Operation and maintenance controller and solar power supply system

Abstract

The utility model provides an operation and maintenance controller and a solar power supply system, and relates to the technical field of solar power supply, the system comprises an anomaly detection module, a wireless transceiver module, an independent power supply module and a main control module, the anomaly detection module is respectively connected with a solar panel, a battery pack and the wireless transceiver module; the anomaly detection module is used for generating a first detection signal corresponding to the solar panel and a second detection signal corresponding to the battery pack, and sending the first detection signal and the second detection signal to the wireless transceiver module; the independent power supply module is respectively connected with the main control module and the wireless transceiver module; the wireless receiving and transmitting module is connected with the main control module, the wireless receiving and transmitting module is in communication connection with a remote terminal within a preset distance, and the wireless receiving and transmitting module is used for transmitting the first detection signal, the second detection signal and a regular communication signal between the wireless receiving and transmitting module and the main control module to the remote terminal. According to the utility model, the convenience of operation and maintenance of the solar control system can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of solar power supply, in particular to an operation and maintenance controller and a solar power supply system. Background Art

[0002] Solar power supply devices are used to provide power in outdoor monitoring and other scenarios where it is inconvenient to wire cables outdoors. Figure 1 and Figure 2 As shown, the solar power supply device includes components such as solar panels, battery packs, control motherboards and 4G boards. Among them, the solar panels are used to generate electricity, which can directly power external loads and charge battery packs; the battery packs are used to power external loads when there is insufficient sunlight; the control motherboard is used to perform charge and discharge control, etc.; the 4G board is used to provide a network for external loads and can also upload information about the solar power supply device to the server.

[0003] At present, solar power supply devices are generally installed on outdoor fixed poles. Auxiliary equipment is required for maintenance of solar power supply devices, which is cumbersome and has high operation and maintenance costs. For example, when a solar power supply device fails, the pre-failure data transmitted remotely through the 4G board cannot accurately determine the cause of the failure. After arriving at the site, it is necessary to use a climbing vehicle or other equipment to assist in contacting the solar power supply device, and then observe the indicator light or measure the voltage data with a multimeter to further determine the cause of the failure. Utility Model Content

[0004] The utility model provides an operation and maintenance controller and a solar power supply system, which are used to solve the defects in the prior art that auxiliary equipment is needed to maintain the solar power supply device and the maintenance process is relatively cumbersome, thereby improving the convenience of operation and maintenance of the solar control system and reducing operation and maintenance costs.

[0005] The utility model provides an operation and maintenance controller, including: an abnormality detection module, a wireless transceiver module, an independent power supply module and a main control module, wherein:

[0006] The abnormality detection module is connected to the solar panel, the battery pack and the wireless transceiver module respectively, and is used to generate a first detection signal corresponding to the solar panel and a second detection signal corresponding to the battery pack, and send the first detection signal and the second detection signal to the wireless transceiver module;

[0007] The independent power supply module is connected to the main control module and the wireless transceiver module respectively, and the independent power supply module is used to supply power to the main control module and the wireless transceiver module in case of failure of the solar panel and the battery pack;

[0008] The wireless transceiver module is connected to the main control module, and the wireless transceiver module is communicatively connected to a remote terminal within a preset distance. The wireless transceiver module is used to send the first detection signal, the second detection signal, and the regular communication signal between the wireless transceiver module and the main control module to the remote terminal.

[0009] According to the operation and maintenance controller provided by the utility model, the abnormality detection module includes a first detection circuit and a second detection circuit, wherein:

[0010] The first end of the first detection circuit is connected to the first end of the solar panel, the second end of the first detection circuit is connected to the second end of the solar panel, the first output end of the first detection circuit is connected to the first input end of the wireless transceiver module, and the second output end of the first detection circuit is connected to the third input end of the wireless transceiver module; the first output end of the first detection circuit is used to output an open circuit detection signal in the first detection signal to the first input end of the wireless transceiver module; the second output end of the first detection circuit is used to output a short circuit detection signal in the first detection signal to the second input end of the wireless transceiver module;

[0011] The first end of the second detection circuit is connected to the first end of the battery pack, the second end of the second detection circuit is connected to the second end of the battery pack, and the output end of the second detection circuit is connected to the second input end of the wireless transceiver module; the second detection circuit is used to output the second detection signal to the second input end of the wireless transceiver module.

[0012] According to the operation and maintenance controller provided by the utility model, the first detection circuit includes an open circuit detection subcircuit and a short circuit detection subcircuit, wherein:

[0013] The first end of the open circuit detection subcircuit is connected to the first end of the short circuit detection subcircuit and serves as the first end of the first detection circuit. The second end of the open circuit detection subcircuit is connected to the second end of the short circuit detection subcircuit and serves as the second end of the first detection circuit. The output end of the open circuit detection subcircuit serves as the first output end of the first detection circuit; the output end of the short circuit detection subcircuit serves as the second output end of the first detection circuit.

[0014] According to the operation and maintenance controller provided by the utility model, the open circuit detection subcircuit includes a resistor R1 and a resistor R2, wherein: the resistor R1 and the resistor R2 are connected in series, and the end of the resistor R1 away from the resistor R2 serves as the first end of the open circuit detection subcircuit, the end of the resistor R2 away from the resistor R1 serves as the second end of the open circuit detection subcircuit, and the connection point of the resistor R1 and the resistor R2 serves as the output end of the open circuit detection subcircuit, and the output end of the open circuit detection subcircuit is used to determine the first midpoint voltage of the resistor R1 and the resistor R2 as the open circuit detection signal;

[0015] or,

[0016] The open circuit detection subcircuit includes a resistor R1, a resistor R2 and a first comparator, wherein: the resistor R1 and the resistor R2 are connected in series, and the end of the resistor R1 away from the resistor R2 serves as the first end of the open circuit detection subcircuit, and the end of the resistor R2 away from the resistor R1 serves as the second end of the open circuit detection subcircuit, and the connection point of the resistor R1 and the resistor R2 is connected to the first input end of the first comparator, which is used to input the first midpoint voltage of the resistor R1 and the resistor R2 to the first input end of the first comparator, and the first reference voltage is input to the second input end of the first comparator. The output end of the first comparator serves as the output end of the open circuit detection subcircuit, and the first comparator is used to output the open circuit detection signal based on the comparison result of the first midpoint voltage and the first reference voltage.

