UPS and battery charge and discharge control method under heterogeneous structure

Abstract

The present invention discloses a charge and discharge control method for UPS and batteries under a heterogeneous structure. The battery system provided is a charge and discharge heterogeneous structure, which reduces the risk of mismatched charging or uncontrollable charging that may occur when the battery system is connected to uninterruptible power supplies of different brands and models on site. In addition, when the battery system voltage is greater than the charger voltage, the battery system has a discharge trend. If there is a conduction loop between the two, the battery system may reversely discharge the charger and other equipment. When the UPS power supply is added to the conduction loop between the battery system and the charger, the charger may charge the battery and load the UPS power supply at the same time. However, if the discharge link of the battery system shares the charging link constructed between the charger and the battery system, charge and discharge disorder is likely to occur when the battery system is discharged through the UPS power supply. The heterogeneous structure designed by the present invention solves this problem and increases the stability of discharge.

Description

Technical Field

[0001] The present invention relates to the technical field of battery discharge control, and in particular to a UPS and battery charge and discharge control method under a heterodyne structure. Background Art

[0002] In order to reduce the probability of charging failure, most battery systems adopt a dual charging structure, and the battery system is usually charged by two charging structures: a UPS power system and an independent charging module (charger). The UPS power supply, the charger and the battery system are basically connected with the same port, that is, the output positive poles of the UPS power supply, the charger and the battery system are connected to each other, and the output negative poles are connected to each other. When the UPS power supply is in charging mode, the battery system can be charged independently or together with the charger. When the UPS power supply is in discharge mode, the charger is usually controlled to stop working, and the battery system supplies power to the UPS power supply alone. However, there are many brands and models of UPS power supplies, which may not match the battery system. At this time, the function of the UPS power supply in the same port structure configured for the battery system will fail, and the UPS power supply will be unable to charge the battery system, and the battery system will be unable to discharge the UPS power supply. Therefore, how to avoid charging and discharging failures in the dual charging structure is the first technical problem to be solved by this application.

[0003] In addition, when the UPS power supply and the battery system are matched in charge and discharge, when the battery system and the charger discharge to the UPS power supply at the same time, the discharge of the battery system with different battery pack balance and in different environmental conditions may not be stable. At the same time, the battery pack imbalance of the UPS power supply itself and the environmental conditions it is in may also cause instability when the battery system and the charger discharge it at the same time. In this case, how to stably output the unstable voltage output by the battery system and the stable voltage output by the charger to the UPS power supply at the same time is the second technical problem to be solved by this application. Summary of the invention

[0004] The present invention aims to ensure that the dual-charging structure charges the battery system stably and ensure that the battery system with unstable discharge and the charger with stable discharge simultaneously discharge the UPS power supply stably, and provides a charging and discharging control method for UPS and batteries under a heterogeneous structure.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A method for controlling the charging and discharging of a UPS and a battery under a heterodyne structure is provided, the steps comprising:

[0007] S1, for a battery system operating under current operating parameters of the battery system, obtaining an initial inductance of a variable inductor required to be configured for a UPS power supply operating under current operating parameters of the UPS power supply;

[0008] S2, real-time monitoring of the output voltage of the battery system , and according to Is it greater than the output voltage of the charger? According to different judgment results, the corresponding discharge strategy for the UPS power supply is executed by adjusting the inductance of the variable inductor after accuracy verification.

[0009] Preferably, step S1 specifically includes the steps of:

[0010] S11, obtaining the output voltage of the charger that forms a dual charging structure with the UPS power supply , and match the output voltage associated with it from the curve library and associating a fitting curve of the battery pack historical parameter range within which the current operating parameters of the battery system fall, the average inductance adjustment amount within which the current operating parameters of the UPS power supply fall, and the UPS required power;

[0011] S12, obtaining the current required charging power of the UPS power supply as the load, and substituting the power as an independent variable into a first fitting function used to fit the fitting curve, to obtain a y value of the first fitting function;

[0012] S13, calculating a first influence amount of the current operating parameters of the coupled battery system and the current operating parameters of the UPS power supply on adjusting the inductance of the variable inductor to the y value;

[0013] S14, obtaining a historical true value corresponding to the y value, and then calculating a second influence amount of the corresponding historical battery system operating parameters and historical UPS power supply operating parameters in the historical secondary discharge control of the battery system on adjusting the inductance of the variable inductor to the historical true value;

[0014] S15, determining whether a deviation between the first influence amount and the second influence amount having a parameter type corresponding relationship is less than a preset deviation threshold,

[0015] If yes, the y value obtained in step S12 is used as the initial inductance obtained in step S1;

[0016] If not, it is determined that the initial inductance acquisition fails, and a prompt is given to manually adjust the initial inductance.

[0017] Preferably, the current operating parameters of the battery system include any one or more of the current system battery pack imbalance of the battery system, the first temperature of the current environment, and the first humidity; the current operating parameters of the UPS power supply include any one or more of the current UPS battery pack imbalance of the UPS power supply, the second temperature of the current environment, and the second humidity.

[0018] Preferably, when forming each fitting point in the same fitting curve, the second environmental operating condition of the UPS power supply and the imbalance of the UPS battery group in the UPS power supply are maintained within the preset corresponding parameter range, and the first environmental operating condition of the battery system and the imbalance of the system battery group in the battery system are maintained within the preset corresponding parameter range.

[0019] Preferably, the method for calculating the first influence amount comprises the steps of:

[0020] S131, calculating a parameter value deviation for each first parameter in the current battery system operating parameters and a corresponding second parameter in the current operating parameters of the UPS power supply that is of the same type as the first parameter;

[0021] S132, performing normalization operation on the parameter value deviation associated with each of the first parameters after dimension processing, to obtain a normalized deviation value associated with a parameter array consisting of the first parameters and the second parameters having a type corresponding relationship;

[0022] S133: Calculate the product of the y value and the normalized deviation value as the first influence value associated with the parameter array bound to the normalized deviation value.

[0023] Preferably, the method for calculating the second influence amount comprises the steps of:

[0024] S141, calculating the mean value of the parameter value deviation between each first historical parameter of the historical battery system operating parameters monitored at each inductance adjustment moment in the same historical discharge control and the corresponding second historical parameter of the same type as the first historical parameter in the historical UPS power supply operating parameters;

[0025] S142, performing a normalization operation on the parameter value deviation mean associated with each first historical parameter after dimension processing, so as to obtain a normalized historical deviation value associated with a historical parameter array consisting of the first historical parameter and the second historical parameter having a type corresponding relationship;

[0026] S143: Calculate the product of the historical true value and the normalized historical deviation value as the second influence value associated with the historical parameter array bound to the normalized historical deviation value.

