Control system and control method for a photovoltaic assembly

Abstract

The application discloses a control system and a control method of a photovoltaic module. The control system of the photovoltaic module comprises at least two driving modules, a control module electrically connected with the driving modules, and at least two of a support torsion detection module, a first detection module and a second detection module. The first detection module comprises a first detection unit corresponding to the photovoltaic module and outputting a first feedback signal. The second detection module comprises a second detection unit corresponding to the photovoltaic module and outputting a second feedback signal. The first feedback signal and the second feedback signal are used for feeding back the inclination angle of the corresponding photovoltaic module. The control module controls the driving module to operate according to multiple signals, so as to avoid the inclination angle difference of the photovoltaic module caused by the inaccurate inclination angle of the photovoltaic module fed back by a single feedback signal when the driving module is controlled to operate according to the single feedback signal, and further cause the support to be broken, thereby reducing the risk of the support damage.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the field of photovoltaic technology, and particularly to a control system and a control method of a photovoltaic module. BACKGROUND

[0002] The photovoltaic industry is a sunrise industry based on semiconductor technology and new energy demand, which will play an important role in China's energy structure in the future.

[0003] The control system of the photovoltaic module currently includes a detection module that can only feed back one kind of feedback signal of the tilt angle information of the corresponding photovoltaic module. This single feedback signal mode is prone to cause the tilt angles of different photovoltaic modules to be different when the tilt angle information corresponding to the collected single feedback signal is inaccurate, resulting in the twisting of the support bracket supporting the photovoltaic module and the breakage of the support bracket. SUMMARY

[0004] The present application provides a control system and a control method of a photovoltaic module to reduce the probability of the twisting of the support bracket and thus reduce the risk of damage to the support bracket.

[0005] In a first aspect, the present application provides a control system of a photovoltaic module, which includes at least two driving modules, a control module electrically connected with the driving modules, and at least two of a support bracket twisting detection module, a first detection module, and a second detection module. The first detection module includes a first detection unit corresponding to a photovoltaic module and outputting a first feedback signal. The second detection module includes a second detection unit corresponding to the photovoltaic module and outputting a second feedback signal. The first feedback signal and the second feedback signal are used to feed back the tilt angle of the corresponding photovoltaic module.

[0006] The photovoltaic module corresponding to the driving module is arranged at different positions of the support bracket, and the driving module is mechanically connected with the support bracket. The first detection module is electrically connected with the control module, the second detection module is electrically connected with the control module, and the support bracket twisting detection module is electrically connected with the control module.

[0007] The control module is used to control the operation of each driving module according to at least two of the set of first feedback signals, the set of second feedback signals, and the twisting result signal sent by the support bracket twisting detection module to the control module, so that the twisting angle of the support bracket is less than a set angle.

[0008] The set of first feedback signals includes the first feedback signal output by each first detection unit, the set of second feedback signals includes the second feedback signal output by each second detection unit, and the twisting result signal includes a support bracket normal signal and a support bracket twisting signal.

[0009] Optionally, the first detection module is an inclination detection module, and the inclination detection module is arranged on the support; and the second detection module is a Hall detection module, and the Hall detection module is arranged in the driving module.

[0010] Optionally, the control module comprises a controller arranged in one-to-one correspondence with the driving module, wherein any one of the controllers is a master controller, and the rest of the controllers are slave controllers; the master controller is electrically connected with each of the slave controllers; and the master controller is configured to control the corresponding driving module to run or stop running through the slave controllers.

[0011] Optionally, the control system of the photovoltaic module comprises the first detection module and the second detection module.

[0012] The master controller is configured to calculate a first running angle according to a first feedback signal output by a first detection unit corresponding to each photovoltaic module and target angle information, to calculate a second running angle according to a second feedback signal output by a second detection unit corresponding to each photovoltaic module and the target angle information, and to determine, when a difference between each first running angle and a corresponding second running angle is less than or equal to a set angle threshold, to send a running signal to the corresponding slave controller according to the first running angle or the second running angle corresponding to each slave controller to control a running state of the corresponding driving module, and to control a running state of the corresponding driving module according to the first running angle corresponding to the master controller, wherein the running state comprises continuous running and stop running.

[0013] Optionally, the master controller is further configured to, when a difference between at least one first running angle and a corresponding second running angle is greater than the set angle threshold, send an alarm signal to the slave controllers to control the driving module to stop running, and to control the corresponding driving module corresponding to the master controller to stop running.

