Charging and discharging communication management method for container battery system

Abstract

The application discloses a charging and discharging communication management method of a container type battery system and relates to the field of communication management.The method constructs a three-stage communication strategy control mechanism on the basis of communication environment level division: the communication rhythm and parameters are kept normal operation when the communication is stable at level L1;redundant channels are monitored and non-key data is compressed when the communication fluctuates at level L2;the redundant communication mechanism is triggered when the communication is at risk at level L3;and the hierarchical linkage control strategy switching can be realized according to the external environment interference and internal link feedback results.Especially under unstable communication conditions, the real-time comparison of the communication stability evaluation index Tqs and the stability threshold T1 triggers the "redundant link reconstruction mechanism", the "compression upload mechanism" and the "instruction degradation execution mechanism", which not only improves the communication success rate of key instructions and core state data, but also ensures that the system can quickly enter the fault-tolerant mode under abnormal conditions, greatly enhancing the anti-interference ability of the system.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication management, in particular to a charging and discharging communication management method of a container battery system. BACKGROUND

[0002] As a new type of ship auxiliary power source or main energy source core component, the charging and discharging behavior of the container battery system needs to maintain efficient and stable long-distance communication connection in complex sea environment. Especially under the deployment architecture of multiple modules and multiple nodes of the container battery, the charging instruction issuing, discharge scheduling feedback, and state quantity uploading of each battery module all rely on real-time and reliable communication mechanism to ensure the safe operation and remote monitoring of the ship power system. With the increasing trend of ship electrification, how to ensure the communication stability between the battery system and the shore-based control center or the ship bridge command layer under the background of the dramatic changes of sea communication conditions has become a key problem that needs to be solved.

[0003] At present, the communication mechanism of the ship container battery system mainly uses fixed communication links for state information transmission and remote control instruction issuing, and the channel selection mechanism is often based on a single indicator such as signal strength or link quality as the basis for communication switching or channel maintenance. However, this communication strategy that relies on physical signal strength ignores the systematic influence of external electromagnetic interference environment and ship dynamic characteristics on communication link reliability. Especially in the sea areas such as ports and high radar wave coverage areas, the sea electromagnetic field strength presents a high fluctuation and high intensity interference situation. The channel switching strategy based on signal strength alone cannot accurately reflect the real interference load of the link, resulting in frequent problems such as communication delay, data packet loss, and link interruption, which seriously affects the timeliness and safety control ability of charging and discharging instructions;

[0004] In complex sea areas or severe weather conditions, the ship is affected by shore-based radio equipment, adjacent ship radar systems, satellite communication reflection, thunderstorm weather, and other factors during operation, forming a high-density electromagnetic interference zone, which causes the communication module of the container battery system to frequently appear link instability. Typical performance includes: charging completion signal upload failure causes redundant battery packs to be in a high-voltage high-temperature state for a long time; discharge command reception delay causes load switching failure, triggering emergency shutdown; remote health status monitoring is lost and cannot report fault information in real time, increasing the safety hidden danger of the whole ship energy system. These problems often occur suddenly without warning mechanism, causing uncontrollable risks to ship navigation safety and energy management system. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a charging and discharging communication management method of a container battery system, which solves the problems mentioned in the background art.

[0006] In order to achieve the above object, the application is implemented by the following technical solutions: a charging and discharging communication management method of a container battery system, comprising the following steps:

[0007] S1, a communication interference collection point is arranged in the ship container battery system, real-time communication interference data sets are collected, and the collected communication interference data sets are transmitted to a communication management processing module and preprocessed to obtain standardized data sets;

[0008] S2, based on the standardized data sets, an output communication environment adaptation index Li is calculated, the communication environment adaptation index Li is compared with a preset environment interference threshold, the communication environment level is divided, and a corresponding strategy is executed;

[0009] S3, when the communication environment level is L3, a redundant communication mechanism is triggered, the redundant communication mechanism calculates a communication stability evaluation index Tqs through the communication environment adaptation index Li, sets a stability threshold T1, and executes a feedback control mechanism.

[0010] Preferably, S1 comprises S11;

[0011] S11, the communication interference collection point comprises a first collection point C1, a second collection point C2 and a third collection point C3; and based on the communication interference collection point, communication interference data sets are collected;

[0012] The communication interference data sets comprise an electromagnetic field strength Eavg, a ship speed Vship and a packet loss rate Pdrop;

[0013] The first collection point C1 is arranged in a communication module in the ship container battery system, and collects the communication interference parameter electromagnetic field strength Eavg;

[0014] The second collection point C2 is arranged in a ship navigation system, and collects the ship speed Vship;

[0015] The third collection point C3 is arranged in the communication log of the communication module in the ship container battery system, and extracts the ratio of the number of failed data packet transmissions to the total number of transmissions in a past set time window to obtain the packet loss rate Pdrop.