[0027] Preferably, in step S2, the inductance adjustment method introducing the verification mechanism includes a first adjustment method, wherein the first adjustment method is to determine The inductance adjustment method is performed when the first adjustment method comprises the steps of:

[0028] A1, controlling the battery system to charge the variable inductor having the initial inductance to: making the voltage across the variable inductor and The absolute value of the difference is smaller than a preset first absolute value threshold, and and The absolute value of the difference is less than a preset second absolute difference threshold; represents the output voltage of the battery system when the variable inductor having the initial inductance starts to be charged;

[0029] A2, in Monitor the output voltage of the battery system in real time at all times Compared to The previous moment Monitor the output voltage of the battery system in real time at all times Big, and When the first strategy is executed, the calculation is reducing the inductance of the variable inductor by a first proposed reduction amount at a time;

[0030] when ,and When the second strategy is executed, the calculation is a second proposed reduction amount for reducing the inductance of the variable inductor at a time;

[0031] A3, after reducing the inductance of the variable inductor by the first intended reduction amount or the second intended reduction amount, monitor the input voltage fluctuation range of the UPS power supply, and when the fluctuation range exceeds the preset fluctuation threshold range, prompt human intervention to adjust the inductance to control the fluctuation range to be within the fluctuation threshold range.

[0032] Preferably, in step A2, the first strategy for calculating the first intended reduction amount is expressed as: , express The inductance after adjustment at all times; express The predicted inductance after time adjustment, is a positive value;

[0033] The prediction is obtained through the following steps:

[0034] A21, extract history The output voltage of the battery system at the moment Compared with the previous The output voltage of the battery system at the time Big, and , Both greater than of and , and then solve for the difference , and same Inductance at time and Inductance at time The difference Composition data points , and then is the independent variable, Fitting each data point for the dependent variable through a second fitting function;

[0035] A22, will and Substituting the difference into the second fitting function, we get .

[0036] Preferably, the data for fitting using the second fitting function in the second strategy is generated from: The output voltage of the battery system at the moment Compared with the previous The output voltage of the battery system at the time Small, and , Both greater than of and data.

[0037] Preferably, the charging and discharging positive electrode of the UPS power supply is connected to the discharging positive electrode of the battery system, and the positive electrode of the charger is connected to the charging positive electrode of the battery system; the charging and discharging negative electrode of the UPS power supply is connected to the negative electrode of the charger and connected to the charging and discharging negative electrode of the battery system;

[0038] The positive electrode of the system battery pack in the battery system is connected to the positive electrode of the discharge diode, and the negative electrode of the discharge diode is connected in series with a discharge relay and then connected to the charging and discharging positive electrode of the UPS power supply; the negative electrode of the charging diode is connected to the positive electrode of the discharge diode, and the positive electrode of the charging diode is connected in series with a charging relay and serves as the charging positive electrode of the battery system; the positive electrode of the system battery pack in the battery system is connected to the positive electrode of the discharge diode, and the negative electrode of the system battery pack serves as the charging and discharging negative electrode of the battery system, thereby forming a discharge circuit in which the charger and the battery system discharge to the UPS system at the same time.

[0039] The present invention has the following beneficial effects:

[0040] 1. The dual-charging structure with different port design ensures that the battery system is charged only by the charger before the charging relay RL3 is disconnected, avoiding the situation that the UPS power supply cannot charge the battery system independently due to the mismatch between the UPS power supply of different brands and models and the battery system, and avoiding the situation that the charging of the battery system is uncontrollable due to the unstable combined charging voltage caused by the aging of the UPS power supply battery, its own fault, etc. when the UPS power supply and the charger charge the battery system at the same time (once the UPS power supply charging voltage is unstable, it can be controlled that only the charger charges the battery system).

[0041] 2. The first influence amount for adjusting the inductance value of the variable inductor to the value y calculated through steps S11-S13 characterizes the influence relationship of the current working parameters of the battery system and the current working parameters of the UPS power supply on the adjustment accuracy of the variable inductor after being coupled (jointly), that is, the influence relationship of the current battery environment temperature and humidity and the imbalance of the system battery pack in the current working parameters of the battery system and the UPS environment temperature and humidity and the imbalance of the UPS battery pack in the current working parameters of the UPS power supply on the adjustment accuracy of the variable inductor after being coupled is quantified, so that the initial inductance after passing the verification of steps S14-S15 can more quickly and accurately offset the influence of the coupled current working parameters of the battery system and the current working parameters of the UPS power supply on the stability of the discharge voltage of the UPS power supply discharged by the charger and the battery system at the initial moment of steady current, thereby achieving the effect of fast and accurate voltage stabilization.

[0042] 3. Through steps S131-S133, a method for specifically quantifying the influence of coupling parameters on the accuracy of inductance adjustment is provided. In this quantification method, by calculating the parameter value deviation of the first parameter and the second parameter having a type correspondence relationship, and by normalizing the parameter value deviation, and using the product of the y value and the normalized deviation value as the first influence quantity associated with the parameter array, a simple method is used to quickly achieve a quantitative prediction of the influence of the coupling parameters on the accuracy of inductance adjustment.

[0043] 4. Through steps S14-S15, it is realized to check whether the y value predicted in step S12 is suitable for the current operating parameters of the battery system and the current operating parameters of the UPS power supply, as a correctness check of the initial inductance of the variable inductor required to be configured for the UPS power supply, to ensure that the inductance of the variable inductor can be adjusted more quickly and accurately in the future.

[0044] 5. The beneficial effects of obtaining the initial inductance through step S1 are specifically explained as follows:

[0045] Since the historical true value corresponding to the initial inductance value as the y value is: under the historical battery system working parameters and the historical UPS power supply working parameters with a coupling relationship, in the process of the dual charging structure composed of the battery system with unstable discharge and the charger with stable discharge discharging simultaneously discharging the UPS power supply, the average value of the inductance after each adjustment of the variable inductance configured for the UPS power supply (the average inductance adjustment value). The first fitting function is used to fit the data points consisting of the average inductance adjustment value of each historical inductance adjustment in the same historical discharge control of the UPS power supply by the dual charging structure and the historical UPS demand power of the UPS power supply to obtain a fitting curve. The y value predicted by the fitting curve also reflects the mean value characteristics of the inductance adjustment, so that the dual charging structure has the initial ability to quickly stabilize the voltage at the beginning of the simultaneous discharge to the UPS power supply under the current parameter coupling relationship, so that the voltage can be stabilized more efficiently in the subsequent period.

