Control method and device of photovoltaic tracking bracket and photovoltaic system

Abstract

The present application discloses a control method, device and photovoltaic system for a photovoltaic tracking bracket, belonging to the field of photovoltaic technology. A photovoltaic module is installed on a photovoltaic tracking bracket, and the photovoltaic tracking bracket, the photovoltaic module and the auxiliary power supply form a photovoltaic control system. The method is applied to the photovoltaic control system, and the method includes: obtaining the maximum rotation power consumption of the photovoltaic tracking bracket and obtaining the current remaining power of the auxiliary power supply, the maximum rotation power consumption is the power consumption of the photovoltaic tracking bracket rotating from the limit position of the photovoltaic tracking bracket to the protection position of the photovoltaic tracking bracket; based on the current remaining power, the maximum rotation power consumption and the protection power threshold of the auxiliary power supply, determining the current available power of the auxiliary power supply; based on the current output power and the current available power of the photovoltaic module, controlling at least one of the photovoltaic module and the auxiliary power supply to supply power to the photovoltaic tracking bracket to drive the photovoltaic tracking bracket to rotate.

Description

Technical Field

[0001] The present application belongs to the field of photovoltaic technology, and in particular, relates to a control method and device for a photovoltaic tracking bracket and a photovoltaic system. Background Art

[0002] In a photovoltaic tracking system, photovoltaic modules can be used as a self-powered system to power the tracking bracket and drive the tracking bracket to rotate, which can reduce the demand for external power supply, reduce costs, and improve system flexibility. However, the self-powered system is highly dependent on weather, and backup batteries are usually designed as auxiliary power supplies to power the tracking bracket in conjunction with the self-powered system. The design of a photovoltaic tracking system is usually more complex and requires high system maintenance.

[0003] At present, the power supply operation strategy for the tracking bracket cannot guarantee the safe operation of the photovoltaic tracking system. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a control method, device and photovoltaic system for a photovoltaic tracking bracket, which can control the auxiliary power supply to supply power to the photovoltaic tracking bracket while ensuring the safe operation of the auxiliary power supply, thereby ensuring the safe operation of the photovoltaic system.

[0005] In a first aspect, the present application provides a control method for a photovoltaic tracking bracket, wherein a photovoltaic assembly is installed on the photovoltaic tracking bracket, and the photovoltaic tracking bracket, the photovoltaic assembly and an auxiliary power supply constitute a photovoltaic control system. The method is applied to the photovoltaic control system, and the method comprises:

[0006] S110, obtaining the maximum rotation power consumption of the photovoltaic tracking bracket and the current remaining power of the auxiliary power supply, wherein the maximum rotation power consumption is the power consumption of the photovoltaic tracking bracket when rotating from the limit position of the photovoltaic tracking bracket to the protection position of the photovoltaic tracking bracket;

[0007] S120, determining the current available power of the auxiliary power supply based on the current remaining power, the maximum rotation power consumption and the protection power threshold of the auxiliary power supply;

[0008] S130: Based on the current output power of the photovoltaic assembly and the current available power, control at least one of the photovoltaic assembly and the auxiliary power supply to supply power to the photovoltaic tracking bracket to drive the photovoltaic tracking bracket to rotate.

[0009] According to the control method of the photovoltaic tracking bracket of the present application, the current available power of the auxiliary power supply is calculated in real time through the current remaining power of the auxiliary power supply, the maximum rotational power consumption of the photovoltaic tracking bracket and the protection power threshold of the auxiliary power supply. The current available power can represent the amount of power that the auxiliary power supply can output for use while ensuring the safe operation of the auxiliary power supply. According to the current output power of the photovoltaic module and the current available power of the auxiliary power supply, the auxiliary power supply can be controlled to supply power to the photovoltaic tracking bracket while ensuring the safe operation of the auxiliary power supply, thereby ensuring the safe operation of the photovoltaic system.

[0010] According to one embodiment of the present application, the S130 includes:

[0011] S131. When the current output power is greater than 0, based on the current output power and the current available power, control the photovoltaic assembly to supply power to the photovoltaic tracking bracket, or control the photovoltaic assembly and the auxiliary power supply to supply power to the photovoltaic tracking bracket.

[0012] According to one embodiment of the present application, the S131 includes:

[0013] When the current available power is greater than or equal to 0, determining whether the current output power is greater than or equal to the required power of the photovoltaic tracking bracket;

[0014] If yes, the photovoltaic assembly is controlled to supply power to the photovoltaic tracking bracket.

[0015] According to one embodiment of the present application, the S131 includes:

[0016] When the current available power is greater than or equal to 0, determining whether the current output power is greater than or equal to the required power of the photovoltaic tracking bracket;

[0017] If not, the photovoltaic assembly and the auxiliary power supply are controlled to supply power to the photovoltaic tracking bracket.

[0018] According to one embodiment of the present application, the S131 includes:

[0019] When the currently available power is less than 0, the photovoltaic assembly is controlled to supply power to the auxiliary power supply.

[0020] According to one embodiment of the present application, the S131 includes:

[0021] When the current available power is less than 0, determining the second output sub-power of the photovoltaic assembly based on the current output power and the first output sub-power of the photovoltaic assembly, wherein the first output sub-power is the power of the photovoltaic assembly supplying power to the auxiliary power supply;

[0022] When the second output sub-power is greater than or equal to the required power of the photovoltaic tracking bracket, the photovoltaic assembly is controlled to supply power to the photovoltaic tracking bracket to drive the photovoltaic tracking bracket to rotate.

[0023] According to one embodiment of the present application, the S131 includes:

[0024] When the current available power is less than 0, determining the second output sub-power of the photovoltaic assembly based on the current output power and the first output sub-power of the photovoltaic assembly, wherein the first output sub-power is the power of the photovoltaic assembly supplying power to the auxiliary power supply;

[0025] When the second output sub-power is less than the required power, the photovoltaic tracking bracket is not driven to rotate.

[0026] According to one embodiment of the present application, the S130 includes:

[0027] S132: When the current output power is equal to 0, based on the current available power, control the auxiliary power supply to supply power to the photovoltaic tracking bracket to drive the photovoltaic tracking bracket to rotate.

[0028] According to one embodiment of the present application, the S132 includes:

[0029] Determine whether the current available power is greater than or equal to 0;

[0030] If yes, the photovoltaic tracking bracket is not driven to rotate;

[0031] If not, the auxiliary power supply is controlled to supply power to the photovoltaic tracking bracket, so as to drive the photovoltaic tracking bracket to rotate to the protection position.