[0016] Preferably, S1 further comprises S12;

[0017] S12, the communication interference collection point is connected to the communication management processing module of the ship container battery system through a wired data interface to establish a data link connection, and all collection points in the communication interference collection point are set with a collection strategy, and the collected communication interference data sets are transmitted to the communication management processing module;

[0018] The collection strategy comprises a collection period setting strategy and a collection frequency adjustment strategy;

[0019] The collection cycle setting strategy is set and updated through a cycle configuration table of the communication processing module, wherein the cycle configuration table is obtained by configuring a basic collection cycle for the communication interference collection point, and specifically, the basic collection cycle of the first collection point C1 is 1000 milliseconds, the basic collection cycle of the second collection point C2 is 2000 milliseconds, and the basic collection cycle of the third collection point C3 is 3000 milliseconds.

[0020] The collection frequency adjustment strategy is to reduce the basic collection cycle of the first collection point C1 and the third collection point C3 by 50% when the ship speed Vship is greater than 25 knots, and the second collection point C2 keeps the basic collection cycle of the ship navigation system unchanged.

[0021] Preferably, the S1 further comprises S13.

[0022] S13, real-time receiving a communication interference data set in the communication management processing module, and preprocessing the received communication interference data set to obtain a standardized data set;

[0023] The preprocessing includes data filtering, dimensionless normalization and standardized matrix construction.

[0024] The data filtering is to clean the random noise and invalid fluctuations in the communication interference data set by using a digital low-pass filtering algorithm and a sliding average algorithm, and output a stable communication interference data set.

[0025] The dimensionless normalization is to map the data of different physical unit dimensions to the interval [0, 1] by using the Min-Max normalization method, so as to eliminate the influence of unit dimension.

[0026] The standardized matrix construction constructs a standardized data set matrix by the dimensionless normalized communication interference data set, and the standardized data set matrix structure is multi-row and multi-column, each row corresponds to a sampling period record, and each column corresponds to a related parameter in the communication interference data set, wherein each column in the standardized data set matrix corresponds to the table conversion data of each row sampling period.

[0027] Preferably, the S2 comprises S21.

[0028] S21, based on the combination of the Euclidean distance formula and the exponential stability formula, a communication environment adaptability algorithm model is constructed, two parameters of the electromagnetic field strength Eavg and the ship speed Vship in the latest sampling period of the standardized data set are extracted and input into the communication environment adaptability algorithm model, and a communication environment adaptability index Li is output to quantitatively analyze the stable adaptability degree of the communication system in the current environment.

[0029] Preferably, the S2 further comprises S22;

[0030] S22, based on the communication environment adaptation index Li in the historical data, a preset environment interference threshold is performed, and the environment interference threshold comprises a stability threshold Lst and a fluctuation threshold Lfl;

[0031] The real-time acquired communication environment adaptation index Li is compared with the environment interference threshold, and based on the comparison result, the communication environment level is divided, and the specific comparison content is as follows:

[0032] When the communication environment adaptation index Li is greater than or equal to the stability threshold Lst, it is divided into L1 level;

[0033] When the fluctuation threshold Lfl is less than or equal to the communication environment adaptation index Li and less than the stability threshold Lst, it is divided into L2 level;

[0034] When the communication environment adaptation index Li is less than the fluctuation threshold Lfl, it is divided into L3 level.

[0035] Preferably, the S2 further comprises S23;

[0036] S23, the communication management processing module executes the following corresponding control strategy based on the communication environment level division result;

[0037] When it is divided into L1 level, the main communication link is used for sending instructions and uploading running data, the sampling period is kept at the basic value, and the container type battery system executes the conventional charging and discharging control strategy;

[0038] When it is divided into L2 level, the standby communication link is activated to listen, the communication module is adjusted to execute the collection frequency adjustment strategy, and the running data is compressed, and only four types of state parameters of voltage, current, SOC and temperature are reserved;

[0039] When it is divided into L3 level, the redundancy communication mechanism is triggered immediately.

[0040] Preferably, the S3 further comprises S31;

[0041] S31, after triggering the redundancy communication mechanism, the current communication environment adaptation index Li is combined with the packet loss rate Pdrop to calculate the output communication stability evaluation index Tqs, and the stability of the current communication link in a specific interference environment is analyzed.

[0042] Preferably, the S3 further comprises S32;

[0043] S32, the stability threshold T1 is compared with the communication stability evaluation index Tqs, and the feedback control mechanism is executed based on the comparison result; the specific comparison content is as follows:

[0044] When the communication stability evaluation index Tqs is greater than or equal to the stability threshold T1, the current main communication link and the control rhythm are maintained;

[0045] When the communication stability evaluation index Tqs is less than the stability threshold T1, the redundant communication link is started, and the redundant link reconstruction mechanism, the compressed upload mechanism and the instruction degradation execution mechanism are carried out to ensure fault tolerance.

[0046] Preferably, the S3 comprises S33.

[0047] The S33, the redundant link reconstruction mechanism, activates the standby subchannel communication link, the subchannel communication link comprises at least one of a LoRa communication module, a shore-based low-frequency communication module and a shipborne satellite communication module, and then calls a redundant communication strategy control unit to execute an erasure coding segmentation algorithm, divides the communication data stream into a plurality of data segments, adds a redundant check block to each data segment, and dynamically allocates the transmission priority and parallel sending path of the data segment according to the communication capability of the subchannel communication link.