[0014] Optionally, the support torsion detection module comprises a laser emitter and a laser receiver, the laser emitter and the laser receiver are arranged on the support, the photovoltaic module is arranged between the laser emitter and the laser receiver, the laser emitter is electrically connected with an adjacent slave controller, the laser receiver is electrically connected with the master controller, the slave controller is configured to control the laser emitter to send a detection signal, the laser receiver is configured to generate a normal support signal when the detection signal is received, and to generate a support torsion signal when the detection signal is not received.

[0015] Optionally, the control system of the photovoltaic module comprises the support torsion detection module and the first detection module.

[0016] The main controller is configured to determine, when the support normal signal is received from the support torsion detection module within a first set time, a first operation angle according to the first feedback signal output by each first detection unit corresponding to each photovoltaic module and target angle information, and to send an operation signal to each slave controller corresponding to the first operation angle to control the operation state of the drive module corresponding to the slave controller and to control the operation state of the drive module corresponding to the main controller, and to determine, when the support torsion signal is received from the support torsion detection module within the first set time, to send an alarm signal to each slave controller to control the drive module corresponding to the slave controller to stop operating and control the drive module corresponding to the main controller to stop operating.

[0017] Optionally, the main controller is further configured to assign an address to the slave controller after receiving the inquiry instruction sent by the slave controller.

[0018] Optionally, the slave controller is configured to control the connected drive module to stop operating when the operation signal is not received within a second set time, or the slave controller is configured to control the connected drive module to stop operating when the alarm signal is received from the main controller.

[0019] Optionally, two adjacent photovoltaic modules are arranged on the support at a set interval, and two adjacent drive modules are arranged on the support at the set interval to drive the support at the arranged position to rotate to drive the photovoltaic module to rotate.

[0020] In a second aspect, the embodiments of the present application further provide a control method of a photovoltaic module, which is used to control the control system of the photovoltaic module in any one of the first aspect, and the control method of the photovoltaic module comprises:

[0021] controlling the operation of each drive module according to at least two of the set of first feedback signals obtained through each first detection unit, the set of second feedback signals obtained through each second detection unit, and the torsion result signal sent by the support torsion detection module, so that the torsion angle of the support is less than a set angle;

[0022] The set of first feedback signals comprises the first feedback signals output by each first detection unit, the set of second feedback signals comprises the second feedback signals output by each second detection unit, the torsion result signal comprises a support normal signal and a support torsion signal, and the first feedback signal and the second feedback signal are both used to feedback the inclination angle of the corresponding photovoltaic module.

[0023] The application provides a control system and a control method of a photovoltaic module, the control system of the photovoltaic module comprises at least two driving modules, a control module electrically connected with the driving modules, and at least two of a support torsion detection module, a first detection module and a second detection module, wherein the first detection module comprises a first detection unit corresponding to the photovoltaic module and outputting a first feedback signal, and the second detection module comprises a second detection unit corresponding to the photovoltaic module and outputting a second feedback signal; wherein the first feedback signal and the second feedback signal are both used for feeding back the inclination angle of the corresponding photovoltaic module; the photovoltaic module corresponding to the driving module is arranged at different positions of a support, and the driving module is mechanically connected with the support; the first detection module is electrically connected with the control module, the second detection module is electrically connected with the control module, and the support torsion detection module is electrically connected with the control module; the control module is used for controlling the operation of each driving module according to at least two of the set of the first feedback signals, the set of the second feedback signals and the torsion result signal sent by the support torsion detection module to the control module, so that the torsion angle of the support is less than a set angle. The control system of the photovoltaic module provided in the embodiment of the application comprises at least two of the support torsion detection module, the first detection module and the second detection module, so that the control module can control the operation of each driving module according to at least two of the multiple first feedback signals output by the first detection module, the multiple second feedback signals output by the second detection module and the signal sent by the support torsion detection module to the control module, the control module controls the operation of the driving module according to the multiple signals, avoids the different inclination angles of the photovoltaic module caused by the inaccurate inclination angle of the photovoltaic module fed back by the single feedback signal when the driving module is controlled to operate according to the single feedback signal, and further causes the support to be broken. The control module controls the operation of the driving module according to at least two signals, which can ensure the accuracy when the photovoltaic module is driven to rotate by the driving module, ensure that the torsion angle of the support is less than the set angle, further reduce the probability of the torsion of the support, and reduce the risk of damage of the support. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structural schematic diagram of a control system of a photovoltaic module provided in the embodiment of the application;

