Method for establishing communication of a photovoltaic device and photovoltaic communication system

Abstract

The present application relates to the field of photovoltaic technology, and particularly relates to a communication establishment method of a photovoltaic device and a photovoltaic communication system. The communication establishment method is used for controlling the communication connection of the photovoltaic device with an external device through a Bluetooth module. The communication establishment method comprises the following steps: the Bluetooth module accesses the photovoltaic device and sends access instruction information to the photovoltaic device; the photovoltaic device identifies the access instruction information, calls preset broadcast information packages, and configures the preset broadcast information packages for the Bluetooth module; and the Bluetooth module broadcasts based on the preset broadcast information packages to establish the communication connection with the external device. The present application does not need to set a specific device protocol analysis in the Bluetooth module, and can flexibly acquire the broadcast information of the photovoltaic device in time according to the actual system information of the photovoltaic device accessed by the Bluetooth module, and has strong versatility.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic technology, and specifically to a method for establishing communication for a photovoltaic device and a photovoltaic communication system. Background Technology

[0002] Photovoltaic devices typically require Bluetooth devices to communicate with external devices and exchange data.

[0003] Bluetooth devices typically configure their broadcast messages either through the supplier or by the manufacturer based on individual orders. Neither method allows for flexible customization of the broadcast messages or automatic changes based on different products, resulting in high costs for both suppliers and manufacturers.

[0004] In related technologies, some manufacturers embed a program into photovoltaic devices using Bluetooth modules. The Bluetooth module obtains the device information that the photovoltaic device needs to broadcast according to the corresponding photovoltaic device's protocol. Then, based on the obtained information, it actively changes the Bluetooth module's name and broadcast information before broadcasting and communicating with external devices.

[0005] However, in the above solution, Bluetooth module manufacturers need to embed device protocol parsing into the Bluetooth module. Different devices have different protocols, requiring custom-designed Bluetooth modules. Therefore, this method of changing the broadcast information of the Bluetooth module has poor universality. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a communication establishment method and a photovoltaic communication system for a photovoltaic device, in order to address the above-mentioned deficiencies of the prior art and solve the problem of poor universality of the broadcast information modification method of the existing photovoltaic device communication.

[0007] The technical solution adopted by this invention to solve its technical problem is: providing a communication establishment method for a photovoltaic device, the communication establishment method being used for controlling the photovoltaic device to communicate with external devices via a Bluetooth module, the communication establishment method comprising:

[0008] The Bluetooth module connects to the photovoltaic device and sends access command information to the photovoltaic device;

[0009] The photovoltaic device identifies the access command information, retrieves a preset broadcast information packet, and configures the preset broadcast information packet for the Bluetooth module.

[0010] The Bluetooth module broadcasts based on the preset broadcast information packet to establish a communication connection with external devices.

[0011] A preferred embodiment is that configuring the preset broadcast information packet for the Bluetooth module specifically includes:

[0012] Retrieve preset broadcast information packets;

[0013] The preset broadcast information packet is sent to the Bluetooth module via a communication command;

[0014] The Bluetooth module sends configuration response information back to the photovoltaic device to complete the configuration of the preset broadcast information packet.

[0015] A preferred embodiment is that configuring the preset broadcast information packet for the Bluetooth module further includes:

[0016] Set the maximum number of configurations N, where N is a positive integer;

[0017] The preset broadcast information packet is sent to the Bluetooth module via a communication command;

[0018] If the photovoltaic device does not receive the configuration response information from the Bluetooth module, it resends the preset broadcast information packet to the Bluetooth module via communication command;

[0019] The maximum number of configuration attempts N is decremented by one after the photovoltaic device sends the preset broadcast information packet, until the photovoltaic device receives the configuration response information from the Bluetooth module, or N becomes zero, thus completing the configuration of the Bluetooth module.

[0020] A preferred embodiment is that the Bluetooth module sends configuration response information back to the photovoltaic device, specifically including:

[0021] Determine whether the Bluetooth module is connected to an external device.

[0022] If the Bluetooth module is not connected to an external device, the Bluetooth module receives the preset broadcast information packet and sends back configuration response information to the photovoltaic device.

