A photovoltaic system battery charging and discharging monitoring system

Abstract

The invention discloses a photovoltaic system battery charge and discharge monitoring system, comprising a battery data acquisition module, a battery charge monitoring module, a charge rate adjustment module and a monitoring information output module. The invention relates to the field of battery charge and discharge monitoring technology, and solves the technical problems that the battery charge cannot be reasonably regulated and controlled, and the service life of the battery cannot be well analyzed. The invention analyzes the battery temperature during the battery charging process, analyzes the battery itself when an abnormal temperature occurs, determines the cause of the abnormality, and solves the problem according to different causes. For the situation where the charge rate needs to be adjusted, the charging rate is appropriately adjusted according to the remaining power and the charging time. On the one hand, the charging demand of the battery can be guaranteed, and on the other hand, the charging rate can be prevented from being too high, resulting in excessive temperature and causing an impact on the battery itself.

Description

Technical Field

[0001] The invention relates to the technical field of battery charge and discharge monitoring, and in particular to a photovoltaic system battery charge and discharge monitoring system. Background Art

[0002] As a chemical energy with reliable performance, batteries have been widely used in industrial fields such as power systems, transportation, and portable electronic products.

[0003] According to the patent application number CN201710761019.1, the patent includes a battery, on which a charge and discharge control module is provided, and the charge and discharge control module includes a charging control circuit, a battery, a discharge control circuit, a charging current detection module, a terminal voltage detection module, a microcontroller module, a discharge current detection module, a human-computer interaction module, and a PWM driver; the present invention analyzes the changes in voltage and current during the operation of the battery and reasonably controls the working process of the battery, thereby ensuring and improving the cycle life of the battery.

[0004] When some existing charge and discharge monitoring systems are in use, they collect data during the charge and discharge process and then analyze it for early warning control. Although they can safely control the charge and discharge process, they cannot monitor the charge and discharge of the battery fundamentally. The battery heating phenomenon that occurs during the battery charging process cannot be solved well, and the internal power storage situation of the battery cannot be systematically analyzed. As a result, the battery usage cannot be systematically analyzed and judged, which will further affect the subsequent use of the battery. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a photovoltaic system battery charge and discharge monitoring system, which solves the problems of being unable to reasonably regulate the charge of the battery and being unable to analyze the service life of the battery well.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A photovoltaic system battery charge and discharge monitoring system, comprising:

[0007] The battery data acquisition module is used to collect basic data of the target object and transmit the target basic data to the battery charging monitoring module and the battery discharging monitoring module respectively, wherein the target object includes: photovoltaic storage battery, and the basic data includes: charging rate, discharging rate, remaining power, total battery volume and battery temperature;

[0008] The battery charging monitoring module is used to obtain the transmitted target object basic data and analyze the target object according to the charging rate, remaining power and total battery volume in the basic data, and generate a corresponding charging signal in combination with the battery temperature, wherein the charging signal includes a charging adjustment signal and a charging abnormality signal, and then transmit the charging adjustment signal to the charging rate adjustment module, and transmit the charging abnormality signal to the battery abnormality monitoring module;

[0009] The charging rate adjustment module is used to obtain the transmitted charging adjustment signal and analyze it, and obtain the charging time Tc. It should be noted that the charging time Tc represents the actual charging time, which is obtained by the time timer, and the overall charging loss factor is calculated in combination with the charging time. Then, the charging rate is adjusted according to the loss factor, and the charging rate adjustment information is generated and transmitted to the monitoring information output module;

[0010] The battery abnormality monitoring module is used to obtain the transmitted battery abnormality signal and analyze it, generate abnormal information by analyzing the voltage and current, wherein the abnormal information includes: voltage abnormality signal and battery abnormality signal, and transmit the abnormal information to the monitoring information output module;

[0011] The battery discharge monitoring module is used to obtain the basic data of the transmitted target object and analyze it, generate the discharge analysis result by calculating the relationship between the discharge time and the actual discharge time, wherein the discharge result includes storing abnormal information and storing normal information, and transmit it to the battery life monitoring module;

[0012] The battery life monitoring module is used to obtain the transmitted discharge analysis results and analyze the storage abnormal information in the discharge analysis results. By analyzing the loss of the target object, the battery life is judged and analyzed and the corresponding life monitoring information is generated, where the life monitoring information includes: maintenance signal and monitoring signal, and the life monitoring information is transmitted to the monitoring information output module.