[0025] Figure 2 is a structural schematic diagram of another control system of a photovoltaic module provided in the embodiment of the application;

[0026] Figure 3 is a structural schematic diagram of another control system of a photovoltaic module provided in the embodiment of the application;

[0027] Figure 4 is a structural schematic diagram of another control system of a photovoltaic module provided in the embodiment of the application;

[0028] Figure 5 is a flow chart of a control method of a photovoltaic module provided by an embodiment of the present application. DETAILED DESCRIPTION

[0029] The present application will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are intended to be merely illustrative of the present application and not in limitation thereof. It should also be noted that, for the purpose of description, only the parts related to the present application are shown in the drawings rather than all the parts.

[0030] Figure 1 is a structural schematic diagram of a control system of a photovoltaic module provided by an embodiment of the present application. Referring to Figure 1 , the control system of the photovoltaic module comprises at least two driving modules 10, a control module 11 electrically connected with the driving modules 10, and at least two of a support torsion detection module 12, a first detection module and a second detection module, wherein the first detection module comprises first detection units 141 corresponding to the photovoltaic modules 13 and outputting first feedback signals, and the second detection module comprises second detection units corresponding to the photovoltaic modules 13 and outputting second feedback signals; wherein the first feedback signals and the second feedback signals are both used to feedback the tilt angles of the corresponding photovoltaic modules 13.

[0031] The photovoltaic modules 13 corresponding to the driving modules 10 are arranged at different positions of a support 15, and the driving modules 10 are mechanically connected with the support 15; the first detection module is electrically connected with the control module 11, the second detection module is electrically connected with the control module 11, and the support torsion detection module 12 is electrically connected with the control module 11.

[0032] The control module 11 is used to control the operation of each driving module 10 according to at least two of the set of first feedback signals, the set of second feedback signals and the torsion result signal sent by the support torsion detection module 12 to the control module 11, so that the torsion angle of the support 15 is less than a set angle.

[0033] Wherein, the set of first feedback signals comprises the first feedback signals output by each first detection unit 141, the set of second feedback signals comprises the second feedback signals output by each second detection unit, and the torsion result signal comprises a support normal signal and a support torsion signal.

[0034] The photovoltaic module 13 is arranged on the support 15, and each photovoltaic module 13 is arranged at a position corresponding to a driving module 10. Different photovoltaic modules 13 are arranged at any positions on the same surface of the support, and it is only required that the arrangement positions of different photovoltaic modules 13 are different. The driving module 10 comprises a motor, and the driving module 10 drives the rotation of the support 15 at the arrangement position of the driving module 10 to drive the rotation of the photovoltaic module 13. Each first detection unit 141 of the first detection module is electrically connected to the control module 11, and each second detection unit of the second detection module is also electrically connected to the control module 11. For example, the second detection unit (not shown in the figure) can be arranged in the driving module 10. The support torsion detection module 12 is used to detect whether the support 15 is twisted. When the support torsion detection module 12 detects that the torsion angle of the support 15 is greater than a set angle, a support torsion signal is generated. When the support torsion detection module 12 detects that the torsion angle of the support 15 is less than or equal to the set angle, a support normal signal is generated. For example, the set angle can be 0.5°. When the support torsion detection module 12 detects that the torsion angle of the support 15 is less than or equal to 0.5°, it is determined that the support 15 is normal and not twisted, and the support normal signal is generated. When the support torsion detection module 12 detects that the torsion angle of the support 15 is greater than 0.5°, it is determined that the support 15 is abnormal and twisted, and the support torsion signal is generated. When the control system of the photovoltaic module comprises the support torsion detection module 12, if the control module 11 receives the support torsion signal uploaded by the support torsion detection module 12, the control module 11 controls each driving module 10 to stop running, so as to avoid increasing the torsion degree of the support 15.

[0035] The photovoltaic module 13 is used to absorb light energy and convert the light energy into electric energy, and therefore the inclination angles of the photovoltaic module 13 at different moments are different, so that the light energy can be maximally absorbed. The control module 11 needs to rotate all the photovoltaic modules 13 to the target inclination angle corresponding to the current moment according to different moments. If the inclination angles of the photovoltaic modules 13 are different, the support 15 is easily twisted. The control module 11 can control the running of each driving module 10 according to the first feedback signal or the second feedback signal, so as to rotate the photovoltaic module 13 to the target angle. At the same moment, the target angle of each photovoltaic module 13 is the same value, the control module 11 controls each photovoltaic module 13 to rotate to the target angle, so that the torsion angle of the support 15 is 0°, and then the torsion angle of the support can be less than the set angle.