[0046] 6. The second fitting function for predicting the inductance preferably adopts a quadratic equation or a higher-order equation. In addition, the battery discharge control system under the heterodyne structure design provided in this embodiment has a feedback mechanism. When the input voltage of the UPS power supply fluctuates abnormally, it means that the automatic adjustment of the inductance by the machine is not effective. At this time, an alarm will be issued to prompt manual intervention to adjust the inductance. This ensures that the second fitting function has a better Predictive effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0048] Figure 1 It is a structural diagram of the charging and discharging interface between a UPS power supply, a charger and a battery system provided by an embodiment of the present invention;

[0049] Figure 2 It is a diagram of the implementation steps of the UPS and battery charge and discharge control method under the heterodyne structure provided by an embodiment of the present invention;

[0050] Figure 3 The variable inductor is configured in Figure 1 Schematic diagram of the charge-discharge heterostructure expressed. DETAILED DESCRIPTION

[0051] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0052] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0053] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0054] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] Before introducing the charging and discharging control method of the UPS and battery under the heterodyne structure provided in the embodiment of the present invention, the circuit structure of the charging and discharging heterodyne between the UPS power supply, charger and battery system provided in this embodiment is first introduced.

[0056] like Figure 1 As shown in the figure, the charging and discharging interface structure design between the UPS power supply, charger and battery system provided in this embodiment is specifically as follows:

[0057] The charging and discharging positive pole (U_BAT+) of the UPS power supply 1 is connected to the discharging positive pole (P+) of the battery system 3, and the positive pole (C_P+) of the charger 2 is connected to the charging positive pole (C+) of the battery system 3; the charging and discharging negative pole (U_BAT-) of the UPS power supply 1 is connected to the negative pole (C_P-) of the charger 2 and connected to the charging and discharging negative pole (P- / C-) of the battery system 3.

[0058] The positive electrode of the system battery pack 31 in the battery system 3 is connected to the positive electrode of the discharge diode D1, and the negative electrode of the discharge diode D1 is connected in series with the discharge relay RL1 and then connected to the charging and discharging positive electrode (U_BAT+) of the UPS power supply 1; the negative electrode of the charging diode D2 is connected to the positive electrode of the discharge diode D1, and the positive electrode of the charging diode D2 is connected in series with the charging relay RL3 to serve as the charging positive electrode (C+) of the battery system 3; the negative electrode of the system battery pack 31 serves as the charging and discharging negative electrode (P- / C-) of the battery system 3.

[0059] The following Figure 1 The working principles of each charging mode and each discharging mode of the charging and discharging system under the heterogeneous structure design are briefly described:

[0060] Description of the battery system charging working mode: 1. The charging and discharging ports of the battery system are designed as different ports, and the internal charging and discharging circuits can be disconnected separately; 2. When charging the battery system, the charging relay and the discharging relay are both closed; when discharging the battery system, the discharging relay is closed and the discharge goes through the discharging circuit; 3. After the battery system is fully charged, the charger is requested to stop charging and disconnect the charging relay; 4. Before the charging relay is disconnected, only the charger can charge the battery system.

[0061] UPS power supply working mode description: 1. The UPS power supply is in discharge mode (no AC power). At this time, the UPS power supply and charger are not working, and the battery system provides power input for the UPS power supply; 2. The UPS power supply is in discharge mode (with AC power). At this time, the UPS power supply is not working, the charger is working, and the battery system and charger provide power input for the UPS power supply; 3. The UPS power supply is in charging mode. At this time, the battery charging circuit is not connected, and the UPS power supply cannot charge the battery system.

[0062] The dual-charging structure with different port designs mentioned above ensures that the battery system is charged only by the charger before the charging relay RL3 is disconnected, thus avoiding the situation where the UPS power supply cannot charge the battery system independently due to the mismatch between the UPS power supply of different brands and models and the battery system, and avoiding the situation where the charging of the battery system is uncontrollable due to the unstable combined charging voltage caused by UPS power supply battery aging, self-failure, etc. when the UPS power supply and the charger charge the battery system at the same time (once the UPS power supply charging voltage is unstable, the battery system can be controlled to be charged only by the charger).

[0063] The following is a detailed description of the charge and discharge control method of the UPS and battery under the heterodyne structure provided in this embodiment.

[0064] The present embodiment provides a UPS and battery charge and discharge control method under a heterodyne structure, such as Figure 2 As shown, the specific steps include:

[0065] S1, for a battery system operating under current operating parameters of the battery system, obtaining an initial inductance of a variable inductor required to be configured for a UPS power supply operating under current operating parameters of the UPS power supply;

[0066] It should be noted here that the environmental conditions of the battery system and the imbalance of the system battery pack in the battery system will affect the stability of the output voltage of the battery system. The discharge control goal of this embodiment is to make the sum of the output voltages of the battery system and the variable inductor as consistent as possible with the output voltage of the charger, and / or to control the difference in the discharge voltage of the UPS power supply to be within the preset difference threshold range, so that during the simultaneous discharge process, the input voltage of the UPS power supply can remain basically stable. But in fact, the actual input voltage input to the UPS power supply is also affected by the working performance of the UPS power supply itself, such as the environmental conditions in which the UPS power supply is currently located, the imbalance of the UPS battery pack and other factors. Therefore, the discharge voltage of the UPS power supply discharged by the battery system and the charger at the same time is usually different from the actual input voltage of the UPS power supply. In order to maintain the actual input voltage of the UPS power supply within the set fluctuation threshold range, the following three issues need to be considered:

[0067] 1. How to quantify the impact of the current working performance of the battery system on the actual input voltage of the UPS power supply under the current working performance;

[0068] 2. After quantifying the degree of impact, how to dynamically adjust the inductance of the variable inductor, and to offset or as much as possible offset the abnormal fluctuation of the actual input voltage of the UPS power supply caused by the current performance defects of the UPS power supply itself or the performance defects of the battery system through the voltage stabilization of the battery system discharge voltage;

[0069] 3. In view of the fact that the battery system and UPS power supply may have different performances at different times, when the battery system and the charger discharge the UPS power supply at the same time, how to set the initial inductance of the variable inductor at different times so that it can discharge to the UPS power supply quickly, accurately and stably, so that its actual input voltage is close to the output voltage of the discharge circuit composed of the battery system and the variable inductor and the charger.