[0048] The compressed upload mechanism starts the state data minimum subset transmission strategy, which only selects four types of core operating state quantities including battery voltage, battery current, battery monomer SOC and battery monomer temperature for uploading; at the same time, compression encoding is started, and run-length encoding RLE combined with differential encoding algorithm is used for high compression ratio encoding; the encoded communication data is packaged and preferentially delivered to the subchannel communication link.

[0049] The instruction degradation execution mechanism suspends the discharging task and automatically switches to the emergency mode running state, the emergency mode only retains the heartbeat signal communication link, the system abnormal alarm mechanism and the health state monitoring function, and packs and uploads the communication alarm identifier and the current communication environment L3 level to the ship bridge display interface.

[0050] The application provides a charging and discharging communication management method of a container type battery system, and has the following beneficial effects:

[0051] (1) The method sets up multiple communication interference collection points, collects and pre-processes multiple-source communication interference data including electromagnetic field strength Eavg, ship speed Vship and communication packet loss rate Pdrop in real time, and builds a standardized data set, realizing high-precision quantitative modeling of the communication environment interference of the ship; on this basis, the communication environment adaptability algorithm model based on the combination of Euclidean distance and exponential stability function outputs the communication environment adaptability index Li, which can effectively identify the link instability phenomenon caused by electromagnetic interference or ship disturbance. When the communication environment level reaches the risk level L3, the system immediately calculates the communication stability evaluation index Tqs based on the combination of the communication environment adaptability index Li and the packet loss rate Pdrop, and compares it with the stability threshold T1 to realize quantitative judgment and immediate feedback control of the link state, thereby significantly improving the stability, safety and reliability of the offshore battery communication link.

[0052] (2) The method builds a three-stage communication strategy control mechanism based on the division of the communication environment level: maintaining the normal operation of the communication rhythm and parameters at the communication stable level L1, enabling the listening redundant channel and compressing the non-critical data at the communication fluctuation level L2, and triggering the redundant communication mechanism at the communication risk level L3, which can realize hierarchical linkage control strategy switching according to external environmental interference and internal link feedback results. Especially under unstable communication conditions, the real-time comparison of the communication stability evaluation index Tqs and the stability threshold T1 triggers the "redundant link reconstruction mechanism", "compression upload mechanism" and "instruction degradation execution mechanism", which not only improves the communication success rate of critical instructions and core state data, but also ensures that the system can quickly enter the fault-tolerant mode under abnormal conditions, greatly enhancing the anti-interference ability, recovery ability and operation stability of the system.

[0053] (3) The method realizes adaptive sampling period control based on the ship speed Vship by introducing the communication interference perception mechanism and dynamic collection frequency strategy; at the same time, in the unstable link state, the state data minimum subset transmission strategy and differential compression encoding technology are adopted to greatly compress the communication data flow and significantly reduce the bandwidth load of the communication module in the high packet loss environment. Especially by calling the erasure code segmentation encoding algorithm, redundant check blocks are added to the communication data, and priority scheduling is performed according to the communication ability of different secondary channels, effectively avoiding the loss of critical data due to conflict or congestion. This mechanism can maximize the effective utilization of limited bandwidth resources, and can still guarantee the smooth completion of critical communication tasks in high-interference and high-packet-loss sea environments, improving the efficiency and resource scheduling flexibility of the overall communication link. BRIEF DESCRIPTION OF DRAWINGS

[0054] Figure 1 The figure is a charging and discharging communication management method steps schematic diagram of the container type battery system.

[0055] Figure 2 The figure is a whole structure block diagram of the charging and discharging communication management method of the container battery system. DETAILED DESCRIPTION

[0056] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0057] Embodiment 1, the present application provides a charging and discharging communication management method of a container battery system, please refer to Figure 1 and Figure 2 , comprising the following steps:

[0058] S1, a communication interference collection point is arranged in a ship container battery system, real-time communication interference data sets are collected, and the collected communication interference data sets are transmitted to a communication management processing module and preprocessed to obtain standardized data sets;

[0059] S2, based on the standardized data sets, an output communication environment adaptation index Li is calculated, the communication environment adaptation index Li is compared with a preset environment interference threshold value, the communication environment is classified, and a corresponding strategy is executed;

[0060] S3, when the communication environment level is L3, a redundant communication mechanism is triggered, the redundant communication mechanism calculates a communication stability evaluation index Tqs through the communication environment adaptation index Li, sets a stability threshold T1, and executes a feedback control mechanism.

