2000 W photovoltaic intelligent MPPT power supply control method and system

Abstract

The invention discloses a 2000W photovoltaic intelligent MPPT (maximum power point tracking) power supply control method and a 2000W photovoltaic intelligent MPPT power supply control system, which are used for an energy storage battery. Detecting whether the photovoltaic input voltage is within a preset voltage range; if the photovoltaic input voltage is in the preset voltage range, performing forward disturbance or reverse disturbance processing on the photovoltaic input voltage by adopting an MPPT algorithm to obtain a photovoltaic output voltage corresponding to the photovoltaic maximum output power; the energy storage battery is charged according to the photovoltaic output voltage, and the photovoltaic output voltage is the photovoltaic output voltage corresponding to the photovoltaic maximum output power. The photovoltaic input voltage is processed through the MPPT algorithm to obtain the photovoltaic output voltage corresponding to the photovoltaic maximum output power, and then the photovoltaic output voltage corresponding to the photovoltaic maximum output power is used for charging the energy storage battery, so that the charging efficiency of the energy storage battery is improved, and the maximum efficiency of photovoltaic power generation is fully exerted.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic energy storage, and particularly to a power control method and system for a 2000W photovoltaic intelligent MPPT. Background Art

[0002] The development and application of new energy have become an inevitable trend in the world today. Solar energy is a very potential new energy, and photovoltaic power generation is one of the main ways to utilize solar energy currently. Photovoltaic power generation is of great significance for alleviating the energy crisis and reducing environmental pollution, and has broad application prospects.

[0003] However, photovoltaic power generation is affected by the sunlight intensity (or radiation intensity) and the ambient temperature. The output voltage of photovoltaic power generation is unstable, resulting in unstable output power of photovoltaic power generation, sometimes large and sometimes small. At this time, when using photovoltaic power generation to charge a storage battery, due to the unstable output power of photovoltaic power generation, the power received by the storage battery during charging is also unstable, resulting in low charging efficiency of the storage battery and the problem that the maximum efficiency of photovoltaic power generation cannot be exerted.

[0004] Therefore, there is still an urgent need for a power control method that can improve the charging efficiency of the storage battery and fully exert the maximum efficiency of photovoltaic power generation. Summary of the Invention

[0005] The main object of the present invention is to propose a power control method and system for a 2000W photovoltaic intelligent MPPT, aiming to improve the charging efficiency of the storage battery and fully exert the maximum efficiency of photovoltaic power generation.

[0006] To achieve the above object, the present invention proposes a power control method for a 2000W photovoltaic intelligent MPPT for a storage battery, and the power control method for the 2000W photovoltaic intelligent MPPT includes: Obtain the photovoltaic input voltage of the photovoltaic; Detect whether the photovoltaic input voltage is within a preset voltage range; If the photovoltaic input voltage is within the preset voltage range, perform positive perturbation or negative perturbation processing on the photovoltaic input voltage by using the MPPT algorithm to obtain the photovoltaic output voltage corresponding to the maximum photovoltaic output power; Charge the storage battery according to the photovoltaic output voltage, where the photovoltaic output voltage is the photovoltaic output voltage corresponding to the maximum photovoltaic output power.

[0007] In some embodiments, the performing positive perturbation or negative perturbation processing on the photovoltaic input voltage by using the MPPT algorithm to obtain the photovoltaic output voltage corresponding to the maximum photovoltaic output power includes: Determine a first input voltage according to the photovoltaic input voltage, and determine a first input power according to the first input voltage; Perform a positive perturbation process on the first input voltage to obtain a second input voltage, and determine a second input power according to the second input voltage; Compare the magnitude relationship between the first input power and the second input power; If the first input power is less than the second input power, update the value of the first input voltage to the value of the second input voltage, and execute the step of determining the first input power according to the first input voltage; Determine the number of times of the positive perturbation process. If the number of times of the positive perturbation process is equal to a first preset number, determine the second input voltage as the photovoltaic output voltage corresponding to the maximum photovoltaic output power.

[0008] In some embodiments, after comparing the magnitude relationship between the first input power and the second input power, it further includes: If the first input power is greater than the second input power, perform a negative perturbation process on the first input voltage to obtain a third input voltage, and determine a third input power according to the third input voltage; Compare the magnitude relationship between the first input power and the third input power; If the first input power is less than the third input power, update the value of the first input voltage to the value of the third input voltage, determine the first input power according to the first input voltage, and execute the step of performing a negative perturbation process on the first input voltage to obtain a third input voltage and determining a third input power according to the third input voltage; Determine the number of times of the negative perturbation process. If the number of times of the negative perturbation process is equal to a second preset number, determine the third input voltage as the photovoltaic output voltage corresponding to the maximum photovoltaic output power.

[0009] In some embodiments, the step of performing a positive perturbation or a negative perturbation process on the photovoltaic input voltage by using the MPPT algorithm to obtain the photovoltaic output voltage corresponding to the maximum photovoltaic output power includes: Continuously obtain a working instruction for the perturbation process; After obtaining the working instruction for the perturbation process, execute the step of performing a positive perturbation or a negative perturbation process on the photovoltaic input voltage by using the MPPT algorithm to obtain the photovoltaic output voltage corresponding to the maximum photovoltaic output power.

[0010] In some embodiments, the step of charging the energy storage battery according to the photovoltaic output voltage includes: Detect whether the photovoltaic output voltage is the optimal charging voltage of the energy storage battery; If the photovoltaic output voltage is the optimal charging voltage, charge the energy storage battery according to the photovoltaic output voltage; If the photovoltaic output voltage is not the optimal charging voltage, adjust the photovoltaic output voltage so that the photovoltaic output voltage is adjusted to the optimal charging voltage.

[0011] In some embodiments, the adjusting of the photovoltaic output voltage includes: Determine whether the photovoltaic output voltage is greater than the optimal charging voltage; If the photovoltaic output voltage is greater than the optimal charging voltage, perform a step-down process on the photovoltaic output voltage; If the photovoltaic output voltage is less than the optimal charging voltage, perform a step-up process on the photovoltaic output voltage.