[0070] This embodiment specifically solves the third technical problem through the following steps S11-S15, which specifically include the steps:

[0071] S11, obtaining the output voltage of the charger that forms a dual charging structure with the UPS power supply , that is, obtain Figure 3 The output voltage of charger 2 is shown in , and then match the output voltage from the curve library And a fitting curve of the average inductance adjustment amount and the UPS required power within the battery group historical parameter range within which the current working parameters of the associated battery system fall and the UPS power historical parameter range within which the current working parameters of the UPS power fall;

[0072] For example, the output voltage of charger 2 is , in the Figure 1 The charger and battery system shown in the figure constitute a dual charging structure. Figure 1 In the historical discharge control of the UPS power supply in the example, it is assumed that there are 20 discharge controls on the same UPS power supply, and the required power of the UPS power supply is different in each discharge control. In the 20 historical discharge controls, the required power of the UPS power supply is assumed to be The number of historical discharge controls is assumed to be defined as , then the above example In each historical discharge control, it is assumed that Figure 3 The number of times the inductance of the variable inductor 4 can be adjusted is , The second The adjusted inductance is assumed to be expressed as , then history The first discharge control The average inductance adjustment value adjusted in the historical discharge control is: , The corresponding UPS power requirement is , For the The required power of UPS during the historical discharge control. Each fitting point in the fitting curve is constructed, and each fitting point is fitted into the fitting curve by using a first fitting function.

[0073] It should be noted here that when forming each fitting point in the same fitting curve, the second environmental condition of the UPS power supply and the imbalance of the UPS battery group in the UPS power supply are maintained within the preset corresponding parameter range; when forming each fitting point in the same fitting curve, the first environmental condition of the battery system and the imbalance of the system battery group in the battery system are maintained within the preset corresponding parameter range, that is, when forming the fitting data corresponding to each fitting point in the same fitting curve, the performance of the battery system and the environmental condition remain basically stable, and the performance of the UPS power supply and the environmental condition remain basically stable.

[0074] For example, battery systems and chargers are During the UPS power discharge process (according to the The average inductance adjustment value calculated for each adjustment of the variable inductance in the historical discharge control is equal to the average inductance adjustment value of the UPS power supply in the first discharge control. The historical power demand of the UPS power supply constitutes a fitting point in the fitting curve), the ambient temperature of the UPS power supply is always maintained within the preset UPS power supply ambient temperature threshold range, for example, the UPS power supply environment is always maintained between 20℃-22℃; the ambient humidity of the UPS power supply is always maintained within the preset UPS power supply ambient humidity threshold range, for example, the ambient humidity of the UPS power supply is always maintained between 50%-55%.

[0075] That is: the working parameters of the battery system include the temperature (defined as the first temperature), humidity (defined as the first humidity), and battery pack imbalance (defined as the system battery pack imbalance) of the environment in which the battery system is located. Assume that the current temperature of the battery system is 21°C, the first parameter range of each fitting point in a fitting curve in the curve library is between 20°C and 25°C, the humidity is 52%, the second parameter range of each fitting point in the fitting curve is 50%-60%, and the system battery pack imbalance of the current battery system falls within the third parameter range (system battery pack imbalance preset parameter range) of each fitting point in the fitting curve. Similarly, the working parameters of the UPS power supply include the temperature (defined as the second temperature), humidity (defined as the second humidity), and battery pack imbalance (defined as the UPS battery pack imbalance) of the environment in which the UPS power supply is located. Assuming that the current UPS power supply temperature is 20℃, the fourth parameter range (the ambient temperature range of the UPS power supply) of each fitting point in the fitting curve is between 20℃-22℃, the humidity is 55%, the fifth parameter range (the ambient humidity range of the UPS power supply) of each fitting point in the fitting curve is 50%-55%, and the UPS battery pack imbalance of the current UPS power supply falls into the sixth parameter range (the preset parameter range of the UPS battery pack imbalance) of each fitting point in the fitting curve, then the fitting curve satisfies both the current output voltage of the charger and the The fitting curve is matched from the curve library by the conditions that are associated with the battery pack historical parameter range that the battery system currently falls into and the UPS power supply historical parameter range that the UPS power supply currently falls into.

[0076] Determine the output voltage of the charger , and the matching conditions that the current operating parameters of the battery system fall into the corresponding battery pack historical parameter range, and the current operating parameters of the UPS power supply fall into the corresponding UPS power supply historical parameter range, and after matching the corresponding fitting curve from the curve library with the matching condition, the method for solving the third technical problem provided by this embodiment enters the step of:

[0077] S12, obtaining the current required charging power of the UPS power supply, and substituting it as an independent variable into the first fitting function used to fit the fitting curve matched in step S11, to obtain the y value of the first fitting function;

[0078] In this embodiment, the first fitting function preferably adopts a quadratic equation or a higher-order equation. The first fitting function takes the required charging power when the UPS power supply is used as a load as an independent variable, and when the charger and the battery system are discharged to the UPS power supply at the same time to control the discharge to meet the required charging power, Figure 3 The average value of each inductance adjustment performed by the variable inductor 4 in the UPS is taken as the dependent variable. As long as there are enough data fitting points consisting of the historical power demand of the UPS power supply and the historical average inductance adjustment value associated with the historical power demand, the coefficients and constant terms of a quadratic equation or a higher-order equation can be solved.

[0079] In step S12, the calculated y value of the fitting function is the average proposed adjustment of the inductance that can meet the current required charging power of the UPS power supply under the condition that the current operating parameters of the UPS power supply fall into the UPS power supply historical parameter range associated with the fitting curve matched in step S11, and the current operating parameters of the battery system fall into the battery pack historical parameter range associated with the fitting curve, which is a predicted value.

