A power supply method, device and medium of a power monitoring device

Abstract

The application discloses a power supply method and device of a power monitoring device and a medium, and aims to solve the technical problem of complex logic control and high cost in the prior art, in which a super capacitor and a storage battery each correspond to a set of charge and discharge control circuit. The method comprises the following steps: a logic control unit controls an electric parameter acquisition circuit to acquire voltage information of the super capacitor and the lithium battery and compare the voltage information; when the voltage value of the super capacitor is greater than the voltage value of the lithium battery and greater than a preset low voltage threshold, a loop between the super capacitor and the power monitoring device is turned on through a switch control circuit; when the voltage value of the super capacitor is less than a prohibited discharge voltage threshold, a loop between the lithium battery and the power monitoring device is turned on; the loop between the super capacitor and the solar panel is turned on through the switch control circuit to charge the super capacitor through the solar panel, and when the voltage value of the super capacitor is greater than the voltage value of the lithium battery within a preset time period, the super capacitor continues to serve as a power supply device of the power monitoring device, and the power supply subject is autonomously selected.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of solar power generation, and particularly relates to a power supply method of a power monitoring device, equipment and a medium. BACKGROUND

[0002] At present, the power monitoring device for intelligent inspection of a power transmission line is generally installed on an outdoor power transmission tower, and some need to be installed in an unmanned area. The working environment is relatively harsh, and the reliability and endurance of the power supply system are important factors restricting the reliable work. When the power monitoring device is powered by a gel storage battery, the gel storage battery has poor high and low temperature performance, has a shallow charge memory feature, has a short service life, and has a large maintenance workload. When the power monitoring device is powered by a lithium battery, the charging and discharging and capacity of the lithium battery are greatly affected by temperature, the charging is relatively slow, and in continuous rainy weather, the lithium battery is damaged due to over-discharging, affecting the normal operation of the equipment. The service life of the lithium battery is 400-500 charge and discharge cycles, and the workload and cost of later maintenance are large.

[0003] The existing power monitoring device adopts a technical scheme of a super capacitor plus a gel storage battery to prolong the service life of the gel storage battery. However, the super capacitor and the gel storage battery in the prior art correspond to a set of charge and discharge management circuit respectively, the logic control of the system is relatively complex, and the design cost of the two sets of charge and discharge control circuits is high. SUMMARY

[0004] The power supply method, equipment and medium of the power monitoring device provided by the embodiments of the present application solve the technical problem that in the existing power monitoring device, the super capacitor and the gel storage battery correspond to a set of charge and discharge management circuit respectively, the logic control of the corresponding system is relatively complex, and the implementation cost is high.

[0005] In one aspect, the power supply method of the power monitoring device provided by the embodiments of the present application is applied to a power supply system of a power monitoring device, and the power supply system includes a solar panel, a super capacitor, a lithium battery, a charge and discharge control circuit, a logic control unit and the power monitoring device, and includes the following steps.

[0006] The logic control unit controls an electric quantity acquisition circuit in the charge and discharge control circuit, acquires voltage information corresponding to the super capacitor and the lithium battery, and compares the voltage value of the super capacitor with the voltage value of the lithium battery through a voltage comparator;

[0007] When the voltage value of the super capacitor is greater than the voltage value of the lithium battery and greater than a preset low voltage threshold, a switch control circuit in the charge and discharge control circuit is used to control the conduction of a loop between the super capacitor and the power monitoring device, so that the power monitoring device is powered by the super capacitor;

[0008] when the voltage value of the super capacitor is less than the discharge prohibition voltage threshold, controlling, by the switch control circuit, the loop between the lithium battery and the power monitoring device to be conducted, so as to supply power to the power monitoring device by the lithium battery;

[0009] controlling, by the switch control circuit, the loop between the super capacitor and the solar panel to be conducted, so as to charge the super capacitor by the solar panel, and when the voltage value of the super capacitor is greater than the voltage value of the lithium battery within a preset time period, determining that the super capacitor continues to serve as the power supply device of the power monitoring device.

[0010] In an implementation manner of the present application, before the logical control unit controls the electric parameter acquisition circuit in the charge-discharge control circuit to acquire the voltage information corresponding to the super capacitor and the lithium battery, the method further comprises:

[0011] acquiring, by the physical parameter acquisition circuit in the charge-discharge control circuit, the temperature information of the super capacitor and the lithium battery, and determining whether the temperature of the super capacitor and the temperature of the lithium battery are within a preset temperature interval according to the temperature information; wherein the preset temperature interval refers to a standard temperature between a preset high temperature threshold and a preset low temperature threshold.

[0012] when the temperature of the super capacitor or the lithium battery is not within the preset temperature interval, cutting off the loop between the super capacitor or the lithium battery and the power monitoring device and the solar panel, so as to stop the charge-discharge of the super capacitor or the lithium battery.