[0013] As a further solution of the present invention: the specific manner in which the battery charging monitoring module generates a charging signal is as follows:

[0014] S1: Taking the battery temperature W0 as the starting point, the battery temperature is acquired with time t as the period and recorded as Wi, where i represents the number of time periods, i=1, 2, ..., m, and then the battery temperature difference in a single time period is calculated and recorded as Wci, and the battery temperature change rate in a single time period is calculated and recorded as Wsi;

[0015] S2: Next, compare Ws i with the preset value YS1. When Ws i ≥ YS1, the system determines that the temperature change in this cycle is abnormal and generates a temperature abnormality signal. On the contrary, when Ws i < YS1, the system determines that the temperature change in this cycle is normal and generates a temperature normal signal. The preset value YS1 is a preset value, and the value of YS1 is set by the operator himself. Specifically, compare the obtained real-time temperature change rate with the preset temperature change value to determine whether there is an abnormal temperature change during the battery charging process.

[0016] S3: Obtain the remaining power of the target object corresponding to the temperature abnormality signal and record it as Ds. The specific remaining power represents the power stored by the target object at the temperature change time point. Next, compare Ds with the preset value YS2. When Ds ≥ YS2, the system determines that the current charging rate is too high and needs to be adjusted, and generates a charging adjustment signal. On the contrary, when Ds < YS2, the system determines that the battery is abnormal and generates a charging abnormality signal, and records the time point at the same time. The preset value YS2 is a preset value, the specific value of YS2 is set by the operator himself, and YS2 is a percentage value. Specifically, if the remaining power corresponding to the corresponding temperature signal reaches the preset value, it means that continuing to charge at the set charging rate will damage the battery. On the contrary, when the remaining power corresponding to the corresponding temperature signal does not reach the preset value, normally there will be no temperature abnormality, so the system determines that there is a problem with the battery itself.

[0017] As a further solution of the present invention: The specific way for the charging rate adjustment module to generate the charging rate adjustment information is as follows:

[0018] P1: Obtain the current remaining power Ds, charging rate Vc, and charging duration Tc, and substitute Vc and Ds into the formula Calculate to obtain the calculation duration Ts, and then substitute Ts and Tc into the formula Calculate to obtain the loss factor a;

[0019] P2: Then set the adjusted charging rate as Vs, the adjusted charging duration as nTc, and substitute the loss factor a, charging rate Vs, adjusted charging duration Ta, and remaining power Ds into the formula Calculate to obtain the adjusted charging rate Vs and generate the charging rate adjustment information, and Ta = nTc, n > 1. Specifically, the determination of the charging duration Ta can be set by the operator himself, and the value of the charging duration Ta is larger than the value of the charging duration Tc.

[0020] As a further solution of the present invention: The specific way for the battery abnormality monitoring module to generate the abnormality information is as follows:

[0021] A1: Obtain the time period i when the battery abnormal signal is generated, record this time period i as the abnormal period y, and at the same time obtain the voltage of the target object within the abnormal period and record it as Dy. Then obtain the voltage of the target object within different time periods i and record it as Di;

[0022] A2: Calculate the average voltage of the target object within different time periods i and record it as Dp, and compare the voltage Dy of the target object within the abnormal period with Dp. The specific comparison method is as follows: When Dy > Dp or when Dy < Dp, the system determines that the voltage within the abnormal period has changed, resulting in abnormal temperature of the target object, and generates a voltage abnormal signal. On the contrary, when Dy = Dp, the system determines that the voltage is normal and determines that the target object itself is abnormal, and generates a storage battery abnormal signal.

[0023] As a further solution of the present invention: The specific way for the battery discharge monitoring module to generate a discharge analysis result is as follows:

[0024] Obtain the discharge rate and record it as Fc, and obtain the total battery capacity and record it as Dz. Then substitute the two into the formula to obtain the calculated discharge time T1. At the same time, obtain the actual working time T2, and compare and judge the two. When T1 ≥ T2, the system determines that the storage loss of the target object is large and generates a storage abnormal information. On the contrary, when T1 < T2, the system determines that the storage loss of the target object is normal and generates a storage normal information.