[0023] A preferred embodiment is that the communication establishment method further includes:

[0024] The Bluetooth module is connected to the photovoltaic device and draws power from the photovoltaic device for initialization;

[0025] After a preset power-on delay time, the Bluetooth module sends an access command to the photovoltaic device.

[0026] A preferred embodiment is that the communication establishment method further includes:

[0027] After the Bluetooth module is connected to the photovoltaic device, before configuring the preset broadcast information packet for the Bluetooth module, the Bluetooth module is prohibited from sending broadcasts.

[0028] A preferred embodiment is that, when the Bluetooth module is built into the photovoltaic device, the communication establishment method further includes:

[0029] The device communicates with the photovoltaic device via the Bluetooth module, and the preset broadcast information package is customized.

[0030] The technical solution adopted by the present invention to solve its technical problem is: a photovoltaic communication system is also provided, the photovoltaic communication system includes a photovoltaic device and a Bluetooth module, the photovoltaic device uses the above-described photovoltaic device communication establishment method to communicate with external devices through the Bluetooth module.

[0031] A preferred embodiment is that the photovoltaic device includes a controller, a Bluetooth interface, and a cable. The Bluetooth interface is connected to the Bluetooth module. The controller communicates with the Bluetooth interface through the cable and supplies power to the Bluetooth module through the cable and the Bluetooth interface.

[0032] A preferred embodiment is that the Bluetooth module is built into the photovoltaic device, or the Bluetooth module is an external hot-swappable Bluetooth module.

[0033] The beneficial effects of this invention are as follows: Compared with the prior art, this invention enables the photovoltaic device to communicate with external devices via Bluetooth by sending access command information to the photovoltaic device through the Bluetooth module. The photovoltaic device recognizes the access command information, retrieves a preset broadcast information packet, configures the Bluetooth module with the preset broadcast information packet, and then broadcasts based on the preset broadcast information packet. This allows the photovoltaic device to quickly and accurately identify the system information of the corresponding photovoltaic device and quickly establish a communication connection. This solution does not require setting specific device protocol parsing in the Bluetooth module, and can flexibly obtain the broadcast information of the photovoltaic device in a timely manner according to the actual system information of the photovoltaic device connected to the Bluetooth module, thus having strong versatility. Attached Figure Description

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0035] Figure 1 This is a flowchart of an embodiment of the communication establishment method for a photovoltaic device according to the present invention;

[0036] Figure 2 yes Figure 1 A flowchart illustrating the process of configuring a preset broadcast information packet for a Bluetooth module;

[0037] Figure 3 yes Figure 1 A flowchart of a specific embodiment of configuring a preset broadcast information packet for a Bluetooth module;

[0038] Figure 4This is a flowchart of an embodiment of the Bluetooth module sending configuration response information to the photovoltaic device;

[0039] Figure 5 This is a simplified structural block diagram of the photovoltaic communication system of the present invention;

[0040] Figure 6 This is a structural block diagram of an embodiment of the photovoltaic communication system of the present invention;

[0041] Figure 7 yes Figure 6 A structural block diagram of one embodiment of the controller.

[0042] The labels in the attached diagram are as follows:

[0043] 10. Photovoltaic device; 11. Controller; 111. Photovoltaic; 112. Main control chip; 113. Charging drive module; 114. Charging current sampling module; 115. Temperature sampling module; 116. Display module; 117. User operation module; 12. Bluetooth interface; 13. Cable; 20. Bluetooth module. Detailed Implementation

[0044] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0045] like Figure 1 As shown, the present invention provides a preferred embodiment of a communication establishment method for a photovoltaic device.

[0046] The communication establishment method for photovoltaic devices is used to control the communication connection between photovoltaic devices and external devices via Bluetooth modules.

[0047] refer to Figure 1 The communication establishment methods for photovoltaic devices include:

[0048] S101. The Bluetooth module connects to the photovoltaic device and sends access command information to the photovoltaic device.

[0049] S102. The photovoltaic device identifies the access command information, retrieves the preset broadcast information packet, and configures the preset broadcast information packet for the Bluetooth module.

[0050] S103 The Bluetooth module broadcasts a preset broadcast information packet to establish a communication connection with external devices.