[0061] In this embodiment, in actual deployment, the ship frequently sails in the open sea and high-interference sea area, and the communication is significantly affected by electromagnetic disturbance and dynamic motion. In step S1, multiple communication interference collection points are set to realize real-time sensing of the electromagnetic field strength Eavg, the ship speed Vship and the packet loss rate Pdrop, and a standardized dataset is constructed. The original and inconsistent dimension interference parameters are uniformly processed to ensure that the subsequent algorithm input has comparability and quantifiability. This preprocessing process avoids misjudgment caused by inconsistent units and improves the actual restoration ability of the model to the communication environment. In step S2, the communication environment adaptation index Li is constructed, and the stable threshold Lst and the fluctuation threshold Lfl are set to divide the levels. The purpose is to solve the problem of "unpredictable and unclassifiable" interference of the traditional communication system. The communication environment adaptation index Li is combined with the Euclidean distance model through the exponential function, so that the environment change curve is smoother and has a quantitative threshold. Once the communication environment level is identified as L3, that is, the communication risk area, the response mechanism can be triggered in the first time to avoid the risk of communication interruption caused by delayed triggering. In step S3, the communication stability evaluation index Tqs and the stability threshold T1 are introduced to compare the mechanism, which is to further refine the link health status under the L3 level. Instead of blindly triggering emergency measures, it is determined whether to degrade, compress or reconstruct according to the actual link state. For example, in the case of high interference but good link feedback, the system can avoid unnecessary communication switching and reduce resource waste. When Tqs is much lower than T1, it means that the communication has been difficult to maintain normal control, so the redundant link takeover is timely to ensure that the command is not delayed and the state data is not lost. In summary, the whole management method realizes high-precision identification and response control of communication fluctuations in complex sea areas through the "three-step progressive strategy identification-level division-feedback control" structure. From the physical layer, it avoids link fluctuations, command loss and other problems caused by electromagnetic conflicts and speed changes, and improves the robustness, safety and real-time performance of the ship battery system operation control.

[0062] Embodiment 2, please refer to Figure 1 , specifically:

[0063] S1 includes S11;

[0064] S11, the communication interference collection point includes a first collection point C1, a second collection point C2 and a third collection point C3; and based on the communication interference collection point, a communication interference dataset is collected;

[0065] The communication interference dataset includes the electromagnetic field strength Eavg, the ship speed Vship and the packet loss rate Pdrop;

[0066] The first collection point C1 is arranged in a communication module in the ship container battery system, collects an electromagnetic field intensity Eavg of communication interference parameters, and detects a unit frequency band electromagnetic signal intensity in a current sea area range in real time to reflect a basic interference intensity change of a communication environment.

[0067] The second collection point C2 is arranged in a ship navigation system, collects a ship speed Vship, and is used for identifying communication jitter interference influence caused by rapid movement of a ship body.

[0068] The third collection point C3 is arranged in a communication log of the communication module in the ship container battery system, extracts a ratio of a data packet sending failure number to a total sending number in a past set time window to obtain a packet loss rate Pdrop, and represents historical stability of a communication link.

[0069] S1 further includes S12;

[0070] S12, a data link connection is established between the communication interference collection points and a communication management processing module of the ship container battery system through a wired data interface, collection strategies are set for all collection points in the communication interference collection points, and collected communication interference data sets are transmitted to the communication management processing module;

[0071] The collection strategy includes a collection period setting strategy and a collection frequency adjustment strategy.

[0072] The collection period setting strategy is set and updated through a period configuration table of the communication processing module, wherein the period configuration table is obtained by configuring a basic collection period for the communication interference collection points, and specifically, the basic collection period of the first collection point C1 is 1000 milliseconds, the basic collection period of the second collection point C2 is 2000 milliseconds, and the basic collection period of the third collection point C3 is 3000 milliseconds.

[0073] The collection frequency adjustment strategy reduces the basic collection periods of the first collection point C1 and the third collection point C3 by 50% when the ship speed Vship is greater than 25 knots, and the second collection point C2 keeps the basic collection period of the ship navigation system unchanged.

[0074] S1 further includes S13;

[0075] S13, the communication interference data sets are received in real time in the communication management processing module, and the received communication interference data sets are preprocessed to obtain standardized data sets.

[0076] The preprocessing includes data filtering, dimension normalization and standardized matrix construction.

[0077] The data filtering is used to clean random noise and invalid fluctuations in the communication interference data sets by using a digital low-pass filtering algorithm and a sliding average algorithm, and to output stable communication interference data sets.

[0078] Dimensionless normalization is to map the data in different physical unit dimensions to the interval [0, 1] by using the Min-Max normalization method, so as to eliminate the influence of unit dimension;

[0079] Standardization matrix construction is to construct a standardization data set matrix by the dimensionless normalized communication interference data set, the standardization data set matrix has multiple rows and multiple columns, each row corresponds to a sampling period record, and each column corresponds to a related parameter in the communication interference data set, wherein each column in the standardization data set matrix corresponds to the table conversion data of each row sampling period.

