel cell stack's response to changes in the required power of the external load.

[0046] The fast response method for the solid oxide fuel cell stack provided by the present invention introduces an energy storage battery. When the solid oxide fuel cell stack cannot quickly respond to changes in the external load, it is adjusted by the supplementary power or absorption power of the energy storage battery to achieve the effect of quickly responding to changes in the external load. Taking the application of this method to a terminal device as an example, it is described in combination with the attached Figure 2 related equipment of the fast response method for the solid oxide fuel cell stack shown in the attachment, the attached Figure 3 schematic diagram of the fast response method for the solid oxide fuel cell stack shown in the attachment, and the attached Figure 4 schematic flow chart of the fast response method for the solid oxide fuel cell stack shown in the attachment.

[0047] First, in combination with the attached Figure 2 , the related equipment of the fast response method for the solid oxide fuel cell stack includes several solid oxide fuel cell stacks, an energy storage battery, and an energy storage battery control module. The energy storage battery and the energy storage battery control module can act on multiple solid oxide fuel cell stacks simultaneously to quickly respond to the external load. To better illustrate the method of this embodiment, the following only describes how the energy storage battery and the energy storage battery module quickly respond to the external load of a single solid oxide fuel cell stack. The working principle can be directly extended to the case of multiple solid oxide fuel cell stacks.

[0048] This embodiment then provides an application scenario for the fast response method of solid oxide fuel cell stacks. This application scenario includes an energy storage battery control module, which is a terminal device capable of calculating data and issuing commands. The terminal device includes, but is not limited to, smartphones and computer devices, wherein the computer device can be at least one of desktop computers, portable computers, laptop computers, mainframe computers, tablet computers, etc. The user operates the terminal device to adjust the energy storage battery's output supplementary power or absorb differential power until the real-time output power of the solid oxide fuel cell stack equals the power demand of the external load. For details, please refer to the embodiment of the fast response method for solid oxide fuel cell stacks.

[0049] Step S101: Monitor the operating status and real-time power of the solid oxide fuel cell stack, the power demand of the external load, and the replenishable and absorbable power of the energy storage battery.

[0050] Specifically, the operating states of a solid oxide fuel cell stack include its external power output state and its hot standby state. In this embodiment, the real-time power of the monitored solid oxide fuel cell stack is denoted as P. out The power demand of the external load is denoted as P. N A storage battery is a battery system used to store electrical energy. It converts electrical energy into chemical energy, stores the charge in the battery, and then releases it when needed.

[0051] Step S102: Determine whether the solid oxide fuel cell stack is in a hot standby state based on the operating status.

[0052] Specifically, the thermal standby state of a solid oxide fuel cell stack refers to the state in which the solid oxide fuel cell consumes a small amount of electrical energy to generate heat to maintain the stack temperature at its operating temperature, but does not output power externally. The operating temperature is within the range of 500℃-1000℃.

[0053] Step S103: If the solid oxide battery stack is not in a hot standby state, the differential power is obtained based on the real-time power and the required power.

[0054] The specific expression for the differential power ΔP is: ΔP = P N -P out .

[0055] Step S104: If the differential power is greater than 0 and the supplementable power is greater than the differential power, obtain the first importance tag of power supplementation.

[0056] Step S105: Based on the first importance tag, connect the energy storage battery to output differential power to the external load at the preset demand power change time point until the differential power is 0.

[0057] According to the above expression, when the power difference is greater than 0, that is, the real-time power output of the solid oxide fuel cell stack fails to meet the power demand of the external load, if it is necessary to achieve a rapid response to the power changes of the external load, an energy storage battery needs to be introduced. The supplementary power provided by the energy storage battery can make up for the power difference, so that the power demand changes of the external load can be responded to quickly.

[0058] As the temperature of the solid oxide fuel cell stack continues to rise, the real-time output power gradually approaches the power demand of the external load. During this process, the power difference between the energy storage battery and the external load gradually decreases until the real-time output power of the solid oxide fuel cell stack equals the power demand of the external load, i.e., the power difference is 0. At this point, the energy storage battery no longer outputs power to the external load.