[0012] In some embodiments, after the photovoltaic output voltage is the optimal charging voltage, it further includes: Determine the photovoltaic output current according to the photovoltaic output voltage; Detect that the photovoltaic output current is a constant current; If the photovoltaic output current is a constant current, charge the energy storage battery according to the photovoltaic output voltage and the photovoltaic output current.

[0013] In some embodiments, the power control method of the 2000W photovoltaic intelligent MPPT further includes: Obtain the battery voltage of the energy storage battery; Determine whether the battery voltage is equal to a preset voltage; If the battery voltage is equal to the preset voltage, stop charging the energy storage battery.

[0014] In some embodiments, the power control method of the 2000W photovoltaic intelligent MPPT further includes: Obtain the current flow direction of the energy storage battery; Determine the current flow direction, where the current flow direction includes current flowing into the energy storage battery and current flowing out of the energy storage battery; If the current flow direction is current flowing into the energy storage battery, activate the charging current sampling function; If the current flow direction is current flowing out of the energy storage battery, activate the discharging current sampling function.

[0015] The present invention also provides a power control system for a 2000W photovoltaic intelligent MPPT, where the power control system for the 2000W photovoltaic intelligent MPPT includes a 2000W photovoltaic and a storage battery. The storage battery includes a main control module, and the main control module is configured with an MPPT algorithm. The main control module can execute the power control method for the 2000W photovoltaic intelligent MPPT described in any one of the above.

[0016] The present invention processes the photovoltaic input voltage through the MPPT algorithm to obtain the photovoltaic output voltage corresponding to the maximum photovoltaic output power, and then uses the photovoltaic output voltage corresponding to the maximum photovoltaic output power to charge the storage battery; through the MPPT algorithm, the photovoltaic input voltage generated during photovoltaic power generation will be output at the photovoltaic output voltage corresponding to the maximum photovoltaic output power and charge the storage battery; thereby improving the charging efficiency of the storage battery and giving full play to the maximum efficiency of photovoltaic power generation. Description of the Drawings

[0017] Figure 1 It is a schematic flow chart of the power control method for the 2000W photovoltaic intelligent MPPT in the embodiment of the present invention; Figure 2 It is another schematic flow chart of the power control method for the 2000W photovoltaic intelligent MPPT in the embodiment of the present invention; Figure 3 It is another schematic flow chart of the power control method for the 2000W photovoltaic intelligent MPPT in the embodiment of the present invention; Figure 4 It is another schematic flow chart of the power control method for the 2000W photovoltaic intelligent MPPT in the embodiment of the present invention; Figure 5 It is another schematic flow chart of the power control method for the 2000W photovoltaic intelligent MPPT in the embodiment of the present invention; Figure 6 It is another schematic flow chart of the power control method for the 2000W photovoltaic intelligent MPPT in the embodiment of the present invention; Figure 7 It is another schematic flow chart of the power control method for the 2000W photovoltaic intelligent MPPT in the embodiment of the present invention; Figure 8 It is another schematic flow chart of the power control method for the 2000W photovoltaic intelligent MPPT in the embodiment of the present invention; Figure 9 It is a schematic structural diagram of the power control system for the 2000W photovoltaic intelligent MPPT involved in the embodiment of the present invention; Figure 10 It is a schematic structural diagram of the power control device for the 2000W photovoltaic intelligent MPPT involved in the embodiment of the present invention.

[0018] The realization, functional features and advantages of the present invention will be further described in conjunction with embodiments with reference to the accompanying drawings. Specific embodiments

[0019] Next, the solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

[0020] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0021] It should also be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0022] In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0023] To achieve the above object, the present invention proposes a power control method for a 2000W photovoltaic intelligent MPPT for a storage battery. The power control method for the 2000W photovoltaic intelligent MPPT includes: Step S110, obtaining the photovoltaic input voltage of the photovoltaic; Step S120, detecting whether the photovoltaic input voltage is within a preset voltage range; Step S130, if the photovoltaic input voltage is within the preset voltage range, then perform forward perturbation or reverse perturbation processing on the photovoltaic input voltage using the MPPT algorithm to obtain the photovoltaic output voltage corresponding to the maximum photovoltaic output power; Step S140: Charge the energy storage battery according to the photovoltaic output voltage, where the photovoltaic output voltage is the photovoltaic output voltage corresponding to the maximum photovoltaic output power.

[0024] In this embodiment, with reference to Figure 1 and Figure 9 , the power control method of the 2000W photovoltaic intelligent MPPT is applied to the main control module of the energy storage battery in the power control system of the 2000W photovoltaic intelligent MPPT. The power control system of the 2000W photovoltaic intelligent MPPT includes a 2000W photovoltaic and an energy storage battery. Among them, the 2000W photovoltaic refers to a photovoltaic with a rated power of 2000 watts, that is, under standard lighting conditions (for example: solar irradiance is 1000W / ㎡, temperature is 25℃, etc.), the 2000W photovoltaic can generate 2000 watts (i.e., 2 degrees) of electric energy per hour. The energy storage battery can be used to store the electric energy generated by the 2000W photovoltaic and can also be used as a power source to release electric energy. A main control module is provided in the energy storage battery, and the main control module can execute the power control method of the 2000W photovoltaic intelligent MPPT. The main control module is configured with an MPPT (Maximum Power Point Tracking) algorithm. The main control module makes the photovoltaic input voltage generated during photovoltaic power generation be output at the photovoltaic output voltage corresponding to the maximum photovoltaic output power through the MPPT algorithm and charges the energy storage battery; thereby improving the charging efficiency of the energy storage battery and giving full play to the maximum efficiency of photovoltaic power generation. In this embodiment, the execution subject of the method steps is the main control module.

[0025] It can be understood that the photovoltaics in the embodiments are all 2000W photovoltaics. The photovoltaic is connected to the energy storage battery, and the electric energy generated during photovoltaic power generation can be transmitted to the energy storage battery for storage. Among them, the power of the electricity generated by photovoltaic power generation will change with external conditions such as light intensity and ambient temperature, and there is an operating point that can make the power reach the maximum value, that is, the maximum power point. The function of the MPPT algorithm is to monitor the output of the electricity generated by the photovoltaic in real time and adjust the circuit parameters to make the power of the electricity generated by the photovoltaic always be near the maximum power point, thereby improving the charging efficiency of the energy storage battery and giving full play to the maximum efficiency of photovoltaic power generation.