[0080] After calculating the average proposed adjustment amount of the inductor that can meet the required charging power of the UPS power supply, the method for solving the third technical problem provided in this embodiment proceeds to the steps of:

[0081] S13, calculating a first influence of the current working parameters of the coupled battery system and the current working parameters of the UPS power supply on adjusting the inductance of the variable inductor to the value y, wherein the calculation method specifically comprises the following steps:

[0082] S131, calculating a parameter value deviation for each first parameter in the current operating parameters of the battery system and a corresponding second parameter in the current operating parameters of the UPS power supply that is of the same type as the first parameter;

[0083] For example, the first parameter includes the temperature (first temperature), humidity (first humidity), and current battery imbalance of the battery system (system battery imbalance) of the current environment of the battery system; the second parameter includes the temperature (defined as the second temperature), humidity (second humidity), and current battery imbalance of the UPS power supply (UPS battery imbalance) of the current environment of the UPS power supply. The first temperature and the second temperature are both temperature parameters, and they are parameters of the same type. The deviation between the first temperature and the second temperature is calculated as the absolute value of the difference between the first temperature and the second temperature. For example, when the first temperature is 21°C and the second temperature is 20°C, the parameter value deviation between the first temperature and the second temperature is 1°C. The parameter value deviation of the first humidity and the second humidity, the parameter value deviation of the system battery imbalance, and the parameter value deviation of the UPS battery imbalance are calculated in the same way.

[0084] S132, performing dimension processing on the parameter value deviation associated with each first parameter and then performing a normalization operation to obtain a normalized deviation value associated with a parameter array consisting of the first parameter and the second parameter having a type corresponding relationship;

[0085] It should be noted here that in step S131, the units of parameter value deviations corresponding to different types of parameters are usually different, so it is necessary to perform isodimensional processing on the deviations of each parameter value so that the deviation units are the same. There are many existing methods for isodimensional processing of data, so they are not described in detail. There are also many existing methods for normalizing the deviations of each parameter value of isodimensional, such as the linear normalization method, so they are also not described in detail. It should also be noted that, assuming that the first parameter is the first temperature and the second parameter is the second temperature, the first temperature and the second temperature constitute a parameter array about temperature.

[0086] S133, calculating the product of the y value obtained in step S12 and the normalized deviation value as the first influence amount associated with the parameter array bound to the normalized deviation value. For example, the normalized deviation value bound to the parameter array consisting of the first temperature and the second temperature is assumed to be 0.3, and the y value is assumed to be 100 henries, then the first influence amount associated with the parameter array is 0.3×100=30 henries.

[0087] Through steps S131-S133, a method for quantifying the influence of coupling parameters on the accuracy of inductance adjustment is provided, which solves the first technical problem mentioned above. In this quantification method, by calculating the parameter value deviation of the first parameter and the second parameter having a type correspondence relationship, and performing equal dimension and normalization processing through the parameter value deviation, and taking the product of the y value and the normalized deviation value as the first influence quantity associated with the parameter array composed of the first parameter and the second parameter, a simple method is used to quickly realize the quantitative prediction of the influence of the coupling parameters on the accuracy of inductance adjustment.

[0088] The first influence quantity for adjusting the inductance of the variable inductor to the value y calculated through steps S11-S13 characterizes the influence relationship of the current working parameters of the battery system and the current working parameters of the UPS power supply on the adjustment accuracy of the variable inductor after being coupled (jointly), that is, the influence relationship of the current battery environment temperature and humidity and the imbalance of the system battery pack in the current working parameters of the battery system and the UPS environment temperature and humidity and the imbalance of the UPS battery pack in the current working parameters of the UPS power supply on the adjustment accuracy of the variable inductor after being coupled is quantified, so that the initial inductance after passing the verification of steps S14-S15 can more quickly and accurately offset the influence of the coupled current working parameters of the battery system and the current working parameters of the UPS power supply on the stability of the discharge voltage of the UPS power supply discharged by the charger and the battery system at the initial moment of steady current, thereby achieving the effect of fast and accurate voltage stabilization.

[0089] After calculating the influence of the coupling parameter on adjusting the inductance of the variable inductor to the y value obtained in step S12 (defined as the first influence) through step S13, the method for solving the third technical problem in this embodiment proceeds to step;

[0090] S14, obtaining a historical true value corresponding to the y value, and then calculating a second influence amount of the corresponding historical battery system operating parameters and historical UPS power supply operating parameters in the historical secondary discharge control of the battery system on adjusting the inductance of the variable inductor to the historical true value;

[0091] The method for obtaining the historical true value corresponding to the y value is:

[0092] The independent variable of the first fitting function is used as the horizontal axis coordinate of the xy axis coordinate system, and the dependent variable is used as the vertical axis coordinate. The historical average inductance adjustment amount associated with the fitting point closest to the predicted point corresponding to the y value in the vertical direction is found as the historical true value corresponding to the y value found.

[0093] The calculation principle of the second influence quantity is the same as the first influence quantity, which is briefly described as follows:

[0094] The historical true value is the average value of each inductance adjustment in the same historical discharge control. In the historical discharge control, the variable inductance was adjusted by The inductance of each historical adjustment is assumed to be , then the historical truth value is . Indicates the first discharge control in the same history Secondary inductance adjustment.

[0095] In the At the time of the first adjustment, assuming that the historical operating parameters of the battery system (defined as the historical battery system operating parameters) include the first historical temperature, the first historical humidity, and the historical imbalance of the system battery pack of the environment in which the battery system is located; the historical operating parameters of the UPS power supply (defined as the historical UPS power supply operating parameters) include the second historical temperature, the second historical humidity, and the historical imbalance of the UPS power supply of the environment in which the UPS power supply is located, then when calculating the second influence amount for adjusting the inductance of the variable inductor to the historical true value, perform the following steps:

[0096] S141, calculating the mean value of the parameter value deviation between each first historical parameter in the historical battery system operating parameters monitored at each inductance adjustment moment in the historical discharge control and the corresponding second historical parameter in the historical UPS power supply operating parameters of the same type as the first historical parameter;

[0097] For example, for the first historical temperature, the first historical humidity, and the historical imbalance of the system battery pack as the first historical parameter, and the second historical temperature, the second historical humidity, and the historical imbalance of the UPS power supply as the second historical parameter. Since the first historical temperature and the second historical temperature are both temperature parameters and the same type, in each The second adjustment time is calculated The deviation between the first historical temperature and the second historical temperature at the time of the adjustment (the absolute value of the difference between the first historical temperature and the second historical temperature, for example, is recorded as ). By the same method, calculate each The deviation between the first historical humidity and the second historical humidity at the time of the second adjustment is recorded as , and calculate each The deviation between the historical imbalance degree of the system battery group and the historical imbalance degree of the UPS power supply at the time of the first adjustment is recorded as .

[0098] The calculation method of the average value of the parameter value deviation of the first historical parameter and the second historical parameter having a type corresponding relationship is as follows: , then the mean deviation of parameter value is: .