[0059] Step S106: If the differential power is less than 0 and the absorbable power is greater than the differential power, obtain the second importance label of power absorption.

[0060] Step S107: Based on the second importance tag, the energy storage battery is connected at the preset demand power change time point to absorb the difference power until the difference power is 0.

[0061] According to the above expression, when the differential power is less than 0, that is, when the demand power of the external load suddenly decreases, the real-time output power of the solid oxide fuel cell stack exceeds the demand power of the external load, and there is excess differential power. In this case, if it is necessary to achieve a rapid response to the power change of the external load, an energy storage battery needs to be introduced. The energy storage battery is connected to the solid oxide fuel cell stack to absorb the differential power, so that the change in the demand power of the external load can be responded to quickly.

[0062] As the temperature of the solid oxide fuel cell stack continues to decrease, the real-time output power gradually approaches the power demand of the external load. During this process, the power difference between the energy storage battery and the external load gradually decreases until the real-time output power of the solid oxide fuel cell stack equals the power demand of the external load, i.e., the power difference is 0. At this point, the energy storage battery no longer absorbs power from the solid oxide fuel cell stack.

[0063] Combined with appendix Figure 5 A schematic diagram of the fast response of a solid oxide fuel cell, at t 1s It continuously connects to the energy storage battery to provide differential power supplementation output, enabling the output power (including the real-time output power of the solid oxide fuel cell stack and the differential output power of the energy storage battery) to quickly reach the external load's required power P1, and in conjunction with the attached... Figure 1 The comparison clearly shows t 1sThe time has shifted forward compared to time t1, causing Δt to... 升 Shorten. In t 1s After a certain point, the real-time power output of the solid oxide fuel cell stack continues to increase until the real-time power fully meets the power demand P1 of the external load. At this point, the energy storage battery no longer provides power supplementation to the solid oxide fuel cell stack, and the system enters a stable operating state.

[0064] Similarly, in the appendix Figure 5 In the middle, in t 3s The system continuously connects to energy storage batteries to absorb excess power, allowing the solid oxide fuel cell stack to absorb and store excess power. The absorbed power quickly reaches the required power P2 of the external load. Figure 1 The comparison clearly shows t 3s The time shifted forward compared to time t3, causing Δt to... 降 Shorten. In t 3s Afterward, the real-time power output of the solid oxide fuel cell stack continues to decrease until the real-time power fully meets the power demand P2 of the external load. At this point, the energy storage battery no longer absorbs the excess power of the solid oxide fuel cell stack, and the system enters a stable operating state.

[0065] Furthermore, based on the first importance label in step S105 and the second importance label in step S107 of the above-mentioned rapid response method, the importance level of the increase in external power demand and the response is determined, thereby determining the specific time point for connecting the energy storage battery and ensuring the long-term stability of the energy storage battery.

[0066] In step S105, based on the first importance tag, the energy storage battery is connected at the preset time point of demand power change to output differential power to the external load until the differential power is 0. Specifically, there are three cases:

[0067] (1) When the first importance tag is a first-order temperature rise tag, when the solid oxide battery stack is connected to an external load and outputs real-time power, the connected energy storage battery outputs differential power to the external load until the differential power is 0.

[0068] (2) When the first importance label is a second-order temperature rise label, after the solid oxide battery stack is connected to the external load and outputs actual power for a first time period, the connected energy storage battery outputs differential power to the external load until the differential power is 0.

[0069] (3) When the first importance label is a third-order temperature rise label, before the solid oxide battery stack is connected to the external load and outputs actual power for a first time period, the connected energy storage battery outputs differential power to the external load until the differential power is 0.