[0032] According to one embodiment of the present application, the method further includes:

[0033] When the current remaining power is less than or equal to the protection power threshold, a low power alarm message is output.

[0034] According to one embodiment of the present application, the method further includes:

[0035] When the current battery health state of the auxiliary power supply is less than a first battery health state threshold, performing fault warning processing on the auxiliary power supply;

[0036] When the current battery health state of the auxiliary power supply is less than a second battery health state threshold, performing fault alarm processing on the auxiliary power supply;

[0037] The second battery state of health threshold is less than the first battery state of health threshold.

[0038] According to one embodiment of the present application, the S110 includes:

[0039] Acquire a current state of charge of the auxiliary power source and a current battery health state of the auxiliary power source;

[0040] The current remaining power is determined based on the current state of charge, the current battery health state, and a rated capacity of the auxiliary power source.

[0041] In a second aspect, the present application provides a control device for a photovoltaic tracking bracket, a photovoltaic assembly is installed on the photovoltaic tracking bracket, the photovoltaic tracking bracket, the photovoltaic assembly and an auxiliary power supply constitute a photovoltaic control system, the device is connected to the photovoltaic control system, and the device includes:

[0042] An acquisition module, used to acquire the maximum rotation power consumption of the photovoltaic tracking bracket and the current remaining power of the auxiliary power supply;

[0043] A first processing module, configured to determine a current available power of the auxiliary power supply based on the current remaining power, the maximum rotation power consumption and a protection power threshold of the auxiliary power supply;

[0044] The second processing module is used to control at least one of the photovoltaic component and the auxiliary power supply to supply power to the photovoltaic tracking bracket based on the current output power of the photovoltaic component and the current available power, so as to drive the photovoltaic tracking bracket to rotate.

[0045] According to the control device of the photovoltaic tracking bracket of the present application, the current available power of the auxiliary power supply is calculated in real time through the current remaining power of the auxiliary power supply, the maximum rotational power consumption of the photovoltaic tracking bracket and the protection power threshold of the auxiliary power supply. The current available power can represent the amount of power that the auxiliary power supply can output for use while ensuring the safe operation of the auxiliary power supply. According to the current output power of the photovoltaic module and the current available power of the auxiliary power supply, the auxiliary power supply can be controlled to supply power to the photovoltaic tracking bracket while ensuring the safe operation of the auxiliary power supply, thereby ensuring the safe operation of the photovoltaic system.

[0046] According to one embodiment of the present application, the second processing module is used to control the photovoltaic assembly to power the photovoltaic tracking bracket, or control the photovoltaic assembly and the auxiliary power supply to power the photovoltaic tracking bracket based on the current output power and the current available power when the current output power is greater than 0.

[0047] According to one embodiment of the present application, the second processing module is used to control the auxiliary power supply to supply power to the photovoltaic tracking bracket to drive the photovoltaic tracking bracket to rotate based on the current available power when the current output power is equal to 0.

[0048] In a third aspect, the present application provides a photovoltaic system, the photovoltaic system comprising:

[0049] At least one photovoltaic module, wherein the photovoltaic module is mounted on a photovoltaic tracking bracket, and the photovoltaic tracking bracket, the photovoltaic module and an auxiliary power supply form a photovoltaic control system;

[0050] As described in the second aspect above, the control device of the photovoltaic tracking bracket is connected to the photovoltaic component and the auxiliary power supply, and the control device is used to control at least one of the photovoltaic component and the auxiliary power supply to supply power to the photovoltaic tracking bracket to drive the photovoltaic tracking bracket to rotate.

[0051] According to the photovoltaic system of the present application, the current available power of the auxiliary power supply can be calculated in real time through the current remaining power of the auxiliary power supply, the maximum rotational power consumption of the photovoltaic tracking bracket and the protection power threshold of the auxiliary power supply. The current available power can represent the amount of power that the auxiliary power supply can output for use while ensuring the safe operation of the auxiliary power supply. According to the current output power of the photovoltaic module and the current available power of the auxiliary power supply, the auxiliary power supply can be controlled to supply power to the photovoltaic tracking bracket while ensuring the safe operation of the auxiliary power supply, thereby ensuring the safe operation of the photovoltaic system.

[0052] In a fourth aspect, the present application provides an electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the control method of the photovoltaic tracking bracket as described in the first aspect above is implemented.

[0053] In a fifth aspect, the present application provides a non-transitory computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the control method of the photovoltaic tracking bracket as described in the first aspect above is implemented.

[0054] In a sixth aspect, the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the control method of the photovoltaic tracking bracket as described in the first aspect above.

[0055] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0057] Figure 1 This is one of the flow charts of the control method of the photovoltaic tracking bracket provided in the embodiment of the present application;

[0058] Figure 2 This is the second flow chart of the control method of the photovoltaic tracking bracket provided in the embodiment of the present application;

[0059] Figure 3 This is the third flow chart of the control method of the photovoltaic tracking bracket provided in the embodiment of the present application;

[0060] Figure 4 It is a schematic diagram of the structure of the control device of the photovoltaic tracking bracket provided in the embodiment of the present application;

[0061] Figure 5 It is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0062] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0063] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0064] In conjunction with the accompanying drawings, the control method of the photovoltaic tracking bracket, the control device of the photovoltaic tracking bracket, the photovoltaic system, the electronic device and the readable storage medium provided in the embodiments of the present application are described in detail through specific embodiments and their application scenarios.

[0065] The control method of the photovoltaic tracking bracket may be applied to a terminal, and may be specifically executed by hardware or software in the terminal.

[0066] The terminal includes but is not limited to a desktop computer. However, it should be understood that the terminal may include one or more other physical user interface devices such as a physical keyboard, a mouse and a joystick.

[0067] The control method of the photovoltaic tracking bracket provided in the embodiment of the present application can be executed by an electronic device or a functional module or functional entity in the electronic device that can implement the control method of the photovoltaic tracking bracket. The electronic devices mentioned in the embodiment of the present application include but are not limited to computers, etc. The control method of the photovoltaic tracking bracket provided in the embodiment of the present application is described below using the electronic device as an example of the execution subject.

[0068] The photovoltaic assembly provided in the embodiment of the present application is installed on a photovoltaic tracking bracket, the photovoltaic tracking bracket is electrically connected to the photovoltaic assembly and an auxiliary power supply, the photovoltaic tracking bracket, the photovoltaic assembly and the auxiliary power supply constitute a photovoltaic control system, and the control method of the photovoltaic tracking bracket is applied to the photovoltaic control system.