[0036] Compared with the prior art, the control module 11 only controls the rotation of the photovoltaic module 13 according to a single feedback signal, which is easy to cause the inclination angles of different photovoltaic modules 13 to be different when the inclination angle information corresponding to the collected single feedback signal is inaccurate, thereby causing the support bracket 15 supporting the photovoltaic module to be twisted. The control system of the photovoltaic module of the embodiment includes at least two of the support bracket twist detection module 12, the first detection module and the second detection module, so that the control module 11 can control the operation of each drive module 10 according to at least two of the first feedback signal, the second feedback signal and the twist result signal sent by the support bracket twist detection module 12 to the control module 11. The control module 11 controls the operation of the drive module 10 according to at least two signals, which can ensure the accuracy when the photovoltaic module 13 is driven to rotate by the drive module 10, ensure that the twist angle of the support bracket 15 is less than the set angle, and thereby reduce the probability of the support bracket 15 being twisted and the risk of the support bracket 15 being damaged. In the embodiment, each photovoltaic module 13 corresponds to a drive module 10, and the plurality of drive modules 10 operate at the same time, which provides more sufficient power for the control system of the photovoltaic module.

[0037] Optionally, the first detection module is an inclination angle detection module, and the inclination angle detection module is arranged on the support bracket. The second detection module is a Hall detection module, and the Hall detection module is arranged in the drive module.

[0038] The first detection unit included in the inclination angle detection module is used to obtain the inclination angle of the support bracket at the setting position of the corresponding photovoltaic module. The inclination angle of the photovoltaic module is the same as the inclination angle of the support bracket at the setting position of the photovoltaic module. Therefore, the inclination angle of the support bracket obtained by the first detection unit is the inclination angle of the corresponding photovoltaic module, and the first feedback signal is an inclination angle signal. The second detection unit included in the Hall detection module is used to obtain the position information (angle information) of the motor in the corresponding drive module, and then determine the inclination angle of the corresponding photovoltaic module through the position information of the motor, that is, the second feedback signal can feedback the inclination angle of the corresponding photovoltaic module.

[0039] With reference to the above Figure 1 Optionally, the two adjacent photovoltaic modules 13 are arranged on the support bracket 15 at a set interval, and the two adjacent drive modules 10 are arranged on the support bracket 15 at a set interval and are used to drive the support bracket 15 at the setting position to rotate to drive the photovoltaic module 13 to rotate.

[0040] The photovoltaic modules 13 are evenly arranged on the support 15, so that the driving modules 10 are evenly arranged on the support 15. The arrangement position of the driving modules 10 affects the mechanical load of the corresponding driving module 10. The physical parameters of the same components in each driving module 10 are usually consistent, and the mechanical load borne by each driving module 10 should be as consistent as possible. In this embodiment, the distance between any two adjacent driving modules 10 is set as a set interval, that is, the set interval is fixed, which is beneficial to make the mechanical load borne by each of the plurality of driving modules 10 as consistent as possible, thereby being beneficial to guarantee the service life of each driving module 10 and preventing the support 15 from being damaged.

[0041] Figure 2 Another structural schematic diagram of a photovoltaic module control system provided by the embodiment of the application is shown in FIG. 4. Figure 2 Optionally, the control module 11 comprises a controller arranged in one-to-one correspondence with the driving modules 10. Any one of the controllers is a master controller 111, and the rest of the controllers are slave controllers 112. The master controller 111 is electrically connected with each of the slave controllers 112. The master controller 111 is configured to control the corresponding driving module 10 to run or stop running through the slave controllers 112.

[0042] Optionally, the support torsion detection module 12 is electrically connected with the master controller 111 and any one of the slave controllers 112.