[0099] S142, performing a normalization operation on the parameter value deviation mean associated with each first historical parameter after dimension processing, so as to obtain a normalized historical deviation value associated with a historical parameter array consisting of the first historical parameter and the second historical parameter having a type corresponding relationship;

[0100] For example, , , Since the units are different, the three parameter value deviation means are first processed with equal dimensions so that the three parameter value deviation means have the same numerical unit. There are many existing methods for equal dimensions, so they are not explained in detail. Then, the parameter value deviation means after equal dimension processing are normalized, for example, they can be normalized by the existing linear normalization method, so as to obtain the normalized historical deviation value corresponding to each parameter value deviation mean.

[0101] S143, calculating the product of the historical true value of the corresponding y value obtained in step S14 and the normalized historical deviation value as the second influence value associated with the historical parameter array bound to the normalized historical deviation value.

[0102] After calculating the second influence of the historical battery system operating parameters and the historical UPS power supply operating parameters on adjusting the inductance of the variable inductor to the historical true value in step S14, the method for solving the third technology in this embodiment proceeds to step:

[0103] S15, determining whether the deviation between all the first influencing quantities and the second influencing quantities having a corresponding relationship between the parameter types is less than a preset deviation threshold,

[0104] If yes, the value y is used as the initial inductance obtained in step S1;

[0105] If not, it is determined that the initial inductance acquisition fails, and a prompt is given to manually adjust the initial inductance.

[0106] It should be noted here that in step S15, taking the temperature parameter as an example, the first temperature and the second temperature are associated with the first influence quantity corresponding to the temperature parameter, and the first historical temperature and the second historical temperature are also associated with the second influence quantity corresponding to the temperature parameter, which means that the first influence quantity and the second influence quantity have a parameter type correspondence relationship, and this parameter type correspondence relationship is: the parameter type is temperature. Similarly, the parameter type correspondence relationship also includes the parameter type of humidity and the parameter type of battery pack imbalance. Therefore, in step S15, the deviation between the first influence quantity and the second influence quantity actually includes 3 deviations, which are the deviations between the first influence quantity and the second influence quantity corresponding to the parameter type relationship of temperature, humidity, and battery pack imbalance. In step S15, only when it is determined that the deviation of the influence quantity of each parameter type is less than the preset corresponding deviation threshold, it is determined whether the y value calculated in step S12 can be used as the correctness check of the initial inductance value.

[0107] Through steps S14-S15, it is realized to check whether the y value predicted in step S12 is suitable for the current operating parameters of the battery system and the current operating parameters of the UPSS power supply, as a correctness check of the initial inductance of the variable inductor required to be configured for the UPS power supply, ensuring that the inductance of the variable inductor can be adjusted more quickly and accurately in the future.

[0108] The beneficial effects of obtaining the initial inductance through step S1 are specifically explained as follows:

[0109] Since the historical true value corresponding to the initial inductance value as the y value is: under the historical battery system working parameters and the historical UPS power supply working parameters with a coupling relationship, in the process of the dual charging structure composed of the battery system with unstable discharge and the charger with stable discharge discharging simultaneously discharging the UPS power supply, the average value of the inductance after each adjustment of the variable inductance configured for the UPS power supply (the average inductance adjustment value). The first fitting function is used to fit the data points consisting of the average inductance adjustment value of each historical inductance adjustment in the same historical discharge control of the UPS power supply by the dual charging structure and the historical UPS demand power of the UPS power supply to obtain a fitting curve. The y value predicted by the fitting curve also reflects the mean value characteristics of the inductance adjustment, so that the dual charging structure has the initial ability to quickly stabilize the voltage at the beginning of the simultaneous discharge to the UPS power supply under the current parameter coupling relationship, so that the voltage can be stabilized more efficiently in the subsequent period.

[0110] In order to solve the second technical problem, after obtaining the initial inductance of the variable inductor required to be configured for the current UPS power supply through step S1, as shown in FIG. Figure 2 As shown, the UPS and battery charge and discharge control method under the heterodyne structure provided in this embodiment is transferred into the steps:

[0111] S2, real-time monitoring of the output voltage of the battery system , and according to Is it greater than the output voltage of the charger? According to different judgment results, the corresponding discharge strategy for the UPS power supply is executed by adjusting the inductance of the variable inductor after accuracy verification.

[0112] In step S2, there are two kinds of judgment results, the first one is: , and the second is: . Due to the differences in the environment and performance of the battery, or the environment and performance of the UPS receiving the charge, it may be in a floating state. For AC input, the default setting is fixed.

[0113] This embodiment adjusts Figure 3 The goal of the variable inductor shown in FIG. 1 is to make the output voltage of the discharge branch composed of the battery system and the variable inductor always close to , even if and The absolute value of the difference is always within the preset threshold range. In this way, the voltage discharged to the UPS power supply at the same time will not cause unstable discharge due to the excessive discharge voltage difference between the two discharge branches. However, the output voltage of the discharge branch composed of the battery system and the variable inductor is adjusted by adjusting the inductance. Since it takes a certain amount of time for the inductor to store electricity and discharge to a steady current state, once the inductance is not adjusted accurately, the adjustment time is wasted, affecting the control effect of the discharge accuracy of the UPS power supply. Therefore, each inductance adjustment should be made as accurate as possible.

[0114] In order to achieve this technical purpose, in this embodiment, a verification mechanism is introduced for each adjustment of the inductance to ensure that the output voltage of the discharge branch composed of the battery system and the variable inductor can be adjusted to be close to the output voltage of the charger in the shortest time. .

[0115] In this embodiment, the inductance adjustment method introducing the verification mechanism includes a first adjustment method and a second adjustment method, wherein the first adjustment method is to determine The first inductance adjustment method is to perform the inductance adjustment when the The inductance adjustment method performed when

[0116] The first adjustment method specifically includes the following steps:

[0117] A1, control the battery system to charge the variable inductor with initial inductance to: make the voltage across the variable inductor and The absolute value of the difference is less than the preset first absolute value threshold, the purpose is to make Close to , and make and The absolute value of the difference is less than the preset second difference absolute value threshold, the purpose is to make and Close to ; It represents the output voltage of the battery system when charging the variable inductor with initial inductance begins. is the inductor voltage after adjusting to the steady state with the initial inductance;

[0118] A2, in Monitor the output voltage of the battery system in real time at all times Compared to The previous moment Monitor the output voltage of the battery system in real time at all times Big, and When the first strategy is executed, the calculation is reducing the inductance of the variable inductor by a first proposed reduction amount at a time;

[0119] when ,and When the second strategy is executed, the calculation is reducing the inductance of the variable inductor by a second proposed reduction amount at a time;

[0120] The first strategy for calculating the first proposed reduction amount is expressed as: , express The inductance after adjustment at all times; express The predicted inductance after time adjustment, is a positive value;

[0121] The prediction is obtained through the following steps:

[0122] A21, extract history The output voltage of the battery system at the moment Compared with the previous The output voltage of the battery system at the moment Big, and , Both greater than of and , and then solve for the difference , and same Inductance at time and Inductance at time The difference Composition data points , and then is the independent variable, Fitting each data point for the dependent variable through a second fitting function;

[0123] A22, will and Substituting the difference into the second fitting function, we get , and then get .

