Method for analyzing flow channel and flow field structures of flow battery, and device and storage medium

Abstract

The present application relates to a method for analyzing flow channel and flow field structures of a flow battery, and a device and a storage medium. The method comprises: for a mainstream region structure, determining a target first design parameter of each flow channel in the mainstream region structure on the basis of first design parameters of each flow channel in the mainstream region structure and a first relationship between a bypass current loss and a flow resistance loss; for a distribution region structure, determining a target second design parameter of each flow channel in the distribution region structure on the basis of second design parameters of each flow channel in the distribution region structure and a second relationship between a flow rate deviation of the flow channel and a flow resistance loss; and for a reaction region structure, determining a target third design parameter of a reaction region on the basis of third design parameters of the reaction region structure and a third relationship between the minimum concentration deviation of a conductor in the reaction region structure and concentration polarization.

Description

Analysis methods, equipment, and storage media for flow battery flow channels and flow field structures

[0001] Related applications

[0002] This application claims priority to Chinese patent application filed on December 6, 2024, application number 2024117882050, entitled "Analysis Method, Apparatus and Storage Medium for Flow Battery Flow Channel and Flow Field Structure", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of flow battery technology, and in particular to a method, apparatus and storage medium for analyzing the flow channel and flow field structure of a flow battery. Background Technology

[0004] A flow battery is an energy storage device that uses a circulating pump to complete a redox reaction in the electrolyte within the battery stack, converting electrical energy into chemical energy. It offers advantages such as intrinsic safety, long lifespan, and suitability for large-capacity and long-term energy storage. During operation, a sufficient amount of active material is required to participate in the reaction and reduce voltage loss due to concentration polarization. However, at the end of the charge / discharge cycle of high-power battery stacks or under high current density conditions, concentration polarization is the primary form of voltage loss.

[0005] Traditional design methods for flow battery structures primarily rely on experience and experimental parameters, or refer to fuel cell structural designs. Flow battery structural design often focuses on product sealing, neglecting to consider how to improve flow battery performance and reduce concentration polarization.

[0006] Optimizing the flow field structure of flow batteries to reduce concentration polarization remains a pressing issue. Summary of the Invention

[0007] Therefore, it is necessary to provide an analysis method, device, and storage medium for the flow channel and flow field structure of a flow battery to address the above-mentioned technical problems.

[0008] In a first aspect, this application provides an analysis method for the flow channel and flow field structure of a flow battery, the method comprising:

[0009] For the mainstream region structure in the flow channel and flow field structure of the flow battery, the target first design parameter of each flow channel in the mainstream region structure is determined according to the first design parameter of each flow channel in the mainstream region structure, the first relationship between bypass current loss and flow resistance loss, the preset bypass current loss and the preset first flow resistance loss; wherein, the first design parameter includes at least one of the flow channel length, flow channel width or flow channel depth of the mainstream region structure.

[0010] For the distribution zone structure in the flow channel and flow field structure of the flow battery, the target second design parameters of each flow channel in the distribution zone structure are determined according to the second design parameters of each flow channel in the distribution zone structure, the second relationship between the flow deviation and flow resistance loss of the flow channel, the preset flow deviation and the preset second flow resistance loss; wherein, the second design parameters include at least one of the following: the flow channel length of the distribution zone structure, the flow channel width of the distribution zone structure, the spacing between adjacent flow channels of the distribution zone structure, or the number of flow channels of the distribution zone structure;

[0011] For the reaction zone structure in the flow channel and flow field structure of a flow battery, the target third design parameters of the reaction zone are determined based on the third design parameters of the reaction zone structure, the third relationship between the minimum concentration deviation and concentration polarization of the conductor in the reaction zone structure, the preset concentration deviation, and the preset concentration polarization. The third design parameters include at least one of the following: flow channel shape, number of flow channels, flow channel width, flow channel length, length of the liquid equalization buffer port, width of the liquid equalization buffer port, length of the liquid distribution channel inlet, or width of the compensation channel inlet. The conductor is a conductive liquid.

[0012] In one embodiment, the first relationship includes the relationship between the first design parameters and the bypass current loss, and also includes the relationship between the first design parameters and the current resistance loss; the method further includes:

[0013] Based on the first design parameters, an equivalent circuit model and a first flow resistance calculation model are established for each flow channel in the mainstream region structure.

[0014] For each flow channel in the mainstream region structure, the assumed first design parameters are applied to the equivalent circuit model, and the usage process of the mainstream region structure is simulated to obtain the simulated bypass current loss; based on the assumed first design parameters and the simulated bypass current loss, the relationship between the first design parameters and the bypass current loss is obtained.

[0015] For each flow channel in the mainstream region structure, the assumed first design parameters are applied to the first flow resistance calculation model, and the usage process of the mainstream region structure is simulated to obtain the simulated flow resistance loss; based on the assumed first design parameters and the simulated flow resistance loss, the relationship between the first design parameters and the flow resistance loss is obtained.

[0016] In one embodiment, the first design parameters include the channel length and channel width of the mainstream region structure, and the step of establishing an equivalent circuit model for each channel in the mainstream region structure based on the first design parameters includes:

[0017] For each flow channel in the mainstream region structure, a resistance model of the flow channel is established based on the conductor length, conductor cross-sectional area, and conductor resistivity in the flow channel;

[0018] Based on the resistance model of the flow channel, the flow channel length of the mainstream region structure, the flow channel width of the mainstream region structure, and the number of stack layers in the flow battery, an equivalent circuit model of the flow channel is established.

[0019] In one embodiment, the first design parameters include the flow channel length, flow channel width, and flow channel depth of the mainstream region structure. Based on these first design parameters, a first flow resistance calculation model is established for each flow channel in the mainstream region structure, including:

[0020] For each channel in the mainstream structure, a first flow resistance calculation model for the mainstream structure is established based on the channel width, channel depth, channel length, conductor resistivity in the mainstream structure, average flow velocity of the conductor in the mainstream structure, and friction coefficient.

[0021] In one embodiment, the second relationship includes the relationship between the second design parameter and the flow rate deviation, and the relationship between the second design parameter and the flow resistance loss; the method further includes:

[0022] A first equivalent structural model of the distribution area structure is established based on the second design parameters, and a second flow resistance calculation model of each flow channel in the distribution area structure is established based on the second design parameters.

[0023] Multiple hypothetical second design parameters are applied to the first equivalent structural model, and the usage process of the distribution area structure is simulated to obtain multiple simulated flow deviations for the conductors in the distribution area structure; based on the multiple different second design parameters and the multiple simulated flow deviations, the relationship between the second design parameters and the flow deviations is determined.

[0024] For each flow channel in the distribution area structure, the assumed second design parameters are applied to the second flow resistance calculation model, and the usage process of the distribution area structure is simulated to obtain the simulated flow resistance loss; based on the assumed second design parameters and the simulated flow resistance loss, the relationship between the second design parameters and the flow resistance loss is determined.