[0017] According to the operation and maintenance controller provided by the utility model, the short-circuit detection subcircuit includes a resistor R3 and an operational amplifier, wherein: one end of the resistor R3 is connected to the first input end of the operational amplifier and serves as the first end of the short-circuit detection subcircuit, the other end of the resistor R3 is connected to the second input end of the operational amplifier and serves as the second end of the short-circuit detection subcircuit, the output end of the operational amplifier serves as the output end of the short-circuit detection subcircuit, and the operational amplifier is used to determine the voltage difference between the two ends of the resistor R3, and determine the short-circuit detection signal based on the voltage difference; or,

[0018] The short-circuit detection subcircuit includes a resistor R3, an operational amplifier and a second comparator, wherein: one end of the resistor R3 is connected to the first input end of the operational amplifier and serves as the first end of the short-circuit detection subcircuit, the other end of the resistor R3 is connected to the second input end of the operational amplifier and serves as the second end of the short-circuit detection subcircuit, the output end of the operational amplifier is connected to the first input end of the second comparator, the operational amplifier is used to output the voltage difference between the two ends of the resistor R3 to the first input end of the second comparator, the second input end of the second comparator inputs a second reference voltage, the output end of the second comparator serves as the output end of the short-circuit detection subcircuit, and the second comparator is used to determine the short-circuit detection signal based on the comparison result of the voltage difference and the second reference voltage.

[0019] According to the operation and maintenance controller provided by the utility model, the circuit structure of the second detection circuit is the same as the circuit structure of the open circuit detection sub-circuit.

[0020] According to the operation and maintenance controller provided by the utility model, the independent power supply module is also connected to the solar panel and the battery pack, and the independent power supply module is used for charging based on the solar panel or the battery pack.

[0021] The operation and maintenance controller provided by the utility model further includes a communication module, which is respectively connected to the server, the external load, the remote terminal, the main control module, the independent power supply module and the wireless transceiver module.

[0022] The operation and maintenance controller provided by the utility model also includes: a collection module, a charge and discharge control module and an external output module, wherein:

[0023] The acquisition module is connected to the external load, the main control module, the solar panel and the battery pack, and is used to respectively acquire power information corresponding to the solar panel, the battery pack and the external load;

[0024] The charge and discharge control module is connected to the main control module and the battery pack, and the main control module determines a first control signal based on the power information corresponding to the battery pack, and controls the on and off state of the charge and discharge control module based on the first control signal; the external output module is respectively connected to the main control module and the external load, and the main control module determines a second control signal based on the power information corresponding to the external load, and controls the on and off state of the external output module based on the second control signal.

[0025] The utility model also provides a solar power supply system, comprising a solar panel, a battery pack and an operation and maintenance controller as described in any one of the above items, wherein the solar panel and the battery pack are both connected to the operation and maintenance controller, and the solar panel is connected to the battery pack.

[0026] The operation and maintenance controller and solar power supply system provided by the utility model respectively generate a first detection signal corresponding to the solar panel and a second detection signal corresponding to the battery pack through the abnormal detection module, and send the first detection signal and the second detection signal to the wireless transceiver module. When the solar panel, the battery pack or the independent power supply battery powers the wireless transceiver module, the wireless transceiver module can send the first detection signal, the second detection signal and the regular communication signal for interacting with the main control module to the remote terminal after connecting to the remote terminal, so as to avoid the maintenance personnel to collect on-site detection information for subsequent operation and maintenance with the help of auxiliary equipment, thereby improving the convenience of operation and maintenance of the solar control system and avoiding the detection cost caused by the auxiliary equipment, thereby reducing the operation and maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 It is one of the structural schematic diagrams of the solar power supply device provided by the prior art.

[0029] Figure 2 This is the second structural schematic diagram of the solar power supply device provided by the prior art.

[0030] Figure 3 It is one of the structural diagrams of the operation and maintenance controller provided in the embodiment of the utility model.

[0031] Figure 4 It is a structural diagram of an abnormality detection module provided in an embodiment of the utility model.

[0032] Figure 5 This is one of the connection diagrams of the open circuit detection subcircuit provided in the embodiment of the utility model.

[0033] Figure 6 This is the second connection schematic diagram of the open circuit detection sub-circuit provided in the embodiment of the utility model.

[0034] Figure 7 This is one of the connection diagrams of the short-circuit detection sub-circuit provided in the embodiment of the utility model.

[0035] Figure 8 This is the second connection diagram of the short-circuit detection sub-circuit provided in the embodiment of the utility model.

[0036] Fig. 9 This is one of the connection diagrams of the second detection circuit provided in the embodiment of the utility model.

[0037] Fig.10 This is the second connection diagram of the second detection circuit provided in the embodiment of the utility model.

[0038] Fig.11 It is a flow chart of establishing a connection between a wireless transceiver module and a remote terminal provided by an embodiment of the utility model.

[0039] Fig.12 This is the second structural diagram of the operation and maintenance controller provided in the embodiment of the utility model.

[0040] Fig.13 It is a schematic diagram of the fault detection process provided by an embodiment of the utility model.

[0041] Fig.14 It is a structural schematic diagram of a solar power supply system provided by an embodiment of the utility model.

