Fuel cell voltage clamping control method, device, electronic device and storage medium

Abstract

The present invention provides a fuel cell voltage clamping control method, device, electronic device, and storage medium. The fuel cell voltage clamping control method includes: setting a fuel cell average single-chip high voltage judgment threshold Vcell, setting a clamping potential current stabilization time T1, and obtaining an initial clamping potential current value A1; when the fuel cell enters a shutdown purge state, reading the fuel cell average single-chip voltage VAvg; when the voltage VAvg is less than the threshold Vcell, determining whether the fuel cell's stabilization time is greater than the stabilization time T1; if the fuel cell's stabilization time is greater than the stabilization time T1, reading the fuel cell's operating current A2; and assigning the value of the operating current A2 to the initial clamping potential current value A1. The high voltage is controlled by closed-loop output current control during the fuel cell purge phase. Each time the current stabilizes and the potential meets the requirements, the current is recorded and used for the next initial clamping potential current value, thereby solving the high voltage problem and achieving the purpose of clamping potential and current self-adaptation.

Description

Technical Field

[0001] The present invention belongs to the field of new energy technology, and in particular relates to a fuel cell voltage clamping control method, device, electronic equipment and storage medium. Background Art

[0002] Under the dual pressures of energy and the environment, fuel cell vehicles (FCVs) have become the future direction of the automotive industry and a key research focus. Among the many factors affecting fuel cell lifespan, degradation of the cathode catalyst caused by high potential is considered the primary driver of stack performance degradation. Under high potential conditions, the carbon support material is easily oxidized, weakening the bond between the PT particles and the carbon support, causing the PT particles to fall off and ultimately dissolve in the electrolyte, impacting the catalytic performance of the stack. Furthermore, the exfoliated PT particles are bound together by the electrolyte or binder, increasing the electrolyte resistance.

[0003] Existing technologies usually use load-drawn current to control high potential. However, due to differences in performance of each fuel cell engine, the clamp potential and current are different, resulting in the problem that the clamp potential and current cannot be adaptively adjusted. Summary of the Invention

[0004] In response to the problems existing in the prior art, the present invention provides a fuel cell voltage clamping control method, device, electronic device and storage medium, which at least partially solve the clamping potential and current adaptation problems existing in the prior art.

[0005] In a first aspect, an embodiment of the present disclosure provides a fuel cell voltage clamping control method, comprising:

[0006] Set the fuel cell average single-chip high potential judgment threshold Vcell, set the clamp potential and current stabilization time T1, and obtain the initial clamp potential and current value A1;

[0007] When the fuel cell enters the shutdown purge state, read the average single-chip voltage VAvg of the fuel cell;

[0008] When the voltage VAvg is less than the threshold Vcell, it is determined whether the stabilization time of the fuel cell is greater than the stabilization time T1;

[0009] If the stabilization time of the fuel cell is greater than the stabilization time T1, the operating current A2 of the fuel cell is read;

[0010] Assign the value of the working current A2 to the initial clamp potential current value A1;

[0011] When the fuel cell enters the operating state and the operating current of the fuel cell remains unchanged for a set time, the average single-chip voltage V1 of the fuel cell is read;

[0012] When the voltage V1 is greater than the set voltage value and less than the threshold Vcell, the current operating current A3 of the fuel cell is recorded, and the maximum value between the current operating current A3 and the set initial clamp potential current value A11 is taken as the initial clamp potential current value A1 in the purge state.

[0013] Optionally, before the step of when the voltage VAvg is less than the threshold Vcell, the method further includes:

[0014] It is determined whether the voltage VAvg is less than the threshold value Vcell. When the voltage VAvg is not less than the threshold value Vcell, the average single-chip voltage VAvg of the fuel cell is continued to be read.

[0015] Optionally, the step of reading the average fuel cell single-chip voltage VAvg includes:

[0016] The initial clamp potential current value A1 is added or subtracted at a set slope while the average single-chip voltage VAvg of the fuel cell is read.