[0025] In one embodiment, the process of using the simulated distribution area structure yields multiple simulated flow deviations for the conductors in the distribution area structure, including:

[0026] The usage process of the distribution zone structure is simulated to obtain the simulated maximum and minimum flow rates of the conductors in the distribution zone structure;

[0027] The simulated flow deviation is obtained based on the simulated maximum flow and simulated minimum flow.

[0028] In one embodiment, the method further includes:

[0029] A second equivalent structural model of the reaction zone structure is established based on the third design parameters, and the assumed third design parameters are applied to the second equivalent structural model.

[0030] For each of the assumed third design parameters, the concentration distribution data of the conductors in the reaction zone structure are simulated and obtained.

[0031] For each concentration distribution data point, the simulated minimum concentration of the conductor in the reaction zone structure and the simulated concentration of the conductor at the outlet are determined based on the concentration distribution data; the simulated minimum concentration deviation of the conductor in the reaction zone structure is determined based on the simulated minimum concentration deviation; and the simulated concentration polarization is determined based on the simulated minimum concentration deviation.

[0032] The third relationship is determined based on the assumed third design parameters, the simulated minimum concentration deviation corresponding to each of the assumed third design parameters, and the simulated concentration polarization corresponding to each of the assumed third design parameters.

[0033] Secondly, this application provides an analytical apparatus for the flow channel and flow field structure of a flow battery, the apparatus comprising:

[0034] The first processing module is used to determine the target first design parameters of each flow channel in the mainstream region structure for the flow channel and flow field structure of the flow battery, based on the first design parameters of each flow channel in the mainstream region structure, the first relationship between bypass current loss and flow resistance loss, the preset bypass current loss and the preset first flow resistance loss; wherein, the first design parameters include at least one of the flow channel length, flow channel width or flow channel depth of the mainstream region structure;

[0035] The second processing module is used to determine the target second design parameters for each flow channel in the distribution area structure of the flow battery, based on the second design parameters of each flow channel in the distribution area structure, the second relationship between the flow deviation and the flow resistance loss of the flow channel, and the preset flow deviation and the preset second flow resistance loss; wherein the second design parameters include at least one of the following: the flow channel length of the distribution area structure, the flow channel width of the distribution area structure, the spacing between adjacent flow channels of the distribution area structure, or the number of flow channels of the distribution area structure;

[0036] The third processing module is used to determine the target third design parameters of the reaction zone structure in the flow channel and flow field structure of the flow battery, based on the third design parameters of the reaction zone structure, the third relationship between the minimum concentration deviation and concentration polarization of the conductor in the reaction zone structure, and the preset concentration deviation and preset concentration polarization. The third design parameters include at least one of the following in the reaction zone structure: flow channel shape, number of flow channels, flow channel width, flow channel length, length of the liquid equalization buffer port, width of the liquid equalization buffer port, length of the liquid distribution channel inlet, or width of the compensation channel inlet. The conductor is a conductive liquid.

[0037] In one embodiment, the first relationship includes the relationship between the first design parameters and the bypass current loss, and also includes the relationship between the first design parameters and the current resistance loss; the first processing module is further configured to: establish an equivalent circuit model and a first current resistance calculation model for each flow channel in the mainstream structure based on the first design parameters; apply the assumed first design parameters to the equivalent circuit model for each flow channel in the mainstream structure, and simulate the usage process of the mainstream structure to obtain the simulated bypass current loss; obtain the relationship between the first design parameters and the bypass current loss based on the assumed first design parameters and the simulated bypass current loss; apply the assumed first design parameters to the first current resistance calculation model for each flow channel in the mainstream structure, and simulate the usage process of the mainstream structure to obtain the simulated current resistance loss; obtain the relationship between the first design parameters and the current resistance loss based on the assumed first design parameters and the simulated current resistance loss.

[0038] In one embodiment, the first design parameters include the flow channel length and the flow channel width of the mainstream region structure. Based on the first design parameters, an equivalent circuit model of each flow channel in the mainstream region structure is established. The first processing module is further configured to: for each flow channel in the mainstream region structure, establish a resistance model of the flow channel based on the conductor length, conductor cross-sectional area, and conductor resistivity; and establish an equivalent circuit model of the flow channel based on the resistance model of the flow channel, the flow channel length of the mainstream region structure, the flow channel width of the mainstream region structure, and the number of stack layers in the flow battery.

[0039] In one embodiment, the first design parameters include the flow channel length, flow channel width, and flow channel depth of the mainstream region structure. Based on the first design parameters, a first flow resistance calculation model is established for each flow channel in the mainstream region structure. The first processing module is further configured to: for each flow channel in the mainstream region structure, establish a first flow resistance calculation model for the flow channel of the mainstream region structure based on the flow channel width, flow channel depth, flow channel length, conductor resistivity in the flow channel of the mainstream region structure, average flow velocity of the conductor in the flow channel of the mainstream region structure, and friction coefficient.

[0040] In one embodiment, the second relationship includes the relationship between the second design parameters and the flow deviation, and the relationship between the second design parameters and the flow resistance loss; the second processing module is further configured to: establish a first equivalent structural model of the distribution area structure based on the second design parameters; establish a second flow resistance calculation model for each flow channel in the distribution area structure based on the second design parameters; apply multiple assumed second design parameters to the first equivalent structural model and simulate the usage process of the distribution area structure to obtain multiple simulated flow deviations for the conductors in the distribution area structure; determine the relationship between the second design parameters and the flow deviations based on the multiple different second design parameters and the multiple simulated flow deviations; apply the assumed second design parameters to the second flow resistance calculation model for each flow channel in the distribution area structure and simulate the usage process of the distribution area structure to obtain simulated flow resistance loss; determine the relationship between the second design parameters and the flow resistance loss based on the assumed second design parameters and the simulated flow resistance loss.

[0041] Thirdly, this application 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 implement the steps of the method described in the first aspect.

[0042] Fourthly, this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method described in the first aspect.

[0043] Fifthly, this application provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the method described in the first aspect.

[0044] Details of one or more embodiments of this application are set forth in the following drawings and description. Other features, objects, and advantages of this application will become apparent from the specification, drawings, and claims. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the disclosed drawings without creative effort.

[0046] Figure 1 shows the application environment of the analysis method for the flow channel and flow field structure of a flow battery in one embodiment;

[0047] Figure 2 is a flowchart illustrating the analysis method of the flow channel and flow field structure of a flow battery in one embodiment;

[0048] Figure 3 is a schematic diagram of the flow channel structure of a flow battery in one embodiment;

[0049] Figure 4 is a partial schematic diagram of the reaction zone structure in the flow channel and flow field structure of a flow battery in one embodiment;

[0050] Figure 5 is a partial flowchart of the analysis method for the flow channel and flow field structure of a flow battery in one embodiment.