[0051] This invention enables the photovoltaic (PV) device to communicate with external devices via Bluetooth by sending access command information to the PV device through a Bluetooth module. The PV device recognizes the access command information, retrieves a preset broadcast information packet, configures the Bluetooth module with the preset broadcast information packet, and then broadcasts based on the preset broadcast information packet. Users can quickly and accurately identify the system information of the corresponding PV device on external devices and quickly establish a communication connection. This solution does not require setting specific device protocol parsing in the Bluetooth module, and can flexibly obtain the broadcast information of the PV device in a timely manner based on the actual system information of the PV device connected to the Bluetooth module. It does not require much special customization of the Bluetooth module, and can meet the communication needs of different PV devices. It has strong versatility and facilitates users to integrate and identify the information searched and broadcast by the Bluetooth module of PV products.

[0052] In steps S101 and S102, the Bluetooth module connects to the photovoltaic device. The Bluetooth module sends an access command message via the serial port. The photovoltaic device identifies the access command message sent by the Bluetooth module to determine whether a Bluetooth module has connected. It quickly responds to the Bluetooth module's access and retrieves its own internal preset broadcast information packet to configure the connected Bluetooth module. It promptly modifies the Bluetooth module's broadcast information and broadcasts the configured broadcast information packet. This enables the actual photovoltaic device to broadcast system information without needing to interface with the Bluetooth module through a special protocol to parse and change the broadcast information.

[0053] In step S103, after configuring the preset broadcast information packet, the Bluetooth module broadcasts the preset broadcast information packet. When external devices search for the Bluetooth module, users can quickly identify the broadcast information of the actual photovoltaic device.

[0054] For example, without modifying the broadcast information of the Bluetooth module, the broadcast information might be named by the Bluetooth module manufacturer according to its own product naming rules. Multiple Bluetooth modules might have similar names, making it difficult for users to quickly identify which of the multiple broadcast messages corresponds to the target photovoltaic device. However, using the method described in this application, the broadcast information broadcast by the Bluetooth module is distinctive and corresponds to the photovoltaic device, allowing users to quickly identify, pair, and establish a communication connection.

[0055] refer to Figure 1 and Figure 2 In step S102, a preset broadcast information packet is configured for the Bluetooth module, specifically including:

[0056] S201, Retrieve preset broadcast information packets;

[0057] S202. Send a preset broadcast information packet to the Bluetooth module via a communication command;

[0058] S203, the Bluetooth module sends configuration response information back to the photovoltaic device to complete the configuration of the preset broadcast information packet.

[0059] In step S202, the communication command is an AT command. AT commands are used for connection and communication between terminal devices and PC applications. AT stands for Attention. Each AT command line can contain only one AT command; for sending AT commands, in addition to the two characters AT, a maximum length of 1056 characters can be received.

[0060] In step S203, after receiving the preset broadcast information packet, the Bluetooth module sends back configuration response information to the photovoltaic device, forming a feedback mechanism to ensure the normal configuration of the Bluetooth module and normal communication.

[0061] Configuring the Bluetooth module with a preset broadcast message packet specifically includes:

[0062] Set the maximum number of configurations N, where N is a positive integer;

[0063] Send a preset broadcast message packet to the Bluetooth module via communication commands;

[0064] If the photovoltaic device does not receive the configuration response information from the Bluetooth module, it will resend the preset broadcast information packet to the Bluetooth module via communication command;

[0065] The maximum number of configuration attempts, N, is decremented by one after the photovoltaic device sends a preset broadcast information packet, until the photovoltaic device receives the configuration response information from the Bluetooth module, or N becomes zero, thus completing the configuration of the Bluetooth module.

[0066] During the configuration process of the Bluetooth module, the photovoltaic device sets a maximum number of configuration attempts. If the Bluetooth module does not respond with a configuration response, indicating that the Bluetooth module has not been configured successfully and there is a configuration error, the photovoltaic device will reconfigure the Bluetooth module. This allows for configuration errors and reconfiguration, adding a fault tolerance mechanism. At the same time, it will not configure indefinitely, because the Bluetooth module may be removed midway, and the photovoltaic device may switch to other communication devices to ensure that the interface data between the photovoltaic device and the Bluetooth module is idle.

[0067] The maximum number of configuration attempts N can be set as needed; no specific value for N is restricted here.