[0013] In an implementation manner of the present application, after the voltage value of the super capacitor is less than the discharge prohibition voltage threshold, the switch control circuit is controlled to conduct the loop between the lithium battery and the power monitoring device, so as to supply power to the power monitoring device by the lithium battery, the method further comprises:

[0014] when the output power of the solar panel is less than a preset charging power, determining that the lithium battery continues to serve as the power supply device of the power monitoring device;

[0015] when the output power of the solar panel is greater than the preset charging power, conducting the loop between the solar panel and the lithium battery and the super capacitor respectively, so as to charge the lithium battery and the super capacitor by the solar panel;

[0016] When the voltage value of the super capacitor is greater than the discharge prohibition voltage threshold value and greater than the voltage value of the lithium battery within the preset time period, the switch control circuit is controlled to turn on a loop between the super capacitor and the power monitoring device, so as to supply power to the power monitoring device by the super capacitor.

[0017] In an implementation manner of the present application, before the switch control circuit is controlled to turn on the loop between the super capacitor and the solar panel to charge the super capacitor by the solar panel, the method further comprises:

[0018] The voltage information corresponding to the super capacitor is collected by the electric parameter acquisition circuit, and whether the voltage value of the super capacitor is less than the preset low voltage threshold value is determined according to the voltage information.

[0019] The output power of the solar panel in the pre-charging circuit is adjusted by the common charging control circuit in the charge-discharge control circuit, and when the voltage value of the super capacitor is less than the preset low voltage threshold value, the super capacitor is controlled to enter the pre-charging circuit to pre-charge the super capacitor for a preset time length according to the adjusted output power of the solar panel.

[0020] In an implementation manner of the present application, the method further comprises:

[0021] The current information corresponding to the super capacitor and the lithium battery is collected by the electric parameter acquisition circuit, and when the charge-discharge current value of the super capacitor or the lithium battery is greater than a preset maximum charging current threshold value, the loop between the super capacitor or the lithium battery and the power monitoring device and the solar panel is cut off, so that the super capacitor or the lithium battery stops charging and discharging.

[0022] During the charging of the super capacitor and the lithium battery, the voltage information corresponding to the super capacitor and the lithium battery is collected by the electric parameter acquisition circuit, and when the voltage value of the super capacitor or the lithium battery is greater than a preset high voltage threshold value, the loop between the super capacitor or the lithium battery and the solar panel is cut off, so that the super capacitor or the lithium battery stops charging.

[0023] In an implementation manner of the present application, the method further comprises:

[0024] The electric quantity, voltage, current, output power and temperature of the super capacitor and the lithium battery are calculated by the logic control unit.

[0025] When the lithium battery is discharging, the health state of the lithium battery is determined according to the power, voltage, current, output power and temperature of the lithium battery, and the health state is transmitted to the power supply system through a bus;

[0026] The health state includes a normal state and an abnormal state.

[0027] In an implementation manner of the present application, when the logical control unit starts to work, the method further includes:

[0028] The low voltage threshold, the high voltage threshold, the minimum charging current threshold, the maximum charging current threshold, the low temperature threshold and the high temperature threshold are set for the super capacitor and the lithium battery through the logical control unit, so as to protect the super capacitor and the lithium battery.

[0029] In an implementation manner of the present application, further includes:

[0030] The initial voltage of the super capacitor is determined as zero;

[0031] When the power monitoring device starts to be powered, the loop between the lithium battery and the power monitoring device is turned on through the switch control circuit, so that the power monitoring device is powered by the lithium battery, and the loop between the super capacitor and the solar panel is turned on, so that the super capacitor is charged by the solar panel.

[0032] On the other hand, the present application also provides a power supply device of a power monitoring device, which is applied to a power supply system of a power monitoring device, and the power supply system includes a solar panel, a super capacitor, a lithium battery, a charge-discharge control circuit, a logical control unit and a power monitoring device. The device includes:

[0033] At least one processor;

[0034] and a memory in communication connection with the at least one processor;

[0035] The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the power supply method of the power monitoring device as described above.

[0036] On the other hand, the present application also provides a non-volatile computer storage medium, which stores computer executable instructions, and is applied to a power supply system of a power monitoring device. The power supply system includes a solar panel, a super capacitor, a lithium battery, a charge-discharge control circuit, a logical control unit and a power monitoring device. The computer executable instructions are set to:

[0037] The application provides a power supply method of a power monitoring device.