[0080] In this embodiment, the first collection point C1 of the method is arranged in the communication module, because the communication module is closest to the transmitting / receiving antenna, and can first perceive the disturbance signal of the electromagnetic field strength in the sea area. If C1 is arranged at a non-communication path position, electromagnetic sampling and actual communication link are easy to be out of synchronization, resulting in evaluation error and response lag. Therefore, the arrangement can effectively ensure that the communication interference judgment is highly consistent with the real state of the physical link. The second collection point C2 is arranged in the ship navigation system, and is used to collect the ship speed Vship, because the change of the ship speed will directly affect the alignment angle of the communication antenna and the signal stability. Especially during the acceleration or turning process of the ship, the dramatic change of the ship speed will cause shaking and signal deviation, and the link stability is reduced. Through the arrangement, the interference factors caused by the ship dynamics can be perceived in advance, and the feedforward regulation of communication management is realized. The third collection point C3 is arranged in the communication log module, in order to make up the coupling judgment of the "current communication state" and the "historical communication performance". The packet loss rate Pdrop can truly reflect the average stability of the communication of the system in the past period of time, especially when the sea environment changes suddenly but has not been identified by the real-time sampling, C3 provides a trend-based compensation evaluation dimension. The introduction of the basic collection period and the dynamic adjustment mechanism based on Vship in the collection strategy is to balance the real-time response ability and the communication resource consumption. For example, when Vship>25 knots, the ship body is in a high-speed sailing state, the interference frequency is improved, at this time, the dynamic reduction of the collection period can improve the sampling density, so as to avoid missing the key interference signal, and the period is restored when the ship speed is stable, so as to reduce the data redundancy and the system processing pressure. The introduction of the three-layer preprocessing mechanism of filtering, normalization and matrix structuring in the communication management processing module is to solve the problems of high noise, non-uniform dimension and discontinuous structure in the original data. For example, the unit of the ship speed is knot, and the unit of the field strength is dBμV / m. If the mapping is not uniform, errors will occur in the formula model due to the inconsistency of the units, and in severe cases, the communication level division error or the false triggering of the control strategy will be caused. The standardization matrix further enables the data to be efficiently called by the model, and supports the stable output of the subsequent algorithm.

[0081] Embodiment 3, please refer toFigure 1 Specifically:

[0082] S2 includes S21;

[0083] S21. Based on the combination of Euclidean distance formula and exponential stability formula, a communication environment adaptability algorithm model is constructed. The electromagnetic field strength Eavg and ship speed Vship are extracted from the standardized dataset of the latest sampling period and input into the communication environment adaptability algorithm model. The communication environment adaptability index Li is output to quantitatively analyze the stability adaptability of the communication system under the current environment.

[0084] The communication environment adaptability index Li is output through the following communication environment adaptability algorithm model: Where k represents the speed disturbance coefficient, set to 0.4, to weight the impact of speed on communication instability;

[0085] This formula combines electromagnetic field strength Eavg and ship speed Vship in the form of a two-dimensional Euclidean distance formula, and sets a speed disturbance coefficient k to control the weight of the speed, thereby achieving flexible adjustment in different communication strategies. Finally, it forms an adaptive output controlled by an exponential stable formula to avoid extreme changes.

[0086] Among them, electromagnetic field strength Eavg is the main source of interference to communication stability; rapid changes in ship speed Vship affect link maintenance; the combination constitutes a dual reflection of communication performance in the actual environment, and can provide quantitative judgment on channel selection, strategy switching and other aspects. The closer the communication environment adaptability index Li is to 1, the more stable the communication environment is, and the closer it is to 0, the worse the communication environment is.

[0087] Dimensional consistency analysis: Electromagnetic field strength Eavg and ship speed Vship are both dimensionless parameters after dimensional normalization. Therefore, the output result of the communication environment adaptability index Li is also dimensionless, and the output range is limited to (0,1).

[0088] S2 also includes S22;

[0089] S22. Based on the communication environment adaptation index Li in historical data, a preset environmental interference threshold is set. The environmental interference threshold includes a stability threshold Lst and a fluctuation threshold Lfl. The stability threshold Lst is set based on the statistical mean of the communication environment adaptation index Li in the historical stable operating period, and the fluctuation threshold Lfl is set based on the minimum acceptable communication performance of the communication environment adaptation index Li under historical interference and disturbance conditions.

[0090] The real-time communication environment adaptability index Li is then compared with the environmental interference threshold, and based on the comparison results, the communication environment level is classified. The specific comparison content is as follows:

[0091] When the communication environment adaptation index Li is greater than or equal to the stability threshold Lst, it is classified as L1 level, indicating a stable communication zone;

[0092] When the communication environment adaptation index Li is less than the fluctuation threshold Lfl and greater than the stability threshold Lst, it is classified as L2 level, indicating a communication fluctuation zone;

[0093] When the communication environment adaptation index Li is less than the fluctuation threshold Lfl, it is classified as L3 level, indicating a communication risk zone.

[0094] S2 also includes S23;

[0095] S23, the communication management processing module executes the following corresponding control strategy based on the classification result of the communication environment level;

[0096] When classified as L1 level, the main communication link is used for command sending and operation data uploading, the sampling period is kept at the basic value, and the container battery system executes the normal charging and discharging control strategy;

[0097] When classified as L2 level, the standby communication link is activated for listening, the communication module executes the collection frequency adjustment strategy, and the operation data is compressed, only keeping four types of state parameters of voltage, current, SOC and temperature, and reducing the transmission load of non-critical data;

[0098] When classified as L3 level, the redundant communication mechanism is immediately triggered.