[0026] When the photovoltaic generates electricity, the photovoltaic can generate electricity and then transmit the electricity to the energy storage battery. At this time, the energy storage battery can receive the electricity input by the photovoltaic. When the energy storage battery receives the electricity input by the photovoltaic, the main control module in the energy storage battery can obtain the photovoltaic input voltage according to the electricity input by the photovoltaic. Among them, a voltage detector can be provided in the energy storage battery. The voltage detector can detect the voltage corresponding to the electricity input by the photovoltaic to obtain the photovoltaic input voltage. At this time, the main control module can obtain the photovoltaic input voltage from the voltage detector.

[0027] After the main control module obtains the photovoltaic input voltage, it will also detect the photovoltaic input voltage. It detects whether the photovoltaic input voltage is within a preset voltage range. Among them, the energy storage battery can include multiple single cells, and the multiple single cells are used to store the electric energy generated by the photovoltaic. After the energy storage battery receives the electricity input by the photovoltaic, the main control module will not directly transmit the electricity input by the photovoltaic to the multiple single cells. The main control module will first detect whether the photovoltaic input voltage is within the preset voltage range, where the preset voltage range can be greater than 12V (volt) and less than 162V.

[0028] If the photovoltaic input voltage is not within the preset voltage range, that is, when the photovoltaic input voltage is less than 12V or greater than 162V, the main control module can control the energy storage battery to enter the standby state and does not use the electricity input by the photovoltaic to charge the energy storage battery (the multiple single cells of the energy storage battery). For example: when the photovoltaic input voltage is less than 12V, it can be considered that the charging voltage is too small, and the charging voltage may not reach the minimum voltage threshold for charging the energy storage battery. The chemical reaction inside the single cell of the energy storage battery cannot be effectively started, or can only proceed to a very weak extent, thus unable to achieve normal charging; moreover, if the single cell of the energy storage battery is in this under-voltage charging state for a long time, it may also cause the capacity of the single cell of the energy storage battery to gradually decrease and shorten the service life of the energy storage battery. When the photovoltaic input voltage is greater than 162V, it can be considered that the charging voltage is too large. When the charging voltage is too large, more heat will be generated in the single cell of the energy storage battery during charging; overheating of the single cell will accelerate the decomposition and aging of the chemical substances inside the single cell, reduce the performance and life of the energy storage battery, and may even cause safety problems.

[0029] If the photovoltaic input voltage is within the preset voltage range, that is, when the photovoltaic input voltage is greater than 12V and less than 162V, the main control module can determine that the current photovoltaic input voltage meets the voltage requirements for charging the energy storage battery. Since the power of the electricity generated by photovoltaic power generation will change with external conditions such as light intensity and ambient temperature, the photovoltaic input voltage may be unstable. That is to say, even if the photovoltaic input voltage is within the preset voltage range, the photovoltaic input voltage may still be unstable. Therefore, the main control module will not directly charge the energy storage battery when the photovoltaic input voltage is within the preset voltage range. Instead, it first uses the MPPT algorithm to perform forward or reverse perturbation processing on the photovoltaic input voltage to obtain the photovoltaic output voltage corresponding to the maximum photovoltaic output power. Since the maximum photovoltaic output power is fixed, the photovoltaic output voltage corresponding to the maximum photovoltaic output power is also fixed. In this way, by using the MPPT algorithm to perform forward or reverse perturbation processing on the photovoltaic input voltage, a relatively stable photovoltaic output voltage corresponding to the maximum photovoltaic output power can be obtained.

[0030] After the main control module processes the photovoltaic input voltage by positive or negative perturbation using the MPPT algorithm and obtains the photovoltaic output voltage corresponding to the maximum photovoltaic output power, the main control module will charge the energy storage battery according to the photovoltaic output voltage. That is, the main control module will first process the electricity input from the photovoltaic, that is, process the electricity input from the photovoltaic into electricity with a relatively stable voltage and the voltage corresponding to the maximum output power. At this time, the main control module will charge the processed electricity from the photovoltaic input to the energy storage battery (multiple single cells of the energy storage battery).

[0031] Among them, processing the photovoltaic input voltage by positive or negative perturbation using the MPPT algorithm can be processing the photovoltaic input voltage by positive perturbation using the MPPT algorithm, or processing the photovoltaic input voltage by negative perturbation using the MPPT algorithm. Among them, the MPPT algorithm can be the perturbation observation algorithm. The perturbation observation algorithm is to periodically perturb the voltage of the electricity generated by the photovoltaic (positively or negatively), and then compare the power change before and after the perturbation processing to determine the subsequent perturbation direction, so that the power of the electricity generated by the photovoltaic gradually approaches the maximum power point.

[0032] In this embodiment, the photovoltaic input voltage is processed by the MPPT algorithm to obtain the photovoltaic output voltage corresponding to the maximum photovoltaic output power, and then the photovoltaic output voltage corresponding to the maximum photovoltaic output power is used to charge the energy storage battery; through the MPPT algorithm, the photovoltaic input voltage generated during photovoltaic power generation will be output at the photovoltaic output voltage corresponding to the maximum photovoltaic output power and charge the energy storage battery; thereby improving the charging efficiency of the energy storage battery and giving full play to the maximum efficiency of photovoltaic power generation.

[0033] In some embodiments, the foregoing processing of the photovoltaic input voltage by positive or negative perturbation using the MPPT algorithm to obtain the photovoltaic output voltage corresponding to the maximum photovoltaic output power includes: Step S150, determining a first input voltage according to the photovoltaic input voltage and determining a first input power according to the first input voltage; Step S151, performing a positive perturbation process on the first input voltage to obtain a second input voltage and determining a second input power according to the second input voltage; Step S152, comparing the magnitude relationship between the first input power and the second input power; Step S153, if the first input power is less than the second input power, updating the value of the first input voltage to the value of the second input voltage and executing the step of determining the first input power according to the first input voltage; Step S154, determining the number of positive perturbation processes. If the number of positive perturbation processes is equal to the first preset number, determining the second input voltage as the photovoltaic output voltage corresponding to the maximum photovoltaic output power.