[0038] The application provides a power supply method of a power monitoring device, a device, equipment and a medium, and at least has the following beneficial effects:

[0039] The real-time voltage of the super capacitor and the lithium battery can be obtained through the electric parameter acquisition circuit in the charge-discharge control circuit, when the voltage value of the super capacitor is greater than the voltage value of the lithium battery and greater than the preset low voltage threshold, the super capacitor can be controlled to supply power to the power monitoring device, when the voltage value of the super capacitor supplied by the super capacitor is less than the voltage value of the lithium battery, the lithium battery can be controlled to supply power to the power monitoring device, when the lithium battery supplies power to the power monitoring device, the super capacitor is charged through the solar panel until the voltage value of the super capacitor is greater than the voltage value of the lithium battery, and the super capacitor is controlled to supply power to the power monitoring device again, thereby increasing the overall endurance time of the power monitoring device; the charge-discharge main body can be autonomously selected according to the voltage comparison result of the super capacitor and the lithium battery, the charging circuit is adapted to the corresponding main body, the charge-discharge control of the super capacitor and the lithium battery is realized through one set of charge-discharge control circuit, thereby avoiding the complex logic control of two sets of charge-discharge control circuits and saving the power supply cost of the power monitoring device.

[0040] Moreover, the power monitoring device is mainly supplied with power by the super capacitor, and the lithium battery is only used as a backup power supply device when the voltage of the super capacitor is low, so that the service life of the lithium battery can be prolonged, the later maintenance period can be prolonged, and the later maintenance cost can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0041] The accompanying drawings, which are included to provide a further understanding of the application and constitute a part of this application, illustrate certain illustrative embodiments of the application and together with the description serve to explain the application. In the drawings:

[0042] Figure 1 A flowchart of a power supply method of a power monitoring device provided by the application embodiment is shown in the figure;

[0043] Figure 2 A power supply system block diagram provided by the application embodiment is shown in the figure;

[0044] Figure 3 A charge-discharge control circuit block diagram provided by the application embodiment is shown in the figure;

[0045] Figure 4 An internal structure schematic diagram of a power supply equipment of a power monitoring device provided by the application embodiment is shown in the figure. DETAILED DESCRIPTION

[0046] In order to make the purposes, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described below in connection with specific embodiments of the present application and corresponding drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0047] The embodiments of the present application provide a power supply method of a power monitoring device, equipment and medium. The voltage of the super capacitor and the lithium battery can be obtained in real time through the electric parameter acquisition circuit in the charge-discharge control circuit, and the charge-discharge main body is autonomously selected according to the voltage comparison result of the super capacitor and the lithium battery, so that the charging circuit is adapted to the corresponding main body. The charge-discharge control of the super capacitor and the lithium battery is realized through a set of charge-discharge control circuit, thereby avoiding the complex logic control of two sets of charge-discharge control circuits and saving the power supply cost of the power monitoring device. The technical problem of the existing power monitoring device that the super capacitor and the gel storage battery correspond to a set of charge-discharge management circuit respectively, the logic control of the corresponding system is relatively complex, and the implementation cost is relatively high is solved.

[0048] Figure 1 A flowchart of a power supply method of a power monitoring device provided by the embodiments of the present application is shown in FIG. 1. As shown in FIG. 1, the power supply method of the power monitoring device provided by the embodiments of the present application can mainly include the following steps: Figure 1

[0049] Step 101: The logic control unit controls the electric parameter acquisition circuit in the charge-discharge control circuit to acquire the voltage information corresponding to the super capacitor and the lithium battery, and compares the voltage value of the super capacitor with the voltage value of the lithium battery through the voltage comparator.

[0050] The super capacitor is also known as chemical capacitor. Unlike the traditional chemical power supply, the super capacitor is a power supply with special performance between the traditional capacitor and the battery, mainly relying on double electric layer and redox pseudo-capacitive charge to store electric energy. The super capacitor with hundreds of farads can be used as a battery in some low-power places. The energy storage process of the super capacitor does not involve chemical reaction, and this energy storage process is reversible, so the super capacitor can repeatedly charge and discharge, and the cycle life can reach hundreds of thousands of times. However, the disadvantages of the super capacitor are also very obvious, for example, the voltage of the super capacitor changes linearly with the charge and discharge, the capacity is very small, and it cannot meet the long-term stable operation of the power monitoring device in the outdoor or even unattended area.

[0051] ​Lithium battery is a kind of battery with lithium metal or lithium alloy as positive / negative electrode material and using non-aqueous electrolyte solution, the service life is 400-500 times of charge-discharge cycle, but the charge and discharge and capacity of lithium battery are greatly affected by temperature, the charging is relatively slow, and in continuous rainy weather, lithium battery damage will be caused by over-discharge, affecting the normal operation of equipment.

[0052] The present application combines supercapacitors and lithium batteries based on the advantages and disadvantages of supercapacitors and lithium batteries, and is used for power supply of the power monitoring device, which can not only alleviate the small capacity of supercapacitors through lithium batteries, but also prolong the service life of lithium batteries through supercapacitors, and the combination of supercapacitors and lithium batteries can increase the endurance time of the power monitoring device. The present application discloses a power supply method of a power monitoring device, which is applied to a power supply system of the power monitoring device, and the power supply system comprises a solar panel, a supercapacitor, a lithium battery, a charge-discharge control circuit, a logic control unit and a power monitoring device.