[0069] Among them, photovoltaic modules are components that convert solar energy into electrical energy and store or output the electrical energy. Photovoltaic modules are installed on photovoltaic tracking brackets, and the photovoltaic tracking brackets can adjust the angle of the photovoltaic modules by rotating.

[0070] In this embodiment, the photovoltaic tracking bracket is electrically connected to the photovoltaic assembly and the auxiliary power supply, and the photovoltaic assembly and the auxiliary power supply are used to power the photovoltaic tracking bracket and drive the photovoltaic tracking bracket to rotate, wherein the auxiliary power supply can be a storage battery or the like.

[0071] like Figure 1 As shown, the control method of the photovoltaic tracking bracket includes: S110, S120 and S130.

[0072] S110, obtaining the maximum rotation power consumption of the photovoltaic tracking bracket, and obtaining the current remaining power of the auxiliary power supply.

[0073] Among them, the maximum rotation power consumption is the power consumption of the photovoltaic tracking bracket rotating from the limited position of the photovoltaic tracking bracket to the protection position of the photovoltaic tracking bracket.

[0074] The limit position refers to the position corresponding to the maximum angle or minimum angle that the photovoltaic tracking bracket can reach in the process of tracking the movement of the sun; the protection position refers to the position corresponding to the angle at which the photovoltaic tracking bracket suffers the least damage under extreme weather conditions such as strong winds.

[0075] In this embodiment, under certain weather conditions, the power consumption of the photovoltaic tracking bracket when rotating from the limit position to the protection position can be calculated as the maximum rotation power consumption.

[0076] In actual implementation, the power consumption of the photovoltaic tracking bracket rotating from the limit position to the protection position can be calculated as the maximum rotation power consumption under the local most unfavorable load. The local most unfavorable load is determined according to the design specifications of the photovoltaic system. The local most unfavorable load can characterize the worst weather conditions of the photovoltaic system, such as the weather with the strongest wind and the heaviest snow.

[0077] In this embodiment, the current remaining power is the remaining power stored in the auxiliary power supply at the current moment, which can be obtained through the battery management system, or can be calculated by obtaining battery parameters such as charge state, battery health status, output current or output voltage.

[0078] S120: Determine the current available power of the auxiliary power supply based on the current remaining power, the maximum rotation power consumption, and the protection power threshold of the auxiliary power supply.

[0079] The protection power threshold is the minimum value of the power stored in the auxiliary power supply when the auxiliary power supply operates normally, and the current available power is the power that the auxiliary power supply can output for use while ensuring the safe operation of the auxiliary power supply.

[0080] In this embodiment, the current available power can be obtained by performing corresponding mathematical operations on the current remaining power, the maximum rotation power consumption and the protection power threshold.

[0081] In actual implementation, the current remaining power can be subtracted from the maximum rotation power consumption, and then subtracted from the protection power threshold to obtain the current available power.

[0082] For example, the current remaining power is Q, and the maximum rotation power consumption is Q c , the protection power threshold is Q0, and the current available power is QQ c -Q0.

[0083] S130: Based on the current output power and current available power of the photovoltaic assembly, control at least one of the photovoltaic assembly and the auxiliary power supply to supply power to the photovoltaic tracking bracket to drive the photovoltaic tracking bracket to rotate.

[0084] The current output power is the output power of the photovoltaic module at the current moment.

[0085] In this embodiment, when the photovoltaic component has power output, at least one of the photovoltaic component and the auxiliary power supply can be controlled to supply power to the photovoltaic tracking bracket according to the current output power and the current available power to drive the photovoltaic tracking bracket to rotate; or, when the photovoltaic component has no power output, the auxiliary power supply can be controlled to supply power to the photovoltaic tracking bracket according to the current available power to drive the photovoltaic tracking bracket to rotate.

[0086] In this embodiment, the output power of the photovoltaic assembly and the operating safety of the auxiliary power supply can be comprehensively considered according to the current output power and the current available power, and the photovoltaic assembly and the auxiliary power supply can be controlled to supply power to the photovoltaic tracking bracket together to drive the photovoltaic tracking bracket to rotate; or the photovoltaic assembly can be controlled to supply power to the photovoltaic tracking bracket to drive the photovoltaic tracking bracket to rotate; or the auxiliary power supply can be controlled to supply power to the photovoltaic tracking bracket to drive the photovoltaic tracking bracket to rotate; or the photovoltaic tracking bracket is not supplied with power and the photovoltaic tracking bracket is not driven to rotate.

[0087] It should be noted that controlling at least one of the photovoltaic components and the auxiliary power supply to power the photovoltaic tracking bracket and drive the photovoltaic tracking bracket to rotate can power the motor of the photovoltaic tracking bracket by controlling at least one of the photovoltaic components and the auxiliary power supply, and the motor of the photovoltaic tracking bracket can drive the photovoltaic tracking bracket to rotate.

[0088] In an embodiment of the present application, the current available power of the auxiliary power supply is calculated in real time based on the current remaining power of the auxiliary power supply, the maximum rotational power consumption of the photovoltaic tracking bracket and the protection power threshold of the auxiliary power supply. The current available power can represent the amount of power that the auxiliary power supply can output for use while ensuring the safe operation of the auxiliary power supply. Based on the current output power of the photovoltaic component and the current available power of the auxiliary power supply, at least one of the photovoltaic component and the auxiliary power supply is controlled to supply power to the photovoltaic tracking bracket. This can improve the operating stability of the photovoltaic tracking bracket, and can control the auxiliary power supply to supply power to the photovoltaic tracking bracket while considering the safe operation of the auxiliary power supply, thereby ensuring the safe operation of the photovoltaic system.

[0089] According to the control method of the photovoltaic tracking bracket provided in the embodiment of the present application, the current available power of the auxiliary power supply is calculated in real time through the current remaining power of the auxiliary power supply, the maximum rotational power consumption of the photovoltaic tracking bracket and the protection power threshold of the auxiliary power supply. The current available power can represent the amount of power that the auxiliary power supply can output for use while ensuring the safe operation of the auxiliary power supply. According to the current output power of the photovoltaic module and the current available power of the auxiliary power supply, the auxiliary power supply can be controlled to supply power to the photovoltaic tracking bracket while ensuring the safe operation of the auxiliary power supply, thereby ensuring the safe operation of the photovoltaic system.

[0090] In some embodiments, Figure 2 As shown, S130, including:

[0091] S131. When the current output power is greater than 0, based on the current output power and the current available power, control the photovoltaic assembly to supply power to the photovoltaic tracking bracket, or control the photovoltaic assembly and the auxiliary power supply to supply power to the photovoltaic tracking bracket.

