Intelligent Power Module and Its Working Method, Storage Medium

Abstract

The present invention discloses an intelligent power module, its working method, and a storage medium, relating to the technical field of power modules. The working method of the intelligent power module includes: powering on and initializing the intelligent power module; the main control module detecting whether the battery of the battery module is in a normal power supply state, and if not, the main control module controlling the power module to charge the supercapacitor of the supercapacitor module and stopping charging the battery module and the load module; when the supercapacitor is fully charged, the main control module turns on the operating power supply unit; after continuously charging the supercapacitor to full, the main control module turns on the device power supply unit and the communication power supply unit; after continuously charging the supercapacitor to full, the main control module controls the power module to charge the battery until the battery is fully charged. According to the working method of the intelligent power module of the embodiments of the present invention, the power-on logic of the system is optimized to use all the energy of the CPT to charge the supercapacitor and maintain the constant power charging of the supercapacitor, thereby greatly reducing the charging time.

Description

Technical Field

[0001] The present invention relates to the technical field of power modules, and in particular to an intelligent power module, its working method, and a storage medium. Background Art

[0002] In the field of power distribution networks, in recent years, a pole-mounted switch solution based on a capacitive power take-off power supply (hereinafter referred to as CPT) has emerged. Compared with the traditional electromagnetic power supply PT, the capacitive power take-off power supply has low cost, small footprint, light weight, simple installation, and especially has almost no influence on the ferromagnetic resonance of the primary line. Therefore, it has been vigorously developed in China in recent years.

[0003] The power module is powered by 1 to 2 CPTs in a split-phase manner. When one CPT is under voltage (the under voltage may be caused by grid fluctuations or the operation of the motor or electromagnet of the mechanism), the power module temporarily shuts down this power supply to try to restart the CPT. However, the load still exists, which will cause other input CPTs to also enter the under voltage protection. Eventually, all CPTs may enter the under voltage protection due to a primary overload and cannot be restored, resulting in the paralysis of the entire system operation. At the same time, in actual applications, there is a situation where the rated powers of the two CPTs are inconsistent. Usually, the power of the CPT on the incoming line side is greater than that of the CPT on the outgoing line side. Conventional power modules are unable to handle this, and the CPT on the outgoing line side can hardly effectively output power. In addition, the conventional power module is not perfect in power distribution and power-on logic. Usually, the super capacitor is charged in a constant current manner, and the charging voltage range of the super capacitor is 0 to max. In this way, during the charging process of the capacitor, the charging power increases from small to large. And the conventional power module usually reserves a part of the power for the super capacitor, so the maximum charging power of the super capacitor is also limited. In this way, the super capacitor needs a longer time to complete the charging. The charging time of the super capacitor is usually up to one hour or longer, and the long charging time will prolong the fault time of the power grid. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. For this purpose, the present invention proposes an intelligent power module and its working method, which can reduce the charging time of the super capacitor and enable the power module to enter the normal working state as soon as possible.

[0005] A working method of an intelligent power module according to an embodiment of the present invention. The intelligent power module includes a main control module, a power module, a supercapacitor module, a battery module, and a load module. The main control module is electrically connected to the power module, the supercapacitor module, the battery module, and the load module respectively. The main control module is used to control the startup and shutdown of the power module. The main control module is provided with a plurality of acquisition units and a plurality of adjustment units. The acquisition units are used to acquire the voltage and current of the power module, the supercapacitor module, and the battery module, and to acquire the current of the load module. The adjustment units are used to adjust the output of the power module and to adjust the charging processes of the supercapacitor module and the battery module. The power module is used to provide power for the supercapacitor module, the battery module, and the load module. The working method of the intelligent power module includes:

[0006] The intelligent power module is powered on and initialized;

[0007] The main control module detects whether the battery of the battery module is in a normal power supply state. If not, the main control module controls the power module to charge the supercapacitor of the supercapacitor module and stops charging the battery module and the load module. The load module includes an operating power supply unit, a device power supply unit, and a communication power supply unit;

[0008] When the supercapacitor is fully charged, the main control module turns on the operating power supply unit;

[0009] After continuously charging the supercapacitor to full, the main control module turns on the device power supply unit and the communication power supply unit;

[0010] After continuously charging the supercapacitor to full, the main control module controls the power module to charge the battery until the battery is fully charged.