[0070] Step S107 involves connecting the energy storage battery to absorb the differential power at preset power demand change time points based on the second importance label, until the differential power is 0. This is specifically divided into three cases:

[0071] (1) When the second importance label is a first-order cooling label, when the power demand of the external load decreases, the energy storage battery connects to the solid oxide fuel cell stack to absorb the difference power until the difference power is 0.

[0072] (2) When the second importance label is a second-order cooling label, after the external load power demand decreases for a second period of time, the energy storage battery connects to the solid oxide fuel cell stack to absorb the difference power until the difference power is 0.

[0073] (3) When the second importance label is a third-order cooling label, before the external load power demand decreases for a second time period, the energy storage battery connects to the solid oxide fuel cell stack to absorb the difference power until the difference power is 0.

[0074] Furthermore, for the hot standby state of solid oxide fuel cell stacks, to avoid unnecessary energy consumption and lack of electrical energy generation during hot standby, the fast response method also proposes:

[0075] If the solid oxide battery stack is in a hot standby state and the absorbable power of the energy storage battery is greater than 0, the battery stack in the hot standby state is switched to the working state and outputs power to the energy storage battery until the absorbable power of the energy storage battery is 0 or the battery stack outputs power to an external load.

[0076] Switching the battery stack from standby to operational status and outputting energy to the energy storage battery not only reduces the standby time of the battery stack and improves the utilization rate of the battery stack, but also provides sufficient power to the energy storage battery and ensures the long-term stability of the energy storage battery.

[0077] Furthermore, since the fuel cell stack can be configured with a dual-channel heating mode, namely combustion heating and electric heating, in order to improve the response rate, a portion of the heating power can be diverted to the solid oxide fuel cell stack when the energy storage battery has sufficient energy. Specifically:

[0078] When the replenishable power of the energy storage battery is greater than the power demand of the external load, and the solid oxide fuel cell stack is started by electric heating, the energy storage battery outputs the required power to the external load and simultaneously provides heating power to the solid oxide fuel cell stack.

[0079] Under this operating condition, the energy storage battery needs to simultaneously provide the power demand of the external load and the heating power of the solid oxide fuel cell stack, which places high demands on the capacity of the energy storage battery.

[0080] It should be understood that, although attached Figure 3-4 The steps in the flowchart are shown sequentially according to the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order requirement for the execution of these steps, and they can be executed in other orders. Furthermore, [the following is a list of steps]. Figure 3-4 At least some of the steps in the process may include multiple sub-steps or sub-stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least some of the sub-steps or stages of other steps.

[0081] The above-described embodiments of the present invention provide a detailed description of a fast response method for solid oxide fuel cell stacks. Since the above-described method can be implemented using various types of devices, the present invention also discloses a fast response device for solid oxide fuel cell stacks corresponding to the above-described method, in conjunction with the appendix. Figure 6 The following are specific embodiments for detailed explanation.

[0082] The power monitoring module 601 is used to monitor the operating status and real-time power of the solid oxide fuel cell stack, the power demand of the external load, and the supplemental and absorbable power of the energy storage battery.

[0083] The working status acquisition module 602 is used to determine whether the solid oxide fuel cell stack is in a hot standby state based on the working status.

[0084] The differential power calculation module 603 is used to obtain the differential power based on the real-time power and the required power if the solid oxide battery stack is not in a hot standby state.

[0085] The first tag acquisition module 604 is used to acquire a first importance tag for power supplementation if the difference power is greater than 0 and the supplementable power is greater than the difference power.

[0086] The power supplement module 605 is used to connect the energy storage battery to output differential power to the external load at preset demand power change time points according to the first importance tag, until the differential power is 0.

[0087] The second tag acquisition module 606 is used to acquire a second importance tag for power absorption if the differential power is less than 0 and the absorbable power is greater than the differential power.

[0088] The power absorption module 607 is used to connect the energy storage battery to absorb the difference power at a preset time point of power demand change according to the second importance label, until the difference power is 0.