[0092] In this embodiment, the current available power can be compared with a preset first remaining power threshold. If the current available power is greater than or equal to the first remaining power threshold, it indicates that the auxiliary power supply can output power, and the power output of the auxiliary power supply will not affect the safe operation of the auxiliary power supply. When the current available power is greater than or equal to the first remaining power threshold, the auxiliary power supply can be charged. If the current available power is less than the first remaining power threshold, it indicates that continued power output of the auxiliary power supply may affect the safe operation of the auxiliary power supply. When the current available power is less than the first remaining power threshold, the auxiliary power supply can be charged.

[0093] In this embodiment, the current output power is not equal to 0, indicating that the photovoltaic component has power output. When the photovoltaic component has power output, the current available power can be compared with the first remaining power threshold. According to the comparison result and the current output power, at least one of the photovoltaic component and the auxiliary power supply is controlled to supply power to the photovoltaic tracking bracket to drive the photovoltaic tracking bracket to rotate.

[0094] For example, the current available power is QQ c -Q0, the first remaining power threshold is 0, when the photovoltaic module has power output, it is judged that QQ c - Whether Q0 is greater than 0, according to QQ c The comparison result of -Q0 and 0 is combined with the current output power to control the photovoltaic components to supply power to the photovoltaic tracking bracket, or to control the photovoltaic components and auxiliary power supply to supply power to the photovoltaic tracking bracket to drive the photovoltaic tracking bracket to rotate.

[0095] In some embodiments, S131 includes:

[0096] When the current available power is greater than or equal to 0, determine whether the current output power is greater than or equal to the required power of the photovoltaic tracking bracket;

[0097] If so, the photovoltaic components are controlled to supply power to the photovoltaic tracking bracket;

[0098] If not, the photovoltaic components and auxiliary power supply are controlled to supply power to the photovoltaic tracking bracket.

[0099] The required power is the power required for the motor of the photovoltaic tracking bracket to drive the photovoltaic tracking bracket to rotate.

[0100] In this embodiment, when the current available power is greater than or equal to 0, the current output power is compared with the required power. According to the comparison result of the current output power and the required power, the photovoltaic assembly is controlled to power the photovoltaic tracking bracket alone to drive the photovoltaic tracking bracket to rotate, or the photovoltaic assembly and the auxiliary power supply are controlled to power the photovoltaic tracking bracket together to drive the photovoltaic tracking bracket to rotate.

[0101] In this embodiment, the current output power is greater than or equal to the required power, indicating that the power provided by the photovoltaic assembly alone to the motor of the photovoltaic tracking bracket can drive the photovoltaic tracking bracket to rotate, and the photovoltaic assembly can be controlled to supply power to the photovoltaic tracking bracket alone to drive the photovoltaic tracking bracket to rotate.

[0102] In this embodiment, the current output power is less than the required power, indicating that the power provided by the photovoltaic assembly alone to the motor of the photovoltaic tracking bracket cannot drive the photovoltaic tracking bracket to rotate. The photovoltaic assembly and the auxiliary power supply can be controlled to power the photovoltaic tracking bracket together to drive the photovoltaic tracking bracket to rotate.

[0103] In this embodiment, when the current output power of the photovoltaic component is greater than or equal to the required power of the photovoltaic tracking bracket, the photovoltaic component is preferentially controlled to supply power to the photovoltaic tracking bracket and drive the photovoltaic tracking bracket to rotate, which can reduce the power output of the auxiliary power supply, reduce power waste, and improve the performance of the auxiliary power supply.

[0104] In some embodiments, S131 includes:

[0105] When the current available power is less than 0, the photovoltaic components are controlled to supply power to the auxiliary power supply.

[0106] In this embodiment, the current available power is less than 0, and the available power of the auxiliary power supply is small. Maintaining the state of available power of the auxiliary power supply being less than 0 may affect the safe operation of the auxiliary power supply. The photovoltaic components are controlled to preferentially supply power to the auxiliary power supply until the current available power is greater than 0, thereby ensuring the safe operation of the auxiliary power supply.

[0107] In some embodiments, S131 includes:

[0108] When the current available power is less than 0, determining the second output sub-power of the photovoltaic assembly based on the current output power and the first output sub-power of the photovoltaic assembly;

[0109] When the second output sub-power is greater than or equal to the required power of the photovoltaic tracking bracket, the photovoltaic assembly is controlled to supply power to the photovoltaic tracking bracket to drive the photovoltaic tracking bracket to rotate;

[0110] When the second output sub-power is less than the required power, the photovoltaic tracking bracket is not driven to rotate.

[0111] The first output sub-power is the power supplied by the photovoltaic assembly to the auxiliary power supply, and the second output sub-power is the power of the photovoltaic assembly other than the power supplied to the auxiliary power supply.

[0112] It can be understood that the second output sub-power may be equal to the current output power minus the first output sub-power.

[0113] In this embodiment, the second output sub-power is greater than or equal to the required power, indicating that while the photovoltaic component supplies power to the auxiliary power supply, the power provided to the motor of the photovoltaic tracking bracket can drive the photovoltaic tracking bracket to rotate, and the photovoltaic component can be controlled to supply power to the photovoltaic tracking bracket to drive the photovoltaic tracking bracket to rotate.

[0114] The second output sub-power is less than the required power, indicating that the power provided by the photovoltaic assembly to the motor of the photovoltaic tracking bracket alone cannot drive the photovoltaic tracking bracket to rotate. The photovoltaic tracking bracket may not be powered and may not be driven to rotate.

[0115] It should be noted that not supplying power to the photovoltaic tracking bracket may mean not supplying power to the motor of the photovoltaic tracking bracket, but supplying power to the circuit board of the photovoltaic tracking bracket.

[0116] In this embodiment, when the current available power of the auxiliary power supply is less than 0, the photovoltaic assembly is controlled to supply power to the auxiliary power supply first, thereby ensuring the safe operation of the auxiliary power supply.

[0117] In some embodiments, Figure 3 As shown, S130, including:

[0118] S132. When the current output power is equal to 0, based on the current available power, control the auxiliary power supply to supply power to the photovoltaic tracking bracket to drive the photovoltaic tracking bracket to rotate.

[0119] In this embodiment, the current available power may be compared with a preset second remaining power threshold, and the second remaining power threshold may be equal to the second remaining power threshold.

[0120] The current available power is greater than or equal to the second remaining power threshold, indicating that the auxiliary power supply can output power, and the power output of the auxiliary power supply will not affect the safe operation of the battery; the current available power is less than the second remaining power threshold, indicating that the continued power output of the auxiliary power supply may affect the safe operation of the battery.