[0025] As a further solution of the present invention: The specific way for the battery life monitoring module to generate life monitoring information is as follows:

[0026] A1: Substitute the actual working duration T2 and the discharge rate Fc into the formula DC = T2 × Fc to calculate the actual stored power DC, and combine with the total battery capacity Dz to calculate the storage loss value |Dz - DC|. Then obtain the usage duration of the target object and record it as ST;

[0027] A2: Obtain the storage loss values CS within different time periods t, then calculate the storage loss factors within different time periods t and calculate the average value and record it as b. Then substitute it into the formula R = Dz - (ST × b) to calculate the normal loss value R;

[0028] A3: Compare the calculated normal loss value R with the storage loss value |Dz - DC|. When |Dz - DC| ≥ R, the system determines that the storage loss value of the current battery exceeds the normal loss value and generates an overhaul signal. On the contrary, when |Dz - DC| < R, the system determines that the storage loss value of the current battery does not exceed the normal loss value and generates a monitoring signal.

[0029] Beneficial effects

[0030] The present invention provides a photovoltaic system battery charge and discharge monitoring system. Compared with the prior art, it has the following beneficial effects:

[0031] The present invention analyzes the battery temperature during the battery charging process, analyzes the battery itself when abnormal temperature occurs, determines the cause of the abnormality, and solves it according to different causes. In the case where the charging rate needs to be adjusted, the charging rate is appropriately adjusted according to the remaining power and the charging time. On the one hand, it can ensure the charging demand of the battery, and on the other hand, it can avoid the charging rate being too high, which causes the temperature to be too high and affects the battery itself.

[0032] The present invention monitors the battery discharge process, calculates the battery usage according to the storage loss value, generates corresponding signals according to the usage, and analyzes the battery usage to remind operators to perform reasonable maintenance work to avoid the danger of working in abnormal battery conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a system block diagram of the present invention;

[0034] Figure 2 Figure 2 is a diagram of the method of the present invention. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] For example, see Figure 1 and Figure 2 The present application provides a photovoltaic system battery charging and discharging monitoring system, comprising:

[0037] The battery data acquisition module is used to collect the basic data of the target object and transmit the target basic data to the battery charging monitoring module and the battery discharging monitoring module respectively. The target object includes: photovoltaic batteries, and the basic data includes: charging rate, discharging rate, remaining power, total battery volume and battery temperature. The specific battery temperature is directly obtained through the set temperature sensor, and the obtained battery temperature is the real-time temperature, and the charging rate is set by the operator and can be adjusted by the operator.

[0038] The battery charging monitoring module is used to obtain the basic data of the target object transmitted and analyze the target object according to the charging rate, remaining power and total battery capacity in the basic data, and generate corresponding charging signals in combination with the battery temperature. The charging signals include a charging adjustment signal and a charging anomaly signal. Then, the charging adjustment signal is transmitted to the charging rate adjustment module, and the charging anomaly signal is transmitted to the battery anomaly monitoring module. The specific method for generating the charging signals is as follows:

[0039] S1: Starting from the battery temperature W0, the battery temperature is obtained at the same time with a time period t and denoted as Wi, where i represents the number of time periods, i = 1, 2,..., m. Then, the battery temperature difference in a single time period is calculated and denoted as Wci, and the battery temperature change rate in a single time period is calculated and denoted as Ws i;

[0040] S2: Then, Ws i is compared with the preset value YS1. When Ws i ≥ YS1, the system determines that the temperature change in this period is abnormal and generates a temperature anomaly signal. On the contrary, when Ws i < YS1, the system determines that the temperature change in this period is normal and generates a temperature normal signal. The preset value YS1 is a preset value, and the value of YS1 is set by the operator himself. Specifically, by comparing the obtained real-time temperature change rate with the preset temperature change value, it is judged whether there is an abnormal temperature change during the battery charging process.

[0041] S3: The remaining power of the target object corresponding to the temperature anomaly signal is obtained and denoted as Ds. The specific remaining power represents the power stored by the target object at the temperature change time point. Then, Ds is compared with the preset value YS2. When Ds ≥ YS2, the system determines that the current charging rate is too high and needs to be adjusted and generates a charging adjustment signal. On the contrary, when Ds < YS2, the system determines that there is an anomaly in the battery and generates a charging anomaly signal, and the time point is recorded at the same time. The preset value YS2 is a preset value, and the specific value of YS2 is set by the operator himself, and YS2 is a percentage value. Specifically, if the remaining power corresponding to the corresponding temperature signal reaches the preset value, it means that continuing to charge at the set charging rate will damage the battery. On the contrary, when the remaining power corresponding to the corresponding temperature signal does not reach the preset value, normally there will be no temperature anomaly, so the system determines that there is a problem with the battery itself.