[0011] According to some embodiments of the present invention, the power module includes a first power acquisition unit and a second power acquisition unit. The working method of the intelligent power module further includes the following steps:

[0012] The main control module sets the rated power of the first power acquisition unit and the second power acquisition unit and controls the first power acquisition unit to output a fixed voltage;

[0013] The main control module acquires the output voltage and output current of the first power acquisition unit and the second power acquisition unit through the acquisition unit;

[0014] The master control module adjusts the output power of the second power extraction unit according to the rated power, the fixed voltage, the output voltage, and the output current, so that the difference between the load percentages of the first power extraction unit and the second power extraction unit is less than a preset value.

[0015] According to some embodiments of the present invention, the working method of the intelligent power module further includes the following steps:

[0016] When the first power extraction unit and / or the second power extraction unit is / are undervoltage due to overload, the master control module controls the first power extraction unit and the second power extraction unit to disconnect the load module;

[0017] When the first power extraction unit and the second power extraction unit recover the voltage, the master control module controls the first power extraction unit and the second power extraction unit to connect the load module.

[0018] According to some embodiments of the present invention, the power module further includes a first rectification and filtering unit, a second rectification and filtering unit, a first isolated DC / DC unit, a second isolated DC / DC unit, a first switch control unit, a second switch control unit, a first optocoupler, and a second optocoupler. Wherein, one end of the first optocoupler is electrically connected to the master control module, the other end of the first optocoupler is connected to one end of the first switch control unit, the other end of the first switch control unit is connected to the control end of the first isolated DC / DC unit, the input end of the first rectification and filtering unit is electrically connected to the output end of the first power extraction unit, the output end of the first rectification and filtering unit is electrically connected to the input end of the first isolated DC / DC unit, and the output end of the first isolated DC / DC unit is electrically connected to the DC bus; One end of the second optocoupler is electrically connected to the master control module, the other end of the second optocoupler is connected to one end of the second switch control unit, the other end of the second switch control unit is connected to the control end of the second isolated DC / DC unit, the input end of the second rectification and filtering unit is electrically connected to the output end of the second power extraction unit, the output end of the second rectification and filtering unit is electrically connected to the input end of the second isolated DC / DC unit, and the output end of the second isolated DC / DC unit is electrically connected to the DC bus.

[0019] According to some embodiments of the present invention, the following steps are further included:

[0020] When the battery or the supercapacitor is in the charging process, the master control module collects the current and voltage of the battery or the supercapacitor through the acquisition unit;

[0021] The main control module adjusts the charging current of the battery or the super capacitor according to the current and voltage of the battery or the super capacitor, so that the battery or the super capacitor maintains a constant power charge.

[0022] According to some embodiments of the present invention, the intelligent power module further includes a temperature detection module, which is used to detect the temperature information of the battery and send the temperature information to the main control module.

[0023] According to some embodiments of the present invention, the main control module is provided with a first interface and a second interface. The first interface is used to connect to the upper computer, enabling the upper computer to configure, debug or monitor the main control module, and the second interface is used to connect to the FTU, enabling the main control module to communicate with the FTU.

[0024] According to some embodiments of the present invention, the following steps are further included:

[0025] The main control module obtains the maximum power that the power module can provide and the real-time power of the load module;

[0026] According to the difference between the maximum power and the real-time power, the power margin is obtained;

[0027] According to the power margin, the charging currents of the super capacitor and the battery are adjusted in real time.

[0028] On the other hand, for the intelligent power module according to an embodiment of the present invention, the intelligent power module includes a main control module, a power module, a super capacitor module, a battery module and a load module, and the intelligent power module is used to execute the working method of the above-mentioned intelligent power module.

[0029] On the other hand, for the storage medium according to an embodiment of the present invention, the storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a computer to execute the working method of the above-mentioned intelligent power module.

[0030] The intelligent power module according to an embodiment of the present invention, its working method and storage medium have at least the following beneficial effects: optimizing the power-on logic of the system to use all the energy of the CPT to charge the super capacitor under the same conditions and maintaining the constant power charge of the super capacitor, which can greatly reduce the charging time. After the super capacitor is fully charged, the power supplies of each electrical device are turned on one by one to ensure that the system can work normally under any circumstances.