[0051] Figure 6 is a schematic diagram showing the relationship between channel length and current efficiency in one embodiment;

[0052] Figure 7 is a schematic diagram showing the relationship between channel width and current efficiency in one embodiment;

[0053] Figure 8 is a schematic diagram showing the relationship between channel length and flow resistance loss in one embodiment;

[0054] Figure 9 is a schematic diagram showing the relationship between the channel width and flow resistance loss in one embodiment;

[0055] Figure 10 is a partial flowchart of the analysis method for the flow channel and flow field structure of a flow battery in one embodiment;

[0056] Figure 11 is a partial flowchart of the analysis method for the flow channel and flow field structure of a flow battery in another embodiment;

[0057] Figure 12 is a partial schematic diagram of the reaction zone structure in the flow channel and flow field structure of a flow battery in one embodiment;

[0058] Figure 13 is a partial schematic diagram of the reaction zone structure in the flow channel and flow field structure of another embodiment of the flow battery;

[0059] Figure 14 is a structural block diagram of the analysis device for the flow channel and flow field structure of a flow battery in one embodiment;

[0060] Figure 15 is an internal structure diagram of a computer device in one embodiment. Detailed Implementation

[0061] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0062] The analysis method for the flow channel and flow field structure of the flow battery provided in this application embodiment can be applied to the application environment shown in Figure 1. The terminal 102 communicates with the server 104 via a network. The data storage system can store the data that the server 104 needs to process. The data storage system can be integrated on the server 104, or it can be located in the cloud or on other network servers. The server 104 can be a standalone physical server, a server cluster or distributed system composed of multiple physical servers, or a cloud server providing cloud computing services.

[0063] In an exemplary embodiment, as shown in FIG2, an analysis method for the flow channel and flow field structure of a flow battery is provided.

[0064] This method is used to analyze the flow channel structure of a flow battery. Referring to Figure 3, the flow battery flow channel structure provided in this embodiment includes two main flow zones, two distribution zones, and a reaction zone. This flow battery flow channel structure includes an inlet side and an outlet side of the electrode frame. The inlet side is provided with the main flow zone structure and the distribution zone structure, and the outlet side is provided with the main flow zone structure and the distribution zone structure. The conductor (i.e., the conductive liquid) enters from the inlet side, flows to the outlet side, and finally flows out through the outlet side. The distribution zone structure is connected to the main flow zone structure, and the reaction zone structure is connected to the distribution zone structure. The main flow zone structure includes multiple flow channels, and the reaction zone structure includes multiple flow channels. The distribution zone structure includes multiple openings, which refer to the openings of the flow channels. This flow battery flow channel structure also includes a reaction zone electrode plate, a reaction zone end, a reaction zone inlet, a distribution channel inlet, and an inner edge of the distribution channel.

[0065] In Figure 3, W represents the width of the flow channel in the reaction zone structure, L1 represents the spacing width between adjacent flow channels with their inlets on the same side in the reaction zone structure, and L3 represents the width of the flow channel in the reaction zone structure.

[0066] Taking the application of this method to terminal 102 in Figure 1 as an example, the method includes the following steps 201 to 203. Wherein:

[0067] Step 201: For the main flow region structure in the flow channel and flow field structure of the flow battery, determine the target first design parameters of each flow channel in the main flow region structure based on the first design parameters of each flow channel in the main flow region structure, the first relationship between bypass current loss and flow resistance loss, the preset bypass current loss and the preset first flow resistance loss.

[0068] Bypass current, also known as leakage current, is the extra current flow caused by factors such as materials, design, or temperature. This current does not participate in the normal operation of the main circuit but consumes energy and may lead to circuit instability and reduced efficiency. Bypass current loss is the energy loss caused by this extra current flow. The bypass current loss described in this step refers to the bypass current loss in the main current region structure.

[0069] Flow resistance loss, also known as flow drag loss, is the energy loss of a fluid during flow due to factors such as friction, collision, and eddies. The flow resistance loss described in this step refers to the flow resistance loss of the mainstream structure.

[0070] The first design parameter includes at least one of the following: the flow channel length of the mainstream region structure, the flow channel width of the mainstream region structure, or the flow channel depth of the mainstream region structure. The first relationship includes the relationship between the first design parameter and bypass current loss, and the relationship between the first design parameter and flow resistance loss.

[0071] This first relationship can be obtained through extensive simulation experiments. For example, after constructing an equivalent circuit model of the main flow region structure based on the first design parameters, and then applying the assumed first design parameters to this equivalent circuit model, the operation of the main flow region structure can be simulated based on the equivalent circuit model to obtain the simulated bypass current loss and current resistance loss. After performing multiple simulations, based on the assumed first design parameters and the simulated bypass current loss and current resistance loss, the relationship between the first design parameters and the bypass current loss, as well as the relationship between the first design parameters and the current resistance loss, can be obtained.

[0072] The preset bypass current loss and the preset first current resistance loss can both be set according to actual needs, and this embodiment does not impose any limitations. Optionally, the preset bypass current loss is 5%, and the preset first current resistance loss is 10 kPa.

[0073] If, in a certain simulation, the simulated bypass current loss is less than the preset bypass current loss, and the simulated current resistance loss is less than the first current resistance loss, then the assumed first design parameter used in that simulation shall be taken as the target first design parameter.

[0074] Step 202: For the distribution zone structure in the flow channel and flow field structure of the flow battery, the target second design parameters of each flow channel in the distribution zone structure are determined according to the second design parameters of each flow channel in the distribution zone structure, the second relationship between the flow deviation and flow resistance loss of the flow channel, the preset flow deviation and the preset second flow resistance loss.

[0075] The second design parameter includes at least one of the following: the channel width of the distribution area structure, the spacing between adjacent channels of the distribution area structure, or the number of channels of the distribution area structure.

[0076] Flow deviation refers to the difference between the actual flow rate and the design flow rate, average flow rate, or theoretical flow rate. It is an important indicator for evaluating the uniformity of fluid distribution.

[0077] This second relationship can be obtained through extensive simulation experiments. For example, after constructing a first equivalent structural model of the distribution area structure based on the second design parameters, and then applying the assumed second design parameters to this first equivalent structural model, the operation of the distribution area structure can be simulated based on the first equivalent structural model to obtain the simulated flow deviation and flow resistance loss. After performing multiple simulations, based on the assumed second design parameters and the simulated flow deviation and flow resistance loss, the relationship between the second design parameters and the flow deviation, as well as the relationship between the second design parameters and the flow resistance loss, can be obtained.

[0078] The preset flow deviation and the preset second flow resistance loss can both be set according to actual needs, and this embodiment does not impose any limitations. Optionally, the preset flow deviation is 10%, and the preset second flow resistance loss is 10 kPa.

[0079] If, in a certain simulation, the simulated flow deviation is less than the preset flow deviation and the simulated flow resistance loss is less than the second flow resistance loss, then the assumed second design parameter used in that simulation shall be taken as the target second design parameter.

[0080] Step 203: For the reaction zone structure in the flow channel and flow field structure of the flow battery, determine the target third design parameters of the reaction zone based on the third design parameters of the reaction zone structure, the third relationship between the minimum concentration deviation and concentration polarization of the conductor in the reaction zone structure, the preset concentration deviation and the preset concentration polarization.

[0081] The third design parameter includes at least one of the following in the reaction zone structure: flow channel shape, number of flow channels, flow channel width, flow channel length, length of equalization buffer port, width of equalization buffer port, length of distribution flow channel inlet, or width of compensation flow channel inlet.

