Method, device, equipment and system for adjusting stress uniformity of reactor core of electric reactor

Abstract

The invention relates to a method, a device, equipment and a system for adjusting the stress uniformity of a stack core, and relates to the technical field of fuel cell stacks, and the method comprises the following steps: dividing the stack core into a plurality of stress areas, and obtaining the pressure value of each stress area; if the difference value between the target pressure value and the current pressure value of any stress area is larger than a set error, the current pressure values of all the stress areas are sequentially adjusted according to a set sequence, and for one stress area, the target pressure value and the current pressure value of the stress area are used for adjusting the current pressure value of the stress area; and acquiring a pressure adjustment value of the stress area according to the current pressure value of the stress area and the current pressure value of the stress area adjacent to the stress area, and adjusting the current pressure value of the stress area according to the pressure adjustment value of the stress area. According to the technical scheme, the stress uniformity of the fuel cell stack core can be quickly adjusted, so that the stress uniformity of the fuel cell stack core can be quickly achieved, the influence of each stress area on the adjacent stress areas is considered, and the problem that the stress uniformity of the fuel cell stack core is difficult to improve in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fuel cell stacks, in particular to a method, device, equipment and system for adjusting the stress uniformity of a stack core. BACKGROUND

[0002] A fuel cell stack is mainly composed of an inlet end plate, an inlet collector plate, a single cell or bipolar plate, a membrane electrode, a blind end collector plate, and a blind end plate, which are tightly assembled by a press machine. By supplying cooling water, hydrogen, and air to each cavity of the stack core, electricity is generated, and the working principle is similar to that of a series of small power cells releasing electrical energy externally.

[0003] The output power of current fuel cell stacks is not equal, and the stacks used in the industry are approximately between 20KW and 400KW, and the number of materials composing them increases with the increase in power. Due to the limited manufacturing level of materials (thickness, flatness, warping, etc.), and the fact that the materials are in a series of stacked combinations inside the stack, the cumulative error will affect the stress uniformity of the stack core. In addition, according to the design scheme of the stack, the locking point is often at the edge part, resulting in a difference in stress uniformity between the center and the edge. With the increase in the pressing force of the stack, this non-uniformity will be more pronounced.

[0004] In the prior art, such as patent number CN118782840A, a pressure distribution testing method, device, electronic equipment and medium for a fuel cell, wherein the method comprises: determining the position of uneven stress of single cells according to the obtained stack core packaging structure state and performance test results of the fuel cell stack to be tested; determining the pressure data acquisition points according to the position of uneven stress of single cells and obtaining the pressure distribution test data of the data acquisition points; analyzing the stress state and distribution law of the pressure distribution test data to obtain the pressure distribution results of each position of single cells, and obtaining the pressure distribution results of the fuel cell to be tested according to the pressure distribution results of each position of single cells. Thus, the problem of large difference in stress state of the stack under stacking, packaging and running state, and relatively difficult control process is solved, and the stress of each position of single cells in each area of the stack under stacking, packaging and running stage is accurately detected and the change law is realized.

[0005] However, through the performance test of the stack, the uneven distribution of pressure is essentially represented by the uneven distribution of voltage, which has certain deviation from the equivalent relationship, and it is difficult to equivalent the overall distribution unevenness from the distribution unevenness of each position, and there is a problem of difficult to improve the stress uniformity of the stack core of the fuel cell stack. SUMMARY

[0006] The application provides a method, device, equipment and system for adjusting stress uniformity of a stack core, which can solve the problem that in the prior art, the performance test of the stack is essentially represented by the uneven distribution of the voltage distribution, and there is a certain deviation in the equivalent relationship, and the uneven distribution of each position cannot be equivalent to the overall uneven distribution, so that the stress uniformity of the fuel cell stack core cannot be improved.

[0007] In a first aspect, the embodiments of the application provide a method for adjusting stress uniformity of a stack core, which comprises: dividing the stack core into a plurality of stress regions, and obtaining pressure values of the stress regions; If the difference between the target pressure value and the current pressure value of any stress region is greater than a set error, the current pressure value of each stress region is adjusted in a set order, for a stress region, the pressure adjustment value of the stress region is obtained based on the target pressure value and the current pressure value of the stress region, and the current pressure value of the adjacent stress region of the stress region, and the current pressure value of the stress region is adjusted based on the pressure adjustment value of the stress region.