[0053] Figure 2 The power supply system block diagram provided by the embodiment of the present application is shown in Figure 1. Figure 2 As shown in Figure 1, the power supply system in the present application is composed of six parts, i.e. a solar panel, a supercapacitor, a lithium battery, a charge-discharge control circuit, a logic control unit and a power monitoring device. The logic control unit controls the charge-discharge control circuit to realize charging of the supercapacitor or the lithium battery by the solar panel, and controls the charge-discharge control circuit to realize power supply of the power monitoring device by the supercapacitor or the lithium battery. Through a set of charge-discharge control circuit, the charge-discharge theme can be selected autonomously according to the actual situation of the supercapacitor and the lithium battery, the charge-discharge control is realized, the logic control of the charge-discharge control is simplified, and the implementation cost of power supply for the power monitoring device is saved.

[0054] The logic control unit in the power supply system of the power monitoring device in the present application controls the electric parameter acquisition circuit in the charge-discharge control circuit to acquire the voltage information corresponding to the supercapacitor and the lithium battery in the power supply system in real time, so as to compare the voltage value of the supercapacitor with the voltage value of the lithium battery, determine the corresponding comparison result, and then perform subsequent operation according to the comparison result.

[0055] In an embodiment of the present application, before the logic control unit controls the electric parameter acquisition circuit in the charge-discharge control circuit to acquire the voltage information corresponding to the supercapacitor and the lithium battery, the logic control unit will also control the physical parameter acquisition circuit in the charge-discharge control circuit to acquire the temperature information of the supercapacitor and the lithium battery, and then determine whether the temperature of the supercapacitor and the temperature of the lithium battery are in the preset temperature range according to the acquired temperature information.

[0056] It should be noted that the preset temperature range in the embodiments of the present application refers to the standard temperature between the preset high temperature threshold and the preset low temperature threshold. Specifically, the high temperature threshold and the low temperature threshold can be selected according to the actual situation, and the present application does not make specific limitations.

[0057] When the temperature of the super capacitor or the lithium battery is not in the preset temperature range, the loop between the super capacitor and the power monitoring device and the solar panel is cut off, so that the super capacitor stops charging and discharging, or the loop between the lithium battery and the power monitoring device and the solar panel is cut off, so that the lithium battery stops charging and discharging.

[0058] In an embodiment of the present application, the logic control circuit also controls the electric parameter acquisition circuit in the charge and discharge control circuit to collect the current information corresponding to the super capacitor and the lithium battery, and when it is determined according to the collected current information that the charging and discharging current value of the super capacitor or the lithium battery is greater than the preset maximum charging current threshold, the loop between the super capacitor and the power monitoring device and the solar panel is cut off, so that the super capacitor stops charging and discharging, or the loop between the lithium battery and the power monitoring device and the solar panel is cut off, so that the lithium battery stops charging and discharging.

[0059] In the process of charging the super capacitor and the lithium battery, the logic control unit controls the electric parameter acquisition circuit in the charge and discharge control circuit to collect the voltage information corresponding to the super capacitor and the lithium battery, and when the voltage value of the super capacitor or the lithium battery is greater than the preset high voltage threshold, the loop between the super capacitor and the solar panel is cut off, so that the super capacitor stops charging, or the loop between the lithium battery and the solar panel is cut off, so that the lithium battery stops charging. In this way, overvoltage and overcurrent protection can be performed on the super capacitor and the lithium battery, avoiding damage to the super capacitor and the lithium battery, and thereby prolonging the service life of the super capacitor and the lithium battery.

[0060] Figure 3 The charge and discharge control circuit block diagram provided in the embodiments of the present application is shown in Figure 2. As shown in Figure 2, the charge and discharge control circuit comprises a logic control unit, a charge and discharge control circuit, a super capacitor, a lithium battery, a power monitoring device and a solar panel. Figure 3As shown, the charge and discharge control circuit in the present application includes an electrical parameter acquisition circuit, a physical parameter acquisition circuit, a pre-charge circuit, a common charge control circuit, a switch control circuit, a supercapacitor charge and discharge circuit, a lithium battery charge and discharge circuit, and a safety protection circuit. The logic control unit can control the electrical parameter acquisition circuit in the charge and discharge control circuit to obtain electrical parameter information such as voltage and current of the supercapacitor and the lithium battery, and control the physical parameter acquisition circuit to obtain physical parameter information such as temperature of the supercapacitor and the lithium battery. The pre-charge circuit is used to pre-charge the supercapacitor or lithium battery with a lower voltage. The public charge control circuit is used to adjust the output power of the solar panel to suit different charging subjects. The corresponding power supply subject is selected through the switch control circuit, and the supercircuit charge and discharge circuit is selected to charge and discharge the supercapacitor, or the lithium battery charge and discharge circuit is selected to charge and discharge the lithium battery. In addition, in dangerous situations such as overvoltage, overcurrent, or high and low temperature of the supercapacitor and the lithium battery, the safety protection circuit is used to protect the safety of the supercapacitor and the lithium battery, thereby extending the service life of the supercapacitor and the lithium battery.