[0031] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the following description of embodiments in conjunction with the accompanying drawings, where:

[0033] Figure 1 is a schematic structural diagram of a power module in the prior art;

[0034] Figure 2 is a schematic structural diagram of an intelligent power module according to an embodiment of the present invention;

[0035] Figure 3 is a flowchart of the steps of a working method of an intelligent power module according to an embodiment of the present invention;

[0036] Figure 4 is a schematic diagram of the specific process of a working method of an intelligent power module according to an embodiment of the present invention. Detailed Embodiments

[0037] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only for explaining the present application and should not be construed as limiting the present application. For the step numbers in the following embodiments, they are only set for the convenience of explanation and illustration, and no limitation is imposed on the order between the steps. The execution order of each step in the embodiments can be adaptively adjusted according to the understanding of those skilled in the art.

[0038] In the description of the present invention, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0039] The terms "first", "second", "third", "fourth", etc. in the specification and claims of the present invention and the accompanying drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products, or devices.

[0040] References to "embodiments" in this invention mean that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the invention. The phrase appearing in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0041] In the field of power distribution networks, in recent years, a pole-mounted switch solution based on a capacitive power take-off power supply (hereinafter referred to as CPT) has emerged. Compared with the traditional electromagnetic power supply PT, the capacitive power take-off power supply has a low cost, small footprint, light weight, simple installation, and has almost no impact on the ferromagnetic resonance of the primary line. Therefore, it has been vigorously developed in recent years.

[0042] Generally, the capacitive power take-off power supply serves as the power supply part of the entire secondary system. The output power of a single CPT will not exceed 15VA. In addition to the normal operating power consumption of the entire secondary system, the instantaneous power of the coil during the opening and closing operations is about hundreds of watts, and the duration is about 50 milliseconds. The rated power of the energy storage motor is usually 75 - 150W, and the duration is about 15 seconds. It can be seen that the input power supply is not sufficient to support the peak output of the entire secondary system. Therefore, some energy storage components are needed to meet the demand for short-term high-power output of these high-power components. The input power supply CPT charges the energy storage components with the power obtained usually. When the demand for short-term high-power output needs to be met, power is obtained from the energy storage components.

[0043] Currently, the energy storage components generally used are usually storage batteries. The storage batteries have a relatively large power density and store more energy. Usually, they support the operation of the entire secondary system for a period of time when the line loses power until the voltage reaches the under-voltage protection. Therefore, when the line comes back on after a power outage, if the time since the last power outage is too long, the storage battery is in the under-voltage protection state and cannot perform the opening and closing operations of the circuit breaker. And because the battery has a large capacity, it requires a lot of energy to charge to a state where it can be used normally. As previously introduced, the power of CPT is small, so the charging time will be very long, which affects the actual use.

[0044] From the perspective of service life, currently, the mainly used ones are lead-acid batteries and lithium iron phosphate batteries. As chemical energy storage components, it is inevitable that they are greatly affected by the environment. The service life of lead-acid batteries is 2 - 5 years, and the life of lithium iron phosphate batteries is 5 - 8 years. The quality assurance period of distribution network equipment is at least 8 years. It can be seen that within the quality assurance period, some equipment will inevitably be affected in part of its functions due to battery damage.

[0045] In view of the above two defects, the conventional solution is to supplement a supercapacitor module with long life and small capacity as a supplement for this part. The capacity requirement only needs to be able to meet the "opening"-"closing" operation of the switch three times. At this time, the power supply system diagram of the entire secondary system is as shown in Figure 1 shown. For this system, the following problems need to be solved:

[0046] I. The power supply system may be paralyzed when the output is overloaded;

[0047] CPT currently has two output methods: DC output and AC output. Because its principle is to directly draw power from the 5.773KV of the primary line through the C-L or C-C step-down method, the maximum output current is:

[0048] I max =U / Xc = U×2πfc;

[0049] Among them, U is the voltage, Xc is the capacitive reactance of the capacitor, f is the frequency, and c is the capacitance value. In view of the characteristics of the capacitive power supply, in the case of output overload, the output current of the CPT will be the maximum value, and the output voltage will be 0 or much lower than the rated value. According to P = U×I, its output power will decrease, and finally the CPT cannot output normally. The power-consuming end (power supply module) needs to disconnect the power output to restart the CPT.

[0050] The conventional power supply module is realized through under-voltage protection. The principle is to start the internal timer when the input voltage is detected to be too low, and then try to restart after the timer time has elapsed. The power supply module is powered by 1-2 CPTs in a split-phase manner. When one CPT is under-voltage, the power supply module temporarily shuts down this power supply to try to restart the CPT. However, the load still exists, which will cause other input CPTs to also enter under-voltage protection. Eventually, all CPTs may enter under-voltage protection and cannot be restored due to a single overload (such as operating a circuit breaker, sudden power increase of the communication module, etc.), resulting in the paralysis of the entire system.