[0043] The slave controller 112 is configured to acquire the first feedback signal or the second feedback signal of the corresponding photovoltaic module through the first detection unit 141 or the second detection unit and transmit the first feedback signal or the second feedback signal to the master controller 111. The master controller 111 can acquire the first feedback signal and the second feedback signal of the corresponding photovoltaic module 13 through the corresponding first detection unit 141 and the second detection unit. The master controller 111 analyzes, calculates, etc. at least two of the first feedback signal, the second feedback signal, and the signal sent by the support torsion detection module 12, generates a control instruction for each driving module 10, directly controls the corresponding driving module 10 of the master controller 111 to run or stop running, and sends the control instruction to the corresponding slave controller 112 through the slave controller 112 to control each driving module 10 to run or stop running. In this embodiment, the control module 11 comprises a plurality of controllers. The master controller 111 and each of the slave controllers 112 independently control each of the driving modules 10, thereby reducing the dependence on the master controller 111.

[0044] Figure 3 Another structural schematic diagram of a photovoltaic module control system provided by the embodiment of the application is shown in FIG. 4. Figure 3 Optionally, the photovoltaic module control system comprises a first detection module and a second detection module.

[0045] The main controller 111 is configured to calculate the first operation angle according to the first feedback signal output by the first detection unit 141 corresponding to each photovoltaic module 13 and the target angle information, calculate the second operation angle according to the second feedback signal output by the second detection unit corresponding to each photovoltaic module 13 and the target angle information, and further determine, when the difference between each first operation angle and the corresponding second operation angle is less than or equal to a set angle threshold, to send an operation signal to the corresponding slave controller 112 according to the first operation angle or the second operation angle corresponding to each slave controller to control the operation state of the corresponding driving module, and to control the operation state of the corresponding driving module according to the first operation angle corresponding to itself, the operation state including continuous operation and stop operation.

[0046] In the embodiment, the control system of the photovoltaic module includes the first detection module and the second detection module, and does not include the support torsion detection module 12. The first feedback signal is the actual inclination angle of the photovoltaic module 13 at the current time, the target angle information is the target inclination angle of the photovoltaic module 13 at the current time, and the first operation angle is the angle that the motor in the corresponding driving module 10 should rotate when the photovoltaic module 13 rotates from the actual inclination angle to the target inclination angle. The second feedback signal is the actual inclination angle of the photovoltaic module 13 at the current time, the target angle information is the target inclination angle of the photovoltaic module 13 at the current time, and the second operation angle is the angle that the motor in the corresponding driving module 10 should rotate when the photovoltaic module 13 rotates from the actual inclination angle to the target inclination angle. The first operation angle and the second operation angle corresponding to each photovoltaic module 13 are the angles that the motor in the corresponding driving module 10 should rotate when the photovoltaic module 13 rotates to the target inclination angle. If the first detection module and the second detection module are both working normally and the first feedback signal and the second feedback signal obtained are correct, the first operation angle and the second operation angle should be equal within the error range, that is, when the difference between each first operation angle and the corresponding second operation angle is less than or equal to the set angle threshold, it is indicated that all the first feedback signals and the second feedback signals obtained are normal, and the operation state of the driving module 10 can be controlled according to the first operation angle calculated based on the first feedback signal or the second operation angle calculated based on the second feedback signal.

[0047] With reference to Figure 3 Optionally, the main controller 111 is further configured to determine, when the difference between at least one first operation angle and the corresponding second operation angle is greater than the set angle threshold, to send an alarm signal to the slave controller 112 to control the driving module 10 to stop operation, and to control the corresponding driving module 10 to stop operation.

[0048] When the difference between the at least one first operating angle and the corresponding second operating angle is greater than the set angle threshold, it indicates that the at least one first detection unit or the second detection unit has an error when acquiring the first feedback signal or the second feedback signal, at this time, the main controller 111 directly controls the corresponding drive module 10 to stop running, and controls each drive module 10 to stop running through each slave controller 112, troubleshoots the fault, avoids controlling the drive module 10 to run with the wrong information, causes the inclination of the photovoltaic module 13 to be inconsistent, and causes the support to be twisted.

[0049] The photovoltaic module control system of the embodiment includes a first detection module and a second detection module, the main controller 111 controls the drive module 10 to run according to the first feedback signal acquired by the first detection module and the second feedback signal acquired by the second detection module, determines the accuracy of the first feedback signal or the second feedback signal according to the size relationship between the difference between the operating angles calculated from the two feedback signals and the set angle threshold, avoids the inclination of the photovoltaic module 13 being different due to the inaccurate inclination of the photovoltaic module 13 fed back by the single feedback signal when the drive module 10 is controlled to run according to the single feedback signal, and further causes the support to be broken. The main controller 111 controls the drive module 10 to run according to the first feedback signal and the second feedback signal, can ensure the accuracy when the photovoltaic module 13 is driven to rotate by the drive module 10, ensures that the twisting angle of the support 15 is less than the set angle, and further reduces the probability of the support 15 being twisted and the risk of the support 15 being damaged.