[0034] In this embodiment, referring to Figure 2 , when the main control module executes step S130, positive perturbation processing is performed. Among them, a current detector can be set in the energy storage battery. The current detector can detect the current corresponding to the electricity input by the photovoltaic, so as to obtain the photovoltaic input current. At this time, the main control module can obtain the photovoltaic input current from the current detector.

[0035] The main control module determines the first input voltage according to the photovoltaic input voltage, that is, determines the photovoltaic input voltage as the first input voltage. It can also be understood that the main control module assigns the value of the photovoltaic input voltage to the first input voltage. Then the main control module determines the first input power according to the first input voltage, that is, the main control module determines the first input power according to the first input voltage and the actually measured photovoltaic input current. For example: According to the power formula (Power = Voltage × Current), the main control module can multiply the first input voltage by the actually measured photovoltaic input current to obtain the first input power.

[0036] Among them, the main control module will preset a perturbation step size in advance. Among them, the perturbation step size can be set by the user; it can also be automatically set by the main control module according to the actual situation, and the setting method of the perturbation step size can include the fixed step size method, the adaptive step size method, etc. Fixed step size method: The main control module can set a fixed perturbation step size when the light intensity and temperature are relatively stable. Adaptive step size method: The main control module can automatically adjust the perturbation step size in real time according to environmental parameters such as light intensity and temperature and the characteristics of the photovoltaic.

[0037] After the main control module obtains the first input voltage and the first input power, the main control module will perform positive perturbation processing on the first input voltage to obtain the second input voltage. For example: The main control module adds a perturbation step size to the first input voltage to obtain the second input voltage (that is: Second input voltage = First input voltage + Perturbation step size). Then the main control module determines the second input power according to the second input voltage, that is, the main control module determines the second input power according to the second input voltage and the actually measured photovoltaic input current. For example: According to the power formula (Power = Voltage × Current), the main control module can multiply the second input voltage by the actually measured photovoltaic input current to obtain the second input power.

[0038] After the main control module obtains the first input power and the second input power, it will compare the magnitude relationship between the first input power and the second input power. If the first input power is less than the second input power, it means that the direction of the perturbation processing is correct and the perturbation can continue in this direction; if the first input power is greater than the second input power, it means that the direction of the perturbation processing is wrong and the perturbation direction needs to be changed to the opposite direction.

[0039] If the main control module determines that the first input power is less than the second input power, the main control module will continue with the forward perturbation process, and the main control module will continue the forward perturbation process based on the previous forward perturbation process. The main control module will update the value of the first input voltage to the value of the second input voltage, that is, the main control module will assign the value of the second input voltage to the first input voltage to complete the update of the first input voltage. Moreover, after completing the update of the first input voltage, the main control module will also clear the second input voltage at this time, waiting to obtain the second input voltage again when performing the forward perturbation process on the first input voltage next time. That is, when the first input power is less than the second input power, the main control module will update the value of the first input voltage to the value of the second input voltage and execute the step of determining the first input power according to the first input voltage. That is, the main control module will perform the forward perturbation process multiple times to make the second input voltage gradually approach the voltage corresponding to the maximum photovoltaic output power.

[0040] The main control module can record the number of times of the forward perturbation process, and the main control module will also determine whether the number of times of the forward perturbation process is equal to the first preset number. Among them, after the number of times of the forward perturbation process reaches the first preset number, the second input voltage will infinitely approach the voltage corresponding to the maximum photovoltaic output power, that is, it can be considered that the second input voltage is equal to the voltage corresponding to the maximum photovoltaic output power. Among them, the first preset number can be set according to the actual situation. When the number of times of the forward perturbation process is equal to the first preset number, the main control module can determine the second input voltage as the photovoltaic output voltage corresponding to the maximum photovoltaic output power.

[0041] In a preferred embodiment, since the power-voltage (P-V) curve of the photovoltaic has a single-peak characteristic, the maximum power point (MPP, Maximum Power Point) is the peak point on the curve. To the left of the MPP (the voltage is lower than the MPP voltage), the power increases as the voltage increases; to the right of the MPP (the voltage is higher than the MPP voltage), the power decreases as the voltage increases. Therefore, when the first input voltage falls to the left of the MPP, to determine whether the second input voltage is the photovoltaic output voltage corresponding to the maximum photovoltaic output power, multiple forward perturbation processes can be performed. For example: during the forward perturbation process, if the first input power is less than the second input power, continue with the forward perturbation process; until the first input power is greater than the second input power, at this time, it can be determined that the number of times of the forward perturbation process exceeds the first preset number, and the second input voltage obtained from the previous forward perturbation process can be determined as the photovoltaic output voltage corresponding to the maximum photovoltaic output power. In this embodiment, the first preset number can be determined according to the comparison between the first input power and the second input power.

[0042] In some embodiments, after comparing the magnitudes of the first input power and the second input power as described above, it further includes: Step S160, if the first input power is greater than the second input power, perform a reverse perturbation process on the first input voltage to obtain a third input voltage, and determine a third input power based on the third input voltage; Step S161, compare the magnitude relationship between the first input power and the third input power; Step S162, if the first input power is less than the third input power, update the value of the first input voltage to the value of the third input voltage, determine the first input power based on the first input voltage, and execute the steps of performing a reverse perturbation process on the first input voltage to obtain a third input voltage and determining a third input power based on the third input voltage; Step S163, determine the number of times of the reverse perturbation process. If the number of times of the reverse perturbation process is equal to the second preset number of times, determine the third input voltage as the photovoltaic output voltage corresponding to the maximum photovoltaic output power.

[0043] In this embodiment, referring to Figure 3 , after the main control module executes step S152, a reverse perturbation process is performed. Among them, a current detector can be provided in the energy storage battery. The current detector can detect the current corresponding to the electricity input by the photovoltaic to obtain the photovoltaic input current. At this time, the main control module can obtain the photovoltaic input current from the current detector. Among them, the main control module will preset a perturbation step size in advance. The perturbation step size can be set by the user; it can also be automatically set by the main control module according to the actual situation, and the setting method of the perturbation step size can include a fixed step size method, an adaptive step size method, etc. Fixed step size method: The main control module can set a fixed perturbation step size when the light intensity and temperature are relatively stable. Adaptive step size method: The main control module can automatically adjust the perturbation step size in real time according to environmental parameters such as light intensity and temperature and the characteristics of the photovoltaic.