[0082] The locations of the equalization buffer port, the distribution channel inlet, and the compensation channel inlet can be found in the structural diagram of the reaction zone shown in Figure 4. In Figure 4, W represents the width of the channel in the reaction zone, L1 represents the length of the interdigitated ends in the reaction zone structure, L2 represents the length of the equalization buffer port, L3 represents the length of the distribution channel inlet, and L4 represents the width of the compensation channel inlet. In one embodiment, W = 0.5 mm to 4 mm, L1 = 3 W to 20 W, L2 = 0.5 L1 to 0.9 L1, L3 = 0.8 W to 2 W, and L4 = 0.1 L3 to 0.5 L3.

[0083] As shown in Figure 4, the flow battery channel structure also includes a reaction zone electrode plate, a reaction zone end, a reaction zone inlet, and an inner edge of the distribution channel.

[0084] This third relationship can be obtained through extensive simulation experiments. For example, after constructing a second equivalent structural model of the reaction zone based on the third design parameters, and then applying the assumed third design parameters to this second equivalent structural model, the operation of the reaction zone structure can be simulated based on the second equivalent structural model to obtain the simulated concentration deviation and concentration polarization. After performing multiple simulations, based on the assumed third design parameters and the simulated concentration deviation and concentration polarization, the relationship between the third design parameters and the concentration deviation, as well as the relationship between the third design parameters and the concentration polarization, can be obtained.

[0085] The preset concentration deviation and the preset concentration polarization can be set according to actual needs, and are not limited in this embodiment. Optionally, the preset concentration deviation is 5%, and the preset concentration polarization is 0.05V.

[0086] If, in a certain simulation, the simulated concentration deviation is less than the preset concentration deviation and the simulated concentration polarization is less than the preset concentration polarization, then the assumed third design parameter used in that simulation shall be taken as the target third design parameter.

[0087] Finally, the flow channel structure of the flow battery was determined based on the first design parameters of the mainstream region structure, the second design parameters of the distribution region structure, and the third design parameters of the reaction region structure.

[0088] The analysis method for the flow channel and flow field structure of the flow battery provided in this embodiment combines design parameters with design requirements, enabling the flow channel structure of the flow battery to accurately meet design needs and objectives. Design requirements include preset bypass losses, preset first flow resistance losses, preset second flow resistance losses, preset flow rate deviations, preset concentration deviations, and preset concentration polarization. Designing the flow channel structure of the flow battery using the method provided in this embodiment can improve the uniformity of flow velocity in the flow region, solve the flow dead zone in the reaction zone, increase the concentration of reactants, and reduce concentration polarization. In addition, it can also improve the voltage efficiency and energy efficiency of the battery. In particular, the development trend of flow batteries is that with the rapid improvement of overall performance (electrolyte, electrode materials), high current density operation will become the mainstream trend, inevitably requiring refined optimization of design parameters to improve flow battery performance. Therefore, the method provided in this embodiment is applicable to the development trend of flow batteries and has high practicality.

[0089] In one exemplary embodiment, the first relationship includes the relationship between the first design parameter and the bypass current loss, and also includes the relationship between the first design parameter and the current resistance loss.

[0090] As shown in Figure 5, the analysis method for the flow channel and flow field structure of this flow battery also includes:

[0091] Step 501: Based on the first design parameter, establish the equivalent circuit model and the first flow resistance calculation model for each flow channel in the main flow area structure.

[0092] For each flow channel, a resistance model is established based on the conductor length, cross-sectional area, and resistivity. The established resistance model is R = ρ × L / S, where L represents the conductor (i.e., conductive liquid) length, S represents the conductor cross-sectional area, and ρ represents the resistivity. Based on the resistance model, channel length, channel width, and the number of stack layers in the flow battery, an equivalent circuit model is established. The relationship between bypass current and the number of stack layers is known. Based on this resistance model and the number of stack layers in the flow battery, the equivalent circuit model can be established in one-dimensional simulation software, and the relationship between channel length and channel width is incorporated into this equivalent circuit model.

[0093] For each flow channel, a first flow resistance calculation model is established based on the flow channel width, flow channel depth, flow channel length, resistivity of the conductor in the flow channel, average flow velocity of the conductor in the flow channel, and friction coefficient.

[0094] In the first flow resistance calculation model, the flow resistance loss can be expressed as: Where ΔP represents flow resistance loss, λ represents friction coefficient, h represents channel depth, d represents channel width, ρ represents resistivity of conductor in channel, and V represents average flow velocity of conductor.

[0095] Step 502: For each flow channel, apply the assumed first design parameter to the equivalent circuit model and simulate the usage process of the main flow region structure to obtain the simulated bypass current loss; based on the assumed first design parameter and the simulated bypass current loss, obtain the relationship between the first design parameter and the bypass current loss.

[0096] The assumed first design parameter is applied to the equivalent circuit model, and the usage process of the main flow region structure is simulated using one-dimensional simulation software (such as AMEsim). The relationship between the first design parameter and the current efficiency is analyzed. Bypass current loss = 1 - current efficiency.

[0097] The relationship between the analyzed channel length (200 mm to 400 mm) and current efficiency is shown in Figure 6. The relationship between the analyzed channel width (8 mm to 20 mm) and current efficiency is shown in Figure 7. Thus, the relationship between the first design parameter and bypass current loss is obtained. In Figure 6, the horizontal axis represents the channel length, and the vertical axis represents the current efficiency. In Figure 7, the horizontal axis represents the channel width, and the vertical axis represents the current efficiency.

[0098] Step 503: For each flow channel, apply the assumed first design parameter to the first flow resistance calculation model and simulate the usage process of the main flow region structure to obtain the simulated flow resistance loss; based on the assumed first design parameter and the simulated flow resistance loss, obtain the relationship between the first design parameter and the flow resistance loss.

[0099] The assumed first design parameter is applied to the first flow resistance calculation model. One-dimensional simulation software (such as AMEsim) is used to simulate the usage process of the main flow region structure, and the relationship between the first design parameter and flow resistance loss is analyzed. The flow resistance loss of the main flow region structure on either the inlet or outlet side must be less than 5 kPa.

[0100] The relationship between the analyzed channel length (200 mm to 400 mm) and flow resistance loss is shown in Figure 8. The relationship between the analyzed channel width (8 mm to 20 mm) and flow resistance loss is shown in Figure 9.

[0101] In this embodiment, one-dimensional simulation software can be used to establish an equivalent circuit model and a first current resistance calculation model for each flow channel in the main flow region structure. After simulating the usage process of the main flow region structure based on the assumed first design parameters to obtain the simulated bypass current loss, the relationship between the first design parameters and the bypass current loss can be obtained. Similarly, after simulating the usage process of the main flow region structure based on the assumed first design parameters to obtain the simulated current resistance loss, the relationship between the first design parameters and the current resistance loss can be obtained. Simulating the usage process of the main flow region structure using simulation software allows for precise achievement of design requirements and goals by changing the first design parameters, enabling the flow battery to adapt to different scenarios.