[0089] Furthermore, the device also includes a standby absorption module 608, used to switch the battery stack in the hot standby state to the working state and output power to the energy storage battery if the solid oxide battery stack is in a hot standby state and the absorbable power of the energy storage battery is greater than 0, until the absorbable power of the energy storage battery is 0 or the battery stack outputs power to an external load.

[0090] For details regarding the fast response device for solid oxide fuel cell stacks, please refer to the method specifications above; they will not be repeated here. Each module in the aforementioned device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in hardware or independently of the terminal device's processor, or stored in software within the terminal device's memory, allowing the processor to invoke and execute the corresponding operations of each module.

[0091] In one embodiment, the present invention also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the fast response method for the solid oxide fuel cell stack described above.

[0092] The computer-readable storage medium may be an electronic memory such as flash memory, EEPROM (Electrically Erasable Programmable Read-Only Memory), EPROM (Erasable Programmable Read-Only Memory), hard disk, or ROM. Optionally, the computer-readable storage medium includes non-transitory computer-readable storage medium. The computer-readable storage medium has storage space for program code that performs any of the method steps described above. This program code can be read from or written to one or more computer program products, and the program code may be compressed in an appropriate form.

[0093] In one embodiment, the present invention provides a computer device including a memory and a processor, the memory storing a computer program, the processor executing the computer program to perform the above-described fast response method for solid oxide fuel cell stacks.

[0094] The computer device includes a memory, a processor, and one or more computer programs, wherein the one or more computer programs may be stored in the memory and configured to be executed by one or more processors, and the one or more application programs are configured to perform the fast response method for the solid oxide fuel cell stack described above.

[0095] A processor may include one or more processing cores. The processor connects to various parts of the computer device using various interfaces and lines, and performs various functions and processes data by running or executing instructions, programs, code sets, or instruction sets stored in memory, and by calling data stored in memory. Optionally, the processor may be implemented using at least one hardware form of Digital Signal Processing (DSP), Field-Programmable Gate Array (FPGA), or Programmable Logic Array (PLA). The processor may integrate one or a combination of several of the following: Central Processing Unit (CPU), Graphics Processing Unit (GPU), and modem. The CPU primarily handles the operating system, user interface, and applications; the GPU is responsible for rendering and drawing the displayed content; and the modem handles wireless communication. It is understood that the modem may also be implemented separately as a communication chip, without being integrated into the processor.

[0096] The memory may include random access memory (RAM) or read-only memory (ROM). The memory can be used to store instructions, programs, code, code sets, or instruction sets. The memory may include a program storage area and a data storage area. The program storage area may store instructions for implementing an operating system, instructions for implementing at least one function (such as touch functionality, sound playback functionality, image playback functionality, etc.), and instructions for implementing the various method embodiments described above. The data storage area may also store data created by the terminal device during use.

[0097] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fast response method for a solid oxide fuel cell stack, characterized in that, The solid oxide fuel cell stack is connected to an energy storage battery, and the method includes: Monitor the operating status and real-time power of the solid oxide fuel cell stack, the power demand of the external load, and the supplemental and absorbable power of the energy storage battery; Determine whether the solid oxide fuel cell stack is in a hot standby state based on the described operating status; If the solid oxide fuel cell stack is not in a hot standby state, the differential power is obtained based on the real-time power and the required power. If the difference in power is greater than 0, and the supplementable power is greater than the difference in power, obtain the first importance label for power supplementation; Based on the first importance tag, the energy storage battery is connected to output differential power to the external load at the preset time point of power demand change, until the differential power is 0; If the differential power is less than 0 and the absorbable power is greater than the differential power, obtain a second importance label for power absorption; According to the second importance label, the energy storage battery is connected at the preset time point of demand power change to absorb the difference power until the difference power is 0; Based on the first importance tag, the energy storage battery is connected to output differential power to the external load at preset power demand change time points until the differential power is 0, specifically: When the first importance tag is a first-order temperature rise tag, when the solid oxide fuel cell stack is connected to an external load and outputs real-time power, the connected energy storage battery outputs differential power to the external load until the differential power is 0. When the first importance tag is a second-order temperature rise tag, after the solid oxide fuel cell stack is connected to an external load and outputs real-time power for a first time period, the connected energy storage battery outputs differential power to the external load until the differential power is 0. When the first importance label is a third-order temperature rise label, before the solid oxide fuel cell stack is connected to an external load and outputs real-time power for a first time period, the connected energy storage battery outputs differential power to the external load until the differential power is 0. Based on the second importance label, the energy storage battery is connected at preset power demand change time points to absorb the difference in power until the difference in power is 0, specifically: When the second importance label is a first-order cooling label, when the power demand of the external load decreases, the energy storage battery connects to the solid oxide fuel cell stack to absorb the difference power until the difference power is 0. When the second importance label is a second-order cooling label, after the external load power demand decreases for a second period of time, the energy storage battery connects to the solid oxide fuel cell stack to absorb the difference power until the difference power is 0. When the second importance label is a third-order cooling label, before the external load power demand decreases for a second time period, the energy storage battery connects to the solid oxide fuel cell stack to absorb the difference power until the difference power is 0.