[0068] In one specific embodiment, reference Figure 3The specific steps for configuring a preset broadcast information packet for the Bluetooth module include: S301, determining whether an access command message from the Bluetooth module has been received; S302, obtaining the preset broadcast information packet and setting the maximum configuration count N to 3; S303, determining whether the maximum configuration count N is greater than zero; S304, sending the preset broadcast information packet to the Bluetooth module via a communication command, decrementing N by one; S305, determining whether a configuration response message from the Bluetooth module has been received; S306, returning.

[0069] When configuring the Bluetooth module with a preset broadcast message packet, first execute step S301. If an access command message from the Bluetooth module is received, proceed to step S302. If no access command message is received, proceed to step S306. After proceeding to step S302, proceed to step S303. If the maximum configuration count N is greater than zero, proceed to step S304. Otherwise, proceed to step S306. After proceeding to step S304, proceed to step S305. If the controller receives a configuration response message from the Bluetooth module, proceed to step S306. If the controller does not receive a configuration response message from the Bluetooth module, proceed to step S303.

[0070] In one embodiment, in step S203, the Bluetooth module sends configuration response information back to the photovoltaic device, specifically including:

[0071] Determine if the Bluetooth module is connected to an external device;

[0072] If the Bluetooth module is not connected to an external device, the Bluetooth module receives a preset broadcast message packet and sends a configuration response message back to the photovoltaic device.

[0073] On the other hand, if the Bluetooth module is connected to an external device, the photovoltaic device does not configure the Bluetooth module, and the Bluetooth module does not receive preset broadcast information packets, ensuring the normal operation of the existing communication of the Bluetooth module.

[0074] By configuring preset broadcast packets during the Bluetooth module's idle time, normal communication of the Bluetooth module can be guaranteed, and the idle time of the Bluetooth module can be fully utilized.

[0075] In a specific application embodiment, refer to Figure 4 The Bluetooth module's feedback of configuration response information to the photovoltaic device specifically includes: S401, determining whether the Bluetooth module is connected for communication; S402, determining whether a communication command or broadcast information packet has been received; S403, processing the communication command and retrieving the preset broadcast information packet; S404, the Bluetooth module performs data pass-through with the external device; S405, the Bluetooth module feeds back configuration response information to the photovoltaic device; S406, the Bluetooth module broadcasts the preset broadcast information packet; S407, returning.

[0076] When executing the step of sending configuration response information from the Bluetooth module to the photovoltaic device, first execute step S401. If yes, execute step S404. If no, execute step S402. If a communication command or broadcast information packet is received, execute steps S403, S405, S406 and S407 in sequence. If no communication command or broadcast information packet is received, execute step S407 directly.

[0077] In one embodiment, the communication establishment method for a photovoltaic device further includes:

[0078] Before the Bluetooth module is configured with a preset broadcast information packet after it is connected to the photovoltaic device, the Bluetooth module is prohibited from sending broadcasts.

[0079] When a Bluetooth module is connected to a photovoltaic device, a series of steps are initiated to configure preset broadcast information for the Bluetooth module. During this process, if the Bluetooth module sends a broadcast before completing the broadcast information configuration, it may broadcast error information related to communication with the previous external device, posing a risk of broadcast errors. Therefore, in this embodiment, broadcasting is prohibited until the Bluetooth module has completed the broadcast information configuration.

[0080] In one embodiment of this application, when the Bluetooth module is initially connected to the photovoltaic device, the communication establishment method of the photovoltaic device further includes:

[0081] The Bluetooth module connects to the photovoltaic device and draws power from the photovoltaic device for initialization.

[0082] After a preset power-on delay time, the Bluetooth module sends access command information to the photovoltaic device.

[0083] In this step, the Bluetooth module draws power from the photovoltaic device for initialization. There is no need to set up a power supply circuit in the Bluetooth module. It can draw power directly from the photovoltaic device, making it plug-and-play and simplifying the circuit structure of the Bluetooth module itself.

[0084] The power-on delay time provides the Bluetooth module with the time to draw power and initialize, allowing the Bluetooth module to complete its own initialization and configuration after power-on, and then enable broadcasting after obtaining the preset broadcast information packet transmitted by the photovoltaic device, ensuring that the information broadcast by the Bluetooth module is the real equipment information of the photovoltaic device.

[0085] The power-on delay time can be set according to actual needs, and there is no specific time limit for the power-on delay time.