[0121] In this embodiment, the current output power equal to 0 indicates that the photovoltaic component has no power output. When the photovoltaic component has no power output, the current available power can be compared with the second remaining power threshold. According to the comparison result, the auxiliary power supply is controlled to power the photovoltaic tracking bracket to drive the photovoltaic tracking bracket to rotate.

[0122] In some embodiments, S132 includes:

[0123] Determine whether the current available power is greater than or equal to 0;

[0124] If so, the photovoltaic tracking bracket will not be driven to rotate;

[0125] If not, control the auxiliary power supply to supply power to the photovoltaic tracking bracket, and drive the photovoltaic tracking bracket to rotate to the protection position.

[0126] In this embodiment, when the current available power is greater than or equal to 0, the photovoltaic tracking bracket is not powered and is not driven to rotate.

[0127] It should be noted that not supplying power to the photovoltaic tracking bracket means not supplying power to the motor of the photovoltaic tracking bracket, but supplying power to the circuit board and the like of the photovoltaic tracking bracket.

[0128] In this embodiment, when the current available power is greater than or equal to 0, the photovoltaic tracking bracket is not driven to rotate, the photovoltaic tracking bracket maintains the current angular position, and the circuit board of the photovoltaic tracking bracket is powered by the auxiliary power supply.

[0129] In this embodiment, when the current available power is less than 0, the auxiliary power supply is controlled to supply power to the photovoltaic tracking bracket, driving the photovoltaic tracking bracket to rotate to the protection position. When the photovoltaic tracking bracket remains in the protection position, the circuit board of the photovoltaic tracking bracket consumes less power.

[0130] In some embodiments, the control method of the photovoltaic tracking bracket further includes:

[0131] When the current remaining power is less than or equal to the protection power threshold, a low power alarm message is output.

[0132] The low-battery alarm message is used to indicate that the remaining power of the auxiliary power supply is low, and the low-battery alarm message may be in the form of voice, indicator light or text display.

[0133] In this embodiment, when the current remaining power is less than or equal to the protection power threshold, a low power alarm message may be output to indicate that the remaining power of the auxiliary power supply is low, and a corresponding battery protection program may be executed.

[0134] In this embodiment, when the current remaining power is less than or equal to the protection power threshold, a low power alarm message is output, which can promptly prompt the conditions that affect the safe operation of the auxiliary power supply so that relevant personnel can take protective measures for the auxiliary power supply in time.

[0135] In some embodiments, the control method of the photovoltaic tracking bracket further includes:

[0136] When the current battery health state of the auxiliary power supply is less than a first battery health state threshold, performing fault warning processing on the auxiliary power supply;

[0137] When the current battery health state of the auxiliary power supply is less than the second battery health state threshold, a fault alarm process is performed on the auxiliary power supply.

[0138] The second battery health state threshold is smaller than the first battery health state threshold, and the first battery health state threshold and the second battery health state threshold are preset values.

[0139] The current battery health state is the battery health state (State of Health, SOH) of the auxiliary power supply at the current moment.

[0140] In this embodiment, when the current battery health state is less than the first battery health state threshold, it indicates that the battery health state of the auxiliary power supply is poor at the current moment, which may affect the safe operation of the auxiliary power supply. Fault warning processing is performed on the auxiliary power supply, and the fault warning processing may include outputting fault warning information, etc.

[0141] In this embodiment, when the current battery health status is less than the second battery health status threshold, it indicates that the battery health status of the auxiliary power supply is very poor or a fault has occurred at the current moment, which has affected the safe operation of the auxiliary power supply, and a fault alarm is performed on the auxiliary power supply. The fault alarm processing may include outputting fault alarm information, stopping the auxiliary power supply from outputting power, etc.

[0142] In this embodiment, when the current battery health status of the auxiliary power supply is less than the first battery health status threshold, the auxiliary power supply is subjected to fault warning processing; when the current battery health status of the auxiliary power supply is less than the second battery health status threshold, the auxiliary power supply is subjected to fault alarm processing. The battery health status of the auxiliary power supply can be monitored and managed in real time, and the reliability and stability of the system can be improved.

[0143] In some embodiments, S110 includes:

[0144] Obtain the current state of charge of the auxiliary power source and the current battery health status of the auxiliary power source;

[0145] The current remaining power is determined based on the current state of charge, the current battery health state, and the rated capacity of the auxiliary power source.

[0146] The current state of charge is the state of charge (SOC) of the auxiliary power supply at the current moment, and the rated capacity is the amount of power that the auxiliary power supply can provide when it is brand new and fully charged.

[0147] In actual implementation, the current state of charge, the current battery health status and the rated capacity can be multiplied to obtain the current remaining power.

[0148] A specific implementation example of obtaining the current remaining power is introduced below.

[0149] Step 1: Determine the SOC of the auxiliary power supply in the initial state. For a new auxiliary power supply, SOC=100%. For a non-new auxiliary power supply, an experimental test of the SOC is required.

[0150] Step 2: During the charging and discharging process of the auxiliary power supply, the charging and discharging current of the auxiliary power supply is monitored and the change value of the SOC is calculated using the ampere-hour integration method:

[0151]

[0152] Among them C nom is the rated capacity of the auxiliary power supply; I(t) is the real-time current of the auxiliary power supply, the positive sign indicates discharge, and the negative sign indicates charge.

[0153] Step 3: Through the experimental test method, the SOH estimation value of the auxiliary power supply at the current moment can be obtained, so as to determine whether the auxiliary power supply needs maintenance or replacement.

[0154] Perform charge and discharge test, record the discharge amount Q of auxiliary power from 100% to 20% each time n f1 , record the discharge amount Q of the auxiliary power supply from 20% to 0% each time n f2 , corresponding to the depth of discharge; record the charge amount Q of the auxiliary power supply from 0% to 100% each time n c1 .