[0050] Figure 4 Another structure schematic diagram of the photovoltaic module control system provided by the embodiment is provided, and the main controller 111, the first detection module, the second detection module, the drive module 10, the support 15, the photovoltaic module 13, the slave controller 112, the first detection unit, the second detection unit, the first feedback signal, the second feedback signal, the first operating angle, the second operating angle, the set angle threshold, the support twist detection module 12, the laser emitter 121 and the laser receiver 122 are shown in FIG. 2. Figure 4 Optionally, the support twist detection module 12 includes a laser emitter 121 and a laser receiver 122, the laser emitter 121 and the laser receiver 122 are arranged on the support 15, the photovoltaic module 13 is arranged between the laser emitter 121 and the laser receiver 122, the laser emitter 121 is electrically connected with the adjacent slave controller 112, and the laser receiver 122 is electrically connected with the main controller 111. The slave controller 112 is used for controlling the laser emitter 121 to send a detection signal, and the laser receiver 122 is used for generating a support normal signal when the detection signal is received, and is also used for generating a support twist signal when the detection signal is not received.

[0051] The support torsion detection module 12 rotates following the rotation of the support 15. When the support 15 does not occur torsion, the detection signal emitted by the laser emitter 121 can be directly incident into the laser receiver 122. When the support 15 occurs torsion, the detection signal emitted by the laser emitter 121 is blocked by the torsion support, resulting in the detection signal cannot be incident into the laser receiver 122, and then the laser receiver 122 cannot receive the detection signal. Therefore, whether the laser receiver 122 receives the detection signal emitted by the laser emitter 121 can determine whether the support 15 occurs torsion.

[0052] With reference to the foregoing description Figure 4 Optionally, the control system of the photovoltaic module comprises the support torsion detection module 12 and the first detection module;

[0053] The main controller 111 is configured to determine that the support normal signal is received on the support torsion detection module 12 within the first set time, calculate the first running angle according to the first feedback signal output by the first detection unit 141 corresponding to each photovoltaic module 13 and the target angle information, and send the running signal to each slave controller 112 corresponding to the first running angle to control the running state of the corresponding drive module 10 and control the running state of the drive module 10 corresponding to the main controller 111, and determine that the support torsion signal is received on the support torsion detection module 12 within the first set time, send the alarm signal to each slave controller 112 to control the corresponding drive module 10 to stop running and control the drive module 10 corresponding to the main controller 111 to stop running.

[0054] The target angle information is the target inclination angle of the photovoltaic module 13 at the current time. When the main controller 111 receives the support normal signal on the support torsion detection module 12 within the first set time, it indicates that the support 15 does not occur torsion, and the main controller 111 can control the running state of the corresponding drive module 10 according to the first running angle of the photovoltaic module 13 corresponding to the main controller 111, and the main controller 111 can also control the running state of the corresponding drive module 10 according to the first running angle of the photovoltaic module corresponding to each slave controller 112. That is, when the support does not occur torsion, the main controller 111 controls the running state of each drive module 10 directly or indirectly to make each drive module run to the target inclination angle. Similarly, when the main controller 111 receives the support torsion signal on the support torsion detection module 12 within the first set time, it indicates that the support 15 occurs torsion, and the main controller 111 directly controls the drive module 10 connected to the main controller 111 to stop running, and controls each corresponding drive module 10 to stop running through each slave controller 112, to avoid the torsion angle of the support increasing and the support breaking.

[0055] The control system of the photovoltaic module provided in the embodiment comprises a first detection module and a support torsion detection module 12, and the main controller 111 controls the running state of each drive module 10 according to the torsion result signal uploaded by the support torsion detection module 12 and the set of first feedback signals, so that the running of the drive module 10 can be immediately stopped when the support 15 is torsioned, thereby preventing the angle difference between the photovoltaic modules 13 from being increased due to the continuous running of the drive module 10, the torsion angle of the support 15 is increased, and the support is broken.

[0056] In other embodiments, the control system of the photovoltaic module can further comprise a second detection module and a support torsion detection module, or simultaneously comprise the first detection module, the second detection module and the support torsion detection module, which will not be described herein.