[0086] In the embodiments of this application, the Bluetooth module can be external or built into the photovoltaic device, and the photovoltaic device can achieve communication connection with external devices through the Bluetooth module.

[0087] In one embodiment, when the Bluetooth module is built into the photovoltaic device, the communication establishment method for the photovoltaic device further includes:

[0088] It communicates with the photovoltaic device via Bluetooth module and allows for custom settings of preset broadcast information packets.

[0089] The Bluetooth module allows users to customize preset broadcast messages, providing a way to set the information in the preset broadcast messages according to their own needs.

[0090] refer to Figure 5 This application also provides a preferred embodiment of a photovoltaic communication system.

[0091] The photovoltaic communication system includes a photovoltaic device and a Bluetooth module 20. The photovoltaic device uses the aforementioned photovoltaic device communication establishment method to communicate with external devices through the Bluetooth module 20.

[0092] The photovoltaic communication system of this application sends access command information to the photovoltaic device via Bluetooth module 20. The photovoltaic device recognizes the access command information, retrieves a preset broadcast information packet, configures the Bluetooth module 20 with the preset broadcast information packet, and then broadcasts based on the preset broadcast information packet. This enables the photovoltaic device to communicate with external devices through Bluetooth module 20. Users can quickly and accurately identify the system information of the corresponding photovoltaic device and quickly establish a communication connection on external devices. This solution does not require setting device protocol parsing in Bluetooth module 20. It can flexibly obtain the broadcast information of the photovoltaic device in a timely manner based on the actual system information of the photovoltaic device connected to Bluetooth module 20. It does not require much special customization of Bluetooth module 20 and can meet the communication needs of different photovoltaic devices. It has strong versatility and facilitates users to perform integrated identification and recognition of information searched and broadcast by Bluetooth module 20 of photovoltaic 111 products.

[0093] The Bluetooth module 20 is built into the photovoltaic device, which has its own Bluetooth module 20. The photovoltaic device communicates with external devices through the Bluetooth module 20.

[0094] Alternatively, Bluetooth module 20 can be an external, hot-swappable Bluetooth module. The external hot-swappable Bluetooth module 20 can be used in different photovoltaic devices. After the photovoltaic device connects to the hot-swappable Bluetooth module 20, it configures its own preset broadcast information packet for the module. The hot-swappable Bluetooth module 20 is applicable to different photovoltaic devices, is plug-and-play, and the photovoltaic device does not require an additional Bluetooth module 20.

[0095] In addition, the Bluetooth module 20 can be a Bluetooth module 20 with only Bluetooth communication function, or it can be a Bluetooth module 20 with MESH (wireless mesh network) function, which can network and communicate with other Bluetooth modules 20.

[0096] In one embodiment, reference Figure 5 and Figure 6 The photovoltaic device includes a controller 11, a Bluetooth interface 12, and a cable 13. The Bluetooth interface 12 is connected to the Bluetooth module 20. The controller 11 communicates with the Bluetooth interface 12 through the cable 13 and supplies power to the Bluetooth module 20 through the cable 13 and the Bluetooth interface 12.

[0097] Cable 13 can be used as a communication line between controller 11 and Bluetooth module 20, or as a wire for Bluetooth module 20 to draw power from controller 11, which can reduce the number of connection lines between controller 11 and Bluetooth module 20 and simplify the circuit structure.

[0098] In one embodiment, reference Figures 5 to 7 The controller 11 includes a photovoltaic module 111, a main control chip 112, a charging drive module 113, a charging current sampling module 114, and a temperature sampling module 115.

[0099] The charging drive module 113 is used for charging management of the external battery.

[0100] The charging current sampling module 114 is used to collect the charging current of the charging drive module 113 charging the external battery.

[0101] The temperature sampling module 115 is used to collect the temperature of the battery being charged.

[0102] The main control chip 112 is connected to the Bluetooth module 20 through the Bluetooth interface 12, and communicates with external devices through the Bluetooth module 20.

[0103] The main control chip 112 is also connected to the photovoltaic 111, the charging drive module 113, the charging current sampling module 114, the temperature sampling module 115, and the external battery. Based on the voltage of the photovoltaic 111, the voltage of the battery, the charging current collected by the charging current sampling module 114, and the temperature collected by the temperature sampling module 115, the main control chip 112 outputs a control signal to the charging drive module 113. The charging drive module 113 charges the external battery based on the control signal, thereby improving the safety and reliability of the controller 11 in charging the battery.