[0008] In an embodiment, the pressure adjustment value of the stress region is obtained based on the target pressure value and the current pressure value of the stress region, and the current pressure value of the adjacent stress region of the stress region, and comprises: obtaining the current average pressure value of the adjacent stress region of the stress region based on the current pressure value of the adjacent stress region of the stress region; obtaining the pressure adjustment value of the stress region based on the target pressure value and the current pressure value of the stress region, and the current average pressure value of the adjacent stress region of the stress region.

[0009] In an embodiment, the pressure adjustment value of the stress region is obtained based on the target pressure value and the current pressure value of the stress region, and the current average pressure value of the adjacent stress region of the stress region, and comprises: obtaining the difference between the target pressure value of the stress region and the sum of the current pressure value of the stress region and the current average pressure value of the adjacent stress region of the stress region based on the target pressure value and the current pressure value of the stress region, and the current average pressure value of the adjacent stress region of the stress region; obtaining the pressure adjustment value of the stress region based on the difference between the target pressure value of the stress region and the sum of the current pressure value of the stress region and the current average pressure value of the adjacent stress region of the stress region.

[0010] In an embodiment, the pressure adjustment value of the current adjustment stress region is obtained according to the formula: wherein,​ a pressure adjustment value of a current stress region, an adjustment coefficient, a target pressure value of the current stress region, a current pressure value of the current stress region, a current average pressure value of a neighboring stress region of the current stress region.

[0011] In an embodiment, when the current pressure value of each stress region is adjusted in a set order: it is determined whether the pressure adjustment value is greater than a set adjustment threshold value; the current pressure value of the stress region greater than the set adjustment threshold value is adjusted in the set order.

[0012] In an embodiment, the division of the stack core into a plurality of stress regions comprises: the stack core is divided into a plurality of rectangular regions according to a preset grid, and each rectangular region corresponds to a stress region.

[0013] In an embodiment, the set order comprises: passing through each stress region in an order from top to bottom, and from left to right for odd rows and from right to left for even rows.

[0014] In an embodiment, after the current pressure value of the stress region is adjusted according to the pressure adjustment value of the stress region, the method further comprises: if the sum of the pressure adjustment values of all stress regions is greater than a convergence tolerance, repeatedly iteratively adjusting the current pressure value of each stress region until a set requirement is met.

[0015] In an embodiment, the method further comprises setting a maximum number of iterations, and if the requirement is not met after the maximum number of iterations, stopping the iteration.

[0016] In a second aspect, the embodiments of the present application further provide a device for adjusting the stress uniformity of a stack core, which comprises: a processing module configured to divide the stack core into a plurality of stress regions and obtain the pressure value of each stress region; an adjustment module configured to adjust the current pressure value of each stress region in a set order if the difference between the target pressure value and the current pressure value of any stress region is greater than a set error, and for a stress region, the pressure adjustment value of the stress region is obtained according to the target pressure value and the current pressure value of the stress region and the current pressure value of a neighboring stress region of the stress region, and the current pressure value of the stress region is adjusted according to the pressure adjustment value of the stress region; The iterative module is used to repeatedly iterate and adjust the current pressure value of each stress region until the set requirements are met if the sum of the pressure adjustment values ​​of each stress region is greater than the convergence tolerance.

[0017] Thirdly, embodiments of this application also provide a device for adjusting the uniformity of stress in the fuel cell stack core, comprising: An end plate is provided on the upper side of the fuel cell stack core, and the end plate is provided with a mounting groove that matches the stress area of ​​the fuel cell stack core. A pressurizing component is correspondingly disposed in the mounting slot and is used to adjust the current pressure value of the stress area.

[0018] Fourthly, embodiments of this application also provide a fuel cell stack core stress uniformity adjustment system, which includes the aforementioned fuel cell stack core stress uniformity adjustment device and the aforementioned fuel cell stack core stress uniformity adjustment equipment.

[0019] The beneficial effects of the technical solutions provided in this application include: When using this method to adjust the uniformity of stress on the fuel cell stack core, the stack core is first divided into multiple stress regions, and the pressure value of each stress region is obtained. If the difference between the target pressure value and the current pressure value of any stress region is greater than the set error, the current pressure value of each stress region is adjusted sequentially according to the set order. For a stress region, the pressure adjustment value of the stress region is obtained by using the target pressure value, the current pressure value of the stress region, and the current pressure value of the adjacent stress regions. The current pressure value of the stress region is adjusted according to the pressure adjustment value of the stress region. This method can quickly adjust the uniformity of stress on the fuel cell stack core, enabling it to quickly achieve uniform stress. It also considers the influence of each stress region on adjacent stress regions, resulting in better adjustment accuracy. This method solves the problem that in the existing technology, the performance test of the fuel cell stack essentially uses the uneven distribution of voltage to represent the uneven distribution of pressure, which has certain deviations in terms of equivalence. Furthermore, it is difficult to equate the uneven distribution of distribution at each location with the overall uneven distribution, making it difficult to improve the uniformity of stress on the fuel cell stack core. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of an embodiment of a device for adjusting the uniformity of force on the core of an electric fuel cell stack according to the present invention.