[0042] Reference numerals:

[0043] 100: operation and maintenance controller; 110: abnormality detection module; 111: first detection circuit; 1111: open circuit detection sub-circuit; 1112: short circuit detection sub-circuit; 112: second detection circuit; 120: wireless transceiver module; 130: independent power supply module; 140: main control module; 150: communication module; 160: acquisition module; 170: charge and discharge control module; 180: external output module; 200: solar panel; 300: battery pack; 400: remote terminal; 500: server; 600: external load; 700: solar power supply system. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0045] In view of the problem in the prior art that auxiliary equipment is needed to maintain the solar power supply device, the maintenance process is cumbersome, the detection cost is high, and thus the operation and maintenance cost is high, the embodiment of the utility model provides an operation and maintenance controller. Figure 3 is a schematic diagram of the structure of the operation and maintenance controller provided by the embodiment of the utility model, such as Figure 3 As shown, the operation and maintenance controller 100 includes: an abnormality detection module 110, a wireless transceiver module 120, an independent power supply module 130 and a main control module 140.

[0046] The abnormality detection module 110 is respectively connected to the solar panel 200, the battery pack 300 and the wireless transceiver module 120. The abnormality detection module 110 is used to generate a first detection signal corresponding to the solar panel 200 and a second detection signal corresponding to the battery pack 300, and send the first detection signal and the second detection signal to the wireless transceiver module 120.

[0047] The independent power supply module 130 is connected to the main control module 140 and the wireless transceiver module 120 respectively, and is used to supply power to the main control module 140 and the wireless transceiver module 120 when the solar panel 200 and the battery pack 300 fail.

[0048] The wireless transceiver module 120 is connected to the main control module 140, and the wireless transceiver module 120 is communicatively connected to a remote terminal 400 within a preset distance. The wireless transceiver module 120 is used to send the first detection signal, the second detection signal, and the periodic communication signal between the wireless transceiver module 120 and the main control module 140 to the remote terminal 400.

[0049] Specifically, the main control module 140 in the operation and maintenance controller 100 performs charge and discharge control on the solar panel 200 and the battery pack 300. During operation and maintenance, the abnormality detection module 110 in the operation and maintenance controller 100 generates a first detection signal corresponding to the solar panel 200 and a second detection signal corresponding to the battery pack 300, and sends the first detection signal and the second detection signal to the wireless transceiver module 120, wherein the first detection signal includes an open circuit detection signal and a short circuit detection signal corresponding to the solar panel 200. After receiving the first detection signal and the second detection signal, the wireless transceiver module 120 can determine whether the solar panel 200 is abnormal according to the first detection signal, determine whether the battery pack 300 is abnormal according to the second detection signal, and determine whether the main control module 140 is abnormal according to the periodic communication signal between the wireless transceiver module 120 and the main control module 140. For example, it can be determined whether the main control module 140 periodically interacts with the wireless transceiver module 120 in the current cycle. If the periodic communication signal sent by the main control module 140 is received in the current cycle, it indicates that the main control module 140 is working normally. If the periodic communication signal sent by the main control module 140 is not received in the current cycle, it indicates that the main control module 140 is abnormal. Afterwards, when the distance between the maintenance personnel's handheld remote terminal 400 and the wireless transceiver module 120 is less than the preset distance, the above-mentioned first detection signal, second detection signal and regular communication signal are sent to the remote terminal 400 through the interaction between the wireless transceiver module 120 and the remote terminal 400, so as to avoid the maintenance personnel from using a climbing vehicle or other auxiliary equipment to collect on-site detection information, facilitate subsequent operation and maintenance operations, and avoid the detection cost caused by auxiliary equipment, thereby reducing the operation and maintenance cost. In addition, since the operation and maintenance process in the prior art depends on the solar panel 200 and the battery pack 300, if the battery pack 300 and the solar panel 200 themselves fail, the on-site detection information cannot be collected. Therefore, in the embodiment of the utility model, an independent power supply module 130 is also provided in the operation and maintenance controller 100. When the solar panel 200 and the battery pack 300 are abnormal, the independent power supply module 130 can supply power to the main control module 140 and the wireless transceiver module 120, reduce the dependence on the solar panel 200 and the battery pack 300, and meet the use of different scenarios.

[0050] Optionally, the remote terminal 400 may include a mobile phone, a mobile phone, or other terminals, which is not limited in the embodiment of the present utility model.

[0051] Further, Figure 4 Schematic diagram of the structure of the abnormality detection module provided by the embodiment of the utility model. Figure 4 As shown, the abnormality detection module 110 includes a first detection circuit 111 and a second detection circuit 112, wherein:

[0052] The first end of the first detection circuit 111 is connected to the first end of the solar panel 200, the second end of the first detection circuit 111 is connected to the second end of the solar panel 200, the first output end of the first detection circuit 111 is connected to the first input end of the wireless transceiver module 120, and the second output end of the first detection circuit 111 is connected to the third input end of the wireless transceiver module 120; the first output end of the first detection circuit 111 is used to output an open circuit detection signal in the first detection signal to the first input end of the wireless transceiver module 120; the second output end of the first detection circuit 111 is used to output a short circuit detection signal in the first detection signal to the second input end of the wireless transceiver module 120;

[0053] The first end of the second detection circuit 112 is connected to the first end of the battery pack 300, the second end of the second detection circuit 112 is connected to the second end of the battery pack 300, and the output end of the second detection circuit 112 is connected to the second input end of the wireless transceiver module 120; the second detection circuit 112 is used to output the second detection signal to the second input end of the wireless transceiver module 120.

[0054] Furthermore, the first detection circuit 111 includes an open circuit detection subcircuit 1111 and a short circuit detection subcircuit 1112, wherein:

[0055] The first end of the open circuit detection subcircuit 1111 is connected to the first end of the short circuit detection subcircuit 1112 and serves as the first end of the first detection circuit 111; the second end of the open circuit detection subcircuit 1111 is connected to the second end of the short circuit detection subcircuit 1112 and serves as the second end of the first detection circuit 111; the output end of the open circuit detection subcircuit 1111 serves as the first output end of the first detection circuit 111; the output end of the short circuit detection subcircuit 1112 serves as the second output end of the first detection circuit 111.