[0057] With reference to the foregoing Figure 4 Optionally, the main controller 111 is further configured to assign an address to the slave controller 112 after receiving the inquiry instruction sent by the slave controller 112.

[0058] The inquiry instruction comprises the serial number (ID number) of the slave controller 112. After the slave controller 112 is powered on, the slave controller 112 actively sends the inquiry instruction to the main controller 111. The main controller 111 records the serial number of the slave controller 112 and randomly assigns an address to the slave controller 112, and sends the address to the slave controller 112. At this time, the communication link between the main controller 111 and the slave controller 112 is built.

[0059] The automatic address assignment of each slave controller 112 can effectively reduce the time for manually assigning an address to each slave controller 112 when the number of slave controllers 112 is large, greatly improving the debugging efficiency of the entire system and saving labor.

[0060] With reference to the foregoing Figure 4 Optionally, the slave controller 112 is configured to control the connected drive module 10 to stop running when it is determined that no running signal is received within a second set time, or the slave controller 112 is configured to control the connected drive module 10 to stop running when an alarm signal sent by the main controller 111 is received.

[0061] When the main control 111 fails and cannot normally communicate with the slave controller 112, the slave controller 112 cannot receive the running signal of the main controller 111. Therefore, the slave controller 112 determines that the main controller 111 fails, and immediately controls the connected drive module 10 to stop running for troubleshooting. Alternatively, when the main controller 111 fails but the communication between the main controller 111 and the slave controller 112 is normal, the main controller 111 can generate an alarm signal and transmit it to the slave controller 112 to make each drive module 10 stop running.

[0062] The embodiment of the present application also provides a control method of a photovoltaic module. Figure 5 A flow chart of a control method of a photovoltaic module is provided for the embodiment of the present application, referring to Figure 5 The control method of the photovoltaic module comprises:

[0063] S10: controlling the operation of each driving module according to at least two of the set of first feedback signals obtained by each first detection unit, the set of second feedback signals obtained by each second detection unit and the torsion result signal sent by the support torsion detection module, so that the torsion angle of the support is less than the set angle.

[0064] The set of first feedback signals comprises the first feedback signals output by the first detection units, the set of second feedback signals comprises the second feedback signals output by the second detection units, and the torsion result signal comprises a support normal signal and a support torsion signal, and the first feedback signal and the second feedback signal are both used for feeding back the tilt angle of the corresponding photovoltaic module.

[0065] The control method of the photovoltaic module has the same beneficial effects as the control system of the photovoltaic module, and the present embodiment will not be described here.

[0066] Note that the above are only the preferred embodiments of the present application and the applied technical principles. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, readjustments and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A control system for a photovoltaic assembly, characterized by, The control system comprises: at least two drive modules, a control module electrically connected with the drive modules, and at least two of a support torsion detection module, a first detection module and a second detection module, wherein the first detection module comprises a first detection unit corresponding to each photovoltaic module and outputting a first feedback signal, and the second detection module comprises a second detection unit corresponding to each photovoltaic module and outputting a second feedback signal; wherein the first feedback signal and the second feedback signal are used to feedback the tilt angle of the corresponding photovoltaic module; the photovoltaic modules corresponding to the drive modules are arranged at different positions of a support, and the drive modules are mechanically connected with the support; the first detection module is electrically connected with the control module, the second detection module is electrically connected with the control module, and the support torsion detection module is electrically connected with the control module; the control module is used to control the operation of each drive module according to at least two of a set of first feedback signals, a set of second feedback signals and a torsion result signal sent by the support torsion detection module to the control module, so that the torsion angle of the support is less than a set angle; wherein the set of first feedback signals comprises the first feedback signal output by each first detection unit, the set of second feedback signals comprises the second feedback signal output by each second detection unit, and the torsion result signal comprises a support normal signal and a support torsion signal; the support torsion detection module comprises a laser emitter and a laser receiver, the laser emitter and the laser receiver are arranged on the support, the photovoltaic modules are arranged between the laser emitter and the laser receiver, the laser receiver is used to generate the support normal signal when receiving the detection signal sent by the laser emitter, and is used to generate the support torsion signal when not receiving the detection signal; when the control system of the photovoltaic module comprises the support torsion detection module, the control module receives the support torsion signal, and controls each drive module to stop operating; the control module controls the operation of each drive module according to the first feedback signal or the second feedback signal, so that the photovoltaic module rotates to a target angle.