2. The fast response method for solid oxide fuel cell stacks as described in claim 1, characterized in that, The method further includes: If the solid oxide fuel cell stack is in a hot standby state and the absorbable power of the energy storage battery is greater than 0, the stack in the hot standby state is switched to the working state and outputs power to the energy storage battery until the absorbable power of the energy storage battery is 0 or the stack outputs power to an external load.

3. The fast response method for solid oxide fuel cell stacks as described in claim 1, characterized in that, The specific expression for obtaining the differential power based on the real-time power and the demand power is as follows: ， in, For differential power, For the power demand of external loads, This represents the real-time power of the solid oxide fuel cell stack.

4. The fast response method for solid oxide fuel cell stacks as described in claim 1, characterized in that, The method further includes: When the replenishable power of the energy storage battery is greater than the power demand of the external load, and the solid oxide fuel cell stack is started by electric heating, the energy storage battery outputs the required power to the external load and simultaneously provides heating power to the solid oxide fuel cell stack.

5. A fast response device for a solid oxide fuel cell stack, used to implement the fast response method for a solid oxide fuel cell stack according to any one of claims 1-4, characterized in that, The solid oxide fuel cell stack is connected to an energy storage battery, and the device includes: The power monitoring module is used to monitor the operating status and real-time power of the solid oxide fuel cell stack, the power demand of the external load, and the supplemental and absorbable power of the energy storage battery. The working status acquisition module is used to determine whether the solid oxide fuel cell stack is in a hot standby state based on the working status. The differential power calculation module is used to obtain the differential power based on the real-time power and the required power if the solid oxide fuel cell stack is not in a hot standby state. The first tag acquisition module is used to acquire a first importance tag for power supplementation if the difference power is greater than 0 and the supplementable power is greater than the difference power. The power supplement module is used to connect the energy storage battery to output differential power to the external load at preset time points of demand power change based on the first importance label, until the differential power is 0; The second tag acquisition module is used to acquire a second importance tag for power absorption if the difference power is less than 0 and the absorbable power is greater than the difference power. The power absorption module is used to connect to the energy storage battery at preset power demand change time points according to the second importance label to absorb the difference power until the difference power is 0.

6. The fast response device for a solid oxide fuel cell stack as described in claim 5, characterized in that, The device further includes: The standby absorption module is used to switch the solid oxide fuel cell stack from a hot standby state to an operating state and output power to the energy storage battery if the solid oxide fuel cell stack is in a hot standby state and the absorbable power of the energy storage battery is greater than 0, until the absorbable power of the energy storage battery is 0 or the fuel cell stack outputs power to an external load.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the fast response method for any one of the solid oxide fuel cell stacks according to claims 1-4.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it performs the fast response method for solid oxide fuel cell stacks according to any one of claims 1-4.

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