[0056] Specifically, the open circuit detection subcircuit 1111 and the short circuit detection subcircuit 1112 are arranged in parallel between the first end and the second end of the solar panel 200, and the open circuit detection signal corresponding to the solar panel 200 is determined by the open circuit detection subcircuit 1111, and the short circuit detection signal corresponding to the solar panel 200 is determined by the short circuit detection subcircuit 1112.

[0057] Further, the open circuit detection subcircuit 1111 includes a resistor R1 and a resistor R2, wherein: the resistor R1 and the resistor R2 are connected in series, and an end of the resistor R1 away from the resistor R2 serves as a first end of the open circuit detection subcircuit 1111, an end of the resistor R2 away from the resistor R1 serves as a second end of the open circuit detection subcircuit 1111, and a connection point between the resistor R1 and the resistor R2 serves as an output end of the open circuit detection subcircuit 1111, and the output end of the open circuit detection subcircuit 1111 is used to determine a first midpoint voltage between the resistor R1 and the resistor R2 as the open circuit detection signal; or,

[0058] The open circuit detection subcircuit 1111 includes a resistor R1, a resistor R2 and a first comparator Q1, wherein: the resistor R1 and the resistor R2 are connected in series, and the end of the resistor R1 away from the resistor R2 serves as the first end of the open circuit detection subcircuit 1111, and the end of the resistor R2 away from the resistor R1 serves as the second end of the open circuit detection subcircuit 1111; the connection point between the resistor R1 and the resistor R2 is connected to the first input end of the first comparator Q1, for inputting the first midpoint voltage of the resistor R1 and the resistor R2 to the first input end of the first comparator Q1; the first reference voltage Vref1 is input to the second input end of the first comparator Q1; the output end of the first comparator Q1 serves as the output end of the open circuit detection subcircuit 1111, and the first comparator Q1 is used to output the open circuit detection signal based on the comparison result of the first midpoint voltage and the first reference voltage Vref1.

[0059] Specifically, the open circuit detection signal can be understood as the open circuit voltage of the solar panel 200 , or the open circuit abnormality detection signal of the solar panel 200 .

[0060] (1) When the open circuit detection signal is the open circuit voltage of the solar panel 200, Figure 5 is one of the connection diagrams of the open circuit detection sub-circuit provided in the embodiment of the utility model, that is, the open circuit detection sub-circuit 1111 is as follows Figure 5 As shown, the first midpoint voltage of the connection point after the resistors R1 and R2 are connected in series is the open circuit voltage of the solar panel 200. The open circuit detection subcircuit 1111 uses the first midpoint voltage as an open circuit detection signal and outputs the open circuit detection signal to the first input terminal of the wireless transceiver module 120.

[0061] (2) When the open circuit detection signal is an open circuit abnormality detection signal of the solar panel 200, Figure 6 2 is a second connection diagram of the open circuit detection sub-circuit provided in the embodiment of the present utility model, that is, the open circuit detection sub-circuit 1111 is as shown in FIG. Figure 6As shown, the comparison result of the first midpoint voltage and the first reference voltage Vref1 is the open circuit abnormality detection signal of the solar panel 200. The first midpoint voltage of the connection point after the resistor R1 and the resistor R2 are connected in series is output to the first input terminal of the first comparator Q1. The first comparator Q1 compares the first midpoint voltage with the first reference voltage Vref1. According to the level state of the open circuit abnormality detection signal output by the first comparator Q1, the working state of the solar panel 200 can be determined. For example, if the first midpoint voltage is greater than the first reference voltage Vref1, the first comparator Q1 can output a high level signal, that is, the open circuit abnormality detection signal is a high level signal, indicating that the solar panel 200 is working normally; if the first midpoint voltage is less than or equal to the first reference voltage Vref1, the first comparator Q1 can output a low level signal, that is, the open circuit abnormality detection signal is a low level signal, indicating that the solar panel 200 is working abnormally.

[0062] In addition, in the open circuit detection subcircuit 1111, Figure 5 As shown, a fourth comparator can be set in the wireless transceiver module 120. After receiving the open circuit detection signal, the wireless transceiver module 120 can compare the open circuit detection signal with the first reference signal, and determine the working state of the solar panel 200 according to the level state of the output signal of the fourth comparator. For example, if the open circuit detection signal is greater than the first reference voltage Vref1, the fourth comparator outputs a high level signal, indicating that the solar panel 200 is working normally; if the open circuit detection signal is less than or equal to the first reference voltage Vref1, the fourth comparator outputs a low level signal, indicating that the solar panel 200 is working abnormally. In the open circuit detection subcircuit 1111 as shown Figure 6 As shown, there is no need to set a fourth comparator in the wireless transceiver module 120. The wireless transceiver module 120 can determine the working state of the solar panel 200 according to the level state of the open circuit detection signal.

[0063] Further, the short-circuit detection subcircuit 1112 includes a resistor R3 and an operational amplifier Q3, wherein: one end of the resistor R3 is connected to the first input end of the operational amplifier Q3 and serves as the first end of the short-circuit detection subcircuit 1112, the other end of the resistor R3 is connected to the second input end of the operational amplifier Q3 and serves as the second end of the short-circuit detection subcircuit 1112, the output end of the operational amplifier Q3 serves as the output end of the short-circuit detection subcircuit 1112, and the operational amplifier Q3 is used to determine the voltage difference between the two ends of the resistor R3, and determine the short-circuit detection signal based on the voltage difference;

[0064] or,

[0065] The short-circuit detection subcircuit 1112 includes a resistor R3, an operational amplifier Q3 and a second comparator Q2, wherein: one end of the resistor R3 is connected to the first input end of the operational amplifier Q3 and serves as the first end of the short-circuit detection subcircuit 1112, the other end of the resistor R3 is connected to the second input end of the operational amplifier Q3 and serves as the second end of the short-circuit detection subcircuit 1112, the output end of the operational amplifier Q3 is connected to the first input end of the second comparator Q2, the operational amplifier Q3 is used to output the voltage difference between the two ends of the resistor R3 to the first input end of the second comparator Q2, the second input end of the second comparator Q2 inputs the second reference voltage Vref2, the output end of the second comparator Q2 serves as the output end of the short-circuit detection subcircuit 1112, and the second comparator Q2 is used to determine the short-circuit detection signal based on the comparison result of the voltage difference and the second reference voltage Vref2.