[0102] In one exemplary embodiment, the second relationship includes the relationship between the second design parameter and the flow deviation, and the relationship between the second design parameter and the flow resistance loss.

[0103] As shown in Figure 10, the analysis method for the flow channel and flow field structure of this flow battery also includes:

[0104] Step 1001: Based on the second design parameters, establish a first equivalent structural model of the distribution area structure, and based on the second design parameters, establish a second flow resistance calculation model for each flow channel in the distribution area structure.

[0105] To ensure uniform flow rate in each channel, the distribution area needs to be optimized when designing an interleaved flow channel structure.

[0106] For the distribution zone structure, the channel length L, channel width d, spacing W between adjacent channels, and number of channels N have a significant impact on the uniformity of flow distribution. Different first equivalent structural models are established based on different L, d, W, and N models, and CFD (Computational Fluid Dynamics) simulation software is used to simulate and analyze these first equivalent structural models, calculating different flow rates under the rated operating flow rate.

[0107] Step 1002: Apply multiple different second design parameters to the first equivalent structural model and simulate the use of the distribution area structure to obtain multiple simulated flow deviations for the conductors in the distribution area structure; determine the relationship between the second design parameters and the flow deviations based on the multiple different second design parameters and the multiple simulated flow deviations.

[0108] Based on design requirements (e.g., flow deviation must be less than 10%), calculate the simulated flow deviation η = 2 × (Vmax - Vmin) / (Vmax + Vmin) × 100%. Vmax represents the maximum flow rate, and Vmin represents the minimum flow rate. Simulate the usage process of the distribution area structure to obtain the simulated maximum and minimum flow rates of the conductors within the distribution area structure. Based on the simulated maximum and minimum flow rates, obtain the simulated flow deviation.

[0109] In one example, please refer to the experimental data shown in Table 1, where multiple assumed second design parameters correspond to different simulated flow deviations. In the table, the units for length L1 and spacing D2 are millimeters (mm). N represents the number of channels in the distribution zone structure, length L1 represents the channel length of the distribution zone structure, and spacing D2 represents the spacing between adjacent channels in the distribution zone structure.

[0110] Table 1

[0111] Step 1003: For each flow channel, apply the assumed second design parameter to the second flow resistance calculation model and simulate the usage process of the distribution area structure to obtain the simulated flow resistance loss; determine the relationship between the assumed second design parameter and the simulated flow resistance loss based on the assumed second design parameter and the simulated flow resistance loss.

[0112] In this second flow resistance calculation model, the flow resistance loss can be expressed as: Where ΔP represents flow resistance loss, λ represents friction coefficient, h represents channel depth, d represents channel width, ρ represents resistivity of conductor in channel, and V represents average flow velocity of conductor.

[0113] By applying the assumed second design parameters to the second flow resistance calculation model, CFD simulation software can be used for parametric simulation analysis to obtain the simulated flow resistance loss. The flow resistance loss of the mainstream structure on either the inlet or outlet side must be less than 5 kPa.

[0114] In this embodiment, CFD simulation software can be used to establish a first equivalent structural model and a second flow resistance calculation model for the distribution zone structure. After simulating the usage process of the distribution zone structure based on the assumed second design parameters and obtaining the simulated flow deviation, the relationship between the second design parameters and the flow deviation can be obtained. Similarly, after simulating the usage process of the distribution zone structure based on the assumed second design parameters and obtaining the simulated flow resistance loss, the relationship between the second design parameters and the flow resistance loss can be obtained. Simulating the usage process of the distribution zone structure using simulation software allows for precise achievement of design requirements and objectives by changing the second design parameters, enabling the flow battery to adapt to different scenarios.

[0115] In an exemplary embodiment, as shown in FIG11, the analysis method for the flow channel and flow field structure of the flow battery further includes:

[0116] Step 1101: Establish a second equivalent structural model of the reaction zone structure based on the third design parameters, and apply the assumed third design parameters to the second equivalent structural model.

[0117] The design of the reaction zone directly affects local concentration polarization. Different flow models have different local concentration characteristics, requiring the design of different local feature structures to eliminate local high-concentration polarization. Regarding how staggered flow channels can improve local concentration, a staggered flow channel model, i.e., the second equivalent structure model, is first established. Then, Comsol simulation analysis software is used to model and perform model simulation analysis, generating the initial concentration analysis and producing a concentration field.

[0118] Step 1102: For each of the assumed third design parameters, simulate the concentration distribution data of the conductor in the reaction zone structure.

[0119] The concentration field generated can be used to display the concentration distribution data of the conductor. The concentration distribution data shows the local concentration. In one example, there are low concentration points in the region where the reaction zone structure is in contact with the distribution zone structure.

[0120] Step 1103: For each concentration distribution data, determine the simulated minimum concentration of the conductor in the reaction zone structure and the simulated concentration of the conductor at the outlet based on the concentration distribution data; determine the simulated minimum concentration deviation of the conductor in the reaction zone structure based on the simulated minimum concentration deviation; determine the simulated concentration polarization based on the simulated minimum concentration deviation.

[0121] Different structures are designed for regions with low concentrations, and these structures are customized with specific parameters. Based on the characteristics of these low concentration areas, different optimized structural schemes can be developed, with each optimized scheme corresponding to a specific third design parameter.

[0122] For example, in Method 1, the electrode structure is improved to optimize the local design, adding a reserved rectangular (or trapezoidal) flow channel area in the middle (see Figure 12). Simultaneously, a second equivalent structural model is established when L2 and L4 are not the same, forming parameter optimization points with L2 and L4 as variables. In Figure 12, W represents the width of the flow channel in the reaction zone, L1 represents the length of the interdigitated ends in the reaction zone structure, L2 represents the length of the liquid equalization buffer port, H represents the width of the liquid equalization buffer port, L3 represents the length of the liquid inlet of the distribution channel, and L4 represents the width of the compensation channel port. In one embodiment, W = 0.5mm~4mm, L1 = 3W~20W, L2 = 0.5L1~0.9L1, L3 = 0.8W~2W, L4 = 0.1L3~0.5L3, and H = 0.5mm~4mm.

[0123] For example, in Method 2, the electrode plate frame structure is improved to optimize the local concentration design, and multiple openings are added to form a multi-channel region (see Figure 13) to solve the problem of low local concentration. A second equivalent structural model is established with different numbers N (3 arrows point to 3 openings) and opening diameters d, forming parameter optimization points with N and d as variables.

[0124] Electrochemical simulation software was used to analyze the second equivalent structure models established in different ways.

[0125] Based on the design system application, a judgment formula is formulated for the simulated concentration, namely, η is defined as follows: when the local minimum concentration is not lower than 10%. Cr =(Cr (出 口) -Cr (min) ) / Cr (出口) This formula is used to represent the ratio of the difference between the outlet concentration and the minimum concentration, η. Cr The lower the Cr content, the better the performance of the flow battery. In the formula... (出口) Indicates the outlet concentration, Cr (min) Indicates the minimum concentration, η Cr This represents the ratio of the difference between the export concentration and the lowest concentration.