[0155] Repeat the charge and discharge test N times, covering the early, middle and late stages of auxiliary power attenuation, and record the relationship between the number of charge and discharge times and SOH after each operation:

[0156] In the early stage of auxiliary power attenuation, the relationship between the number of discharges and SOH during normal discharge is:

[0157] SOH n =SOH n-1 -f 1 (n)

[0158] The relationship between the number of discharges and SOH during deep discharge is:

[0159] SOH n =SOH n-1 -f 1 s (n)

[0160] The relationship between the number of charge times and SOH during charging is:

[0161] SOH n =SOH n-1 -f 1 c (n)

[0162] In the middle stage of auxiliary power attenuation, the relationship between the number of discharges and SOH during normal discharge is:

[0163] SOH n =SOH n-1 -f 2 (n)

[0164] The relationship between the number of discharges and SOH during deep discharge is:

[0165] SOH n =SOH n-1 -f 2 s (n)

[0166] The relationship between the number of charge times and SOH during charging is:

[0167] SOH n =SOH n-1 -f 2 c (n)

[0168] In the later stage of auxiliary power attenuation, the relationship between the number of discharges and SOH during normal discharge is:

[0169] SOH n =SOH n-1 -f 3 (n)

[0170] The relationship between the number of discharges and SOH during deep discharge is:

[0171] SOH n =SOH n-1 -f 3 s (n)

[0172] The relationship between the number of charge times and SOH during charging is:

[0173] SOH n =SOH n-1 -f 3 c (n)

[0174] Where n represents the number of charge and discharge times, f, f s and f c They are functions simulated according to charge and discharge tests.

[0175] The current remaining power is Q = C nom ×SOH×SOC, where SOH is the current battery health state and SOC is the current state of charge.

[0176] In the related technology, the battery serves as an auxiliary power supply to provide power to drive the tracking axis to rotate when the self-powered system is unable to generate electricity or is unable to support the rotation of the tracking axis in a low power generation state. The battery's charge and health when the self-powered system is unable to generate electricity or is in a low power generation state play a key role in the safe operation of the entire photovoltaic tracking system.

[0177] However, for photovoltaic tracking systems, it is difficult to collect a large amount of external data, such as the battery's usage history, aging degree, and temperature, and it is difficult to calculate SOH through data-driven models.

[0178] In the embodiment of the present application, through charge and discharge test simulation, the relationship between the number of charge and discharge times and SOH during conventional discharge, deep discharge and charging corresponding to the early, middle and late stages of auxiliary power attenuation is obtained, and a corresponding function is established. The SOH can be calculated according to the number of charges or discharges through the established function, thereby providing a data basis for the safe operation of the auxiliary power supply.

[0179] A specific embodiment of the control method of the photovoltaic tracking bracket is introduced below.

[0180] In this embodiment, at night, the photovoltaic tracking bracket is in a protection position and does not rotate. Only the circuit board consumes a little power. When the auxiliary power supply is discharged, the SOC and SOH of the auxiliary power supply at the current moment are calculated in real time, and the current remaining power is calculated: Q = C nom ×SOH×SOC.

[0181] Step 1: When the self-powered system of the photovoltaic tracking bracket, that is, the photovoltaic module has power output, determine the current available power QQ c - Is Q0 greater than 0, where Q c is the maximum rotation power consumption, and Q0 is the protection power threshold.

[0182] Step 2: On QQ c -When Q0 is greater than or equal to 0, determine whether the current output power of the photovoltaic module can drive the motor of the photovoltaic tracking bracket to rotate. If so, control the photovoltaic module to supply power to the photovoltaic tracking bracket to drive the photovoltaic tracking bracket to rotate, and the auxiliary power supply is not charged; if not, the photovoltaic module and the auxiliary power supply together supply power to the photovoltaic tracking bracket to drive the photovoltaic tracking bracket to rotate, and calculate the SOC and SOH of the auxiliary power supply at the current moment and the current remaining power Q in real time.

[0183] Step 3: On QQ c-When Q0 is less than 0, the photovoltaic module gives priority to charging the auxiliary power supply, and calculates whether the output power of the photovoltaic module other than charging the auxiliary power supply can drive the motor of the photovoltaic tracking bracket to rotate. If it can, the photovoltaic module is used to power the photovoltaic tracking bracket to drive the photovoltaic tracking bracket to rotate, and the auxiliary power supply continues to charge; if not, the photovoltaic tracking bracket does not rotate, and calculates the SOC and SOH of the auxiliary power supply at the current moment and the current remaining power Q in real time until Q is greater than or equal to 0, and charging stops.

[0184] Step 4: When it is determined that the photovoltaic module has no output, determine QQ c - Is Q0 greater than 0? If QQ c -Q0 is greater than or equal to 0, the photovoltaic tracking bracket does not rotate; if QQ c -Q0 is less than 0, the auxiliary power supply is used to power the photovoltaic tracking bracket, driving the photovoltaic tracking bracket to rotate to the protection position, and when Q is less than or equal to Q0, the low power alarm information is output, and the system prompts a low battery alarm.

[0185] Step 5: When the SOH is less than the set first battery health state threshold SOH1, the system starts the battery fault warning function and performs fault warning processing on the auxiliary power supply; if the SOH is less than the set second battery health state threshold SOH2, the system starts the battery fault alarm function and performs fault alarm processing on the auxiliary power supply.

[0186] The control method of the photovoltaic tracking bracket provided in the embodiment of the present application can be executed by the control device of the photovoltaic tracking bracket. In the embodiment of the present application, the control device of the photovoltaic tracking bracket performing the control method of the photovoltaic tracking bracket is used as an example to illustrate the control device of the photovoltaic tracking bracket provided in the embodiment of the present application.

[0187] The embodiment of the present application also provides a control device for a photovoltaic tracking bracket.

[0188] The photovoltaic module is installed on the photovoltaic tracking bracket, the photovoltaic tracking bracket is electrically connected to the photovoltaic module and the auxiliary power supply, the photovoltaic tracking bracket, the photovoltaic module and the auxiliary power supply constitute a photovoltaic control system, and the control device of the photovoltaic tracking bracket is connected to the photovoltaic control system.

[0189] like Figure 4 As shown, the control device of the photovoltaic tracking bracket includes:

[0190] The acquisition module 410 is used to acquire the maximum rotation power consumption of the photovoltaic tracking bracket and the current remaining power of the auxiliary power supply, wherein the maximum rotation power consumption is the power consumption of the photovoltaic tracking bracket when the photovoltaic tracking bracket rotates from the limit position of the photovoltaic tracking bracket to the protection position of the photovoltaic tracking bracket;

[0191] A first processing module 420, configured to determine the current available power of the auxiliary power source based on the current remaining power, the maximum rotation power consumption and the protection power threshold of the auxiliary power source;

[0192] The second processing module 430 is used to control at least one of the photovoltaic assembly and the auxiliary power supply to supply power to the photovoltaic tracking bracket based on the current output power and the current available power of the photovoltaic assembly, so as to drive the photovoltaic tracking bracket to rotate.