[0061] Step 102: When the voltage value of the supercapacitor is greater than the voltage value of the lithium battery and greater than a preset low-voltage threshold, the switch control circuit in the charge and discharge control circuit controls the circuit between the supercapacitor and the power monitoring device to be connected, so as to power the power monitoring device through the supercapacitor.

[0062] When, based on the comparison results of the voltage values ​​of the supercapacitor and the lithium battery, it is determined that the voltage value of the supercapacitor is greater than the voltage value of the lithium battery, and the voltage value of the supercapacitor is greater than the preset low-voltage threshold, the logic control unit controls the switch control circuit in the charge and discharge control circuit to connect the loop between the supercapacitor and the power monitoring device, thereby enabling the power monitoring device to be powered by the supercapacitor.

[0063] In one embodiment of the present application, when the logic control unit starts working, the power supply system sets the corresponding low voltage threshold, high voltage threshold, minimum charging current threshold, maximum charging current threshold, low temperature threshold and high temperature threshold for the supercapacitor and lithium battery through the logic control unit, thereby protecting the supercapacitor and lithium battery, preventing the supercapacitor and lithium battery from being damaged due to overvoltage, overcurrent or high and low temperature, and extending the service life of the supercapacitor and lithium battery.

[0064] In an embodiment of the present application, when the power supply system starts to supply power to the power monitoring device, the initial voltage of the super capacitor is zero by default, and the logic control unit controls the switch control circuit in the charge and discharge control circuit to turn on the loop between the lithium battery and the power monitoring device, so that the power monitoring device can be powered by the lithium battery. At the same time, the logic control unit also controls the switch control circuit in the charge and discharge control circuit to turn on the loop between the super capacitor and the solar panel, so that the super capacitor can be charged by the solar panel. In this way, the super capacitor can be charged as soon as possible, and the power monitoring device can be powered by the main power supply system of the super capacitor, so that the lithium battery only serves as a backup power supply device to supply power when the super capacitor is insufficient, thereby reducing the charge and discharge time and frequency of the lithium battery and greatly prolonging the service life of the lithium battery.

[0065] Step 103: When the voltage value of the super capacitor is less than the discharge prohibition voltage threshold, the loop between the lithium battery and the power monitoring device is turned on by the switch control circuit to supply power to the power monitoring device by the lithium battery.

[0066] When the super capacitor supplies power to the power monitoring device until the voltage value is less than the discharge prohibition voltage threshold, the logic control unit controls the switch control circuit in the charge and discharge control circuit to turn on the loop between the lithium battery and the power monitoring device, so that the power monitoring device can be powered by the lithium battery. It should be noted that the present application mainly supplies power to the power monitoring device by the super capacitor, and the lithium battery only serves as a backup power supply device for the power monitoring device. The lithium battery is used to supply power to the power monitoring device for a short time when the super capacitor is insufficient, thereby prolonging the overall endurance time of the power monitoring device.

[0067] In one embodiment of the present application, when the voltage value of the super capacitor is less than the discharge prohibition threshold, the switching control circuit controls the circuit between the lithium battery and the power monitoring device to be conductive, so that the lithium battery supplies power to the power monitoring device. When the weather is rainy, the output power of the solar panel is less than the preset charging power, the lithium battery continues to supply power to the power monitoring device. When the weather changes from rainy to sunny, the output power of the solar panel is greater than the preset charging power, the circuits between the solar panel and the super capacitor and between the lithium battery and the super capacitor are conductive, so that the lithium battery and the super capacitor are charged by the solar panel. When the voltage value of the super capacitor is greater than the discharge prohibition threshold and the voltage value of the super capacitor is greater than the voltage value of the lithium battery within a preset time period, the logic control unit controls the switching control circuit to make the circuit between the super capacitor and the power monitoring device conductive, so that the power monitoring device is supplied by the super capacitor.