[0126] For the assumed third design parameters, those that do not meet the requirement (local minimum concentration not less than 10%) are screened, and considering processability and material properties, η is selected. Cr The optimal structural scheme at the lowest point (corresponding to one of the third design parameters).

[0127] Then use the concentration polarization formula Calculate the concentration polarization corresponding to the optimized structural scheme. In the formula, R represents the gas constant, T represents the temperature, n represents the number of electrons, F represents the Faraday constant, I represents the local current density, and k m c represents the mass transfer coefficient. r This indicates the local concentration of vanadium ions.

[0128] Step 1104: Determine the third relationship based on the assumed third design parameters, the simulated minimum concentration deviation corresponding to each of the assumed third design parameters, and the simulated concentration polarization corresponding to each of the assumed third design parameters.

[0129] Using Comsol software for analysis and calculation, the simulated minimum concentration deviation and simulated concentration polarization can be obtained. Based on the assumed third design parameters, the simulated minimum concentration deviation, and the simulated concentration polarization, the third relationship can be determined.

[0130] In this embodiment, by establishing a second equivalent structural model of the reaction zone structure, and simulating the usage process of the reaction zone structure according to the assumed third design parameters to obtain the simulated minimum concentration deviation, the relationship between the third design parameters and the minimum concentration deviation can be obtained. Similarly, by simulating the usage process of the reaction zone structure according to the assumed third design parameters to obtain the simulated concentration polarization, the relationship between the third design parameters and the simulated concentration polarization can be obtained. Using simulation to model the usage process of the reaction zone structure allows for precise achievement of design requirements and objectives by changing the third design parameters, enabling the flow battery to adapt to different scenarios.

[0131] For ease of understanding, the following detailed explanation of the analysis method for the flow channel and flow field structure of this flow battery is provided using a more specific embodiment. This analysis method for the flow channel and flow field structure of a flow battery is used for flow channel structure design. For the main channel structure, the first design parameters are determined, including the channel length and width of the main channel. Simulation optimization is performed using AMEsim one-dimensional software, with the bypass current loss set to be less than 5% (the preset bypass current loss is 5%), and the flow resistance loss of the main channel structure on the inlet or outlet side set to be less than 5 kPa (the preset first flow resistance loss is 5 kPa). Finally, the first design parameters of the main channel structure are determined based on the simulation optimization results. For the distribution zone structure, the second design parameters are determined, including the channel length of the distribution zone structure, the spacing between adjacent channels in the distribution zone structure, and the number of channels in the distribution zone structure. Parameter simulation analysis is performed using CFD simulation software, with the flow deviation set to be less than 10% (i.e., the preset flow deviation is 10%), and the flow resistance loss of the main channel structure on the inlet or outlet side set to be less than 5 kPa (the preset second flow resistance loss is 5 kPa). Finally, the second design parameters of the distribution zone structure were determined based on the simulation optimization results. For the reaction zone structure, the third design parameters were determined, including the flow channel shape, number of flow channels, flow channel width, flow channel length, length of the equalization buffer port, width of the equalization buffer port, and length of the distribution channel inlet or width of the compensation channel inlet. Parameter simulation analysis was performed using electrochemical simulation software, with a minimum concentration deviation set to less than 5% (the preset concentration deviation is 5%) and a concentration polarization set to less than 0.05V (the preset concentration polarization is 0.05V). Finally, the third design parameters of the reaction zone structure were determined based on the simulation optimization results.

[0132] Finally, based on the first design parameters of the mainstream region structure, the second design parameters of the distribution region structure, and the third design parameters of the reaction region structure, the flow channel and flow field structure of the flow battery were determined.

[0133] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0134] Based on the same inventive concept, this application also provides an analysis device for the flow channel and flow field structure of a flow battery, used to implement the analysis method for the flow channel and flow field structure of the flow battery described above. The solution provided by this device is similar to the solution described in the above method. Therefore, the specific limitations in one or more embodiments of the analysis device for the flow channel and flow field structure of a flow battery provided below can be found in the limitations of the analysis method for the flow channel and flow field structure of a flow battery described above, and will not be repeated here.

[0135] In an exemplary embodiment, as shown in FIG14, an analysis device 140 for the flow channel and flow field structure of a flow battery is provided, including: a first processing module 1401, a second processing module 1402, and a third processing module 1403, wherein:

[0136] The first processing module 1401 is used to determine the target first design parameters of each flow channel in the mainstream region structure for the flow channel and flow field structure of the flow battery, based on the first design parameters of each flow channel in the mainstream region structure, the first relationship between bypass current loss and flow resistance loss, the preset bypass current loss and the preset first flow resistance loss; wherein, the first design parameters include at least one of the flow channel length, flow channel width or flow channel depth of the mainstream region structure.

[0137] The second processing module 1402, for the distribution zone structure in the flow channel and flow field structure of the flow battery, determines the target second design parameters of each flow channel in the distribution zone structure based on the second design parameters of each flow channel in the distribution zone structure, the second relationship between the flow deviation and flow resistance loss of the flow channel, the preset flow deviation and the preset second flow resistance loss; wherein, the second design parameters include at least one of the flow channel length of the distribution zone structure, the flow channel width of the distribution zone structure, the spacing between adjacent flow channels of the distribution zone structure or the number of flow channels of the distribution zone structure.

[0138] The third processing module 1403 is used to determine the target third design parameters of the reaction zone structure in the flow channel and flow field structure of the flow battery, based on the third design parameters of the reaction zone structure, the third relationship between the minimum concentration deviation and concentration polarization of the conductor in the reaction zone structure, the preset concentration deviation and the preset concentration polarization; wherein, the third design parameters include at least one of the following in the reaction zone structure: flow channel shape, number of flow channels, flow channel width, flow channel length, length of liquid equalization buffer port, width of liquid equalization buffer port, length of liquid distribution channel inlet or width of compensation channel inlet.

[0139] In some embodiments, the first relationship includes the relationship between the first design parameter and the bypass current loss, and also includes the relationship between the first design parameter and the flow resistance loss; the first processing module 1401 is further configured to establish an equivalent circuit model and a first flow resistance calculation model for each flow channel in the main flow region structure based on the first design parameter; for each flow channel, apply the assumed first design parameter to the equivalent circuit model and simulate the usage process of the main flow region structure to obtain the simulated bypass current loss; obtain the relationship between the first design parameter and the bypass current loss based on the assumed first design parameter and the simulated bypass current loss; for each flow channel, apply the assumed first design parameter to the first flow resistance calculation model and simulate the usage process of the main flow region structure to obtain the simulated flow resistance loss; obtain the relationship between the first design parameter and the flow resistance loss based on the assumed first design parameter and the simulated flow resistance loss.

[0140] In some embodiments, the first design parameter includes the flow channel length and the flow channel width of the mainstream region structure. The first processing module 1401 is used to establish a resistance model of the flow channel for each flow channel based on the conductor length, conductor cross-sectional area and conductor resistivity in the flow channel; and to establish an equivalent circuit model of the flow channel based on the resistance model of the flow channel, the flow channel length, the flow channel width and the number of stack layers in the flow battery.