[0022] Figure 2 This is a schematic diagram of an embodiment of a device for adjusting the uniformity of force on the core of an electric fuel cell stack according to the present invention.

[0023] Figure 3 This is a schematic diagram of an embodiment of a device for adjusting the uniformity of force on the core of an electric fuel cell stack according to the present invention.

[0024] Figure 4 This is a schematic diagram of an embodiment of a device for adjusting the uniformity of force on the core of an electric fuel cell stack according to the present invention.

[0025] Figure 5 This is a schematic diagram of an embodiment of a device for adjusting the uniformity of force on the core of an electric fuel cell stack according to the present invention.

[0026] Figure 6 This is a schematic diagram of an embodiment of a device for adjusting the uniformity of force on the core of an electric fuel cell stack according to the present invention.

[0027] Figure 7 This is a schematic diagram of an embodiment of a device for adjusting the uniformity of force on the core of an electric fuel cell stack according to the present invention.

[0028] In the figure: 1. End plate; 11. Mounting groove; 12. Blind end plate; 13. Cage; 2. Pressurization assembly; 21. Pressure body; 22. Pressurization component; 3. Pressure strain gauge. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0030] First, some of the technical terms used in this application will be explained to help those skilled in the art understand this application.

[0031] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0032] In a first aspect, embodiments of this application provide a method for adjusting the uniformity of force on the fuel cell stack core.

[0033] In one embodiment, the method for adjusting the uniformity of stress on the fuel cell stack core includes: The fuel cell stack core is divided into multiple stress zones, and the pressure values ​​of each stress zone are obtained; If the difference between the target pressure value and the current pressure value of any stress area is greater than the set error, the current pressure value of each stress area is adjusted in the set order. For a stress area, the pressure adjustment value of the stress area is obtained by using the target pressure value and the current pressure value of the stress area, as well as the current pressure value of the adjacent stress areas. The current pressure value of the stress area is adjusted according to the pressure adjustment value of the stress area.

[0034] When using this method to adjust the uniformity of stress on the fuel cell stack core, the stack core is first divided into multiple stress regions, and the pressure value of each stress region is obtained. If the difference between the target pressure value and the current pressure value of any stress region is greater than the set error, the current pressure value of each stress region is adjusted sequentially according to the set order. For a stress region, the pressure adjustment value of the stress region is obtained by using the target pressure value, the current pressure value of the stress region, and the current pressure value of the adjacent stress regions. The current pressure value of the stress region is adjusted according to the pressure adjustment value of the stress region. This method can quickly adjust the uniformity of stress on the fuel cell stack core, enabling it to quickly achieve uniform stress. It also considers the influence of each stress region on adjacent stress regions, resulting in better adjustment accuracy. This method solves the problem that in the existing technology, the performance test of the fuel cell stack essentially uses the uneven distribution of voltage to represent the uneven distribution of pressure, which has certain deviations in terms of equivalence. Furthermore, it is difficult to equate the uneven distribution of distribution at each location with the overall uneven distribution, making it difficult to improve the uniformity of stress on the fuel cell stack core.

[0035] Further, in one embodiment, obtaining the pressure adjustment value of the stressed area using the target pressure value and current pressure value of the stressed area, as well as the current pressure value of the adjacent stressed areas, includes: Based on the current pressure values ​​of the adjacent pressure areas of the stress area, obtain the current average pressure value of the adjacent pressure areas of the stress area; Based on the target pressure value and current pressure value of the stressed area, as well as the current average pressure value of the adjacent stressed areas, the pressure adjustment value of the stressed area is obtained.

[0036] In this embodiment, the pressure adjustment value of the stressed area is obtained using the target pressure value and current pressure value of the stressed area, as well as the current pressure value of the adjacent stressed areas. Specifically, this includes: obtaining the current average pressure value of the adjacent stressed areas based on the current pressure value of the stressed area; and obtaining the pressure adjustment value of the stressed area based on the target pressure value and current pressure value of the stressed area, as well as the current average pressure value of the adjacent stressed areas. This allows for the rapid acquisition of the pressure adjustment value of the stressed area, thereby quickly adjusting the stress uniformity of the fuel cell stack core to achieve uniform stress. Furthermore, it considers the influence of each stressed area on adjacent stressed areas, resulting in better adjustment accuracy. This addresses the problem in existing technologies where fuel cell stack performance testing essentially represents pressure non-uniformity by the distribution of voltage non-uniformity, which has certain deviations in terms of equivalence. Moreover, it is difficult to equate the overall distribution non-uniformity from the distribution non-uniformity at each location, making it difficult to improve the stress uniformity of the fuel cell stack core.