[0068] In one embodiment of the present application, when the voltage value of the super capacitor is less than the discharge prohibition threshold, the switching control circuit controls the circuit between the lithium battery and the power monitoring device to be conductive, so that the lithium battery supplies power to the power monitoring device. Before this, the logic control unit controls the electric parameter acquisition circuit in the charge and discharge control circuit to acquire the voltage information corresponding to the super capacitor, and determines whether the voltage value of the super capacitor is less than the preset low voltage threshold according to the acquired voltage information. The logic control unit also controls the common charging control circuit in the charge and discharge control circuit to adjust the output power of the solar panel in the pre-charging circuit, so as to reduce the output power of the solar panel to prevent damage to the super capacitor. When the voltage value of the super capacitor is less than the preset low voltage threshold, the logic control unit controls the super capacitor to enter the pre-charging circuit, and pre-charges the super capacitor for a preset time according to the adjusted output power of the solar panel, thereby protecting the super capacitor.

[0069] The pre-charging circuit is a small current charging process that the super capacitor and the lithium battery must go through at a low voltage, which is to prevent the super capacitor and the lithium battery from being damaged by continuing to charge at a large current in a low voltage state.

[0070] Step 104: The switching control circuit controls the circuit between the super capacitor and the solar panel to be conductive, so that the super capacitor is charged by the solar panel. When the voltage value of the super capacitor is greater than the voltage value of the lithium battery within a preset time period, it is determined that the super capacitor continues to serve as a power supply device for the power monitoring device.

[0071] The logic control unit in the power supply system controls the switch control circuit in the charge-discharge control circuit, and turns on the loop between the super capacitor and the solar panel, so that the super capacitor can be charged by the solar panel. When the voltage values of the super capacitor are all greater than the voltage value of the lithium battery within a preset time period, the logic control unit determines that the super capacitor continues to serve as the power supply device of the power control device.

[0072] In an embodiment of the present application, the power supply system further calculates the power, voltage, current, output power and temperature of the super capacitor and the lithium battery through the logic control unit, so that the state of health SOH of the lithium battery can be determined according to the power, voltage, current, output power and temperature of the lithium battery when the lithium battery is discharging, and the state of health SOH of the lithium battery is transmitted to the power supply system of the power monitoring device through the RS485 bus. By outputting the power parameters of the super capacitor and the lithium battery in real time and transmitting these power parameters to the power supply system, the present application can realize remote viewing of the power supply situation, determine the real-time health status of the lithium battery, and thus can find and solve problems in time, improving the problem solving efficiency of the power supply system.

[0073] It should be noted that the state of health of the lithium battery in the embodiments of the present application includes two states: normal state and abnormal state.

[0074] The above is a method embodiment of the present application. Based on the same inventive concept, the embodiments of the present application also provide a power supply device of a power monitoring device, as shown in Figure 4 .

[0075] Figure 4 An internal structure diagram of a power supply device of a power monitoring device provided by an embodiment of the present application. As shown in Figure 4 , the power supply system applied to the power monitoring device, the power supply system includes a solar panel, a super capacitor, a lithium battery, a charge-discharge control circuit, a logic control unit and a power monitoring device, and the device includes:

[0076] at least one processor;

[0077] and a memory in communication connection with the at least one processor;

[0078] The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to:

[0079] The logic control unit controls the electric quantity acquisition circuit in the charge-discharge control circuit, acquires the voltage information corresponding to the super capacitor and the lithium battery, and compares the voltage value of the super capacitor with the voltage value of the lithium battery through the voltage comparator;

[0080] when the voltage value of the super capacitor is greater than the voltage value of the lithium battery and greater than a preset low voltage threshold, the switch control circuit in the charge-discharge control circuit is controlled to make the loop between the super capacitor and the power monitoring device conductive, so that the power monitoring device is powered by the super capacitor;

[0081] when the voltage value of the super capacitor is less than the discharge prohibition voltage threshold, the switch control circuit is controlled to make the loop between the lithium battery and the power monitoring device conductive, so that the power monitoring device is powered by the lithium battery;

[0082] The switch control circuit is controlled to make the loop between the super capacitor and the solar panel conductive, so that the super capacitor is charged by the solar panel, and when the voltage value of the super capacitor is greater than the voltage value of the lithium battery within a preset time period, it is determined that the super capacitor continues to serve as the power supply device of the power monitoring device.

[0083] The application also provides a non-volatile computer storage medium storing computer executable instructions, which are applied to a power supply system of a power monitoring device, the power supply system comprising a solar panel, a super capacitor, a lithium battery, a charge-discharge control circuit, a logic control unit and a power monitoring device, and the computer executable instructions are set to:

[0084] The logic control unit controls the electric parameter acquisition circuit in the charge-discharge control circuit to acquire the voltage information corresponding to the super capacitor and the lithium battery, and compares the voltage value of the super capacitor with the voltage value of the lithium battery through a voltage comparator;

[0085] when the voltage value of the super capacitor is greater than the voltage value of the lithium battery and greater than a preset low voltage threshold, the switch control circuit in the charge-discharge control circuit is controlled to make the loop between the super capacitor and the power monitoring device conductive, so that the power monitoring device is powered by the super capacitor;

[0086] when the voltage value of the super capacitor is less than the discharge prohibition voltage threshold, the switch control circuit is controlled to make the loop between the lithium battery and the power monitoring device conductive, so that the power monitoring device is powered by the lithium battery;

[0087] The switch control circuit is controlled to make the loop between the super capacitor and the solar panel conductive, so that the super capacitor is charged by the solar panel, and when the voltage value of the super capacitor is greater than the voltage value of the lithium battery within a preset time period, it is determined that the super capacitor continues to serve as the power supply device of the power monitoring device.