[0141] In some embodiments, the first design parameters include the flow channel length, flow channel width, and flow channel depth of the mainstream region structure. The first processing module 1401 is used to establish a first flow resistance calculation model for each flow channel based on the flow channel width, flow channel depth, flow channel length, conductor resistivity in the flow channel, average flow velocity of the conductor in the flow channel, and friction coefficient.

[0142] In some embodiments, the second relationship includes the relationship between the second design parameter and the flow deviation, and the relationship between the second design parameter and the flow resistance loss. The second processing module 1402 is further configured to: establish a first equivalent structural model of the distribution area structure based on the second design parameter; establish a second flow resistance calculation model for each flow channel in the distribution area structure based on the second design parameter; apply multiple assumed different second design parameters to the first equivalent structural model and simulate the usage process of the distribution area structure to obtain multiple simulated flow deviations for the conductors in the distribution area structure; determine the relationship between the second design parameter and the flow deviation based on the multiple different second design parameters and the multiple simulated flow deviations; for each flow channel, apply the assumed second design parameter to the second flow resistance calculation model and simulate the usage process of the distribution area structure to obtain simulated flow resistance loss; and determine the relationship between the second design parameter and the flow resistance loss based on the assumed second design parameter and the simulated flow resistance loss.

[0143] In some embodiments, the second processing module 1402 is used to simulate the use of the distribution area structure to obtain the simulated maximum flow rate and simulated minimum flow rate of the conductor in the distribution area structure; and to obtain the simulated flow rate deviation based on the simulated maximum flow rate and simulated minimum flow rate.

[0144] In some embodiments, the third processing module 1403 is used to establish a second equivalent structural model of the reaction zone structure based on the third design parameters, and apply the assumed plurality of third design parameters to the second equivalent structural model; for each assumed third design parameter, simulate the concentration distribution data of the conductor in the reaction zone structure; for each concentration distribution data, determine the simulated minimum concentration of the conductor in the reaction zone structure and the simulated concentration of the conductor at the outlet based on the concentration distribution data; determine the simulated minimum concentration deviation of the conductor in the reaction zone structure based on the simulated minimum concentration deviation; determine the simulated concentration polarization based on the simulated minimum concentration deviation; and determine the third relationship based on the assumed plurality of third design parameters, the simulated minimum concentration deviation corresponding to each assumed third design parameter, and the simulated concentration polarization corresponding to each assumed third design parameter.

[0145] Each module in the aforementioned analysis device 140 for the flow battery channel and flow field structure can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device, or stored in the memory of a computer device as software, so that the processor can call and execute the operations corresponding to each module.

[0146] In an exemplary embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram is shown in Figure 15. The computer device includes a processor, memory, input / output interface, communication interface, display unit, and input device. The processor, memory, and input / output interface are connected via a system bus, and the communication interface, display unit, and input device are also connected to the system bus via the input / output interface. The processor of the computer device provides computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The input / output interface of the computer device is used for exchanging information between the processor and external devices. The communication interface of the computer device is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, mobile cellular networks, Near Field Communication (NFC), or other technologies. When the computer program is executed by the processor, it implements a method for analyzing the flow channel and flow field structure of a flow battery. The display unit of the computer device is used to form a visually visible image and may be a display screen, a projection device, or a virtual reality imaging device.

[0147] Those skilled in the art will understand that the structure shown in Figure 15 is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or may combine certain components, or may have different component arrangements.

[0148] In one exemplary embodiment, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the analysis method for the flow channel and flow field structure of the flow battery as provided in any of the preceding embodiments.

[0149] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the analysis method for the flow channel and flow field structure of a flow battery as provided in any of the preceding embodiments.

[0150] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the analysis method for the flow channel and flow field structure of a flow battery as provided in any of the preceding embodiments.

[0151] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. This computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, artificial intelligence (AI) processors, etc., and are not limited to these.

[0152] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0153] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