[0044] If the main control module determines that the first input power is greater than the second input power, it will ignore the second input voltage and the second input power. The main control module will directly perform a reverse perturbation process on the first input voltage to obtain a third input voltage; for example: the main control module subtracts a perturbation step size from the first input voltage to obtain the third input voltage (i.e., the third input voltage = the first input voltage - the perturbation step size). Then the main control module determines the third input power based on the third input voltage, that is, the main control module determines the third input power based on the third input voltage and the measured photovoltaic input current in real time. For example: from the power formula (power = voltage × current), it can be known that the main control module can multiply the third input voltage by the measured photovoltaic input current in real time to obtain the third input power.

[0045] After the main control module obtains the first input power and the third input power, it will compare the magnitudes of the first input power and the third input power. If the first input power is less than the third input power, it indicates that the direction of disturbance processing is correct and the disturbance can continue in this direction; if the first input power is greater than the third input power, it indicates that the direction of disturbance processing is incorrect and the disturbance direction needs to be changed to the opposite direction.

[0046] If the main control module determines that the first input power is less than the third input power, the main control module will continue with the reverse disturbance processing, and the main control module will continue the reverse disturbance processing based on the previous reverse disturbance processing. The main control module will update the value of the first input voltage to the value of the third input voltage, that is, the main control module will assign the value of the third input voltage to the first input voltage to complete the update of the first input voltage. Moreover, after completing the update of the first input voltage, the main control module will also clear the current third input voltage for the next time to obtain the third input voltage again when performing the reverse disturbance processing on the first input voltage. That is, when the first input power is less than the third input power, the main control module will update the value of the first input voltage to the value of the third input voltage, determine the first input power according to the first input voltage, and perform the step of performing the reverse disturbance processing on the first input voltage to obtain the third input voltage and determine the third input power according to the third input voltage. That is, the main control module will perform the reverse disturbance processing multiple times to make the third input voltage gradually approach the voltage corresponding to the maximum photovoltaic output power.

[0047] The main control module can record the number of times of reverse disturbance processing, and the main control module will also judge whether the number of times of reverse disturbance processing is equal to the second preset number. Among them, after the number of times of reverse disturbance processing reaches the second preset number, the third input voltage will infinitely approach the voltage corresponding to the maximum photovoltaic output power, that is, it can be considered that the third input voltage is equal to the voltage corresponding to the maximum photovoltaic output power. Among them, the second preset number can be set according to the actual situation. When the number of times of reverse disturbance processing is equal to the second preset number, the main control module can determine the third input voltage as the photovoltaic output voltage corresponding to the maximum photovoltaic output power.

[0048] In a preferred embodiment, since the power-voltage (P-V) curve of the photovoltaic has a single-peak characteristic, the maximum power point (MPP) is the peak point on the curve. To the left of the MPP (where the voltage is lower than the MPP voltage), the power increases as the voltage increases; to the right of the MPP (where the voltage is higher than the MPP voltage), the power decreases as the voltage increases. Therefore, when the first input voltage falls to the right of the MPP, to determine whether the third input voltage is the photovoltaic output voltage corresponding to the maximum photovoltaic output power, multiple reverse perturbation processes can be performed. For example: during the reverse perturbation process, if the first input power is less than the third input power, continue the reverse perturbation process; until the first input power is greater than the third input power, at this time it can be determined that the number of reverse perturbation processes exceeds the second preset number, and the third input voltage obtained from the previous reverse perturbation process can be determined as the photovoltaic output voltage corresponding to the maximum photovoltaic output power. In this embodiment, the second preset number can be determined based on the comparison between the first input power and the third input power.

[0049] In a preferred embodiment, the photovoltaic input voltage can be first perturbed forward and then perturbed reversely to obtain the photovoltaic output voltage corresponding to the maximum photovoltaic output power; or the photovoltaic input voltage can be first perturbed reversely and then perturbed forward to obtain the photovoltaic output voltage corresponding to the maximum photovoltaic output power. For example: when the first input voltage falls to the left of the MPP, the first input voltage can be first perturbed forward. If the input power obtained after the perturbation increases, continue the forward perturbation process; if the input power obtained after the perturbation decreases, perform a reverse perturbation process to obtain the photovoltaic output voltage corresponding to the maximum photovoltaic output power. Vice versa, when the first input voltage falls to the right of the MPP, the first input voltage can be first perturbed reversely. If the input power obtained after the perturbation increases, continue the reverse perturbation process; if the input power obtained after the perturbation decreases, perform a forward perturbation process to obtain the photovoltaic output voltage corresponding to the maximum photovoltaic output power.

[0050] In some embodiments, the foregoing process of using the MPPT algorithm to perturb the photovoltaic input voltage forward or reversely to obtain the photovoltaic output voltage corresponding to the maximum photovoltaic output power includes: Continuously obtain the working instruction for the perturbation process; After obtaining the working instruction for the perturbation process, execute the step of using the MPPT algorithm to perturb the photovoltaic input voltage forward or reversely to obtain the photovoltaic output voltage corresponding to the maximum photovoltaic output power.

[0051] In this embodiment, when the main control module executes step S130, it also needs to receive a work instruction before execution. The main control module also has the function of remote communication. For example, the main control module can be provided with an RS485 communication unit, and the main control module can perform remote communication through the RS485 communication unit. For example, the user can send a work instruction to the main control module through the user terminal, so that the main control module works according to the work instruction. In this embodiment, the user terminal can be used to control whether the main control module charges the energy storage battery.