2. The control system of a photovoltaic assembly according to claim 1, characterized in that, The first detection module is a tilt angle detection module, and the tilt angle detection module is arranged on the support; the second detection module is a Hall detection module, and the Hall detection module is arranged in the drive module.

3. The control system of a photovoltaic assembly according to claim 1, characterized in that, The control module comprises a controller corresponding to each drive module, wherein any one of the controllers is a master controller, and the rest of the controllers are slave controllers; the master controller is electrically connected with each slave controller, and the master controller is used to control the operation or stop operation of the corresponding drive module through the slave controller.

4. The control system of a photovoltaic assembly according to claim 3, characterized in that, The control system comprises the first detection module and the second detection module. The main controller is configured to calculate a first running angle according to a first feedback signal output by a first detection unit corresponding to each photovoltaic module and target angle information, to calculate a second running angle according to a second feedback signal output by a second detection unit corresponding to each photovoltaic module and the target angle information, and to determine, when a difference between each first running angle and the corresponding second running angle is less than or equal to a set angle threshold, send a running signal to the corresponding slave controller according to the first running angle or the second running angle corresponding to each slave controller to control a running state of the corresponding driving module, and to control a running state of the corresponding driving module according to the first running angle corresponding thereto, the running state including continuous running and stop running.

5. The control system of a photovoltaic assembly according to claim 4, characterized in that, The main controller is further configured to, when a difference between at least one first running angle and the corresponding second running angle is greater than the set angle threshold, send an alarm signal to the slave controller to control the driving module to stop running, and to control the driving module corresponding thereto to stop running.

6. The control system of a photovoltaic assembly according to claim 3, characterized in that, The support torsion detection module includes a laser emitter and a laser receiver, the laser emitter and the laser receiver are arranged on the support, the photovoltaic module is arranged between the laser emitter and the laser receiver, the laser emitter is electrically connected with an adjacent slave controller, the laser receiver is electrically connected with the main controller, the slave controller is configured to control the laser emitter to send a detection signal, the laser receiver is configured to generate the support normal signal when the detection signal is received, and to generate the support torsion signal when the detection signal is not received.

7. The control system of a photovoltaic assembly according to claim 6, characterized in that, The support torsion detection module and the first detection module are included. The main controller is configured to, when the support normal signal uploaded by the support torsion detection module is received within a first set time, calculate a first running angle according to a first feedback signal output by a first detection unit corresponding to each photovoltaic module and target angle information, to send a running signal to the corresponding slave controller according to a first running angle corresponding to each slave controller to control a running state of the corresponding driving module, and to control a running state of the driving module corresponding thereto according to the first running angle corresponding thereto, and to, when the support torsion signal uploaded by the support torsion detection module is received within the first set time, send an alarm signal to each slave controller to control the corresponding driving module to stop running and control the driving module corresponding thereto to stop running.

8. The control system of a photovoltaic assembly according to claim 3, characterized in that, The main controller is further configured to, after receiving an inquiry instruction sent by the slave controller block, assign an address to the slave controller.

9. The control system of a photovoltaic assembly according to claim 4 or 7, characterized in that, The slave controller is configured to, when the running signal is not received within a second set time, control the connected driving module to stop running, or the slave controller is configured to, when the alarm signal sent by the main controller is received, control the connected driving module to stop running.

10. The control system of a photovoltaic assembly according to claim 1, characterized in that, Two adjacent photovoltaic modules are arranged on the support with a set interval, and the two adjacent driving modules are arranged on the support with the set interval, for driving the support at the arranged position to rotate to drive the photovoltaic module to rotate.

11. A method of controlling a photovoltaic assembly, characterized by, The control system for controlling the photovoltaic module according to any one of claims 1-10, and the control method of the photovoltaic module comprises: At least two of the set of first feedback signals obtained by each first detection unit, the set of second feedback signals obtained by each second detection unit, and the torsion result signal sent by the support torsion detection module control the operation of each driving module, so that the torsion angle of the support is less than a set angle; Wherein, the set of first feedback signals includes the first feedback signals output by each first detection unit, the set of second feedback signals includes the second feedback signals output by each second detection unit, the torsion result signal includes a support normal signal and a support torsion signal, and the first feedback signal and the second feedback signal are both used to feedback the inclination angle of the corresponding photovoltaic module.

Images