[0037] Further, in one embodiment, obtaining the pressure adjustment value of the stressed area based on the target pressure value and current pressure value of the stressed area, and the current average pressure value of the adjacent stressed areas, includes: Based on the target pressure value and current pressure value of the stressed area, as well as the current average pressure value of the adjacent stressed areas, the difference between the target pressure value of the stressed area and the sum of the current pressure value of the stressed area and the current average pressure value of the adjacent stressed areas is obtained. Based on the target pressure value of the stressed area, the pressure adjustment value of the stressed area is obtained by the difference between the current pressure value of the stressed area and the sum of the current average pressure values ​​of the adjacent stressed areas.

[0038] In this embodiment, the pressure adjustment value of the stress-bearing area is obtained based on the target pressure value and the current pressure value of the stress-bearing area, as well as the current average pressure value of the adjacent stress-bearing areas. Specifically, this includes: obtaining the difference between the target pressure value of the stress-bearing area and the sum of the current pressure value of the stress-bearing area and the current average pressure value of the adjacent stress-bearing areas, based on the target pressure value of the stress-bearing area, the current pressure value of the stress-bearing area, and the current average pressure value of the adjacent stress-bearing areas; and then, based on the target pressure value of the stress-bearing area and the sum of the current pressure value of the stress-bearing area and the current average pressure value of the adjacent stress-bearing areas, the adjustment value is obtained. By taking the difference between the values ​​of the two values, the pressure adjustment value of the stressed area can be obtained quickly. This allows for rapid adjustment of the stress uniformity of the fuel cell stack core, enabling it to quickly achieve uniform stress. Furthermore, the influence of each stressed area on adjacent stressed areas is considered, resulting in better adjustment accuracy. This addresses the problem in existing technologies where fuel cell stack performance testing essentially represents pressure non-uniformity by the distribution of voltage non-uniformity. This approach has certain deviations in terms of equivalence, and it is difficult to equate the non-uniformity of distribution at each location with the overall non-uniformity, thus hindering the improvement of stress uniformity in the fuel cell stack core.

[0039] Furthermore, in one embodiment, according to the formula: Obtain the pressure adjustment value of the current stress-bearing area; in, This is the pressure adjustment value for the current stress-bearing area. To adjust the coefficient, The target pressure value for the current stress-bearing area is to be adjusted. To adjust the current pressure value of the stress-bearing area, This represents the current average pressure value of the adjacent stress areas of the currently adjusted stress area.

[0040] In this embodiment, according to the formula: Obtain the pressure adjustment value of the current stress-bearing area; where, This is the pressure adjustment value for the current stress-bearing area. To adjust the coefficient, The target pressure value for the current stress-bearing area is to be adjusted. To adjust the current pressure value of the stress-bearing area, This provides the current average pressure value of adjacent stress-bearing areas in the current stress-bearing area. It allows for rapid acquisition of pressure adjustment values ​​for each stress-bearing area, enabling quick adjustment of the stress uniformity within the fuel cell stack core. This achieves uniform stress distribution quickly and considers the influence of each stress-bearing area on adjacent areas, resulting in better adjustment accuracy. This addresses the problem in existing technologies where performance testing of the fuel cell stack essentially represents pressure non-uniformity through voltage distribution, leading to certain deviations in equivalence. Furthermore, it struggles to equate non-uniformity at individual locations with overall non-uniformity, hindering the improvement of stress uniformity within the fuel cell stack core.

[0041] Furthermore, in one embodiment, when adjusting the current pressure values ​​of each force-bearing region in a predetermined order: Determine if the pressure adjustment value is greater than the set adjustment threshold; Adjust the current pressure value of the stressed areas that are greater than the set adjustment threshold in a set order.

[0042] In this embodiment, when adjusting the current pressure value of each stress region in a predetermined order: first, it is determined whether the pressure adjustment value is greater than a predetermined adjustment threshold; then, the current pressure value of the stress regions that are greater than the predetermined adjustment threshold is adjusted in the predetermined order. If the obtained pressure adjustment value is less than the predetermined adjustment threshold, since the pressure adjustment value has little impact on the overall uniformity of stress, the stress regions with pressure adjustment values ​​less than the predetermined adjustment threshold can be skipped, and other stress regions can be adjusted instead.