[0066] Specifically, the short-circuit detection signal can be understood as a voltage detection signal related to the short-circuit current of the solar panel 200, rather than the short-circuit current value of the solar panel 200. The voltage detection signal can be understood as a voltage difference between the first end and the second end of the solar panel 200, or a short-circuit abnormality detection signal of the solar panel 200.

[0067] (1) When the short-circuit detection signal is the voltage difference between the first end and the second end of the solar panel 200, Figure 7 is one of the connection diagrams of the short circuit detection sub-circuit provided in the embodiment of the utility model. The short circuit detection sub-circuit 1112 is as shown in FIG. Figure 7 As shown, the voltage difference across the resistor R3 is the voltage difference between the first end and the second end of the solar panel 200, and the quotient of the voltage difference across the resistor R3 and the resistor R3 is the short-circuit current flowing through the resistor R3, that is, the short-circuit current of the solar panel 200. After the voltage across the resistor R3 is respectively input to the first input terminal and the second input terminal of the operational amplifier Q3, the operational amplifier Q3 can output the voltage difference across the resistor R3, and output the voltage difference across the resistor R3 to the third input terminal of the wireless transceiver module 120.

[0068] (2) When the short-circuit detection signal is a short-circuit abnormality detection signal of the solar panel 200, Figure 8 2 is a second connection diagram of the short circuit detection sub-circuit provided in the embodiment of the utility model. The short circuit detection sub-circuit 1112 is as shown in FIG. Figure 8As shown, the comparison result of the voltage difference across the resistor R3 and the second reference voltage Vref2 is the short-circuit abnormality detection signal of the solar panel 200. The voltage difference across the resistor R3 output by the operational amplifier Q3 is output to the first input terminal of the second comparator Q2. The second comparator Q2 compares the voltage difference across the resistor R3 with the second reference voltage Vref2. According to the level state of the short-circuit abnormality detection signal output by the second comparator Q2, the working state of the solar panel 200 can be determined. For example, if the voltage difference across the resistor R3 is greater than or equal to the second reference voltage Vref2, the second comparator Q2 can output a high-level signal, that is, the short-circuit abnormality detection signal is a high-level signal, indicating that the solar panel 200 is working normally; if the voltage difference across the resistor R3 is less than the second reference voltage Vref2, the second comparator Q2 can output a low-level signal, that is, the short-circuit abnormality detection signal is a low-level signal, indicating that the solar panel 200 is working abnormally.

[0069] In addition, in the short circuit detection sub-circuit 1112, Figure 7 As shown, a fifth comparator can be implemented in the wireless transceiver module 120. After receiving the short-circuit detection signal, the wireless transceiver module 120 can compare the short-circuit detection signal with the second reference signal, and determine the working state of the solar panel 200 according to the level state of the output signal of the fifth comparator. For example, if the short-circuit detection signal is greater than or equal to the second reference voltage Vref2, the second comparator Q2 can output a high-level signal, indicating that the solar panel 200 is working normally; if the short-circuit detection signal is less than the second reference voltage Vref2, the second comparator Q2 can output a low-level signal, indicating that the solar panel 200 is working abnormally. In the short-circuit detection subcircuit 1112 as shown Figure 8 As shown, there is no need to set the fifth comparator in the wireless transceiver module 120. The wireless transceiver module 120 can determine the working state of the solar panel 200 according to the level state of the short-circuit detection signal.

[0070] Furthermore, the circuit structure of the second detection circuit 112 is the same as the circuit structure of the open circuit detection sub-circuit 1111 .

[0071] Specifically, the second detection signal output by the second detection circuit 112 can be understood as the battery voltage of the battery pack 300 , or a battery abnormality detection signal of the battery pack 300 .

[0072] (1) When the second detection signal is the battery voltage of the battery pack 300, Fig. 9 is one of the connection diagrams of the second detection circuit provided in the embodiment of the utility model, that is, the second detection circuit 112 is as follows Fig. 9As shown, the second detection circuit 112 includes a resistor R4 and a resistor R5, wherein: the resistor R4 and the resistor R5 are connected in series, and the end of the resistor R4 away from the resistor R5 serves as the first end of the second detection circuit 112, the end of the resistor R5 away from the resistor R4 serves as the second end of the second detection circuit 112, and the connection point of the resistor R4 and the resistor R5 serves as the output end of the second detection circuit 112. The output end of the second detection circuit 112 is used to determine the second midpoint voltage of the resistor R4 and the resistor R5 as the second detection signal. That is, the second midpoint voltage of the connection point after the resistor R4 and the resistor R5 are connected in series is the battery voltage of the battery pack 300. The second detection circuit 112 uses the second midpoint voltage as the second detection signal, and outputs the second detection signal to the second input end of the wireless transceiver module 120.