[0051] II. The output power of the CPT cannot be maximized;

[0052] In practical applications, there are two electrical design schemes. One is that the rated output powers of the two CPTs are equal, and the other is that the rated output powers of the two CPTs are not equal.

[0053] The first case is the most widely applied scenario. In this case, it is the best situation that the power outputs of the two CPTs are equal. Conventional power modules do not have the function of current sharing, so the output powers of the two CPTs are not equal, and their respective output powers depend on the accuracy of the two switching power supplies within the power module. When the two CPTs are powered simultaneously, the difference in output power is significant, and the final result is that 1 + 1 < 2, indicating that there is a large room for optimization.

[0054] The second case is when the rated powers of the two CPTs are inconsistent. Usually in application scenarios where the system is relatively complex and has high power consumption, generally the power of the CPT on the incoming line side is greater than that of the CPT on the outgoing line side. Conventional power modules are unable to handle this situation, and the CPT on the outgoing line side can hardly effectively output power.

[0055] Third, there are defects in the supercapacitor charging;

[0056] Conventional power modules are not perfect in power distribution and power-on logic. Usually, they charge the supercapacitor in a constant current manner, and the charging voltage range of the supercapacitor is 0 to max. In this way, during the charging process of the capacitor, the charging power increases from small to large. And conventional power modules usually reserve a part of the power for the supercapacitor, so the maximum charging power of the supercapacitor is also limited, and it takes a longer time for the supercapacitor to complete charging.

[0057] Fourth, the power-on logic of the system can be further improved;

[0058] The power supply logic of conventional power modules is to supply power to all devices as soon as power is restored, and reserve a part of the energy to charge the supercapacitor. At this time, the supercapacitor is in a slow charging state, and thus the circuit breaker does not have the condition for operation before the supercapacitor is fully charged. Another common situation is that if the switch is manually operated during a power outage, then the switch will be in the "not energized" state. At this time, it is equivalent that the output terminal of the power module is directly connected to the energy storage motor, and neither the CPT nor the power module is sufficient to drive the motor to work, so the system is in a locked state and cannot be started, let alone work again.

[0059] To solve the above problems, the embodiments of the present invention propose an intelligent power module, its working method, and a storage medium, which optimize the power-on logic of the system to use all the energy of the CPT to charge the supercapacitor under the same conditions and maintain a constant power charging of the supercapacitor, which can greatly reduce the charging time. After the supercapacitor is fully charged, the power supplies of each electrical device are turned on one by one to ensure that the system can work normally under any circumstances.

[0060] The following will describe in detail the intelligent power module, its working method, and the storage medium according to the embodiments of the present invention with reference to the accompanying drawings.

[0061] AsFigure 2 As shown in the figure, an embodiment of the present invention provides an intelligent power module, which includes a main control module, a power module, a supercapacitor module, a battery management module, and a load module. The main control module is electrically connected to the power module, the supercapacitor module, the battery module, and the load module respectively. The main control module is used to control the startup and shutdown of the power module. The main control module is provided with a plurality of acquisition units and a plurality of adjustment units. The acquisition units are used to acquire the voltage and current of the power module, the supercapacitor module, and the battery module, and the current of the load module. The adjustment units are used to adjust the output of the power module and the charging process of the supercapacitor module and the battery module. The power module is used to provide power for the supercapacitor module, the battery module, and the load module.

[0062] Specifically, as Figure 2 shown, the main control module uses an MCU, which is the core component of the energy management of the intelligent power module. It collects the voltage and current of each energy node in real time, manages each energy node, and executes corresponding management strategies according to different working conditions. In this example, the main control module is provided with a first interface (i.e., serial port 1) and a second interface (i.e., serial port 2). Among them, the first interface and the second interface can adopt RS232 interfaces. The first interface is used for configuration, debugging, and monitoring. The first interface is used to connect to the upper computer, enabling the upper computer to configure, debug, or monitor the main control module. The second interface is used to connect to the FTU (Feeder Terminal Unit), enabling the main control module to communicate with the FTU, so as to be able to upload information such as input and output voltage and current, temperature, and abnormal states in real time, and be able to execute corresponding actions according to the instructions of the FTU.