[0104] In one embodiment, the controller 11 further includes a display module 116 connected to the main control chip 112. The display module 116 can be used to display the operating information of the controller 11, such as the voltage of the photovoltaic 111, the voltage of the battery being charged, the charging current, temperature, and other operating information, so that users can intuitively understand the operating status of the controller 11.

[0105] The display module 116 can take the form of an LCD screen, a digital display tube, or the like.

[0106] In one embodiment, the controller 11 further includes a user operation module 117 connected to the main control chip 112. Users can use the user operation module 117 to set relevant parameters of the controller 11, switch operation pages, and perform other operations. Specifically, the user operation module 117 can use methods such as buttons or a touchscreen for user interaction with the controller 11.

[0107] The above description is merely the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the claims of the present invention are covered by the present invention.

Claims

1. A method of establishing communication for a photovoltaic device, the method comprising: The communication establishment method is used for controlling the communication connection between a photovoltaic device and an external device via a Bluetooth module. The communication establishment method includes: The Bluetooth module connects to the photovoltaic device and sends access command information to the photovoltaic device; The photovoltaic device identifies the access command information, retrieves a preset broadcast information packet, and configures the preset broadcast information packet for the Bluetooth module. The Bluetooth module broadcasts based on the preset broadcast information packet to establish a communication connection with external devices; Specifically, configuring the preset broadcast information packet for the Bluetooth module includes: Retrieve preset broadcast information packets; The preset broadcast information packet is sent to the Bluetooth module via a communication command; The Bluetooth module sends configuration response information back to the photovoltaic device to complete the configuration of the preset broadcast information packet; The configuration of the preset broadcast information packet for the Bluetooth module further includes: Set the maximum number of configurations N, where N is a positive integer; The preset broadcast information packet is sent to the Bluetooth module via a communication command; If the photovoltaic device does not receive the configuration response information from the Bluetooth module, it resends the preset broadcast information packet to the Bluetooth module via a communication command. The maximum number of configuration attempts N is decremented by one after the photovoltaic device sends the preset broadcast information packet, until the photovoltaic device receives the configuration response information from the Bluetooth module, or N becomes zero, completing the configuration of the Bluetooth module, and the photovoltaic device then switches to other communication devices for communication.

2. The communication setup method according to claim 1, characterized by, The Bluetooth module sends configuration response information back to the photovoltaic device, specifically including: Determine whether the Bluetooth module is connected to an external device. If the Bluetooth module is not connected to an external device, the Bluetooth module receives the preset broadcast information packet and sends back configuration response information to the photovoltaic device.

3. The communication setup method according to claim 1 or 2, characterized by, The communication establishment method further includes: The Bluetooth module is connected to the photovoltaic device and draws power from the photovoltaic device for initialization; After a preset power-on delay time, the Bluetooth module sends an access command to the photovoltaic device.

4. The communication setup method according to claim 1 or 2, characterized by, The communication establishment method further includes: After the Bluetooth module is connected to the photovoltaic device, before configuring the preset broadcast information packet for the Bluetooth module, the Bluetooth module is prohibited from sending broadcasts.

5. The communication setup method according to claim 1 or 2, characterized by, When the Bluetooth module is built into the photovoltaic device, the communication establishment method further includes: The device communicates with the photovoltaic device via the Bluetooth module, and the preset broadcast information package is customized.

6. A photovoltaic communication system, characterized by The photovoltaic communication system includes a photovoltaic device and a Bluetooth module. The photovoltaic device uses the communication establishment method of the photovoltaic device as described in any one of claims 1 to 5 to communicate with external devices through the Bluetooth module.

7. The photovoltaic communication system of claim 6, wherein, The photovoltaic device includes a controller, a Bluetooth interface, and a cable. The Bluetooth interface is connected to the Bluetooth module. The controller communicates with the Bluetooth interface through the cable and supplies power to the Bluetooth module through the cable and the Bluetooth interface.

8. The photovoltaic communication system according to claim 6 or 7, characterized in that, The Bluetooth module is built into the photovoltaic device, or the Bluetooth module is an external hot-swappable Bluetooth module.

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