[0124] It should be noted that the second fitting function preferably adopts a quadratic equation or a higher-order equation. In addition, the battery discharge control system under the heterodyne structure design provided in this embodiment has a feedback mechanism. When the input voltage of the UPS power supply fluctuates abnormally, it means that the automatic adjustment of the inductance by the machine is not effective. At this time, an alarm will be issued to prompt manual intervention to adjust the inductance. Therefore, it is ensured that the second fitting function has a better Predictive effect.

[0125] The second strategy for calculating the second proposed reduction amount is expressed as: , express The inductance after adjustment at all times; express The predicted inductance after time adjustment, Is a positive value.

[0126] The difference between the calculation method of the second proposed reduction and the first proposed reduction is:

[0127] In the second strategy, The calculation of depends on the third fitting function. The data points for curve fitting by the third fitting function are different from the types of fitting data points in the first strategy, which are: The output voltage of the battery system at the moment Compared with the previous The output voltage of the battery system at the time Small and , Both greater than of and , and then solve for the difference , and same Inductance at time and Inductance at time The difference Composition data points The third fitting function is also preferably a quadratic equation or a higher-order equation.

[0128] A3, after reducing the inductance of the variable inductor by the first intended reduction amount or the second intended reduction amount, monitor the input voltage fluctuation range of the UPS power supply, and when the fluctuation range exceeds the preset fluctuation threshold range, prompt human intervention to adjust the inductance to control the fluctuation range within the fluctuation threshold range.

[0129] It should be noted here that the input voltage fluctuation range of the UPS power supply is the output voltage of the UPS power supply and the charger. The fluctuation range of the absolute value of the difference.

[0130] The second adjustment method specifically includes the following steps:

[0131] B1, control the battery system to charge the variable inductor with initial inductance to: make the voltage across the variable inductor and The absolute value of the difference is smaller than a preset first absolute value threshold, and and The absolute value of the difference is less than a preset second absolute difference threshold; represents the output voltage of the battery system when charging of the variable inductor having the initial inductance begins;

[0132] B2, in Monitor the output voltage of the battery system in real time at all times Compared to The previous moment Monitor the output voltage of the battery system in real time at all times Big, and When the third strategy is executed, the calculation is momentarily increasing the inductance of the variable inductor by a first simulated increase amount;

[0133] when ,and When the fourth strategy is executed, the calculation is a second quasi-increase amount for increasing the inductance of the variable inductor at all times;

[0134] The calculation principle of the first proposed lifting amount and the second proposed lifting amount is the same as the calculation principle of the first proposed lowering amount expressed in steps A21-A22, except that when calculating the first proposed lifting amount and the second proposed lifting amount, . And the fitting data of the third fitting function used in the third strategy and the fourth fitting function used in the fourth strategy are different. In the third strategy, the fitting data is generated from: The output voltage of the battery system at the moment Compared with the previous The output voltage of the battery system at the moment Big, and , Are less than or equal to of and In the fourth strategy, the fitting data is generated from: The output voltage of the battery system at the moment Compared with the previous The output voltage of the battery system at the moment Small, and , Are less than or equal to of and data.

[0135] B3, after increasing the inductance of the variable inductor by the first proposed increase amount or the second proposed increase amount, monitor the input voltage fluctuation range of the UPS power supply, and when the fluctuation range exceeds the preset fluctuation threshold range, prompt human intervention to adjust the inductance to control the fluctuation range within the fluctuation threshold range. Similarly, the input voltage fluctuation range of the UPS power supply here is the input voltage of the UPS power supply and the output voltage of the charger. The fluctuation range of the absolute value of the difference.

[0136] In summary, under the premise of providing a battery discharge control system under a heterogeneous structure design, this embodiment obtains the initial inductance of the variable inductor required to be configured for the UPS power supply under the current working parameters of the UPS power supply for the battery system working under the current working parameters of the battery system, so that the input voltage of the UPS power supply can be more quickly and accurately controlled to enter the fluctuation threshold range compared with the fluctuation range of the output voltage of the charger. In addition, under the condition of having a control feedback mechanism, four different strategies are used to control and adjust the inductance of the variable inductor, so that the control of the dual charging structure on the discharge of the UPS power supply is more accurate, ensuring that the input voltage of the UPS power supply can always be maintained within the threshold fluctuation range compared with the output voltage of the charger.

[0137] It should be noted that the above specific implementations are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art should understand that various modifications, equivalent substitutions, changes, etc. can be made to the present invention. However, as long as these changes do not deviate from the spirit of the present invention, they should be within the scope of protection of the present invention. In addition, some terms used in the specification and claims of this application are not restrictive, but are only for the convenience of description.

Claims

1. A method for controlling the charging and discharging of a UPS and a battery under a heterodyne structure, characterized in that the steps include: S1, for a battery system operating under current operating parameters of the battery system, obtaining an initial inductance of a variable inductor required to be configured for a UPS power supply operating under current operating parameters of the UPS power supply; S2, real-time monitoring of the output voltage of the battery system , and according to Is it greater than the output voltage of the charger? According to different judgment results, a corresponding discharge strategy for the UPS power supply is executed by adjusting the inductance of the variable inductor after accuracy verification; In step S2, the inductance adjustment method introducing the verification mechanism includes a first adjustment method, wherein the first adjustment method is to determine The inductance adjustment method is performed when the first adjustment method comprises the steps of: A1, controlling the battery system to charge the variable inductor having the initial inductance to: making the voltage across the variable inductor and The absolute value of the difference is smaller than a preset first absolute value threshold, and and The absolute value of the difference is less than a preset second absolute difference threshold; represents the output voltage of the battery system when the variable inductor having the initial inductance starts to be charged; A2, in Monitor the output voltage of the battery system in real time at all times Compared to The previous moment Monitor the output voltage of the battery system in real time at all times Big, and When the first strategy is executed, the calculation is reducing the inductance of the variable inductor by a first proposed reduction amount at a time; when ,and When the second strategy is executed, the calculation is reducing the inductance of the variable inductor by a second proposed reduction amount at a time; A3, after reducing the inductance of the variable inductor by the first intended reduction amount or the second intended reduction amount, monitoring the input voltage fluctuation range of the UPS power supply, and when the fluctuation range exceeds a preset fluctuation threshold range, prompting manual intervention to adjust the inductance to control the fluctuation range to be within the fluctuation threshold range; The charging and discharging interface structure between UPS power supply, charger and battery system is as follows: The positive pole U_BAT+ of the UPS power supply is connected to the positive pole P+ of the battery system, and the positive pole C_P+ of the charger is connected to the positive pole C+ of the battery system; the negative pole U_BAT- of the UPS power supply is connected to the negative pole C_P- of the charger and to the negative pole P- / C- of the battery system.