[0042] The charging rate adjustment module is used to obtain the transmitted charging adjustment signal and analyze it, and obtain the charging time as Tc. It should be noted that the charging time Tc represents the actual charging time, which is obtained by the time timer, and the overall charging loss factor is calculated in combination with the charging time. Then, the charging rate is adjusted according to the loss factor and the charging rate adjustment information is generated and transmitted to the monitoring information output module. The specific method of generating the charging rate adjustment information is as follows:

[0043] P1: Get the current remaining power Ds, charging rate Vc and charging time Tc, and substitute Vc and Ds into the formula Calculate the calculation time Ts, then substitute Ts and Tc into the formula The loss factor a is calculated;

[0044] P2: Then set the adjusted charging rate to Vs, the adjusted charging time to nTc, and substitute the loss factor a, charging rate Vs, adjusted charging time Ta, and remaining power Ds into the formula The adjusted charging rate Vs is calculated and the charging rate adjustment information is generated, and Ta=nTc, n>1. Specifically, the charging time Ta can be set by the operator, and the value of the charging time Ta is greater than the value of the charging time Tc.

[0045] Combined with the actual application scenario analysis, as the battery usage time increases, its own loss will also increase. Therefore, there must be a difference between the calculated charging time and the actual charging time. This difference is the loss. The loss factor is then calculated based on the loss. Finally, the adjusted charging rate is calculated based on the loss factor, and the adjusted charging rate is less than the adjusted charging rate.

[0046] The monitoring information output module is used to obtain the transmitted charging rate adjustment information and display it to the operator through a display device.

[0047] Embodiment 2, as Embodiment 2 of the present invention, differs from Embodiment 1 in that the battery charging monitoring module transmits the generated battery abnormality signal to the battery abnormality monitoring module, and analyzes and monitors the signal.

[0048] The battery abnormality monitoring module is used to obtain the transmitted battery abnormality signal and analyze it, and generate abnormal information by analyzing the voltage and current, wherein the abnormal information includes: voltage abnormality signal and battery abnormality signal, and transmit the abnormal information to the monitoring information output module, and the specific method of generating the abnormal information is as follows:

[0049] A1: Obtain the time period i when the battery abnormal signal is generated, record this time period i as the abnormal period y, and at the same time obtain the voltage of the target object within the abnormal period and record it as Dy. Then obtain the voltage of the target object within different time periods i and record it as Di;

[0050] A2: Calculate the average voltage of the target object within different time periods i and record it as Dp, and compare the voltage Dy of the target object within the abnormal period with Dp. The specific comparison method is as follows: when Dy > Dp or when Dy < Dp, the system determines that the voltage within the abnormal period has changed, resulting in abnormal temperature of the target object, and generates a voltage abnormal signal. On the contrary, when Dy = Dp, the system determines that the voltage is normal and determines that the target object itself is abnormal, and generates a storage battery abnormal signal.

[0051] Specifically, the analysis method of current is the same as that of voltage, and no more details will be elaborated here. Under normal circumstances, when the battery is charging, the voltage is stable and will not cause the temperature of the battery to change. However, when the voltage is unstable and fluctuates, there will be different losses in the work done by the voltage, so it will cause temperature changes.

[0052] The monitoring information output module is used to obtain the transmitted abnormal information and display it to the operator through a display device.

[0053] Embodiment 3. As Embodiment 3 of the present invention, the difference from Embodiment 1 and Embodiment 2 is that the battery data acquisition module transmits the basic data of the target object to the battery discharge monitoring module.

[0054] The battery discharge monitoring module is used to obtain the transmitted basic data of the target object and analyze it, generate a discharge analysis result by calculating the relationship between the discharge duration and the actual discharge duration. The discharge result includes storage abnormal information and storage normal information, and transmits it to the battery life monitoring module. The specific method for generating the discharge analysis result is as follows:

[0055] Obtain the discharge rate and record it as Fc, and obtain the total battery capacity and record it as Dz. Then substitute the two into the formula to obtain the calculated discharge time T1. At the same time, obtain the actual working time T2 and compare the two. When T1 ≥ T2, the system determines that the storage loss of the target object is large and generates storage abnormal information. On the contrary, when T1 < T2, the system determines that the storage loss of the target object is normal and generates storage normal information; specifically, by comparing the actual working time T2 with the calculated discharge time T1 to determine whether the storage capacity of the target object is the real situation. With the long-term use of the storage battery, although the surface shows that the battery power is full, there is actually some virtual electricity, which is likely to give users an illusion.