[0017] In a second aspect, an embodiment of the present disclosure further provides a fuel cell voltage clamping control device, comprising:

[0018] The initial module is used to set the fuel cell average single-chip high potential judgment threshold Vcell, set the clamp potential and current stabilization time T1, and obtain the initial clamp potential and current value A1;

[0019] The voltage reading module is used to read the average single-chip voltage VAvg of the fuel cell when the fuel cell enters the shutdown purge state;

[0020] A stability judgment module, used to judge whether the stability time of the fuel cell is greater than the stability time T1 when the voltage VAvg is less than the threshold Vcell;

[0021] A current reading module, configured to read the operating current A2 of the fuel cell if the stabilization time of the fuel cell is greater than the stabilization time T1;

[0022] An assignment module, used for assigning the value of the working current A2 to the initial clamp potential current value A1;

[0023] Obtain the initial clamp potential current value A1, including:

[0024] When the fuel cell enters the operating state and the operating current of the fuel cell remains unchanged for a set time, the average single-chip voltage V1 of the fuel cell is read;

[0025] When the voltage V1 is greater than the set voltage value and less than the threshold Vcell, the current operating current A3 of the fuel cell is recorded, and the maximum value between the current operating current A3 and the set initial clamp potential current value A11 is taken as the initial clamp potential current value A1 in the purge state.

[0026] Optionally, the device further comprises:

[0027] The voltage judgment module is used to judge whether the voltage VAvg is less than the threshold value Vcell. When the voltage VAvg is not less than the threshold value Vcell, the average single-chip voltage VAvg of the fuel cell is continuously read.

[0028] Optionally, the step of reading the average fuel cell single-chip voltage VAvg includes:

[0029] The initial clamp potential current value A1 is added or subtracted at a set slope while the average single-chip voltage VAvg of the fuel cell is read.

[0030] Optionally, obtaining the initial clamp potential current value A1 includes:

[0031] When the fuel cell enters the operating state and the operating current of the fuel cell remains unchanged for a set time, the average single-chip voltage V1 of the fuel cell is read;

[0032] When the voltage V1 is greater than the set voltage value and less than the threshold Vcell, the current operating current A3 of the fuel cell is recorded, and the maximum value between the current operating current A3 and the set initial clamp potential current value A11 is taken as the initial clamp potential current value A1 in the purge state.

[0033] In a third aspect, an embodiment of the present disclosure further provides an electronic device, the electronic device comprising:

[0034] at least one processor; and,

[0035] a memory communicatively connected to the at least one processor; wherein,

[0036] The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the fuel cell voltage clamping control method described in any one of the first aspects.

[0037] In a fourth aspect, an embodiment of the present disclosure further provides a computer-readable storage medium, which stores computer instructions for causing a computer to execute any of the fuel cell voltage clamping control methods described in the first aspect.

[0038] The present invention provides a fuel cell voltage clamping control method, device, electronic device and storage medium, wherein the fuel cell voltage clamping control method controls the high potential by closed-loop controlling the output current during the fuel cell purge phase. Each time the current is stable and the potential meets the requirements, the current current is recorded and used for the next initial clamping potential and current value, thereby solving the high potential problem and achieving the purpose of achieving clamping potential and current self-adaptation. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The above and other objects, features and advantages of the present disclosure will become more apparent through a more detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present disclosure.

[0040] Figure 1 A flowchart of a fuel cell voltage clamping control method provided by an embodiment of the present disclosure;

[0041] Figure 2 A block diagram of a fuel cell voltage clamping control device according to an embodiment of the present disclosure;

[0042] Figure 3 A diagram showing the relationship between voltage and current in a fuel cell voltage clamping control method provided by an embodiment of the present disclosure;

[0043] Figure 4 A block diagram of an electronic device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0044] The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0045] It should be clear that the following embodiments of the present disclosure are described through specific concrete examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. The present disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that the following embodiments and features in the embodiments can be combined with each other in the absence of conflict. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0046] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on this disclosure, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects described herein can be used to implement an apparatus and / or practice a method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this apparatus and / or practice this method.

[0047] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present disclosure. The illustrations only show components related to the present disclosure and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0048] Additionally, in the following description, specific details are provided to provide a thorough understanding of the examples. However, one skilled in the art will appreciate that the aspects described can be practiced without these specific details.

[0049] For ease of understanding, Figure 1 As shown, this embodiment discloses a fuel cell voltage clamping control method, including:

[0050] Set the fuel cell average single-chip high potential judgment threshold Vcell, set the clamp potential and current stabilization time T1, and obtain the initial clamp potential and current value A1;

[0051] When the fuel cell enters the shutdown purge state, read the average single-chip voltage VAvg of the fuel cell;

[0052] When the voltage VAvg is less than the threshold Vcell, it is determined whether the stabilization time of the fuel cell is greater than the stabilization time T1;

[0053] If the stabilization time of the fuel cell is greater than the stabilization time T1, the operating current A2 of the fuel cell is read;

[0054] The value of the working current A2 is assigned to the initial clamp potential current value A1.