[0099] In this embodiment, in S21, the method is used to solve the problem that multiple interference sources are intertwined and difficult to be quantified in a complex marine environment by introducing electromagnetic field strength Eavg and ship speed Vship into the calculation of Euclidean distance and superimposing exponential mapping processing. Especially in the scene of severe fluctuations in the marine communication environment, if only a single interference factor is considered, it will lead to system misjudgment and cannot accurately reflect the real stability of the communication link. This combined modeling method enables the communication environment adaptation index Li to reflect the complexity of the environment in two dimensions and has dynamic sensitivity adjustment capability, and has continuity at different strategy switching points, avoiding sudden control. In S22, the double-threshold judgment method of stable threshold Lst and fluctuation threshold Lfl is introduced to overcome the disadvantages of "single threshold division fuzzy boundary". For example, when the communication environment adaptation index Li is in the fluctuation interval of 0.55~0.6, without clear division standard, it is easy to appear strategy frequent switching or control jitter. Through the data statistics extraction of the historical stable section and the disturbance section, the grade division has statistical rationality and engineering adaptability, and the L1~L3 grades divided can not only cover most of the marine communication states, but also enhance the identification robustness of the edge state. In S23, the three-level control strategy response is set to maximize the control efficiency and the dynamic matching ability of the communication load in different levels. For example, the data compression and standby link monitoring mechanism introduced in L2 level can avoid the main link bandwidth congestion caused by uploading of non-critical data; the mechanism in L3 level directly triggers the redundant communication process, effectively preventing the interruption of core control instructions caused by link failure. This level-driven control strategy has the fine communication scheduling ability of "on-demand response". In summary, the S2 module builds a stable, sensitive and quantifiable environment evaluation model, and superimposes a dynamic control response, so that the system can realize the whole-process closed-loop management and control mechanism of pre-judgment, identification, grading and response when facing multiple interference scenes such as electromagnetic disturbance and ship speed mutation, thereby significantly improving the communication continuity and control stability of the ship container type battery system in extreme sea conditions.

[0100] Embodiment 4, please refer to Figure 1 , in particular:

[0101] S3 further comprises S31;

[0102] S31, after triggering the redundant communication mechanism, the current communication environment adaptation index Li is combined with the packet loss rate Pdrop to calculate the communication stability evaluation index Tqs, and the stability of the current communication link in a specific interference environment is analyzed. The specific calculation formula of the communication stability evaluation index Tqs is: ; the 1 in the formula is a constant, which is used to reflect the negative correlation factor that "the more the packet loss, the worse the stability", which belongs to the common model conversion factor in the communication feedback mechanism, which directly reflects the combination of two typical disturbance factors in the communication environment, electromagnetic field interference and ship motion state to obtain the communication environment adaptation index Li, and then the fusion effect between the packet loss rate Pdrop, that is, the communication link performance feedback;

[0103] By multiplying the communication environment adaptation index Li and (1-Pdrop), the dynamic mutual restriction between the "external interference environment" and the "internal communication state" can be reflected, which is suitable for quantitative description and response control of unstable maritime communication environment;

[0104] Dimension consistency analysis, the packet loss rate Pdrop is a dimensionless parameter after dimension normalization, the communication environment adaptation index Li output result also belongs to dimensionless, so the communication stability evaluation index Tqs also belongs to dimensionless.

[0105] S3 also includes S32;

[0106] S32, compare the stability threshold T1 with the communication stability evaluation index Tqs, and execute the feedback control mechanism based on the comparison result, the stability threshold T1 is obtained by calculating the communication stability evaluation index Tqs based on multiple simulation sampling of typical sea areas, and synthesizing the minimum tolerable communication stability evaluation index Tqs critical value under multiple typical sea areas, the typical sea areas include ship operation in port near shore, high interference sea area and weak signal environment in the ocean; the specific comparison content is as follows:

[0107] When the communication stability evaluation index Tqs is greater than or equal to the stability threshold T1, maintain the current main communication link and control rhythm;

[0108] When the communication stability evaluation index Tqs is less than the stability threshold T1, start the redundant communication link, and perform the redundant link reconstruction mechanism, the compression upload mechanism and the instruction degradation execution mechanism for fault tolerance protection.

[0109] S3 includes S33;

[0110] S33, the redundant link reconstruction mechanism activates the standby channel communication link, which includes at least one of LoRa communication module, shore-based low-frequency communication module and shipborne satellite communication module, and then calls the redundant communication strategy control unit to execute the erasure coding segmentation encoding algorithm, divides the communication data stream into several data segments, and adds redundant check blocks to each data segment to improve error recovery capability, and dynamically allocates transmission priority and parallel sending path of data segments according to the communication capability of the standby channel communication link, to ensure that the key control information has higher receiving success rate;

[0111] The compression upload mechanism starts a state data minimum subset transmission strategy, which only selects four types of core operating state quantities including battery voltage, battery current, battery monomer SOC and battery monomer temperature for uploading; at the same time, compression encoding is started, and run length encoding (RLE) combined with differential encoding algorithm is used for high compression ratio encoding; the encoded communication data is packaged and preferentially delivered to the auxiliary channel communication link, so as to reduce the communication bandwidth pressure and upload failure probability in the high packet loss rate environment.