[0063] In some embodiments of the present application, the power module includes a first power extraction unit (i.e., power channel 1) and a second power extraction unit (power channel 2). Both the first power extraction unit and the second power extraction unit are CPTs, that is, the power module includes two CPTs. In this example, the main control module can set the rated output power of each CPT power supply and perform real-time power distribution according to the ratio of their rated output powers to ensure that the load percentages of each CPT are basically the same, so as to achieve the maximum output utilization rate. In practical applications, short-term overload of CPTs is inevitable. The main control module will monitor the working states of the two CPTs in real time. When a CPT is under-voltage due to overload, it will let the CPTs throw the load module at the same time. After the voltage of the CPTs recovers, the load module will be connected again at the same time to avoid the situation that all CPTs enter under-voltage protection due to a single overload and cannot recover, resulting in the paralysis of the entire system.

[0064] As Figure 2As shown, in some embodiments of the present application, the power supply module further includes a first rectification and filtering unit, a second rectification and filtering unit, a first isolated DC / DC unit, a second isolated DC / DC unit, a first switch control unit, a second switch control unit, a first optocoupler, and a second optocoupler. One end of the first optocoupler is electrically connected to the main control module, the other end of the first optocoupler is connected to one end of the first switch control unit, the other end of the first switch control unit is connected to the control end of the first isolated DC / DC unit, the input end of the first rectification and filtering unit is electrically connected to the output end of the first power extraction unit, the output end of the first rectification and filtering unit is electrically connected to the input end of the first isolated DC / DC unit, and the output end of the first isolated DC / DC unit is electrically connected to the DC bus; One end of the second optocoupler is electrically connected to the main control module, the other end of the second optocoupler is connected to one end of the second switch control unit, the other end of the second switch control unit is connected to the control end of the second isolated DC / DC unit, the input end of the second rectification and filtering unit is electrically connected to the output end of the second power extraction unit, the output end of the second rectification and filtering unit is electrically connected to the input end of the second isolated DC / DC unit, and the output end of the second isolated DC / DC unit is electrically connected to the DC bus. The main control module can switch the working states of the first power extraction unit and the second power extraction unit through the first switch control unit and the second switch control unit. When the first power extraction unit works, it outputs power to the first rectification and filtering unit for rectification and filtering, then enters the first isolated DC / DC unit for voltage conversion, and finally supplies power to the supercapacitor module, the battery module, and the load module through the DC bus; When the second power extraction unit works, it outputs power to the second rectification and filtering unit for rectification and filtering, then enters the second isolated DC / DC unit for voltage conversion, and finally supplies power to the supercapacitor module, the battery module, and the load module through the DC bus. The power supply module is designed with two paths, where one path of power (the first power extraction unit / the second power extraction unit) serves as the main path, and the main control module controls the output of a fixed voltage according to the set voltage value. The other path of power (the second power extraction unit / the first power extraction unit) serves as the slave path, and the main control module makes real-time adjustments according to the rated power set for the two paths of power and the real-time voltage and current signals collected from the two paths of power, ensuring that the load percentages of the two paths of power are nearly the same and achieving the purpose of power matching. The hardware designs of the two paths of power are the same, and both can serve as the main path. If there is only one set of power supply, then it serves as the main path. The power supply module is designed for constant voltage and constant current control, where the output voltage is controlled by the main control module and the output current is controlled by hardware. The output current of the power supply module cannot exceed the set value. When the output current is equal to the rated output current, it operates in the constant current source mode.

[0065] As Figure 2As shown, in this example, the supercapacitor module includes a supercapacitor management unit and supercapacitors. The main control module can manage the supercapacitors through the supercapacitor management unit, including voltage acquisition, charging current acquisition, charging management, overvoltage protection, current-type charging control, etc.; the battery module includes a battery management unit and a battery. The main control module can manage the battery through the battery management unit, mainly including voltage acquisition, charge and discharge current acquisition, charging management, discharge management, overvoltage protection, undervoltage shutdown, overtemperature warning, etc. The main control module is also connected to a temperature detection module. The temperature detection module is used to detect the temperature information of the battery and send the temperature information to the main control module so that the main control module can monitor the temperature of the battery in real time and prevent the temperature of the battery from being too high.