[0055] Optionally, before the step of when the voltage VAvg is less than the threshold Vcell, the method further includes:

[0056] It is determined whether the voltage VAvg is less than the threshold value Vcell. When the voltage VAvg is not less than the threshold value Vcell, the average single-chip voltage VAvg of the fuel cell is continued to be read.

[0057] Optionally, the step of reading the average fuel cell single-chip voltage VAvg includes:

[0058] The initial clamp potential current value A1 is added or subtracted at a set slope while the average single-chip voltage VAvg of the fuel cell is read.

[0059] The slope is set to X amperes per second, where X can be obtained through simulation calculation or testing and is greater than 0.

[0060] The voltage value is set to be greater than 0 but less than the threshold Vcell.

[0061] In a specific example, Figure 1 As shown in Figure 1 , the fuel cell voltage clamping control method includes:

[0062] Step S1: Set the fuel cell average single-cell high potential judgment threshold Vcell, where the threshold Vcell > 0, judge the clamping potential current stabilization time T1, the stabilization time T1 > 0, the initial clamping potential current value A1, the current value A1 > 0, and A1 is saved in the controller EEPROM and can be modified.

[0063] Step S2: Read the fuel cell status.

[0064] Step S3: Judge whether to enter the shutdown purge state. If yes, enter step s4; if no, enter step S2.

[0065] Step S4: Clamp the potential with the initial current A1 and add or subtract the clamping potential current at the set slope while reading the fuel cell average single-cell voltage VAvg.

[0066] Step S5: Judge whether VAvg < Vcell. If yes, jump to step s6; otherwise, jump to step S4.

[0067] Step S6: Maintain the current A2.

[0068] Step S7: Judge whether the stabilization time of the A2 current remaining unchanged is greater than T1. If yes, jump to step s8; otherwise, jump to step S6. As Figure 3 shown.

[0069] Step S8: Record the current A2 and assign the value of A2 to A1.

[0070] Step S9: The controller saves the EEPROM learning to complete.

[0071] After the fuel cell enters the operating state and the current enters the steady state (the current remains unchanged for a certain period of time), if the read average single-cell voltage is greater than a certain value and less than Vcell, record the current A3, and take the maximum value of A3 and A1 as the initial clamping potential current in this purge state.

[0072] As Figure 2 shown, this embodiment discloses a fuel cell voltage clamping control device, including:

[0073] An initial module for setting the fuel cell average single-cell high potential judgment threshold Vcell, setting the clamping potential current stabilization time T1, and obtaining the initial clamping potential current value A1;

[0074] A voltage reading module for reading the fuel cell average single-cell voltage VAvg when the fuel cell enters the shutdown purge state;

[0075] A stability judgment module, used to judge whether the stability time of the fuel cell is greater than the stability time T1 when the voltage VAvg is less than the threshold Vcell;

[0076] A current reading module, configured to read the operating current A2 of the fuel cell if the stabilization time of the fuel cell is greater than the stabilization time T1;

[0077] The assignment module is used to assign the value of the working current A2 to the initial clamp potential current value A1.

[0078] Optionally, the device further comprises:

[0079] The voltage judgment module is used to judge whether the voltage VAvg is less than the threshold value Vcell. When the voltage VAvg is not less than the threshold value Vcell, the average single-chip voltage VAvg of the fuel cell is continuously read.

[0080] Optionally, the step of reading the average fuel cell single-chip voltage VAvg includes:

[0081] The initial clamp potential current value A1 is added or subtracted at a set slope while the average single-chip voltage VAvg of the fuel cell is read.

[0082] Optionally, obtaining the initial clamp potential current value A1 includes:

[0083] When the fuel cell enters the operating state and the operating current of the fuel cell remains unchanged for a set time, the average single-chip voltage V1 of the fuel cell is read;

[0084] When the voltage V1 is greater than the set voltage value and less than the threshold Vcell, the current operating current A3 of the fuel cell is recorded, and the maximum value between the current operating current A3 and the set initial clamp potential current value A11 is taken as the initial clamp potential current value A1 in the purge state.