[0193] According to the control device of the photovoltaic tracking bracket provided in the embodiment of the present application, the current available power of the auxiliary power supply is calculated in real time through the current remaining power of the auxiliary power supply, the maximum rotational power consumption of the photovoltaic tracking bracket and the protection power threshold of the auxiliary power supply. The current available power can represent the amount of power that the auxiliary power supply can output for use while ensuring the safe operation of the auxiliary power supply. According to the current output power of the photovoltaic module and the current available power of the auxiliary power supply, the auxiliary power supply can be controlled to supply power to the photovoltaic tracking bracket while ensuring the safe operation of the auxiliary power supply, thereby ensuring the safe operation of the photovoltaic system.

[0194] In some embodiments, the second processing module 430 is used to control the photovoltaic assembly to power the photovoltaic tracking bracket, or control the photovoltaic assembly and the auxiliary power supply to power the photovoltaic tracking bracket based on the current output power and the current available power when the current output power is greater than 0.

[0195] In some embodiments, the second processing module 430 is used to determine whether the current output power is greater than or equal to the required power of the photovoltaic tracking bracket when the current available power is greater than or equal to 0;

[0196] If so, the photovoltaic components are controlled to supply power to the photovoltaic tracking bracket;

[0197] If not, the photovoltaic components and auxiliary power supply are controlled to supply power to the photovoltaic tracking bracket.

[0198] In some embodiments, the second processing module 430 is used to control the photovoltaic assembly to supply power to the auxiliary power source when the current available power is less than 0.

[0199] In some embodiments, the second processing module 430 is used to determine the second output sub-power of the photovoltaic component based on the current output power and the first output sub-power of the photovoltaic component when the current available power is less than 0, where the first output sub-power is the power of the photovoltaic component to supply power to the auxiliary power supply;

[0200] When the second output sub-power is greater than or equal to the required power of the photovoltaic tracking bracket, the photovoltaic assembly is controlled to supply power to the photovoltaic tracking bracket to drive the photovoltaic tracking bracket to rotate;

[0201] When the second output sub-power is less than the required power, the photovoltaic tracking bracket is not driven to rotate.

[0202] In some embodiments, the second processing module 430 is used to control the auxiliary power supply to supply power to the photovoltaic tracking bracket to drive the photovoltaic tracking bracket to rotate based on the current available power when the current output power is equal to 0.

[0203] In some embodiments, the second processing module 430 is used to determine whether the current available power is greater than or equal to 0;

[0204] If so, the photovoltaic tracking bracket will not be driven to rotate;

[0205] If not, control the auxiliary power supply to supply power to the photovoltaic tracking bracket, and drive the photovoltaic tracking bracket to rotate to the protection position.

[0206] In some embodiments, the second processing module 430 is further configured to output a low-battery alarm message when the current remaining battery power is less than or equal to a protection battery power threshold.

[0207] In some embodiments, the second processing module 430 is further configured to perform fault warning processing on the auxiliary power supply when the current battery health state of the auxiliary power supply is less than the first battery health state threshold;

[0208] When the current battery health state of the auxiliary power supply is less than the second battery health state threshold, performing fault alarm processing on the auxiliary power supply;

[0209] The second battery state of health threshold is less than the first battery state of health threshold.

[0210] In some embodiments, the acquisition module 410 is used to obtain the current state of charge of the auxiliary power source and the current battery health state of the auxiliary power source;

[0211] The current remaining power is determined based on the current state of charge, the current battery health state, and the rated capacity of the auxiliary power source.

[0212] The control device of the photovoltaic tracking bracket in the embodiment of the present application can be an electronic device, or a component in the electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal, or other devices other than a terminal. For example, the electronic device can be a notebook computer, an ultra-mobile personal computer (UMPC), etc., or a server, a personal computer (PC), etc., which is not specifically limited in the embodiment of the present application.

[0213] The control device of the photovoltaic tracking bracket in the embodiment of the present application may be a device having an operating system.

[0214] The control device of the photovoltaic tracking bracket provided in the embodiment of the present application can achieve Figures 1 to 3 To avoid repetition, the various processes implemented by the method embodiment are not described here.

[0215] The embodiment of the present application also provides a photovoltaic system.

[0216] The photovoltaic system includes at least one photovoltaic component and a control device of the photovoltaic tracking bracket as described above.

[0217] Among them, the photovoltaic module is installed on the photovoltaic tracking bracket, the photovoltaic tracking bracket is electrically connected to the photovoltaic module and the auxiliary power supply, and the photovoltaic tracking bracket, the photovoltaic module and the auxiliary power supply are electrically connected to form a photovoltaic control system.

[0218] The control device is connected to the photovoltaic assembly and the auxiliary power supply, and is used to control at least one of the photovoltaic assembly and the auxiliary power supply to supply power to the photovoltaic tracking bracket, thereby driving the photovoltaic tracking bracket to rotate.

[0219] According to the photovoltaic system provided in the embodiment of the present application, the current available power of the auxiliary power supply is calculated in real time through the current remaining power of the auxiliary power supply, the maximum rotational power consumption of the photovoltaic tracking bracket and the protection power threshold of the auxiliary power supply. The current available power can represent the amount of power that the auxiliary power supply can output for use while ensuring the safe operation of the auxiliary power supply. According to the current output power of the photovoltaic module and the current available power of the auxiliary power supply, the auxiliary power supply can be controlled to supply power to the photovoltaic tracking bracket while ensuring the safe operation of the auxiliary power supply, thereby ensuring the safe operation of the photovoltaic system.

[0220] In some embodiments, Figure 5 As shown, an embodiment of the present application also provides an electronic device 500, including a processor 501, a memory 502, and a computer program stored in the memory 502 and executable on the processor 501. When the program is executed by the processor 501, each process of the control method embodiment of the above-mentioned photovoltaic tracking bracket is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be described here.

[0221] It should be noted that the electronic devices in the embodiments of the present application include the mobile electronic devices and non-mobile electronic devices mentioned above.

[0222] An embodiment of the present application also provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the various processes of the above-mentioned photovoltaic tracking bracket control method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0223] The processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk.

[0224] An embodiment of the present application also provides a computer program product, including a computer program, which implements the control method of the above-mentioned photovoltaic tracking bracket when executed by a processor.

[0225] The processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk.