2. The method for controlling the charging and discharging of a UPS and a battery in a heterogeneous structure according to claim 1, characterized in that: Step S1 specifically includes the following steps: S11, obtaining the output voltage of the charger that forms a dual charging structure with the UPS power supply , and match the output voltage associated with it from the curve library and associating a fitting curve of the battery pack historical parameter range within which the current operating parameters of the battery system fall, the average inductance adjustment amount within which the current operating parameters of the UPS power supply fall, and the UPS required power; S12, obtaining the current required charging power of the UPS power supply as the load, and substituting the power as an independent variable into a first fitting function used to fit the fitting curve, to obtain a y value of the first fitting function; S13, calculating a first influence amount of the current operating parameters of the coupled battery system and the current operating parameters of the UPS power supply on adjusting the inductance of the variable inductor to the y value; S14, obtaining a historical true value corresponding to the y value, and then calculating a second influence amount of the corresponding historical battery system operating parameters and historical UPS power supply operating parameters in the historical secondary discharge control of the battery system on adjusting the inductance of the variable inductor to the historical true value; S15, determining whether a deviation between the first influence amount and the second influence amount having a parameter type corresponding relationship is less than a preset deviation threshold, If yes, the y value obtained in step S12 is used as the initial inductance obtained in step S1; If not, it is determined that the initial inductance acquisition fails, and a prompt is given to manually adjust the initial inductance.

3. The method for controlling the charge and discharge of a UPS and a battery in a heterogeneous structure according to claim 2, characterized in that: The current operating parameters of the battery system include any one or more of the current system battery pack imbalance of the battery system, the first temperature of the current environment, and the first humidity; the current operating parameters of the UPS power supply include any one or more of the current UPS battery pack imbalance of the UPS power supply, the second temperature of the current environment, and the second humidity.

4. The method for controlling the charge and discharge of a UPS and a battery under a heterodyne structure according to claim 2 or 3, characterized in that: When forming each fitting point in the same fitting curve, the second environmental operating condition of the UPS power supply and the unbalance degree of the UPS battery group in the UPS power supply are maintained within the preset corresponding parameter range, and the first environmental operating condition of the battery system and the unbalance degree of the system battery group in the battery system are maintained within the preset corresponding parameter range.

5. The method for controlling the charge and discharge of a UPS and a battery in a heterogeneous structure according to claim 2, characterized in that: The method for calculating the first influence amount comprises the steps of: S131, calculating a parameter value deviation for each first parameter in the current operating parameters of the battery system and a corresponding second parameter in the current operating parameters of the UPS power supply that is of the same type as the first parameter; S132, performing normalization operation on the parameter value deviation associated with each first parameter after dimension processing, to obtain a normalized deviation value associated with a parameter array consisting of the first parameters and the second parameters having a type corresponding relationship; S133: Calculate the product of the y value and the normalized deviation value as the first influence value associated with the parameter array bound to the normalized deviation value.

6. The method for controlling the charge and discharge of a UPS and a battery in a heterogeneous structure according to claim 2, characterized in that: The method for calculating the second influence amount comprises the steps of: S141, calculating the mean value of the parameter value deviation between each first historical parameter of the historical battery system operating parameters monitored at each inductance adjustment moment in the same historical discharge control and the corresponding second historical parameter of the same type as the first historical parameter in the historical UPS power supply operating parameters; S142, performing a normalization operation on the parameter value deviation mean associated with each first historical parameter after dimension processing, so as to obtain a normalized historical deviation value associated with a historical parameter array consisting of the first historical parameter and the second historical parameter having a type corresponding relationship; S143: Calculate the product of the historical true value and the normalized historical deviation value as the second influence value associated with the historical parameter array bound to the normalized historical deviation value.

7. The method for controlling the charge and discharge of a UPS and a battery in a heterodyne structure according to claim 1, characterized in that: In step A2, the first strategy for calculating the first intended reduction amount is expressed as: , express The inductance after adjustment at all times; express The predicted inductance after time adjustment, is a positive value; The prediction is obtained through the following steps: A21, extract history The output voltage of the battery system at the moment Compared with the previous The output voltage of the battery system at the time Big, and , Both greater than of and , and then solve for the difference , and same Inductance at time and Inductance at time The difference Composition data points , and then is the independent variable, Fitting each data point for the dependent variable through a second fitting function; A22, will and Substituting the difference into the second fitting function, we get .

8. The method for controlling the charge and discharge of a UPS and a battery in a heterogeneous structure according to claim 7, characterized in that: The data for fitting using the second fitting function in the second strategy is generated from: The output voltage of the battery system at the moment Compared with the previous The output voltage of the battery system at the time Small, and , Both greater than of and data.

9. The method for controlling the charge and discharge of a UPS and a battery in a heterodyne structure according to claim 1, characterized in that: The positive electrode of the system battery pack in the battery system is connected to the positive electrode of the discharge diode, and the negative electrode of the discharge diode is connected in series with a discharge relay and then connected to the charging and discharging positive electrode of the UPS power supply; the negative electrode of the charging diode is connected to the positive electrode of the discharge diode, and the positive electrode of the charging diode is connected in series with a charging relay and serves as the charging positive electrode of the battery system; the positive electrode of the system battery pack in the battery system is connected to the positive electrode of the discharge diode, and the negative electrode of the system battery pack serves as the charging and discharging negative electrode of the battery system, thereby forming a discharge circuit in which the charger and the battery system discharge to the UPS power supply at the same time.

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