[0085] An electronic device according to an embodiment of the present disclosure includes a memory and a processor. The memory is used to store non-transitory computer-readable instructions. Specifically, the memory may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may, for example, include random access memory (RAM) and / or cache memory (cache), etc. The non-volatile memory may, for example, include a read-only memory (ROM), a hard disk, a flash memory, etc.

[0086] The processor can be a central processing unit (CPU) or other form of processing unit with data processing capabilities and / or instruction execution capabilities, and can control other components in the electronic device to perform desired functions. In one embodiment of the present disclosure, the processor is used to execute the computer-readable instructions stored in the memory, causing the electronic device to perform all or part of the steps of the fuel cell voltage clamping control method described in the various embodiments of the present disclosure.

[0087] Those skilled in the art should understand that in order to solve the technical problem of how to obtain a good user experience, this embodiment may also include well-known structures such as a communication bus and an interface, and these well-known structures should also be included in the scope of protection of this disclosure.

[0088] like Figure 4 The present invention provides a schematic structural diagram of an electronic device according to an embodiment of the present invention, which is suitable for implementing the electronic device according to an embodiment of the present invention. Figure 4 The electronic device shown is only an example and should not limit the functions and scope of use of the embodiments of the present disclosure.

[0089] like Figure 4 As shown, the electronic device may include a processing device (such as a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) or a program loaded from a storage device into a random access memory (RAM). In the RAM, various programs and data required for the operation of the electronic device are also stored. The processing device, ROM, and RAM are connected to each other via a bus. An input / output (I / O) interface is also connected to the bus.

[0090] Typically, the following devices can be connected to the I / O interface: input devices such as sensors or visual information acquisition devices; output devices such as display screens; storage devices such as tapes and hard disks; and communication devices. The communication device allows the electronic device to communicate with other devices (such as edge computing devices) wirelessly or by wire to exchange data. Figure 4 The electronic device is shown with various devices, but it should be understood that it is not required to implement or possess all of the devices shown. More or fewer devices may be implemented or possessed instead.

[0091] In particular, according to an embodiment of the present disclosure, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present disclosure includes a computer program product, which includes a computer program carried on a non-transitory computer-readable medium, and the computer program contains program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network via a communication device, or installed from a storage device, or installed from a ROM. When the computer program is executed by a processing device, all or part of the steps of the fuel cell voltage clamping control method of the embodiment of the present disclosure are performed.

[0092] For detailed description of this embodiment, please refer to the corresponding description in the aforementioned embodiments, which will not be repeated here.

[0093] According to an embodiment of the present disclosure, a computer-readable storage medium stores non-transitory computer-readable instructions, which, when executed by a processor, execute all or part of the steps of the fuel cell voltage clamping control method according to each embodiment of the present disclosure.

[0094] The above-mentioned computer-readable storage media include, but are not limited to, optical storage media (e.g., CD-ROMs and DVDs), magneto-optical storage media (e.g., MOs), magnetic storage media (e.g., magnetic tapes or mobile hard disks), media with built-in rewritable non-volatile memory (e.g., memory cards), and media with built-in ROM (e.g., ROM cartridges).

[0095] For detailed description of this embodiment, please refer to the corresponding description in the aforementioned embodiments, which will not be repeated here.

[0096] The basic principles of the present disclosure have been described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, and effects mentioned in this disclosure are merely illustrative and not restrictive, and should not be construed as necessarily possessed by each embodiment of the present disclosure. Furthermore, the specific details disclosed above are provided for illustrative purposes and to facilitate understanding, rather than as limitations. These details do not limit the present disclosure to necessarily being implemented using these specific details.

[0097] In the present disclosure, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. The block diagrams of the devices, devices, equipment, and systems involved in the present disclosure are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As will be appreciated by those skilled in the art, these devices, devices, equipment, and systems can be connected, arranged, or configured in any manner. Words such as "including," "comprising," "having," and the like are open-ended words, meaning "including but not limited to," and can be used interchangeably therewith. The words "or" and "and" used herein refer to the words "and / or" and can be used interchangeably therewith, unless the context clearly indicates otherwise. The word "such as" used herein refers to the phrase "such as but not limited to," and can be used interchangeably therewith.

[0098] Additionally, as used herein, "or" used in a list of items beginning with "at least one" indicates a separate list, so that, for example, a list of "at least one of A, B, or C" means A or B or C, or AB or AC or BC, or ABC (i.e., A and B and C). Furthermore, the word "exemplary" does not mean that the example described is preferred or better than other examples.

[0099] It should also be noted that in the system and method of the present disclosure, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present disclosure.