[0056] The battery life monitoring module is used to obtain the transmitted discharge analysis results, analyze the storage abnormal information in the discharge analysis results, judge and analyze the service life of the battery by analyzing the loss amount of the target object, and generate corresponding life monitoring information. The life monitoring information includes: maintenance signal and monitoring signal. At the same time, the life monitoring information is transmitted to the monitoring information output module, and the specific method for generating the life monitoring information is as follows:

[0057] A1: Substitute the actual working duration T2 and the discharge rate Fc into the formula DC = T2 × Fc to calculate the actual stored power DC, and combine it with the total battery capacity Dz to calculate the storage loss value |Dz - DC|. Then, obtain the usage duration of the target object and record it as ST;

[0058] A2: Obtain the storage loss values CS within different time periods t, then calculate the storage loss factors within different time periods t and calculate the average value and record it as b. Then, substitute it into the formula R = Dz - (ST × b) to calculate the normal loss value R;

[0059] A3: Compare the calculated normal loss value R with the storage loss value |Dz - DC|. When |Dz - DC| ≥ R, the system determines that the storage loss value of the current battery exceeds the normal loss value and generates a maintenance signal. On the contrary, when |Dz - DC| < R, the system determines that the storage loss value of the current battery does not exceed the normal loss value and generates a monitoring signal. Specifically, in the normal case, the battery will gradually age over time, so the internal power storage situation will also gradually decline, which does not include the situation of human damage. If there is human damage, the decline in the battery storage situation will also increase. By comparing the relationship between the current storage loss value and the storage loss value in the normal situation, it is judged whether the target object is in normal aging and whether it can continue to be used.

[0060] The monitoring information output module is used to obtain the transmitted life monitoring information and display it to the operator through a display device.

[0061] Embodiment 4, as Embodiment 4 of the present invention, focuses on combining the implementation processes of Embodiment 1, Embodiment 2, and Embodiment 3.

[0062] Some data in the above formulas are all numerically calculated by removing their dimensions, and the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0063] The above embodiments are only used to illustrate the technical method of the present invention and not to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical method of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A photovoltaic system battery charging and discharging monitoring system, characterized in that: Including: A battery data acquisition module, which is used to acquire the basic data of the target object and transmit the target basic data to the battery charging monitoring module and the battery discharging monitoring module respectively. The basic data includes: charging rate, discharging rate, remaining power, total battery capacity, and battery temperature; A battery charging monitoring module, which is used to obtain the transmitted basic data of the target object and analyze the target object according to the charging rate, remaining power, and total battery capacity, and generate corresponding charging signals in combination with the battery temperature. The charging signals include a charging adjustment signal and a charging anomaly signal. Then, the charging adjustment signal is transmitted to the charging rate adjustment module, and the charging anomaly signal is transmitted to the battery anomaly monitoring module; A charging rate adjustment module, which is used to obtain the transmitted charging adjustment signal and analyze it. At the same time, the charging duration is obtained and denoted as Tc, and the overall charging loss factor is calculated in combination with the charging duration. Then, the charging rate is adjusted according to the loss factor and the charging rate adjustment information is generated, and it is transmitted to the monitoring information output module; A battery anomaly monitoring module, which is used to obtain the transmitted battery anomaly signal and analyze it, and generate anomaly information by analyzing the voltage and current. The anomaly information includes: a voltage anomaly signal and a storage battery anomaly signal, and the anomaly information is transmitted to the monitoring information output module; A battery discharging monitoring module, which is used to obtain the transmitted basic data of the target object and analyze it, and generate a discharging analysis result by calculating the relationship between the discharging duration and the actual discharging duration. The discharging result includes storage anomaly information and storage normal information, and it is transmitted to the battery life monitoring module; A battery life monitoring module, which is used to obtain the transmitted discharging analysis result and analyze the storage anomaly information in the discharging analysis result, and judge and analyze the service life of the battery by analyzing the loss amount of the target object and generate corresponding life monitoring information. The life monitoring information includes: an overhaul signal and a monitoring signal, and at the same time, the life monitoring information is transmitted to the monitoring information output module.