[0066] As Figure 2 shown, in some embodiments of the present application, the load module includes an operation power supply unit, a device power supply unit, and a communication power supply unit. Among them, the operation power supply unit includes an operation power supply control circuit and an operation power supply, the device power supply unit includes a device power supply control circuit and a device power supply, and the communication power supply unit includes a communication power supply control circuit and a communication power supply. As the core component of the system, the main control module integrates multiple acquisition units (i.e., ADCs) on-chip. Through the ADCs, the voltages and currents of two power-taking units, supercapacitors, and batteries are acquired, as well as the currents output by the operation power supply, device power supply, and communication power supply, and the battery temperature, etc., a total of 12 analog signals. Based on this basic data, corresponding logical judgments and function executions are performed. At the same time, multiple adjustment units (i.e., DACs) are also integrated on-chip in the main control module. The output voltages of the two power-taking units and the charging currents of the supercapacitors and batteries are adjusted through the DACs on-chip; in addition, the main control module also controls the start and stop of the two power-taking units, the connection and disconnection of the battery, and the on-off of the outputs of the operation power supply, device power supply, and communication power supply through the IO ports, and can communicate with other devices through the serial port and display relevant information on the liquid crystal screen.

[0067] On the other hand, as Figure 3 shown, based on the intelligent power module described in the above embodiments, the present application also proposes a working method for the intelligent power module, which includes the following steps:

[0068] Step S100: The intelligent power module is powered on and initialized;

[0069] Step S200: The main control module detects whether the battery of the battery module is in a normal power supply state. If not, the main control module controls the power module to charge the supercapacitors of the supercapacitor module and stops charging the battery module and the load module; the load module includes an operation power supply unit, a device power supply unit, and a communication power supply unit;

[0070] Step S300: After the super capacitor is fully charged, the main control module turns on the operating power supply unit;

[0071] Step S400: After continuing to fully charge the super capacitor, the main control module turns on the device power supply unit and the communication power supply unit;

[0072] Step S500: After continuing to fully charge the super capacitor, the main control module controls the battery management module to charge the battery until the battery is fully charged.

[0073] Specifically, the initialization process of the intelligent power module is as Figure 4 shown. First, the main control module detects how many power taking units (CPT) are supplying power and sets the output power of the power module accordingly; then, the main control module detects whether the battery is in a normal power supply state. If it is in a normal power supply state, the battery can supply power to the operating power supply unit, the device power supply unit, and the communication power supply unit to enable the system to work properly; if the battery is in an under-voltage / non-energy storage state, it cannot work properly. At this time, all other power-consuming terminals are turned off so that the power module can fully charge the super capacitor at the fastest speed until the super capacitor is fully charged; at this time, the super capacitor can supply power to the operating power supply unit, thereby turning on the operating power. It should be noted that the operating power is connected to the operating mechanism, which contains high-power devices such as electromagnets and motors and cannot be driven by the input power supply. Therefore, it can only rely on high-power discharge power sources such as super capacitors / lead-acid batteries to carry the load. When the power module is powered on, the lead-acid battery may have been discharged, the operating mechanism is in the "non-energy storage" state, and the motor is in the on state. Therefore, the operating power is powered on first to make the energy storage motor work for about 15 seconds, and then the mechanism is in the "energy storage" state. At this time, the operating power is in a no-load state. After the power consumption of the motor, after turning on the operating power, the super capacitor is in an energy-insufficient state, so the super capacitor needs to be charged continuously; then after waiting for a period of time (such as 15s or other time), after the super capacitor is fully charged again, the charging of the super capacitor is turned off, and at the same time, the device power and the communication power are turned on so that the system can work properly; after turning on the device power and the communication power, the super capacitor is consumed some energy and is in an energy-insufficient state. Therefore, wait for a period of time until the super capacitor is fully charged, and the power module starts to charge the battery until the battery is fully charged.

[0074] According to the working method of the intelligent power module of the present application embodiment, the power-on logic of the system is optimized to use all the energy of the CPT to charge the super capacitor under the same conditions and maintain the constant power charging of the super capacitor, which can greatly reduce the charging time. After the super capacitor is fully charged, each power-consuming device power supply is turned on one by one to ensure that the system can work properly under any circumstances.

[0075] Further, in some embodiments of the present application, the working method of the intelligent power module further includes the following steps:

[0076] The main control module sets the rated power of the first power taking unit and the second power taking unit, and controls the first power taking unit to output a fixed voltage;

[0077] The main control module collects the output voltage and output current of the first power taking unit and the second power taking unit through the collection unit;

[0078] The main control module adjusts the output power of the second power taking unit according to the rated power, fixed voltage, output voltage and output current, so that the difference between the load percentages of the first power taking unit and the second power taking unit is less than a preset value.