[0043] Furthermore, in one embodiment, dividing the fuel cell stack core into multiple stress-bearing regions includes: The fuel cell stack core is divided into multiple rectangular regions according to a preset grid, and each rectangular region corresponds to a stress-bearing region.

[0044] In this embodiment, the fuel cell stack core is divided into multiple stress regions. Specifically, the fuel cell stack core is divided into multiple rectangular regions according to a preset grid. Each rectangular region corresponds to a stress region, which is more in line with the arrangement habits of fuel cell stack cores.

[0045] In this example, the adjacent stress regions of the stress region include the four stress regions corresponding to the four sides of the selected stress region, which is more in line with the arrangement habits of fuel cell stack cells.

[0046] Furthermore, in one embodiment, the setting order is as follows: The force is applied to each stress area in the following order: from top to bottom, with odd-numbered rows from left to right and even-numbered rows from right to left.

[0047] In this embodiment, the force-bearing regions are traversed in a top-to-bottom order, with odd-numbered rows from left to right and even-numbered rows from right to left. This serpentine traversal reduces redundant adjustments in local areas and improves convergence speed. It ensures that surrounding planes are updated to the latest values ​​during the adjustment of each plane. Through a symmetrical and efficient information propagation path, maximizing the use of the latest data, and reducing oscillations between iterations, this approach is significantly superior to the traditional unidirectional traversal order. In iterative adjustments of complex systems, it effectively accelerates convergence, improves computational efficiency, and enhances process stability.

[0048] Furthermore, in one embodiment, after adjusting the current pressure value of the force-bearing region according to the pressure adjustment value of the force-bearing region, the method further includes: if the sum of the pressure adjustment values ​​of each force-bearing region is greater than the convergence tolerance, repeatedly iteratively adjusting the current pressure value of each force-bearing region until the set requirements are met.

[0049] In this embodiment, after adjusting the current pressure value of the stressed area according to the pressure adjustment value of the stressed area, if the sum of the pressure adjustment values ​​of each stressed area is greater than the convergence tolerance, the current pressure value of each stressed area is iteratively adjusted repeatedly until the set requirements are met. This iterative adjustment is repeated multiple times to further improve the pressure uniformity. The adjustment speed is fast, allowing it to quickly achieve uniform force. Furthermore, the influence of each stressed area on adjacent stressed areas is considered, resulting in better adjustment accuracy. This solves the problem in the prior art where the performance test of the fuel cell stack essentially represents the uneven distribution of pressure by the uneven distribution of voltage. This has certain deviations in terms of equivalence, and it is difficult to equate the uneven distribution of distribution at each location with the overall uneven distribution, making it difficult to improve the uniformity of force on the fuel cell stack core.

[0050] In this example, the requirement is that the sum of the pressure adjustment values ​​of each stress zone is less than or equal to the convergence tolerance.

[0051] Furthermore, in one embodiment, a maximum number of iterations is set, and if the requirement is not met after the maximum number of iterations, the iteration is stopped.

[0052] This embodiment also includes setting a maximum number of iterations. If the requirement is not met after iterating to the maximum number of iterations, the iteration stops. If the sum of the pressure adjustment values ​​of each stress region is always greater than the convergence tolerance, the iteration stops after reaching the maximum number of iterations to prevent getting stuck in an infinite loop. In practical applications, to ensure the controllability of the algorithm, a maximum number of iterations must be set as one of the termination conditions. If the system iterates to the preset maximum number of iterations and still fails to meet the convergence tolerance requirement—that is, the sum of the pressure adjustment values ​​of each stress region never drops below the convergence tolerance—then the iteration should be forcibly stopped. This mechanism can effectively prevent the algorithm from getting stuck in an infinite loop due to model complexity, abnormal boundary conditions, or overly stringent convergence conditions, ensuring that the calculation process is completed within a finite time, while prompting the user to check the rationality of the model or adjust the convergence threshold. It is a necessary safety measure introduced for engineering practice while pursuing convergence efficiency.

[0053] Secondly, this application provides a device for adjusting the uniformity of stress in the fuel cell stack core, comprising: The processing module is used to divide the fuel cell stack core into multiple stress zones and obtain the pressure value of each stress zone. The adjustment module is used to adjust the current pressure value of each force area in a set order if the difference between the target pressure value and the current pressure value of any force area is greater than the set error. For a force area, the adjustment module obtains the pressure adjustment value of the force area by using the target pressure value and the current pressure value of the force area, as well as the current pressure value of the adjacent force areas. The current pressure value of the force area is adjusted according to the pressure adjustment value of the force area. The iterative module is used to repeatedly iterate and adjust the current pressure value of each stress region until the set requirements are met if the sum of the pressure adjustment values ​​of each stress region is greater than the convergence tolerance.