[0052] For example, after the main control module determines that the photovoltaic input voltage is within the preset voltage range, it can send the detection result to the user terminal to inform the user terminal that the photovoltaic input voltage meets the voltage requirement for charging the energy storage battery. At this time, the user can determine whether to charge the energy storage battery through the user terminal. If the user determines to charge the energy storage battery through the user terminal, a charging work instruction will be sent through the user terminal. Since the photovoltaic input voltage needs to be disturbed before charging the energy storage battery, the charging work instruction can be a work instruction for disturbance processing. The main control module continuously obtains the work instruction for disturbance processing. After obtaining the work instruction for disturbance processing, the main control module will use the MPPT algorithm to perform positive or negative disturbance processing on the photovoltaic input voltage to obtain the photovoltaic output voltage corresponding to the maximum photovoltaic output power; then charge the energy storage battery according to the photovoltaic output voltage.

[0053] In some embodiments, the charging of the energy storage battery according to the photovoltaic output voltage described above includes: Step S170, detecting whether the photovoltaic output voltage is the optimal charging voltage of the energy storage battery; Step S171, if the photovoltaic output voltage is the optimal charging voltage, charge the energy storage battery according to the photovoltaic output voltage; Step S172, if the photovoltaic output voltage is not the optimal charging voltage, adjust the photovoltaic output voltage so that the photovoltaic output voltage is adjusted to the optimal charging voltage.

[0054] In this embodiment, referring to Figure 4 , when the main control module executes step S140, it will also first detect whether the photovoltaic output voltage obtained after the disturbance processing meets the optimal charging voltage of the energy storage battery. Although the photovoltaic output voltage corresponding to the maximum photovoltaic output power can charge the energy storage battery, the photovoltaic output voltage corresponding to the maximum photovoltaic output power is not necessarily the optimal charging voltage of the energy storage battery. Therefore, the main control module will also detect the photovoltaic output voltage to detect whether the photovoltaic output voltage is the optimal charging voltage of the energy storage battery.

[0055] If the main control module determines that the photovoltaic output voltage is the optimal charging voltage, the main control module will charge the energy storage battery according to the photovoltaic output voltage. That is, if the photovoltaic output voltage is the optimal charging voltage of the energy storage battery, the main control module will directly charge the energy storage battery according to the photovoltaic output voltage.

[0056] If the main control module determines that the photovoltaic output voltage is not the optimal charging voltage, the main control module will first adjust the photovoltaic output voltage to make the photovoltaic output voltage adjusted to the optimal charging voltage, and then charge the energy storage battery according to the adjusted photovoltaic output voltage. That is, if the photovoltaic output voltage is not the optimal charging voltage of the energy storage battery, the main control module will first adjust the photovoltaic output voltage to make the adjusted photovoltaic output voltage the optimal charging voltage, and then charge the energy storage battery according to the adjusted photovoltaic output voltage.

[0057] In some embodiments, the aforementioned adjustment of the photovoltaic output voltage includes: Step S180, determining whether the photovoltaic output voltage is greater than the optimal charging voltage; Step S181, if the photovoltaic output voltage is greater than the optimal charging voltage, performing a step-down process on the photovoltaic output voltage; Step S182, if the photovoltaic output voltage is less than the optimal charging voltage, performing a step-up process on the photovoltaic output voltage.

[0058] In this embodiment, referring to Figure 5 , when the main control module executes step S172, the adjustment includes a step-down process and a step-up process. Among them, the main control module may further include a DC-DC conversion unit, and the DC-DC conversion unit includes a Boost (step-up) unit and a Buck (step-down) unit. The main control module first determines whether the photovoltaic output voltage is greater than the optimal charging voltage. If the main control module determines that the photovoltaic output voltage is greater than the optimal charging voltage, it will perform a step-down process on the photovoltaic output voltage through the Buck unit. If the main control module determines that the photovoltaic output voltage is less than the optimal charging voltage, it will perform a step-up process on the photovoltaic output voltage through the Boost unit.

[0059] For example: The optimal charging voltage can be 58.8V. Then when the photovoltaic output voltage is greater than 58.8V, the main control module can perform a step-down process on the photovoltaic output voltage through the Buck unit to step down the photovoltaic output voltage to 58.8V. Similarly, when the photovoltaic output voltage is less than 58.8V, the main control module can perform a step-up process on the photovoltaic output voltage through the Boost unit to step up the photovoltaic output voltage to 58.8V.

[0060] In some embodiments, after the aforementioned photovoltaic output voltage is the optimal charging voltage, it further includes: Step S190, determining the photovoltaic output current according to the photovoltaic output voltage; Step S191, detect whether the photovoltaic output current is a constant current; Step S192, if the photovoltaic output current is a constant current, charge the energy storage battery according to the photovoltaic output voltage and the photovoltaic output current.

[0061] In this embodiment, referring to Figure 6 , after the main control module executes step S171, it will also detect the photovoltaic output current. Determine the photovoltaic output current according to the photovoltaic output voltage. Since the photovoltaic output voltage is the photovoltaic output voltage corresponding to the maximum photovoltaic output power, the value of the maximum photovoltaic output power and the value of the photovoltaic output voltage can be obtained; and according to the power formula (Power = Voltage × Current), the value of the photovoltaic output current can be obtained. That is, the photovoltaic output current can be determined according to the photovoltaic output voltage and the maximum photovoltaic output power.

[0062] Since when charging the energy storage battery, both stable voltage and stable current are required. This can not only improve the charging efficiency, but also extend the service life of the energy storage battery. That is, the main control module can detect whether the photovoltaic output current is a constant current.

[0063] If the photovoltaic output current is a constant current, the main control module will charge the energy storage battery according to the photovoltaic output voltage and the photovoltaic output current. If the photovoltaic output current is not a constant current, the main control module will stop charging the energy storage battery.

[0064] In a preferred embodiment, after the main control module detects whether the photovoltaic output current is a constant current, it will also detect whether the photovoltaic output current meets the requirements of the charging current of the energy storage battery. After the photovoltaic output current is a constant current and the photovoltaic output current meets the requirements of the charging current of the energy storage battery, the main control module will charge the energy storage battery according to the photovoltaic output voltage and the photovoltaic output current.

[0065] In some embodiments, the aforementioned power control method of the 2000W photovoltaic intelligent MPPT further includes: Step S200, obtain the battery voltage of the energy storage battery; Step S201, determine whether the battery voltage is equal to the preset voltage; Step S202, if the battery voltage is equal to the preset voltage, stop charging the energy storage battery.