[0079] Specifically, the power module includes a first power taking unit (i.e., power channel 1) and a second power taking unit (power channel 2). Both the first power taking unit and the second power taking unit are CPTs, that is, the power module includes two CPTs. In this example, the main control module can set the rated output power of each CPT power supply and perform real-time power distribution according to the ratio of their rated output powers, ensuring that the load percentages of each CPT are basically the same, so as to achieve the maximum output utilization rate. Among them, the first power taking unit is used as the main path, and the main control module controls the output of a fixed voltage according to the set voltage value. The other power supply (the second power taking unit) is used as the slave path, and the main control module performs real-time adjustment according to the rated power set for the two power supplies and the real-time voltage and current signals collected from the two power supplies, ensuring that the load percentages of the two power supplies are nearly the same, achieving the purpose of power matching. The hardware designs of the two power supplies are the same and can both be used as the main path. If there is only one set of power supply, then it is used as the main path. The power module is designed for constant voltage and constant current control. Among them, the output voltage is controlled by the main control module, and the output current is controlled by the hardware. The output current of the power module cannot exceed the set value. When the output current is equal to the rated output current, it is in the working mode of a constant current source.

[0080] Further, in some embodiments of the present application, the working method of the intelligent power module further includes the following steps:

[0081] When the first power taking unit and / or the second power taking unit is / are undervoltage due to overload, the main control module controls the first power taking unit and the second power taking unit to disconnect the load module;

[0082] When the first power taking unit and the second power taking unit recover the voltage, the main control module controls the first power taking unit and the second power taking unit to connect the load module.

[0083] Specifically, in practical applications, short-term overload of the CPT is inevitable. The main control module will monitor the working status of the two CPTs in real time. When the CPT is under-voltage due to overload, it will cause the CPTs to shed load simultaneously. After the CPT voltage recovers, the load will be connected again simultaneously. By this means, it can be avoided that all CPTs enter the under-voltage protection and cannot recover due to a single overload (such as operating the circuit breaker, sudden power increase of the communication module, etc.), resulting in the paralysis of the entire system operation. Since the CPT is capacitor-powered, its principle is to obtain energy by connecting two capacitors to the ground on the 10KV primary line. Therefore, the current flowing through is equal to 10 / Divided by the capacitive reactance of the two capacitors, or powered by the CL method. Therefore, the output stage can allow short circuits. When the load exceeds the limit, its output voltage becomes lower, but the speed of short-circuit recovery is slower. Therefore, the power supply module needs to intervene to make it "shed load".

[0084] Furthermore, in some embodiments of the present application, the working method of the intelligent power supply module further includes the following steps:

[0085] When the battery or supercapacitor is in the charging process, the main control module collects the current and voltage of the battery or supercapacitor through the acquisition unit;

[0086] The main control module adjusts the charging current of the battery through the battery management module or adjusts the charging circuit of the supercapacitor through the supercapacitor management module according to the current and voltage of the battery or supercapacitor, so that the battery or supercapacitor maintains constant-power charging.

[0087] Specifically, when charging the supercapacitor and battery, the constant-power charging algorithm is used. The method is as follows: In the hardware design, the charging circuit is designed to be adjustable in charging current, and the MCU controls the charging current; the MCU monitors the voltage and current of the battery and supercapacitor in real time, and adjusts the charging current in real time according to the available energy to achieve constant-power charging and improve the charging efficiency.

[0088] Furthermore, in some embodiments of the present application, the working method of the intelligent power supply module further includes the following steps:

[0089] The main control module obtains the maximum power that the power supply module can provide and the real-time power of the load module;

[0090] According to the difference between the maximum power and the real-time power, the power margin is obtained;

[0091] According to the power margin, the charging currents of the supercapacitor and the battery are adjusted in real time.

[0092] Specifically, the main control module calculates the maximum power that the power supply module can provide based on the currently available CPT, and then subtracts the power of the system load module in real time to obtain the system power margin. Then, it adjusts the charging currents of the supercapacitor and the battery in real time according to the power margin to ensure that the real-time power at the power consumption end is slightly less than the rated power, so as to obtain the maximum energy while ensuring the stable operation of the system.

[0093] According to the working method of the intelligent power supply module of the present application embodiment, the power-on logic of the system is optimized to use all the energy of the CPT to charge the supercapacitor under the same conditions and maintain the constant-power charging of the supercapacitor, which can greatly reduce the charging time. After the supercapacitor is fully charged, the power supplies of each electrical device are turned on one by one to ensure that the system can work properly under any circumstances. At the same time, the main control module can set the rated output power of each power supply and perform real-time power distribution according to the ratio of their rated output powers to ensure that the load percentages of each CPT are basically the same, so as to achieve the maximum output utilization rate. In addition, the main control module calculates the maximum power that the power supply module can provide based on the currently available CPT, and then subtracts the power of the system load module in real time to obtain the system power margin. Then, it adjusts the charging currents of the supercapacitor and the battery in real time according to the power margin to ensure that the real-time power at the power consumption end is slightly less than the rated power, so as to obtain the maximum energy while ensuring the stable operation of the system.