[0088] The various embodiments in the present application are described in a progressive manner, and the same or similar parts among the various embodiments can be referred to each other. Each embodiment focuses on the difference from other embodiments. In particular, the device and medium embodiments are described simply because they are substantially similar to the method embodiments, and the relevant parts can be referred to the description of the method embodiments.

[0089] The device and medium provided by the embodiments of the present application are one-to-one corresponding to the method, and therefore, the device and medium also have the similar beneficial technical effects as the method. Since the beneficial technical effects of the method have been described in detail above, the beneficial technical effects of the device and medium will not be described here.

[0090] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. In addition, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROMs, optical storage, etc.) containing computer-usable program code.

[0091] The present application is described with reference to flowcharts and / or block diagrams of the method, device (system), and computer program product according to the embodiments of the present application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and the combination of the flows and / or blocks in the flowcharts and / or block diagrams can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing apparatus to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing apparatus produce a device implemented in the flowcharts and / or block diagrams. Figure 1 The function specified in one flow or multiple flows and / or blocks Figure 1 The function specified in one block or multiple blocks.

[0092] These computer program instructions can also be stored in a computer-readable memory that can direct the computer or other programmable data processing apparatus to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including instruction devices that implement the flowcharts and / or block diagrams. Figure 1 The function specified in one flow or multiple flows and / or blocks Figure 1 The function specified in one block or multiple blocks.

[0093] These computer program instructions can also be loaded into a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks. Figure 1 Figure 1

[0094] In one typical configuration, the computing device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory.

[0095] The memory can include non-persistent memory and / or volatile memory, such as random access memory (RAM) about which the processor can execute instructions. The memory can also include non-volatile memory, such as read only memory (ROM), electrically programmable read only memory (EPROM), electrically erasable programmable read only memory (EEPROM), programmable read only memory (PROM), erasable programmable read only memory (EPROM), flash memory, or a combination of non-volatile memories in different types. The memory is an example of computer readable storage media.

[0096] Computer readable media includes permanent and non-permanent, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read only memory (ROM), electrically programmable read only memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital versatile disc (DVD), or other optical storage, magnetic cassette, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information accessible to computing devices. According to the definition herein, computer readable media does not include transitory media such as modulated data signals and carrier waves.

[0097] It should also be noted that the terms "comprising", "comprises", "including", "includes" or any other variation thereof are intended to cover a non-exclusive inclusion, such that a process, method, article or apparatus that comprises a list of elements does not include only those elements recited, but can also include other elements not expressly listed or inherent to such process, method, article or apparatus. Without further limitation, an element preceded by "comprises a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article or apparatus that includes the recited element.

[0098] ​​The above merely provides an example of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application should be included in the scope of claims of the present application.