[0112] The instruction degradation execution mechanism suspends the discharge task, automatically switches to the emergency mode running state, only retains the heartbeat signal communication link, system abnormal alarm mechanism and health state monitoring function in the emergency mode, and packages and uploads the communication alarm identifier and the current communication environment L3 level to the ship bridge display interface to realize remote manual takeover preparation.

[0113] In the embodiment, the calculation model of the communication stability evaluation index Tqs in S31 is set to solve the problem that the communication environment adaptation index Li can only reflect external environmental disturbance and cannot reflect historical reliability of the link. By fusing the packet loss rate Pdrop and the communication environment adaptation index Li, the communication stability evaluation index Tqs can take into account external electromagnetic disturbance and internal communication quality, thereby constructing a more real communication stability judgment system. The combination formula directly corresponds to the fact that "bad environment + serious packet loss = high risk of link" in physical meaning. In S32, the stability threshold T1 is set and obtained based on the typical sea area data to avoid false triggering of the control mechanism in non-representative communication scenarios. For example, although there is electromagnetic interference in the port area communication, the link strength is good. If T1 is set too high, it is easy to misjudge as a risk area. The T1 threshold value obtained by simulating a large sample of sea area scenarios has high environmental adaptability and fault tolerance ability, which can effectively avoid strategy misoperation or link collapse. In S33, the initial intention of designing the three-layer communication guarantee mechanism is that if only the main link is relied on in the communication risk state, the control will be interrupted and even safety hazards will be caused. The redundant link reconstruction mechanism preferentially guarantees the successful delivery of key control data, realizes error recovery ability through erasure coding, and is especially suitable for low-bandwidth link scenarios such as LoRa; the compression upload mechanism greatly reduces the communication load by using RLE + differential compression, and maintains effective data flow in the case of high packet loss rate; the instruction degradation execution mechanism constructs the minimum available communication and control closed loop in the emergency mode according to the "survival function priority reservation" principle, and avoids the problem of control disconnection caused by complete interruption of the link. In summary, the S3 module realizes the dynamic closed-loop control path from "detection, identification, fault tolerance to feedback" by constructing multi-dimensional evaluation, double threshold judgment and multi-level communication fault tolerance mechanism, so that the container type battery system still has controllability and information backhaul in the extreme communication environment, and the system robustness is significantly enhanced.

[0114] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since various modifications can be made by those skilled in the art, without departing from the spirit and scope of the application, which are defined by the appended claims and their equivalents.

Claims

1. A method for managing the charging and discharging communication of a containerized battery system, characterized in that: Includes the following steps: S1. Set up communication interference collection points in the ship's containerized battery system, collect communication interference datasets in real time, and transmit the collected communication interference datasets to the communication management and processing module for preprocessing to obtain standardized datasets. S2. Based on the standardized dataset, calculate and output the communication environment adaptability index Li. Compare the communication environment adaptability index Li with the preset environmental interference threshold to classify the communication environment level and execute the corresponding strategy. S2 includes S21; S21. Based on the combination of Euclidean distance formula and exponential stability formula, construct a communication environment adaptability algorithm model, then extract two parameters, electromagnetic field strength Eavg and ship speed Vship, from the standardized dataset of the latest sampling period, input them into the communication environment adaptability algorithm model, output the communication environment adaptability index Li, and perform quantitative analysis on the stability adaptability of the communication system under the current environment. S2 further includes S22; S22. Based on the communication environment adaptation index Li in historical data, a preset environmental interference threshold is set, wherein the environmental interference threshold includes a stability threshold Lst and a fluctuation threshold Lfl. The real-time communication environment adaptability index Li is then compared with the environmental interference threshold, and based on the comparison results, the communication environment level is classified. The specific comparison content is as follows: When the communication environment adaptability index Li ≥ the stability threshold Lst, it is classified as L1 level; When the fluctuation threshold Lfl ≤ communication environment adaptability index Li < stability threshold Lst, it is classified as level L2; When the communication environment adaptability index Li < the fluctuation threshold Lfl, it is classified as level L3; S2 also includes S23; S23. The communication management and processing module executes the following corresponding control strategies based on the communication environment level classification results; When classified as L1 level, the main communication link is used for command transmission and operation data upload, the sampling period is kept at the basic value, and the containerized battery system executes the conventional charge and discharge control strategy. When classified as L2 level, the backup communication link is activated for monitoring, the communication module is adjusted to execute the acquisition frequency adjustment strategy, and the operating data is compressed, retaining only four types of status parameters: voltage, current, SOC, and temperature. When classified as L3, the redundant communication mechanism is immediately triggered; S3. When the communication environment level is L3, the redundant communication mechanism is triggered. The redundant communication mechanism calculates the communication stability evaluation index Tqs through the communication environment adaptability index Li, sets the stability threshold T1, and executes the feedback control mechanism. S3 also includes S31; S31. After triggering the redundant communication mechanism, the communication stability evaluation index Tqs is calculated and output based on the current communication environment adaptation index Li and the packet loss rate Pdrop, and the stability of the current communication link under specific interference environment is analyzed.