[0073] (2) When the second detection signal is a battery abnormality detection signal of the battery pack 300, Fig.10 This is the second connection diagram of the second detection circuit provided by the embodiment of the utility model, that is, the second detection circuit 112 is as follows Fig.10 As shown, the second detection circuit 112 includes a resistor R4, a resistor R5 and a third comparator Q4, wherein: the resistor R4 and the resistor R5 are connected in series, and the end of the resistor R4 away from the resistor R5 serves as the first end of the second detection circuit 112, and the end of the resistor R5 away from the resistor R4 serves as the second end of the second detection circuit 112, and the connection point of the resistor R4 and the resistor R5 is connected to the first input end of the third comparator Q4, which is used to input the second midpoint voltage of the resistor R4 and the resistor R5 to the first input end of the third comparator Q4, and the third reference voltage Vref3 is input to the second input end of the third comparator Q4, and the output end of the third comparator Q4 serves as the output end of the second detection circuit 112, and the third comparator Q4 is used to output a battery abnormality detection signal based on the comparison result of the second midpoint voltage and the third reference voltage Vref3. The second midpoint voltage of the connection point of the resistor R4 and the resistor R5 connected in series is output to the first input terminal of the third comparator Q4, and the third comparator Q4 compares the second midpoint voltage with the third reference voltage Vref3. According to the level state of the battery abnormality detection signal output by the third comparator Q4, the working state of the battery pack 300 can be determined. For example, if the second midpoint voltage is greater than the third reference voltage Vref3, the third comparator Q4 outputs a high-level signal, that is, the battery abnormality detection signal is a high-level signal, indicating that the battery pack 300 is working normally; if the second midpoint voltage is less than or equal to the third reference voltage Vref3, the third comparator Q4 can output a low-level signal, that is, the battery abnormality detection signal is a low-level signal, indicating that the battery pack 300 is working abnormally.

[0074] In addition, in the second detection circuit 112 Fig. 9As shown, a sixth comparator may be provided in the wireless transceiver module 120. After receiving the second detection signal, the wireless transceiver module 120 may compare the second detection signal with the third reference signal, and determine the working state of the battery pack 300 according to the level state of the output signal of the sixth comparator. For example, if the second detection signal is greater than the third reference voltage Vref3, the sixth comparator outputs a high level signal, indicating that the battery pack 300 is working normally; if the second detection signal is less than or equal to the third reference voltage Vref3, the sixth comparator outputs a low level signal, indicating that the battery pack 300 is working abnormally. In the second detection circuit 112 as shown in FIG. Fig.10 As shown, there is no need to set the sixth comparator in the wireless transceiver module 120. The wireless transceiver module 120 can determine the working state of the battery pack 300 according to the level state of the second detection signal.

[0075] Optionally, the wireless transceiver module 120 operates in a low power consumption mode. The wireless transceiver module 120 may be an MCU (Micro Controller Unit), which may include a Bluetooth module, an RF433 wireless transceiver module, and an E2PROM (Electrically-Erasable Programmable Read-Only Memory), etc. The E2PROM is an independent external memory, and after the wireless transceiver module 120 receives the first detection signal and the second detection signal, the first detection signal and the second detection signal may be stored in the E2PROM. The wireless transceiver module 120 may communicate periodically with the main control module 140, that is, send a periodic communication signal to the main control module 140, and the periodic communication signal may be a heartbeat signal or an interrupt signal, etc.

[0076] In addition, the wireless transceiver module 120 can send periodic wireless signals to the outside for communication with the remote terminal 400. Fig.11 FIG. 1 is a flow chart of establishing a connection between a wireless transceiver module and a remote terminal provided by an embodiment of the utility model, such as Fig.11 As described above, the wireless transceiver module 120 can send periodic wireless signals to the outside and determine whether there is a remote terminal 400 connected. If there is a remote terminal 400 to establish a communication connection, the wireless transceiver module 120 can send a periodic communication signal, an open circuit detection signal, a short circuit detection signal and the battery voltage of the battery pack 300 to the connected remote terminal 400, so that the maintenance personnel can perform subsequent operation and maintenance operations through the information received by the remote terminal 400. If there is no remote terminal 400 connected, the periodic wireless signal continues to be sent to the outside.

[0077] Furthermore, the independent power supply module 130 is also connected to the solar panel 200 and the battery pack 300, and the independent power supply module 130 is used for charging based on the solar panel 200 or the battery pack 300. The independent power supply module 130 includes an independent battery and a power supply circuit. When the solar panel 200 or the battery pack 300 works normally, the solar panel 200 or the battery pack 300 can charge the independent battery through the power supply circuit. When the solar panel 200 or the battery pack 300 works abnormally, the independent battery can power the wireless transceiver module 120 and the main control module 140 through the power supply circuit.

[0078] Further, Fig.12 This is the second structural diagram of the operation and maintenance controller 100 provided in the embodiment of the utility model, such as Fig.12 As shown, the operation and maintenance controller 100 also includes a communication module 150, and the communication module 150 is respectively connected to the server 500, the external load, the remote terminal 400, the main control module 140, the independent power supply module 130 and the wireless transceiver module 120.

[0079] Specifically, when the solar panel 200 or the battery pack 300 is working abnormally, the independent power supply module 130 can supply power to the communication module 150, and the communication module 150 can communicate with the wireless transceiver module 120. For example, the communication module 150 interacts with the wireless transceiver module 120 through UART (Universal Asynchronous Receiver / Transmitter). The communication module 150 can provide a network for an external load, and can also upload the corresponding information of the main control module 140 and the wireless transceiver module 120 to the server 500 for storage. For example, the first detection signal and the second detection signal received by the wireless transceiver module 120, as well as the regular communication signal between the wireless transceiver module 120 and the main control module 140 are uploaded to the server 500. In addition, in addition to the wireless transceiver module 120 being able to interact with the remote terminal 400, the communication module 150 can also interact with the remote terminal 400, that is, the communication module 150 can send the first detection signal, the second detection signal received by the wireless transceiver module 120, and the periodic communication signal between the wireless transceiver module 120 and the main control module 140 to the remote terminal 400.

[0080] Optionally, the external load may be an IPC (Internet Protocol Camera). The communication module 150 may be a 4G module, a 5G module, or the like.