[0054] When using this method to adjust the uniformity of stress on the fuel cell stack core, the stack core is first divided into multiple stress regions, and the pressure value of each stress region is obtained. If the difference between the target pressure value and the current pressure value of any stress region is greater than the set error, the current pressure value of each stress region is adjusted sequentially according to the set order. For a stress region, the pressure adjustment value of the stress region is obtained by using the target pressure value, the current pressure value of the stress region, and the current pressure value of the adjacent stress regions. The current pressure value of the stress region is adjusted according to the pressure adjustment value of the stress region. This method can quickly adjust the uniformity of stress on the fuel cell stack core, enabling it to quickly achieve uniform stress. It also considers the influence of each stress region on adjacent stress regions, resulting in better adjustment accuracy. This method solves the problem that in the existing technology, the performance test of the fuel cell stack essentially uses the uneven distribution of voltage to represent the uneven distribution of pressure, which has certain deviations in terms of equivalence. Furthermore, it is difficult to equate the uneven distribution of distribution at each location with the overall uneven distribution, making it difficult to improve the uniformity of stress on the fuel cell stack core.

[0055] The functions of each module in the above-mentioned fuel cell stack core stress uniformity adjustment device correspond to the steps in the above-mentioned fuel cell stack core stress uniformity adjustment method embodiment, and their functions and implementation processes will not be described in detail here.

[0056] The control module can be a personal computer (PC), laptop, server, or other device with data processing capabilities.

[0057] In this embodiment of the application, a device for adjusting the uniformity of stress on the core of an electric fuel cell stack may include a processor, a memory, a communication interface, and a communication bus.

[0058] The communication bus can be of any type and is used to interconnect the processor, memory, and communication interface.

[0059] The communication interface includes input / output (I / O) interfaces, physical interfaces, and logical interfaces used for interconnecting devices within the fuel cell stack core stress uniformity adjustment device, as well as interfaces used for interconnecting the fuel cell stack core stress uniformity adjustment device with other devices (such as other computing devices or user equipment). Physical interfaces can be Ethernet interfaces, fiber optic interfaces, ATM interfaces, etc.; user equipment can be displays, keyboards, etc.

[0060] Memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical storage, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.

[0061] The processor can be a general-purpose processor, which can call the fuel cell core stress uniformity adjustment program stored in the memory and execute the fuel cell core stress uniformity adjustment method provided in the embodiments of this application. For example, the general-purpose processor can be a central processing unit (CPU). The method executed when the fuel cell core stress uniformity adjustment program is called can refer to the various embodiments of the fuel cell core stress uniformity adjustment method of this application, and will not be repeated here.

[0062] like Figure 1 and Figure 2 As shown, in a third aspect, embodiments of this application also provide a device for adjusting the uniformity of stress on the fuel cell stack core, comprising: End plate 1, which is used to be installed on the upper side of the fuel cell stack core, and the end plate 1 is provided with a mounting groove 11 that matches the stress area of ​​the fuel cell stack core; The pressurization component 2 is installed in the mounting slot 11 and is used to adjust the current pressure value of the force-bearing area.

[0063] When using this method to adjust the uniformity of stress on the fuel cell stack core, the stack core is first divided into multiple stress regions, and the pressure value of each stress region is obtained. If the difference between the target pressure value and the current pressure value of any stress region is greater than the set error, the current pressure value of each stress region is adjusted sequentially according to the set order. For a stress region, the pressure adjustment value of the stress region is obtained by using the target pressure value, the current pressure value of the stress region, and the current pressure value of the adjacent stress regions. The current pressure value of the stress region is adjusted according to the pressure adjustment value of the stress region. The pressurization component 2 can quickly adjust the uniformity of stress on the fuel cell stack core, so that it can quickly achieve uniform stress. It also takes into account the influence of each stress region on the adjacent stress regions, and the adjustment accuracy is better. It solves the problem that in the existing technology, the performance test of the fuel cell stack is essentially represented by the uneven distribution of voltage to represent the uneven distribution of pressure. There is a certain deviation in the equivalence relationship, and it is difficult to equate the uneven distribution of distribution at each position to the overall uneven distribution. This makes it difficult to improve the uniformity of stress on the fuel cell stack core.