[0226] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned photovoltaic tracking bracket control method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0227] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0228] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0229] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, a disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0230] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

[0231] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0232] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A control method for a photovoltaic tracking bracket, characterized in that: The photovoltaic assembly is installed on a photovoltaic tracking bracket. The photovoltaic tracking bracket, the photovoltaic assembly and an auxiliary power supply constitute a photovoltaic control system. The method is applied to the photovoltaic control system. The method includes: S110, obtaining the maximum rotation power consumption of the photovoltaic tracking bracket and the current remaining power of the auxiliary power supply, wherein the maximum rotation power consumption is the power consumption of the photovoltaic tracking bracket when rotating from the limit position of the photovoltaic tracking bracket to the protection position of the photovoltaic tracking bracket; S120, determining the current available power of the auxiliary power supply based on the current remaining power, the maximum rotation power consumption and the protection power threshold of the auxiliary power supply; S130: Based on the current output power of the photovoltaic assembly and the current available power, control at least one of the photovoltaic assembly and the auxiliary power supply to supply power to the photovoltaic tracking bracket to drive the photovoltaic tracking bracket to rotate.

2. The control method of the photovoltaic tracking bracket according to claim 1, characterized in that: The S130 includes: S131. When the current output power is greater than 0, based on the current output power and the current available power, control the photovoltaic assembly to supply power to the photovoltaic tracking bracket, or control the photovoltaic assembly and the auxiliary power supply to supply power to the photovoltaic tracking bracket.

3. The control method of the photovoltaic tracking bracket according to claim 2, characterized in that: The S131 includes: When the current available power is greater than or equal to 0, determining whether the current output power is greater than or equal to the required power of the photovoltaic tracking bracket; If yes, the photovoltaic assembly is controlled to supply power to the photovoltaic tracking bracket.

4. The control method of the photovoltaic tracking bracket according to claim 2, characterized in that: The S131 includes: When the current available power is greater than or equal to 0, determining whether the current output power is greater than or equal to the required power of the photovoltaic tracking bracket; If not, the photovoltaic assembly and the auxiliary power supply are controlled to supply power to the photovoltaic tracking bracket.

5. The control method of the photovoltaic tracking bracket according to claim 2, characterized in that: The S131 includes: When the currently available power is less than 0, the photovoltaic assembly is controlled to supply power to the auxiliary power supply.

6. The control method of the photovoltaic tracking bracket according to claim 2, characterized in that: The S131 includes: When the current available power is less than 0, determining the second output sub-power of the photovoltaic assembly based on the current output power and the first output sub-power of the photovoltaic assembly, wherein the first output sub-power is the power of the photovoltaic assembly supplying power to the auxiliary power supply; When the second output sub-power is greater than or equal to the required power of the photovoltaic tracking bracket, the photovoltaic assembly is controlled to supply power to the photovoltaic tracking bracket to drive the photovoltaic tracking bracket to rotate.

7. The control method of the photovoltaic tracking bracket according to claim 2, characterized in that: The S131 includes: When the current available power is less than 0, determining the second output sub-power of the photovoltaic assembly based on the current output power and the first output sub-power of the photovoltaic assembly, wherein the first output sub-power is the power of the photovoltaic assembly supplying power to the auxiliary power supply; When the second output sub-power is less than the required power, the photovoltaic tracking bracket is not driven to rotate.

8. The control method of the photovoltaic tracking bracket according to claim 1, characterized in that: The S130 includes: S132: When the current output power is equal to 0, based on the current available power, control the auxiliary power supply to supply power to the photovoltaic tracking bracket to drive the photovoltaic tracking bracket to rotate.

9. The control method of the photovoltaic tracking bracket according to claim 8, characterized in that: The S132 includes: Determine whether the current available power is greater than or equal to 0; If yes, the photovoltaic tracking bracket is not driven to rotate; If not, the auxiliary power supply is controlled to supply power to the photovoltaic tracking bracket, so as to drive the photovoltaic tracking bracket to rotate to the protection position.

10. The control method of the photovoltaic tracking bracket according to any one of claims 1 to 9, characterized in that: The method further comprises: When the current remaining power is less than or equal to the protection power threshold, a low power alarm message is output.

11. The control method of the photovoltaic tracking bracket according to any one of claims 1 to 9, characterized in that: The method further comprises: When the current battery health state of the auxiliary power supply is less than a first battery health state threshold, performing fault warning processing on the auxiliary power supply; When the current battery health state of the auxiliary power supply is less than a second battery health state threshold, performing fault alarm processing on the auxiliary power supply; The second battery state of health threshold is less than the first battery state of health threshold.

12. The control method of the photovoltaic tracking bracket according to any one of claims 1 to 9, characterized in that: The S110 includes: Acquire a current state of charge of the auxiliary power source and a current battery health state of the auxiliary power source; The current remaining power is determined based on the current state of charge, the current battery health state, and a rated capacity of the auxiliary power source.

13. A control device for a photovoltaic tracking bracket, characterized in that: The photovoltaic assembly is installed on a photovoltaic tracking bracket. The photovoltaic tracking bracket, the photovoltaic assembly and the auxiliary power supply constitute a photovoltaic control system. The device is connected to the photovoltaic control system. The device includes: An acquisition module, used to acquire the maximum rotation power consumption of the photovoltaic tracking bracket and the current remaining power of the auxiliary power supply; A first processing module, configured to determine a current available power of the auxiliary power supply based on the current remaining power, the maximum rotation power consumption and a protection power threshold of the auxiliary power supply; The second processing module is used to control at least one of the photovoltaic assembly and the auxiliary power supply to supply power to the photovoltaic tracking bracket based on the current output power of the photovoltaic assembly and the current available power, so as to drive the photovoltaic tracking bracket to rotate.

14. The control device of the photovoltaic tracking bracket according to claim 13, characterized in that: The second processing module is used to control the photovoltaic component to power the photovoltaic tracking bracket, or control the photovoltaic component and the auxiliary power supply to power the photovoltaic tracking bracket based on the current output power and the current available power when the current output power is greater than 0.

15. The control device of the photovoltaic tracking bracket according to claim 13, characterized in that: The second processing module is used to control the auxiliary power supply to supply power to the photovoltaic tracking bracket and drive the photovoltaic tracking bracket to rotate based on the current available power when the current output power is equal to 0.

16. A photovoltaic system, characterized in that: include: At least one photovoltaic module, wherein the photovoltaic module is mounted on a photovoltaic tracking bracket, and the photovoltaic tracking bracket, the photovoltaic module and an auxiliary power supply constitute a photovoltaic control system; The control device of the photovoltaic tracking bracket as described in any one of claims 13 to 15, wherein the control device is connected to the photovoltaic component and the auxiliary power supply, and the control device is used to control at least one of the photovoltaic component and the auxiliary power supply to supply power to the photovoltaic tracking bracket to drive the photovoltaic tracking bracket to rotate.

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