[0066] In this embodiment, referring to Figure 7After the main control module executes step S140, it will also determine whether the energy storage battery is fully charged. During the charging process of the energy storage battery, the battery voltage of the energy storage battery will gradually increase; however, there is a maximum value for the battery voltage of the energy storage battery, and this maximum value can be set as the preset voltage. When charging the energy storage battery, when the battery voltage rises to the preset voltage, it can be considered that the energy storage battery is fully charged and should not be charged continuously. The main control module first obtains the battery voltage of the energy storage battery, and then determines whether the battery voltage is equal to the preset voltage. If the main control module determines that the battery voltage is equal to the preset voltage, it can stop charging the energy storage battery. In a preferred embodiment, after the battery voltage is equal to the preset voltage, the energy storage battery can also be charged at a constant voltage for a period of time before stopping charging the energy storage battery.

[0067] In some embodiments, the aforementioned power control method for the 2000W photovoltaic intelligent MPPT further includes: Step S210, obtaining the current flow direction of the energy storage battery; Step S211, judging the current flow direction, where the current flow direction includes current flowing into the energy storage battery and current flowing out of the energy storage battery; Step S212, if the current flow direction is current flowing into the energy storage battery, start the charging current sampling function; Step S213, if the current flow direction is current flowing out of the energy storage battery, start the discharging current sampling function.

[0068] In this embodiment, referring to Figure 8 , the main control module can also sample the current. The main control module first obtains the current flow direction of the energy storage battery; then judges whether the current flow direction is current flowing into the energy storage battery or current flowing out of the energy storage battery; to determine whether the energy storage battery is in the charging state or the discharging state.

[0069] If the main control module determines that the current flow direction is current flowing into the energy storage battery, it can be determined that the energy storage battery is in the charging state. At this time, the main control module will start the charging current sampling function to sample the charging current, so as to detect the charging process of the energy storage battery in real time.

[0070] If the main control module determines that the current flow direction is current flowing out of the energy storage battery, it can be determined that the energy storage battery is in the discharging state. At this time, the main control module will start the discharging current sampling function to sample the discharging current, so as to detect the discharging process of the energy storage battery in real time.

[0071] In a preferred embodiment, the main control module can also adjust the discharge voltage during the discharge process of the energy storage battery. The main control module can include a 12V buck unit and a 24V buck unit. The main control module can adjust the discharge voltage to 12V through the 12V buck unit; the main control module can adjust the discharge voltage to 24V through the 24V buck unit. Among them, the energy storage battery can also include a discharge interface, and the discharge interface can supply power to other devices. Among them, the discharge interface can include a cigarette lighter interface, a Type-C interface, a USB interface, etc. The main control module adjusts the discharge voltage to 12V through the 12V buck unit, and the 12V discharge voltage can supply power to the cigarette lighter interface. The main control module adjusts the discharge voltage to 24V through the 24V buck unit, and the 24V discharge voltage can supply power to the Type-C interface and the USB interface.

[0072] The present invention also proposes a power control system for a 2000W photovoltaic intelligent MPPT. The power control system for a 2000W photovoltaic intelligent MPPT includes a 2000W photovoltaic and an energy storage battery. The energy storage battery includes a main control module, and the main control module is configured with an MPPT algorithm. The main control module can execute the power control method for the 2000W photovoltaic intelligent MPPT in any one of the above.

[0073] In this embodiment, referring to Figure 9 , the power control system for a 2000W photovoltaic intelligent MPPT includes a 2000W photovoltaic and an energy storage battery. The 2000W photovoltaic is connected to the energy storage battery, and the electric energy generated by the 2000W photovoltaic can be transmitted to the energy storage battery, so that the energy storage battery stores the electric energy generated by the 2000W photovoltaic. The energy storage battery includes a main control module, and the main control module is configured with an MPPT algorithm. The main control module can execute the power control method for the 2000W photovoltaic intelligent MPPT in any one of the above.

[0074] The present invention processes the photovoltaic input voltage through the MPPT algorithm to obtain the photovoltaic output voltage corresponding to the maximum photovoltaic output power, and then uses the photovoltaic output voltage corresponding to the maximum photovoltaic output power to charge the energy storage battery; through the MPPT algorithm, the photovoltaic input voltage generated during photovoltaic power generation will be output at the photovoltaic output voltage corresponding to the maximum photovoltaic output power and charge the energy storage battery; thereby improving the charging efficiency of the energy storage battery and giving full play to the maximum efficiency of photovoltaic power generation. Moreover, it can also detect the discharge process of the energy storage battery and adjust the discharge voltage, increasing the applicable scenarios of the energy storage battery.

[0075] The present invention also proposes a power control device for a 2000W photovoltaic intelligent MPPT. Refer to Figure 10 , Figure 10 is a schematic structural diagram of the power control device for a 2000W photovoltaic intelligent MPPT in the hardware operating environment involved in the embodiment solution of the present invention.

[0076] The power control device of the 2000W photovoltaic intelligent MPPT according to the embodiment of the present invention can be a processor capable of running the power control method of the 2000W photovoltaic intelligent MPPT; there is at least one processor. As Figure 10 shown, the power control device of the 2000W photovoltaic intelligent MPPT may include: a processor 1001 (such as a CPU), a network interface 1004, a user interface 1003, a memory 1005, and a communication bus 1002. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display) and an input unit, such as a keyboard (Keyboard). Optionally, the user interface 1003 may further include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a WI-FI interface). The memory 1005 may be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0077] Those skilled in the art can understand that Figure 10 the structure of the power control device of the 2000W photovoltaic intelligent MPPT shown in

[0078] does not constitute a limitation on the power control device of the 2000W photovoltaic intelligent MPPT, and may include more or fewer components than shown in the figure, or combine some components, or arrange different components. Figure 10 As

[0079] shown, the memory 1005, as a computer storage medium, may include an operating system, a network communication module, a user interface module, and a computer program. Figure 10 In the power control device of the 2000W photovoltaic intelligent MPPT shown in

[0080] the network interface 1004 is mainly used to connect to the background server and communicate with the background server for data; the user interface 1003 is mainly used to connect to the client (user side) and communicate with the client for data; and the processor 1001 can be used to call the computer program stored in the memory 1005. When the computer program is called and executed by the processor 1001, the steps of the above-mentioned power control method of the 2000W photovoltaic intelligent MPPT are realized.