Claims

1. A power supply method for a power monitoring device, characterized in that: A power supply system for a power monitoring device, the power supply system comprising a solar panel, a supercapacitor, a lithium battery, a charge and discharge control circuit, a logic control unit, and a power monitoring device, the method comprising: The logic control unit controls the electrical parameter acquisition circuit in the charge and discharge control circuit to collect voltage information corresponding to the supercapacitor and the lithium battery, and compares the voltage value of the supercapacitor with the voltage value of the lithium battery through a voltage comparator; When the voltage value of the supercapacitor is greater than the voltage value of the lithium battery and greater than a preset low-voltage threshold, the switch control circuit in the charge and discharge control circuit controls the circuit between the supercapacitor and the power monitoring device to be connected, so as to supply power to the power monitoring device through the supercapacitor; When the voltage value of the supercapacitor is less than the discharge prohibition voltage threshold, the switch control circuit controls the circuit between the lithium battery and the power monitoring device to be connected, so as to supply power to the power monitoring device through the lithium battery; The switch control circuit controls the conduction of a circuit between the supercapacitor and the solar panel so as to charge the supercapacitor through the solar panel, and when the voltage value of the supercapacitor is greater than the voltage value of the lithium battery within a preset time period, determines that the supercapacitor continues to serve as the power supply device of the power monitoring device; When the voltage value of the supercapacitor is less than the discharge prohibition voltage threshold, after controlling the circuit between the lithium battery and the power monitoring device to be conductive through the switch control circuit so as to supply power to the power monitoring device through the lithium battery, the method further includes: When the output power of the solar panel is less than the preset charging power, determining that the lithium battery continues to serve as the power supply device of the power monitoring device; When the output power of the solar panel is greater than the preset charging power, the circuits between the solar panel and the lithium battery and the supercapacitor are connected, so as to charge the lithium battery and the supercapacitor through the solar panel; When the voltage value of the supercapacitor is greater than the discharge prohibition voltage threshold and greater than the voltage value of the lithium battery within the preset time period, the switch control circuit controls the circuit between the supercapacitor and the power monitoring device to be connected, so as to supply power to the power monitoring device through the supercapacitor; Before controlling the circuit between the supercapacitor and the solar panel to be conductive by the switch control circuit so as to charge the supercapacitor by the solar panel, the method further includes: Collecting voltage information corresponding to the supercapacitor through the electrical parameter acquisition circuit, and determining whether the voltage value of the supercapacitor is less than the preset low-voltage threshold based on the voltage information; The output power of the solar panel in the pre-charging circuit is adjusted by the common charging control circuit in the charge and discharge control circuit, and when the voltage value of the supercapacitor is less than the preset low-voltage threshold, the supercapacitor is controlled to enter the pre-charging circuit, so as to pre-charge the supercapacitor for a preset time according to the adjusted output power of the solar panel; The method further comprises: The electric parameter acquisition circuit collects current information corresponding to the supercapacitor and the lithium battery, and when the charge and discharge current value of the supercapacitor or the lithium battery is greater than a preset maximum charge current threshold, cuts off the circuit between the supercapacitor or the lithium battery and the power monitoring device and the solar panel, so that the supercapacitor or the lithium battery stops charging and discharging; During the charging process of the supercapacitor and the lithium battery, the voltage information corresponding to the supercapacitor and the lithium battery is collected through the electrical parameter acquisition circuit, and when the voltage value of the supercapacitor or the lithium battery is greater than a preset high-voltage threshold, the circuit between the supercapacitor or the lithium battery and the solar panel is cut off to stop charging the supercapacitor or the lithium battery.

2. A power supply method for a power monitoring device according to claim 1, characterized in that: Before the logic control unit controls the electrical parameter acquisition circuit in the charge and discharge control circuit to acquire voltage information corresponding to the supercapacitor and the lithium battery, the method further includes: The physical parameter acquisition circuit in the charge and discharge control circuit collects temperature information of the supercapacitor and the lithium battery, and determines whether the temperature of the supercapacitor and the temperature of the lithium battery are within a preset temperature range based on the temperature information; wherein the preset temperature range refers to a standard temperature between a preset high temperature threshold and a preset low temperature threshold; When the temperature of the supercapacitor or the lithium battery is not within the preset temperature range, the circuit between the supercapacitor or the lithium battery and the power monitoring device and the solar panel is cut off to stop charging and discharging the supercapacitor or the lithium battery.

3. The power supply method for a power monitoring device according to claim 1, characterized in that: The method further comprises: Calculating the power, voltage, current, output power and temperature of the supercapacitor and the lithium battery through the logic control unit; When the lithium battery is discharging, determining the health status of the lithium battery according to the power, voltage, current, output power and temperature of the lithium battery, and transmitting the health status to the power supply system via a bus; The health status includes normal status and abnormal status.

4. The power supply method for a power monitoring device according to claim 1, characterized in that: When the logic control unit starts working, the method further includes: The logic control unit is used to set a low voltage threshold, a high voltage threshold, a minimum charging current threshold, a maximum charging current threshold, a low temperature threshold, and a high temperature threshold for the supercapacitor and the lithium battery to protect the supercapacitor and the lithium battery.

5. The power supply method for a power monitoring device according to claim 1, characterized in that: The method further comprises: Determining that the initial voltage value of the supercapacitor is zero; When the power monitoring device starts to be powered, the switch control circuit controls the circuit between the lithium battery and the power monitoring device to be connected, so as to power the power monitoring device through the lithium battery, and controls the circuit between the supercapacitor and the solar panel to be connected, so as to charge the supercapacitor through the solar panel.

6. A power supply device for a power monitoring device, characterized in that: A power supply system for a power monitoring device, comprising a solar panel, a supercapacitor, a lithium battery, a charge and discharge control circuit, a logic control unit, and a power monitoring device, comprising: at least one processor; and, a memory communicatively coupled to the at least one processor; The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the power supply method for a power monitoring device as described in any one of claims 1 to 5.

7. A non-volatile computer storage medium storing computer executable instructions, characterized in that: A power supply system for a power monitoring device, the power supply system comprising a solar panel, a supercapacitor, a lithium battery, a charge and discharge control circuit, a logic control unit, and a power monitoring device, wherein the computer executable instructions are configured as follows: A power supply method for a power monitoring device as described in any one of claims 1 to 5.

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