2. The charging and discharging communication management method for a containerized battery system according to claim 1, characterized in that: S1 includes S11; S11, The communication interference collection points include a first collection point C1, a second collection point C2, and a third collection point C3; and based on the communication interference collection points, a communication interference dataset is collected. The communication interference dataset includes electromagnetic field strength Eavg, ship speed Vship, and packet loss rate Pdrop. The first collection point C1 is set in the communication module of the ship's containerized battery system to collect the communication interference parameter electromagnetic field strength Eavg; The second data collection point C2 is set on the ship's navigation system to collect the ship's speed Vship; The third collection point C3 is set in the communication log of the communication module of the ship's containerized battery system. The packet loss rate Pdrop is obtained by extracting the ratio of the number of failed data packet transmissions to the total number of transmissions within a set time window in the past.

3. The charging and discharging communication management method for a containerized battery system according to claim 2, characterized in that: S1 further includes S12; S12. Establish a data link connection between the communication interference collection points and the communication management and processing module of the ship's containerized battery system through a wired data interface, set the collection strategy for all collection points in the communication interference collection points, and transmit the collected communication interference dataset to the communication management and processing module. The acquisition strategy includes an acquisition period setting strategy and an acquisition frequency adjustment strategy; The acquisition cycle setting strategy is set and updated through the cycle configuration table of the communication processing module. The cycle configuration table is obtained by configuring the basic acquisition cycle for the communication interference acquisition points. Specifically, the basic acquisition cycle of the first acquisition point C1 is 1000 milliseconds, the basic acquisition cycle of the second acquisition point C2 is 2000 milliseconds, and the basic acquisition cycle of the third acquisition point C3 is 3000 milliseconds. The acquisition frequency adjustment strategy reduces the basic acquisition cycle of the first acquisition point C1 and the third acquisition point C3 by 50% when the ship speed Vship is greater than 25 knots, while keeping the basic acquisition cycle of the ship navigation system unchanged for the second acquisition point C2.

4. The charging and discharging communication management method for a containerized battery system according to claim 3, characterized in that: S1 also includes S13; S13. The communication management and processing module receives the communication interference dataset in real time and preprocesses the received communication interference dataset to obtain a standardized dataset. The preprocessing includes data filtering, dimensional normalization, and standardized matrix construction. The data filtering employs a digital low-pass filter algorithm and a moving average algorithm to clean up random noise and invalid fluctuations in the communication interference dataset, outputting a stable communication interference dataset. The dimensional normalization is achieved by using the Min-Max normalization method to uniformly map data of different physical unit dimensions to the interval [0,1] for all parameters in the communication interference dataset after data filtering, thereby eliminating the influence of unit dimensions. The standardized matrix is ​​constructed by using a dimensionally normalized communication interference dataset to build a standardized dataset matrix. The standardized dataset matrix has a multi-row, multi-column structure, with each row corresponding to a sampling period record and each column corresponding to relevant parameters in the communication interference dataset. Each column in the standardized dataset matrix corresponds to the table-transformed data of each row's sampling period.

5. The charging and discharging communication management method for a containerized battery system according to claim 1, characterized in that: S3 further includes S32; S32. Set a stability threshold T1 and compare it with the communication stability evaluation index Tqs, and execute a feedback control mechanism based on the comparison results; the specific comparison content is as follows: When the communication stability assessment index Tqs ≥ stability threshold T1, maintain the current main communication link and control rhythm; When the communication stability assessment index Tqs < stability threshold T1, redundant communication links are activated, and redundant link reconstruction mechanism, compressed upload mechanism, and instruction degradation execution mechanism are implemented to ensure fault tolerance.

6. The charging and discharging communication management method for a containerized battery system according to claim 5, characterized in that: S3 includes S33; S33. The redundant link reconstruction mechanism activates the secondary channel communication link in standby state. The secondary channel communication link includes at least one of LoRa communication module, shore-based low-frequency communication module and shipborne satellite communication module. Then, by calling the redundant communication strategy control unit, the erasure coding segmentation algorithm is executed to divide the communication data stream into several data segments and add a redundancy check block to each data segment. The transmission priority and parallel transmission path of the data segments are dynamically allocated according to the communication capability of the secondary channel communication link. The compressed upload mechanism employs a minimum subset transmission strategy for status data, which selects only four core operating status parameters, including battery voltage, battery current, battery cell SOC, and battery cell temperature, for upload. Simultaneously, it initiates compression encoding, using run-length encoding (RLE) combined with differential encoding for high compression ratio encoding. The encoded communication data is packaged and prioritized for delivery to the secondary channel communication link. The command downgrade execution mechanism automatically switches to emergency mode operation by pausing the discharge task. The emergency mode only retains the heartbeat signal communication link, system abnormal alarm mechanism and health status monitoring function, and packages the communication alarm identifier with the current communication environment L3 level and uploads it to the ship's bridge display interface.

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