[0064] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in this example, the pressurizing assembly 2 includes a pressure body 21 and a pressurizing component 22. The pressure body 21 contacts the force-bearing area, and the pressurizing component 22 is disposed on the pressure body 21 and extends into the pressure body 21. The applied pressure is changed by altering the length of the pressurizing component 22 extending into the pressure body 21. The end plate 1 includes a blind end plate 12 and a retainer 13. The retainer 13 has a mounting groove 11, and the blind end plate 12 has a hole for the pressurizing component 22 to extend into. During assembly, the retainer 13 is installed first, then the pressure body 21 is inserted, the blind end plate 12 is installed, and finally the pressurizing component 22 extends into the pressure body 21 through the hole.

[0065] like Figure 7 As shown, in this example, the pressure strain gauge 3 is installed in the stress area, and the pressure value of each stress area is detected by the pressure strain gauge 3.

[0066] Fourthly, embodiments of this application also provide a fuel cell stack core stress uniformity adjustment system, which includes the aforementioned fuel cell stack core stress uniformity adjustment device and the aforementioned fuel cell stack core stress uniformity adjustment equipment.

[0067] When using this method to adjust the uniformity of stress on the fuel cell stack core, the stack core is first divided into multiple stress regions, and the pressure value of each stress region is obtained. If the difference between the target pressure value and the current pressure value of any stress region is greater than the set error, the current pressure value of each stress region is adjusted sequentially according to the set order. For a stress region, the pressure adjustment value of the stress region is obtained by using the target pressure value, the current pressure value of the stress region, and the current pressure value of the adjacent stress regions. The current pressure value of the stress region is adjusted according to the pressure adjustment value of the stress region. This method can quickly adjust the uniformity of stress on the fuel cell stack core, enabling it to quickly achieve uniform stress. It also considers the influence of each stress region on adjacent stress regions, resulting in better adjustment accuracy. This method solves the problem that in the existing technology, the performance test of the fuel cell stack essentially uses the uneven distribution of voltage to represent the uneven distribution of pressure, which has certain deviations in terms of equivalence. Furthermore, it is difficult to equate the uneven distribution of distribution at each location with the overall uneven distribution, making it difficult to improve the uniformity of stress on the fuel cell stack core.

[0068] Specifically, the aforementioned fuel cell stack core stress uniformity adjustment device controls the aforementioned fuel cell stack core stress adjustment equipment to adjust the stress on the fuel cell stack core.

[0069] Fifthly, embodiments of this application also provide a computer-readable storage medium.

[0070] The present application stores a program for adjusting the uniformity of stress on the fuel cell stack core on a computer-readable storage medium, wherein when the program for adjusting the uniformity of stress on the fuel cell stack core is executed by a processor, the steps of the method for adjusting the uniformity of stress on the fuel cell stack core as described above are implemented.

[0071] The method implemented when the fuel cell stack core stress uniformity adjustment procedure is executed can be referred to in various embodiments of the fuel cell stack core stress uniformity adjustment method of this application, and will not be repeated here.

[0072] It should be noted that the sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0073] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus. The terms "first," "second," and "third," etc., are used to distinguish different objects, etc., and do not indicate a sequence, nor do they limit "first," "second," and "third" to different types.

[0074] In the description of the embodiments of this application, terms such as "exemplary," "for example," or "for instance" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplary," "for example," or "for instance" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary," "for example," or "for instance" is intended to present the relevant concepts in a concrete manner.

[0075] In the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The "and / or" in the text is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of this application, "multiple" means two or more.

[0076] In some processes described in the embodiments of this application, multiple operations or steps are included in a specific order. However, it should be understood that these operations or steps may not be executed in the order they appear in the embodiments of this application, or they may be executed in parallel. The sequence number of the operation is only used to distinguish different operations, and the sequence number itself does not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed sequentially or in parallel, and these operations or steps may be combined.

[0077] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device to execute the methods described in the various embodiments of this application.

[0078] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A method for adjusting the uniformity of stress in the core of an electric fuel cell stack, characterized in that, include: The fuel cell stack core is divided into multiple stress zones, and the pressure values ​​of each stress zone are obtained; If the difference between the target pressure value and the current pressure value of any stress area is greater than the set error, the current pressure value of each stress area is adjusted in the set order. For a stress area, the pressure adjustment value of the stress area is obtained by using the target pressure value and the current pressure value of the stress area, as well as the current pressure value of the adjacent stress areas. The current pressure value of the stress area is adjusted according to the pressure adjustment value of the stress area.