[0081] Furthermore, if Fig.12 As shown, the operation and maintenance controller 100 also includes: a collection module 160, a charge and discharge control module 170 and an external output module 180, wherein:

[0082] The acquisition module 160 is connected to the external load, the main control module 140, the solar panel 200 and the battery pack 300, and the acquisition module 160 is used to respectively acquire power information corresponding to the solar panel 200, the battery pack 300 and the external load;

[0083] The charge and discharge control module 170 is connected to the main control module 140 and the battery pack 300. The main control module 140 determines a first control signal based on power information corresponding to the battery pack 300, and controls the on and off state of the charge and discharge control module 170 based on the first control signal.

[0084] The external output module 180 is connected to the main control module 140 and the external load respectively. The main control module 140 determines a second control signal based on power information corresponding to the external load, and controls the on / off state of the external output module 180 based on the second control signal.

[0085] Optionally, the power information corresponding to the solar panel 200 includes the voltage, charge and discharge voltage, and charge and discharge current corresponding to the solar panel 200. The power information corresponding to the battery pack 300 includes the voltage, charge and discharge voltage, and charge and discharge current corresponding to the battery pack 300. The power information corresponding to the external load includes the current of the external load.

[0086] It should be noted that the battery voltage of the battery pack 300 collected by the second detection circuit 112 in the abnormality detection module 110 serves as backup data for the battery voltage corresponding to the battery pack 300 collected by the acquisition module 160. When the solar panel 200 or the battery pack 300 operates abnormally, the abnormality detection module 110 can collect the battery voltage of the battery pack 300 for operation and maintenance, thereby reducing dependence on the solar panel 200 and the battery pack 300.

[0087] Optionally, the charge and discharge control module 170 includes a charge and discharge switch, and the first control information generated by the main control module 140 is used to control the switch state of the charge and discharge switch, thereby controlling the on and off state of the charge and discharge control module 170, and further controlling the charge and discharge of the battery pack 300. The external output module 180 includes an external output switch, and the main control module 140 can generate a second control signal according to the current corresponding to the external load, and control the switch state of the external output switch through the second control signal, thereby controlling the on and off state of the external output module 180.

[0088] For example, taking the operation and maintenance controller 100 for fault detection as an example, Fig.13 is a schematic diagram of a fault detection process provided by an embodiment of the utility model, such as Fig.13As shown, the wireless transceiver module 120 first determines whether the main control module 140 and the wireless transceiver module 120 can perform periodic interaction normally according to whether the periodic communication signal sent by the main control module 140 is received. If the periodic communication signal sent by the main control module 140 is received, it indicates that the main control module 140 and the wireless transceiver module 120 can perform periodic interaction normally. At this time, the received periodic communication signal can be saved. If the periodic communication signal sent by the main control module 140 is not received, or the number of periodic communication signals sent by the main control module 140 does not meet the requirements, it indicates that the main control module 140 and the wireless transceiver module 120 cannot perform periodic interaction normally. At this time, the open circuit detection signal, the short circuit detection signal and the battery voltage of the battery pack 300 can be collected respectively by the abnormal detection module 110, and further judge whether the solar panel 200 is working normally according to the open circuit detection signal and the short circuit detection signal, or judge whether the battery pack 300 is working normally according to the battery voltage of the battery pack 300. If the solar panel 200 or the battery pack 300 is working properly, it indicates that the main control module 140 or the control circuit corresponding to the main control module 140 is faulty. At this time, the wireless transceiver module 120 can send a reset control signal to the main control module 140 to reset the main control module 140, so that the main control module 140 can resume normal operation, and upload the regular communication signal, the open circuit detection signal, the short circuit detection signal, the battery voltage of the battery pack 300 and the fault detection result to the server 500 through the communication module 150. If both the solar panel 200 and the battery pack 300 are faulty, the wireless transceiver module 120 can control the independent power supply module 130 to supply power to the communication module 150, so as to upload the regular communication signal, the open circuit detection signal, the short circuit detection signal, the battery voltage of the battery pack 300 and the fault detection result to the server 500 through the communication module 150.

[0089] The operation and maintenance controller provided by the embodiment of the utility model generates a first detection signal corresponding to the solar panel and a second detection signal corresponding to the battery pack through the abnormal detection module, and sends the first detection signal and the second detection signal to the wireless transceiver module. When the solar panel, the battery pack or the independent power supply battery powers the wireless transceiver module, the wireless transceiver module can send the first detection signal, the second detection signal and the regular communication signal for interacting with the main control module to the remote terminal after connecting to the remote terminal, thereby avoiding the maintenance personnel from relying on auxiliary equipment to collect on-site detection information for subsequent operation and maintenance, improving the convenience of operation and maintenance of the solar control system, and at the same time, avoiding the detection cost caused by the auxiliary equipment, thereby reducing the operation and maintenance cost.

[0090] The present utility model also provides a solar power supply system 700. Fig.14 is a schematic diagram of the structure of a solar power supply system 700 provided in an embodiment of the present utility model, such as Fig.14As shown, the solar power supply system 700 includes a solar panel 200, a battery pack 300 and an operation and maintenance controller 100 as described in any of the above items, the solar panel 200 and the battery pack 300 are both connected to the operation and maintenance controller 100, and the solar panel 200 is connected to the battery pack 300.

[0091] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. An operation and maintenance controller, characterized in that: include: Abnormal detection module, wireless transceiver module, independent power supply module and main control module, including: The abnormality detection module is connected to the solar panel, the battery pack and the wireless transceiver module respectively, and is used to generate a first detection signal corresponding to the solar panel and a second detection signal corresponding to the battery pack, and send the first detection signal and the second detection signal to the wireless transceiver module; The independent power supply module is connected to the main control module and the wireless transceiver module respectively, and the independent power supply module is used to supply power to the main control module and the wireless transceiver module in case of failure of the solar panel and the battery pack; The wireless transceiver module is connected to the main control module, and the wireless transceiver module is communicatively connected to a remote terminal within a preset distance. The wireless transceiver module is used to send the first detection signal, the second detection signal, and the regular communication signal between the wireless transceiver module and the main control module to the remote terminal.