An analysis method of a flow channel and a flow field structure of a flow battery, characterized in that, The method includes: For the mainstream region structure in the flow channel and flow field structure of a flow battery, a target first design parameter is determined for each flow channel in the mainstream region structure based on a first relationship, a preset bypass current loss, and a preset first flow resistance loss. The first relationship includes the relationship between the first design parameter and the bypass current loss, and also includes the relationship between the first design parameter and the flow resistance loss. The first design parameter includes at least one of the flow channel length, flow channel width, or flow channel depth of the mainstream region structure. For the distribution zone structure in the flow channel and flow field structure of the flow battery, the target second design parameters of each flow channel in the distribution zone structure are determined according to the second design parameters of each flow channel in the distribution zone structure, the second relationship between the flow deviation and flow resistance loss of the flow channel, the preset flow deviation and the preset second flow resistance loss; wherein, the second design parameters include at least one of the following: the flow channel length of the distribution zone structure, the flow channel width of the distribution zone structure, the spacing between adjacent flow channels of the distribution zone structure, or the number of flow channels of the distribution zone structure; For the reaction zone structure in the flow channel and flow field structure of a flow battery, the target third design parameters of the reaction zone are determined based on the third design parameters of the reaction zone structure, the third relationship between the minimum concentration deviation and concentration polarization of the conductor in the reaction zone structure, the preset concentration deviation, and the preset concentration polarization. The third design parameters include at least one of the following: flow channel shape, number of flow channels, flow channel width, flow channel length, length of the liquid equalization buffer port, width of the liquid equalization buffer port, length of the liquid distribution channel inlet, or width of the compensation channel inlet. The conductor is a conductive liquid. The method of claim 1, wherein The method further includes: Based on the first design parameters, an equivalent circuit model and a first flow resistance calculation model are established for each flow channel in the mainstream region structure. For each flow channel in the mainstream region structure, the assumed first design parameters are applied to the equivalent circuit model, and the usage process of the mainstream region structure is simulated to obtain the simulated bypass current loss; based on the assumed first design parameters and the simulated bypass current loss, the relationship between the first design parameters and the bypass current loss is obtained. For each flow channel in the mainstream region structure, the assumed first design parameters are applied to the first flow resistance calculation model, and the usage process of the mainstream region structure is simulated to obtain the simulated flow resistance loss; based on the assumed first design parameters and the simulated flow resistance loss, the relationship between the first design parameters and the flow resistance loss is obtained. The method according to claim 2, characterized in that The first design parameters include the channel length and channel width of the mainstream region structure. The step of establishing an equivalent circuit model for each channel in the mainstream region structure based on the first design parameters includes: For each flow channel in the mainstream region structure, a resistance model of the flow channel is established based on the conductor length, conductor cross-sectional area, and conductor resistivity in the flow channel; Based on the resistance model of the flow channel, the flow channel length of the mainstream region structure, the flow channel width of the mainstream region structure, and the number of stack layers in the flow battery, an equivalent circuit model of the flow channel is established. The method according to claim 2, characterized in that The first design parameters include the flow channel length, flow channel width, and flow channel depth of the mainstream region structure. Based on the first design parameters, a first flow resistance calculation model is established for each flow channel in the mainstream region structure, including: For each channel in the mainstream structure, a first flow resistance calculation model for the mainstream structure is established based on the channel width, channel depth, channel length, conductor resistivity in the mainstream structure, average flow velocity of the conductor in the mainstream structure, and friction coefficient. The method of claim 1, wherein The second relationship includes the relationship between the second design parameter and the flow deviation, and the relationship between the second design parameter and the flow resistance loss; The method further includes: A first equivalent structural model of the distribution area structure is established based on the second design parameters, and a second flow resistance calculation model of each flow channel in the distribution area structure is established based on the second design parameters. Multiple hypothetical second design parameters are applied to the first equivalent structural model, and the usage process of the distribution area structure is simulated to obtain multiple simulated flow deviations for the conductors in the distribution area structure; based on the multiple different second design parameters and the multiple simulated flow deviations, the relationship between the second design parameters and the flow deviations is determined. For each flow channel in the distribution area structure, the assumed second design parameters are applied to the second flow resistance calculation model, and the usage process of the distribution area structure is simulated to obtain the simulated flow resistance loss; based on the assumed second design parameters and the simulated flow resistance loss, the relationship between the second design parameters and the flow resistance loss is determined. The method according to claim 5, characterized in that The process of using the simulated distribution zone structure yields multiple simulated flow deviations for the conductors within the distribution zone structure, including: The usage process of the distribution zone structure is simulated to obtain the simulated maximum and minimum flow rates of the conductors in the distribution zone structure; The simulated flow deviation is obtained based on the simulated maximum flow and simulated minimum flow. The method of claim 1, wherein The method further includes: A second equivalent structural model of the reaction zone structure is established based on the third design parameters, and the assumed third design parameters are applied to the second equivalent structural model. For each of the assumed third design parameters, the concentration distribution data of the conductors in the reaction zone structure are simulated and obtained. For each concentration distribution data point, the simulated minimum concentration of the conductor in the reaction zone structure and the simulated concentration of the conductor at the outlet are determined based on the concentration distribution data; the simulated minimum concentration deviation of the conductor in the reaction zone structure is determined based on the simulated minimum concentration deviation; and the simulated concentration polarization is determined based on the simulated minimum concentration deviation. The third relationship is determined based on the assumed third design parameters, the simulated minimum concentration deviation corresponding to each of the assumed third design parameters, and the simulated concentration polarization corresponding to each of the assumed third design parameters. An analysis device of a flow channel and a flow field structure of a flow battery, characterized in that, The device includes: The first processing module is used to determine the target first design parameters for each flow channel in the mainstream region structure of the flow battery, based on the first relationship of each flow channel in the mainstream region structure, the preset bypass current loss, and the preset first flow resistance loss. The first relationship includes the relationship between the first design parameters and the bypass current loss, and also includes the relationship between the first design parameters and the flow resistance loss. The first design parameters include at least one of the flow channel length, flow channel width, or flow channel depth of the mainstream region structure. The second processing module is used to determine the target second design parameters of each flow channel in the distribution area structure of the flow battery flow channel and flow field structure, based on the second design parameters of each flow channel in the distribution area structure, the second relationship between the flow deviation and flow resistance loss of the flow channel, and the preset flow deviation and preset second flow resistance loss; wherein, the second design parameters include at least one of the following: flow channel length of the distribution area structure, flow channel width of the distribution area structure, spacing between adjacent flow channels of the distribution area structure, or number of flow channels of the distribution area structure; The third processing module is used to determine the target third design parameters of the reaction zone structure in the flow channel and flow field structure of the flow battery, based on the third design parameters of the reaction zone structure, the third relationship between the minimum concentration deviation and concentration polarization of the conductor in the reaction zone structure, and the preset concentration deviation and preset concentration polarization. The third design parameters include at least one of the following in the reaction zone structure: flow channel shape, number of flow channels, flow channel width, flow channel length, length of the liquid equalization buffer port, width of the liquid equalization buffer port, length of the liquid distribution channel inlet, or width of the compensation channel inlet. The conductor is a conductive liquid. The apparatus of claim 8, wherein The first processing module is further configured to: establish an equivalent circuit model and a first current resistance calculation model for each flow channel in the mainstream region structure based on the first design parameters; apply the assumed first design parameters to the equivalent circuit model for each flow channel in the mainstream region structure, and simulate the usage process of the mainstream region structure to obtain the simulated bypass current loss. Based on the assumed first design parameters and the simulated bypass current loss, the relationship between the first design parameters and the bypass current loss is obtained. For each flow channel in the mainstream region structure, the assumed first design parameters are applied to the first flow resistance calculation model, and the usage process of the mainstream region structure is simulated to obtain the simulated flow resistance loss; based on the assumed first design parameters and the simulated flow resistance loss, the relationship between the first design parameters and the flow resistance loss is obtained. The apparatus of claim 9, wherein The first design parameters include the flow channel length and the flow channel width of the mainstream region structure. Based on the first design parameters, an equivalent circuit model of each flow channel in the mainstream region structure is established. The first processing module is further configured to: for each flow channel in the mainstream region structure, establish a resistance model of the flow channel based on the conductor length, conductor cross-sectional area, and conductor resistivity; and establish an equivalent circuit model of the flow channel based on the resistance model of the flow channel, the flow channel length of the mainstream region structure, the flow channel width of the mainstream region structure, and the number of stack layers in the flow battery. The apparatus of claim 9, wherein The first design parameters include the flow channel length, flow channel width, and flow channel depth of the mainstream region structure. Based on the first design parameters, a first flow resistance calculation model is established for each flow channel in the mainstream region structure. The first processing module is further configured to: for each flow channel in the mainstream region structure, establish a first flow resistance calculation model for the flow channel of the mainstream region structure based on the flow channel width, flow channel depth, flow channel length, conductor resistivity in the flow channel of the mainstream region structure, average flow velocity of the conductor in the flow channel of the mainstream region structure, and friction coefficient. The apparatus of claim 8, wherein The second relationship includes the relationship between the second design parameters and the flow deviation, and the relationship between the second design parameters and the flow resistance loss; the second processing module is further configured to: establish a first equivalent structural model of the distribution area structure based on the second design parameters, establish a second flow resistance calculation model for each flow channel in the distribution area structure based on the second design parameters; apply multiple assumed different second design parameters to the first equivalent structural model, and simulate the usage process of the distribution area structure to obtain multiple simulated flow deviations for the conductors in the distribution area structure; determine the relationship between the second design parameters and the flow deviation based on multiple different second design parameters and multiple simulated flow deviations; For each flow channel in the distribution area structure, the assumed second design parameters are applied to the second flow resistance calculation model, and the usage process of the distribution area structure is simulated to obtain the simulated flow resistance loss; based on the assumed second design parameters and the simulated flow resistance loss, the relationship between the second design parameters and the flow resistance loss is determined. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 7. A computer-readable storage medium having stored thereon a computer program, characterized in that When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 7. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 7.

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