2. A photovoltaic system battery charge and discharge monitoring system according to claim 1, characterized in that: The specific method for the battery charging monitoring module to generate charging signals is as follows: S1: Starting from the battery temperature W0, the battery temperature is obtained at the same time with the time t as the period and denoted as Wi, and i represents the number of time periods, i = 1, 2,..., m. Then, the battery temperature difference in a single time period is calculated and denoted as Wci, and the battery temperature change rate in a single time period is calculated and denoted as Wsi; S2: Then, Wsi is compared with the preset value YS1. When Wsi ≥ YS1, the system determines that the temperature change in this period is abnormal and generates a temperature anomaly signal. On the contrary, when Wsi < YS1, the system determines that the temperature change in this period is normal and generates a temperature normal signal, and the preset value YS1 is a preset value; S3: Obtain the remaining power of the target object corresponding to the temperature anomaly signal, denoted as Ds. Then compare Ds with the preset value YS2. When Ds ≥ YS2, the system determines that the current charging rate is too high and needs to be adjusted, and generates a charging adjustment signal. On the contrary, when Ds < YS2, the system determines that there is an anomaly in the battery, generates a charging anomaly signal, records the time point at the same time, and the preset value YS2 is a preset value.

3. A photovoltaic system battery charge and discharge monitoring system according to claim 1, characterized in that: The specific method for the charging rate adjustment module to generate charging rate adjustment information is as follows: P1: Get the current remaining power Ds, charging rate Vc and charging time Tc, and substitute Vc and Ds into the formula Calculate the calculation time Ts, then substitute Ts and Tc into the formula The loss factor a is calculated; P2: Then set the adjusted charging rate to Vs, the adjusted charging time to nTc, and substitute the loss factor a, charging rate Vs, adjusted charging time Ta, and remaining power Ds into the formula The adjusted charging rate Vs is calculated and the charging rate adjustment information is generated, and Ta=nTc, n>

1.

4. A photovoltaic system battery charge and discharge monitoring system according to claim 1, characterized in that: The specific method for the battery anomaly monitoring module to generate anomaly information is as follows: A1: Obtain the time period i when the battery anomaly signal is generated, and denote this time period i as the anomaly period y. At the same time, obtain the voltage of the target object within the anomaly period, denoted as Dy. Then obtain the voltages of the target object within different time periods i, denoted as Di; A2: Calculate the average voltage of the target object within different time periods i, denoted as Dp. Compare the voltage Dy of the target object within the anomaly period with Dp. The specific comparison method is as follows: When Dy > Dp or when Dy < Dp, the system determines that the voltage within the anomaly period has changed, resulting in an abnormal temperature of the target object, and generates a voltage anomaly signal. On the contrary, when Dy = Dp, the system determines that the voltage is normal and determines that the target object itself is abnormal, and generates a storage battery anomaly signal.

5. A photovoltaic system battery charge and discharge monitoring system according to claim 1, characterized in that: The specific method for the battery discharge monitoring module to generate a discharge analysis result is as follows: The discharge rate is obtained and denoted as Fc, and the total battery capacity is obtained and denoted as Dz. Then, the two are substituted into the formula to obtain the calculated discharge time T1. At the same time, the actual working time T2 is obtained, and the two are compared and judged. When T1 ≥ T2, the system determines that the storage loss of the target object is large and generates a storage exception message. On the contrary, when T1 < T2, the system determines that the storage loss of the target object is normal and generates a storage normal message.

6. A photovoltaic system battery charge and discharge monitoring system according to claim 1, characterized in that: The specific method for the battery life monitoring module to generate life monitoring information is as follows: A1: Substitute the actual working duration T2 and the discharge rate Fc into the formula DC = T2 × Fc to calculate the actual stored power DC, and combine it with the battery total amount Dz to calculate the storage loss value |Dz - DC|. Then obtain the usage duration of the target object, denoted as ST; A2: Obtain the storage loss values CS within different time periods t. Then calculate the storage loss factors within different time periods t and calculate the average value, denoted as b. Then substitute it into the formula R = Dz - (ST × b) to calculate the normal loss value R; A3: Compare the calculated normal loss value R with the storage loss value |Dz - DC|. When |Dz - DC| ≥ R, the system determines that the storage loss value of the current battery exceeds the normal loss value and generates an inspection signal. On the contrary, when |Dz - DC| < R, the system determines that the storage loss value of the current battery does not exceed the normal loss value and generates a monitoring signal.

7. A photovoltaic system battery charge and discharge monitoring system according to claim 1, characterized in that: The monitoring information output module is used to obtain the transmitted charging rate adjustment information, anomaly information, and life monitoring information, and display them to the operator through a display device.

8. A photovoltaic system battery charge and discharge monitoring system according to claim 1, characterized in that: The battery data acquisition module, the battery discharge monitoring module, and the battery charging monitoring module are connected in a one-way electrical connection, and the battery charging monitoring module is connected in a one-way electrical connection with the battery anomaly monitoring module and the charging rate adjustment module.

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