2. The operation and maintenance controller according to claim 1, characterized in that: The abnormality detection module includes a first detection circuit and a second detection circuit, wherein: The first end of the first detection circuit is connected to the first end of the solar panel, the second end of the first detection circuit is connected to the second end of the solar panel, the first output end of the first detection circuit is connected to the first input end of the wireless transceiver module, and the second output end of the first detection circuit is connected to the third input end of the wireless transceiver module; the first output end of the first detection circuit is used to output an open circuit detection signal in the first detection signal to the first input end of the wireless transceiver module; the second output end of the first detection circuit is used to output a short circuit detection signal in the first detection signal to the second input end of the wireless transceiver module; The first end of the second detection circuit is connected to the first end of the battery pack, the second end of the second detection circuit is connected to the second end of the battery pack, and the output end of the second detection circuit is connected to the second input end of the wireless transceiver module; the second detection circuit is used to output the second detection signal to the second input end of the wireless transceiver module.

3. The operation and maintenance controller according to claim 2, characterized in that: The first detection circuit includes an open circuit detection subcircuit and a short circuit detection subcircuit, wherein: The first end of the open circuit detection subcircuit is connected to the first end of the short circuit detection subcircuit and serves as the first end of the first detection circuit. The second end of the open circuit detection subcircuit is connected to the second end of the short circuit detection subcircuit and serves as the second end of the first detection circuit. The output end of the open circuit detection subcircuit serves as the first output end of the first detection circuit; the output end of the short circuit detection subcircuit serves as the second output end of the first detection circuit.

4. The operation and maintenance controller according to claim 3, characterized in that: The open circuit detection subcircuit comprises a resistor R1 and a resistor R2, wherein: the resistor R1 and the resistor R2 are connected in series, and an end of the resistor R1 away from the resistor R2 serves as a first end of the open circuit detection subcircuit, an end of the resistor R2 away from the resistor R1 serves as a second end of the open circuit detection subcircuit, and a connection point between the resistor R1 and the resistor R2 serves as an output end of the open circuit detection subcircuit, and the output end of the open circuit detection subcircuit is used to determine a first midpoint voltage between the resistor R1 and the resistor R2 as the open circuit detection signal; or, The open circuit detection subcircuit includes a resistor R1, a resistor R2 and a first comparator, wherein: the resistor R1 and the resistor R2 are connected in series, and the end of the resistor R1 away from the resistor R2 serves as the first end of the open circuit detection subcircuit, and the end of the resistor R2 away from the resistor R1 serves as the second end of the open circuit detection subcircuit, and the connection point of the resistor R1 and the resistor R2 is connected to the first input end of the first comparator, which is used to input the first midpoint voltage of the resistor R1 and the resistor R2 to the first input end of the first comparator, and the first reference voltage is input to the second input end of the first comparator. The output end of the first comparator serves as the output end of the open circuit detection subcircuit, and the first comparator is used to output the open circuit detection signal based on the comparison result of the first midpoint voltage and the first reference voltage.

5. The operation and maintenance controller according to claim 3, characterized in that: The short circuit detection subcircuit comprises a resistor R3 and an operational amplifier, wherein: one end of the resistor R3 is connected to a first input end of the operational amplifier and serves as a first end of the short circuit detection subcircuit, the other end of the resistor R3 is connected to a second input end of the operational amplifier and serves as a second end of the short circuit detection subcircuit, the output end of the operational amplifier serves as an output end of the short circuit detection subcircuit, and the operational amplifier is used to determine a voltage difference between two ends of the resistor R3, and determine the short circuit detection signal based on the voltage difference; or, The short-circuit detection subcircuit includes a resistor R3, an operational amplifier and a second comparator, wherein: one end of the resistor R3 is connected to the first input end of the operational amplifier and serves as the first end of the short-circuit detection subcircuit, the other end of the resistor R3 is connected to the second input end of the operational amplifier and serves as the second end of the short-circuit detection subcircuit, the output end of the operational amplifier is connected to the first input end of the second comparator, the operational amplifier is used to output the voltage difference between the two ends of the resistor R3 to the first input end of the second comparator, the second input end of the second comparator inputs a second reference voltage, the output end of the second comparator serves as the output end of the short-circuit detection subcircuit, and the second comparator is used to determine the short-circuit detection signal based on the comparison result of the voltage difference and the second reference voltage.

6. The operation and maintenance controller according to claim 3 or 4, characterized in that: The circuit structure of the second detection circuit is the same as the circuit structure of the open circuit detection sub-circuit.

7. The operation and maintenance controller according to any one of claims 1 to 5, characterized in that: The independent power supply module is also connected to the solar panel and the battery pack, and the independent power supply module is used for charging based on the solar panel or the battery pack.

8. The operation and maintenance controller according to any one of claims 1 to 5, characterized in that: It also includes a communication module, which is respectively connected to the server, the external load, the remote terminal, the main control module, the independent power supply module and the wireless transceiver module.

9. The operation and maintenance controller according to any one of claims 1 to 5, characterized in that: Also includes: Acquisition module, charge and discharge control module and external output module, including: The acquisition module is connected to the external load, the main control module, the solar panel and the battery pack, and is used to respectively acquire power information corresponding to the solar panel, the battery pack and the external load; The charge and discharge control module is connected to the main control module and the battery pack, and the main control module determines a first control signal based on the power information corresponding to the battery pack, and controls the on and off state of the charge and discharge control module based on the first control signal; the external output module is respectively connected to the main control module and the external load, and the main control module determines a second control signal based on the power information corresponding to the external load, and controls the on and off state of the external output module based on the second control signal.

10. A solar power supply system, characterized in that: It comprises a solar panel, a battery pack and an operation and maintenance controller as described in any one of claims 1 to 9, wherein the solar panel and the battery pack are both connected to the operation and maintenance controller, and the solar panel is connected to the battery pack.

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