[0081] The present invention also provides a storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the power control method for the 2000W photovoltaic intelligent MPPT according to any one of the above technical solutions are implemented.

[0082] The above are only partial or preferred embodiments of the present invention. Whether in terms of words or drawings, the scope of protection of the present invention cannot be limited thereby. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the overall concept of the present invention, or any direct / indirect application in other related technical fields is included in the scope of protection of the present invention.

Claims

1. A power control method for a 2000W photovoltaic intelligent MPPT, which is used for a storage battery, is characterized in that, The power control method of the 2000W photovoltaic intelligent MPPT includes: Obtain the photovoltaic input voltage of the photovoltaic power generation; Detect whether the photovoltaic input voltage is within a preset voltage range; If the photovoltaic input voltage is within the preset voltage range, use the MPPT algorithm to perform forward perturbation or reverse perturbation processing on the photovoltaic input voltage to obtain the photovoltaic output voltage corresponding to the maximum photovoltaic output power; Charge the energy storage battery according to the photovoltaic output voltage, where the photovoltaic output voltage is the photovoltaic output voltage corresponding to the maximum photovoltaic output power.

2. The power control method of the 2000W photovoltaic intelligent MPPT according to claim 1, wherein The step of using the MPPT algorithm to perform forward perturbation or reverse perturbation processing on the photovoltaic input voltage to obtain the photovoltaic output voltage corresponding to the maximum photovoltaic output power includes: Determine a first input voltage according to the photovoltaic input voltage, and determine a first input power according to the first input voltage; Perform forward perturbation processing on the first input voltage to obtain a second input voltage, and determine a second input power according to the second input voltage; Compare the magnitude relationship between the first input power and the second input power; If the first input power is less than the second input power, update the value of the first input voltage to the value of the second input voltage, and execute the step of determining the first input power according to the first input voltage; Determine the number of times of forward perturbation processing. If the number of times of forward perturbation processing is equal to a first preset number, determine the second input voltage as the photovoltaic output voltage corresponding to the maximum photovoltaic output power.

3. The power control method of the 2000W photovoltaic intelligent MPPT according to claim 2, wherein After comparing the magnitude relationship between the first input power and the second input power, it further includes: If the first input power is greater than the second input power, perform reverse perturbation processing on the first input voltage to obtain a third input voltage, and determine a third input power according to the third input voltage; Compare the magnitude relationship between the first input power and the third input power; If the first input power is less than the third input power, update the value of the first input voltage to the value of the third input voltage, determine the first input power according to the first input voltage, and execute the steps of performing reverse perturbation processing on the first input voltage to obtain a third input voltage and determining a third input power according to the third input voltage; Determine the number of times of reverse perturbation processing. If the number of times of reverse perturbation processing is equal to a second preset number, determine the third input voltage as the photovoltaic output voltage corresponding to the maximum photovoltaic output power.

4. The power control method of the 2000W photovoltaic intelligent MPPT according to claim 1, characterized in that, The step of using the MPPT algorithm to perform forward perturbation or reverse perturbation processing on the photovoltaic input voltage to obtain the photovoltaic output voltage corresponding to the maximum photovoltaic output power includes: Continuously obtain the working instruction for perturbation processing; After obtaining the working instruction for perturbation processing, execute the steps of using the MPPT algorithm to perform forward perturbation or reverse perturbation processing on the photovoltaic input voltage to obtain the photovoltaic output voltage corresponding to the maximum photovoltaic output power.

5. The power control method of the 2000W photovoltaic intelligent MPPT according to claim 1, characterized in that, The step of charging the energy storage battery according to the photovoltaic output voltage includes: Detect whether the photovoltaic output voltage is the optimal charging voltage of the energy storage battery; If the photovoltaic output voltage is the optimal charging voltage, charge the energy storage battery according to the photovoltaic output voltage; If the photovoltaic output voltage is not the optimal charging voltage, adjust the photovoltaic output voltage so that the photovoltaic output voltage is adjusted to the optimal charging voltage.

6. The power control method of the 2000W photovoltaic intelligent MPPT according to claim 5, characterized in that, The adjustment of the photovoltaic output voltage includes: Judge whether the photovoltaic output voltage is greater than the optimal charging voltage; If the photovoltaic output voltage is greater than the optimal charging voltage, perform a buck processing on the photovoltaic output voltage; If the photovoltaic output voltage is less than the optimal charging voltage, perform a boost processing on the photovoltaic output voltage.

7. The power control method of the 2000W photovoltaic intelligent MPPT according to claim 5, characterized in that, After the photovoltaic output voltage is the optimal charging voltage, it further includes: Determine the photovoltaic output current according to the photovoltaic output voltage; Detect that the photovoltaic output current is a constant current; If the photovoltaic output current is a constant current, charge the energy storage battery according to the photovoltaic output voltage and the photovoltaic output current.

8. The power control method of the 2000W photovoltaic intelligent MPPT according to claim 1, characterized in that, The power control method of the 2000W photovoltaic intelligent MPPT further includes: Obtain the battery voltage of the energy storage battery; Judge whether the battery voltage is equal to a preset voltage; If the battery voltage is equal to the preset voltage, stop charging the energy storage battery.

9. The power control method of the 2000W photovoltaic intelligent MPPT according to claim 1, wherein The power control method of the 2000W photovoltaic intelligent MPPT further includes: Obtain the current flow direction of the energy storage battery; Judge the current flow direction, where the current flow direction includes current flowing into the energy storage battery and current flowing out of the energy storage battery; If the current flow direction is current flowing into the energy storage battery, start the charging current sampling function; If the current flow direction is current flowing out of the energy storage battery, start the discharging current sampling function.

10. A power control system for a 2000W photovoltaic intelligent MPPT, characterized in that, The power control system of the 2000W photovoltaic intelligent MPPT includes a 2000W photovoltaic and an energy storage battery. The energy storage battery includes a main control module configured with an MPPT algorithm, and the main control module can execute the power control method of the 2000W photovoltaic intelligent MPPT according to any one of claims 1 to 9.

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