[0100] Various changes, substitutions, and modifications may be made to the technology described herein without departing from the teachings defined by the appended claims. Moreover, the scope of the claims of this disclosure is not limited to the specific aspects of the processes, machines, manufactures, compositions of things, means, methods, and actions described above. Currently existing or later developed processes, machines, manufactures, compositions of things, means, methods, or actions that perform substantially the same function or achieve substantially the same results as the corresponding aspects described herein may be utilized. Accordingly, the appended claims include within their scope such processes, machines, manufactures, compositions of things, means, methods, or actions.

[0101] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present disclosure. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present disclosure. Therefore, the present disclosure is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0102] The above description has been provided for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present disclosure to the forms disclosed herein. Although a number of example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A fuel cell voltage clamping control method, characterized in that: include: Set the fuel cell average single-chip high potential judgment threshold Vcell, set the clamp potential and current stabilization time T1, and obtain the initial clamp potential and current value A1; When the fuel cell enters the shutdown purge state, read the average single-chip voltage VAvg of the fuel cell; When the voltage VAvg is less than the threshold Vcell, it is determined whether the stabilization time of the fuel cell is greater than the stabilization time T1; If the stabilization time of the fuel cell is greater than the stabilization time T1, the operating current A2 of the fuel cell is read; Assign the value of the working current A2 to the initial clamp potential current value A1; Obtain the initial clamp potential current value A1, including: When the fuel cell enters the operating state and the operating current of the fuel cell remains unchanged for a set time, the average single-chip voltage V1 of the fuel cell is read; When the voltage V1 is greater than the set voltage value and less than the threshold Vcell, the current operating current A3 of the fuel cell is recorded, and the maximum value between the current operating current A3 and the set initial clamp potential current value A11 is taken as the initial clamp potential current value A1 in the purge state.

2. The fuel cell voltage clamping control method according to claim 1, characterized in that: Before the step when the voltage VAvg is less than the threshold Vcell, the method includes: It is determined whether the voltage VAvg is less than the threshold value Vcell. When the voltage VAvg is not less than the threshold value Vcell, the average single-chip voltage VAvg of the fuel cell is continued to be read.

3. The fuel cell voltage clamping control method according to claim 1, characterized in that: The step of reading the average fuel cell single-chip voltage VAvg includes: The initial clamp potential current value A1 is added or subtracted at a set slope while the average single-chip voltage VAvg of the fuel cell is read.

4. A fuel cell voltage clamping control device, characterized in that: include: The initial module is used to set the fuel cell average single-chip high potential judgment threshold Vcell, set the clamp potential and current stabilization time T1, and obtain the initial clamp potential and current value A1; The voltage reading module is used to read the average single-chip voltage VAvg of the fuel cell when the fuel cell enters the shutdown purge state; A stability judgment module, used to judge whether the stability time of the fuel cell is greater than the stability time T1 when the voltage VAvg is less than the threshold Vcell; A current reading module, configured to read the operating current A2 of the fuel cell if the stabilization time of the fuel cell is greater than the stabilization time T1; An assignment module, used for assigning the value of the working current A2 to the initial clamp potential current value A1; Obtain the initial clamp potential current value A1, including: When the fuel cell enters the operating state and the operating current of the fuel cell remains unchanged for a set time, the average single-chip voltage V1 of the fuel cell is read; When the voltage V1 is greater than the set voltage value and less than the threshold Vcell, the current operating current A3 of the fuel cell is recorded, and the maximum value between the current operating current A3 and the set initial clamp potential current value A11 is taken as the initial clamp potential current value A1 in the purge state.

5. The fuel cell voltage clamping control device according to claim 4, characterized in that: Also includes: The voltage judgment module is used to judge whether the voltage VAvg is less than the threshold value Vcell. When the voltage VAvg is not less than the threshold value Vcell, the average single-chip voltage VAvg of the fuel cell is continuously read.

6. The fuel cell voltage clamping control device according to claim 4, characterized in that: The step of reading the average fuel cell single-chip voltage VAvg includes: The initial clamp potential current value A1 is added or subtracted at a set slope while the average single-chip voltage VAvg of the fuel cell is read.

7. An electronic device, characterized in that: The electronic device comprises: at least one processor; and, a memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the fuel cell voltage clamping control method according to any one of claims 1 to 3.

8. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to execute the fuel cell voltage clamping control method according to any one of claims 1 to 3.

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