2. The method for adjusting the uniformity of stress in the fuel cell stack core as described in claim 1, characterized in that, The method of obtaining the pressure adjustment value of the stressed area using the target pressure value and current pressure value of the stressed area, as well as the current pressure value of the adjacent stressed areas, includes: Based on the current pressure values ​​of the adjacent pressure areas of the stress area, obtain the current average pressure value of the adjacent pressure areas of the stress area; Based on the target pressure value and current pressure value of the stressed area, as well as the current average pressure value of the adjacent stressed areas, the pressure adjustment value of the stressed area is obtained.

3. The method for adjusting the uniformity of stress in the fuel cell stack core as described in claim 2, characterized in that, The method of obtaining the pressure adjustment value of the stress area based on the target pressure value and current pressure value of the stress area, as well as the current average pressure value of the adjacent stress areas, includes: Based on the target pressure value and current pressure value of the stressed area, as well as the current average pressure value of the adjacent stressed areas, the difference between the target pressure value of the stressed area and the sum of the current pressure value of the stressed area and the current average pressure value of the adjacent stressed areas is obtained. Based on the target pressure value of the stressed area, the pressure adjustment value of the stressed area is obtained by the difference between the current pressure value of the stressed area and the sum of the current average pressure values ​​of the adjacent stressed areas.

4. The method for adjusting the uniformity of stress in the fuel cell stack core as described in claim 3, characterized in that, According to the formula: Obtain the pressure adjustment value of the current stress-bearing area; in, This is the pressure adjustment value for the current stress-bearing area. To adjust the coefficient, The target pressure value for the current stress-bearing area is to be adjusted. To adjust the current pressure value of the stress-bearing area, This represents the current average pressure value of the adjacent stress areas of the currently adjusted stress area.

5. The method for adjusting the uniformity of stress in the fuel cell stack core as described in claim 1, characterized in that, When adjusting the current pressure values ​​of each stress zone in a set order: Determine if the pressure adjustment value is greater than the set adjustment threshold; Adjust the current pressure value of the stressed areas that are greater than the set adjustment threshold in a set order.

6. The method for adjusting the uniformity of stress in the fuel cell stack core as described in claim 1, characterized in that, The division of the fuel cell stack core into multiple stress-bearing regions includes: The fuel cell stack core is divided into multiple rectangular regions according to a preset grid, and each rectangular region corresponds to a stress-bearing region.

7. The method for adjusting the uniformity of stress in the fuel cell stack core as described in claim 6, characterized in that, The specified order of settings: The force is applied to each stress area in the following order: from top to bottom, with odd-numbered rows from left to right and even-numbered rows from right to left.

8. The method for adjusting the uniformity of stress in the fuel cell stack core as described in claim 1, characterized in that, After adjusting the current pressure value of the stress area based on the pressure adjustment value of the stress area, the method further includes: if the sum of the pressure adjustment values ​​of each stress area is greater than the convergence tolerance, repeatedly iteratively adjust the current pressure value of each stress area until the set requirements are met.

9. The method for adjusting the uniformity of stress in the fuel cell stack core as described in claim 8, characterized in that, It also includes setting a maximum number of iterations; if the requirements are not met after the maximum number of iterations, the iteration stops.

10. A device for adjusting the uniformity of force on the fuel cell stack core, characterized in that, include: The processing module is used to divide the fuel cell stack core into multiple stress zones and obtain the pressure value of each stress zone. The adjustment module is used to adjust the current pressure value of each force area in a set order if the difference between the target pressure value and the current pressure value of any force area is greater than the set error. For a force area, the adjustment module obtains the pressure adjustment value of the force area by using the target pressure value and the current pressure value of the force area, as well as the current pressure value of the adjacent force areas. The current pressure value of the force area is adjusted according to the pressure adjustment value of the force area. The iterative module is used to repeatedly iterate and adjust the current pressure value of each stress region until the set requirements are met if the sum of the pressure adjustment values ​​of each stress region is greater than the convergence tolerance.

11. A device for adjusting the uniformity of stress in the core of an electric fuel cell stack, characterized in that, include: End plate (1), which is used to be installed on the upper side of the fuel cell stack core, and the end plate (1) is provided with a mounting groove (11) that matches the stress area of ​​the fuel cell stack core. The pressurization component (2) is correspondingly disposed in the mounting groove (11) and is used to adjust the current pressure value of the force-bearing area.

12. A system for adjusting the uniformity of stress in the core of an electric fuel cell stack, characterized in that, It includes the fuel cell stack core stress uniformity adjustment device as described in claim 10 and the fuel cell stack core stress uniformity adjustment equipment as described in claim 11.

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