[0094] On the other hand, the embodiment of the present invention also provides a storage medium, which is a computer-readable storage medium. The storage medium stores a computer program, and when the computer program is executed by a processor, it implements the working method of the above-mentioned intelligent power supply module.

[0095] As a non-transitory computer-readable storage medium, the memory can be used to store non-transitory software programs and non-transitory computer-executable programs. In addition, the memory can include high-speed random access memory, and can also include non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state storage devices. In some embodiments, the memory may optionally include a memory remotely set relative to the processor, and these remote memories can be connected to the processor through a network. Examples of the above network include but are not limited to the Internet, an enterprise intranet, a local area network, a mobile communication network, and combinations thereof. The device embodiments described above are merely illustrative, and the units described as separate components may or may not be physically separated, and may be located in one place, or may be distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0096] Although specific embodiments are described herein, those of ordinary skill in the art will recognize that many other modifications or alternative embodiments are likewise within the scope of the present disclosure. For example, any one of the functions and / or processing capabilities described in connection with a particular device or component may be performed by any other device or component. Additionally, although various exemplary implementations and architectures have been described in accordance with embodiments of the present disclosure, those of ordinary skill in the art will recognize that many other modifications to the exemplary implementations and architectures described herein are also within the scope of the present disclosure.

[0097] Certain aspects of the present disclosure have been described above with reference to block diagrams and flowcharts of systems, methods, systems, and / or computer program products according to exemplary embodiments. It should be understood that one or more blocks in the block diagrams and flowcharts, and combinations of blocks in the block diagrams and flowcharts, can be implemented respectively by executing computer-executable program instructions. Similarly, according to some embodiments, some blocks in the block diagrams and flowcharts may not need to be executed in the order shown, or may not need to be executed at all. Additionally, additional components and / or operations beyond those shown in the blocks of the block diagrams and flowcharts may be present in certain embodiments.

[0098] Accordingly, the blocks in the block diagrams and flowcharts support combinations of means for performing the specified functions, combinations of elements or steps for performing the specified functions, and means for program instructions for performing the specified functions. It should also be understood that each block in the block diagrams and flowcharts, and combinations of blocks in the block diagrams and flowcharts, can be implemented by a special purpose hardware computer system that performs a particular function, element, or step, or by a combination of special purpose hardware and computer instructions.

[0099] The program modules, applications, etc. described herein may include one or more software components, including, for example, software objects, methods, data structures, etc. Each such software component may include computer-executable instructions that, in response to execution, cause at least a portion of the functions described herein (e.g., one or more operations of the exemplary methods described herein) to be performed.

[0100] Software components can be coded in any of a variety of programming languages. An exemplary programming language can be a low-level programming language, such as an assembly language associated with a particular hardware architecture and / or operating system platform. Software components including assembly language instructions may need to be converted by an assembler into executable machine code before being executed by the hardware architecture and / or platform. Another exemplary programming language can be a higher-level programming language, which can be portable across multiple architectures. Software components including a higher-level programming language may need to be converted by an interpreter or compiler into an intermediate representation before execution. Other examples of programming languages include, but are not limited to, macro languages, shell or command languages, job control languages, scripting languages, database query or search languages, or report writing languages. In one or more exemplary embodiments, a software component containing instructions in one of the above examples of programming languages can be directly executed by an operating system or other software component without first being converted into another form.

[0101] Software components can be stored as files or other data storage constructs. Software components with similar types or related functions can be stored together in, for example, a specific directory, folder, or library. Software components can be static (e.g., pre-set or fixed) or dynamic (e.g., created or modified at execution time).

[0102] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those of ordinary skill in the art.

Claims

1. A working method of an intelligent power module, characterized in that, The intelligent power module includes a main control module, a power module, a supercapacitor module, a battery module, and a load module. The main control module is electrically connected to the power module, the supercapacitor module, the battery module, and the load module respectively. The main control module is used to control the startup and shutdown of the power module. The main control module is provided with a plurality of acquisition units and a plurality of adjustment units. The acquisition units are used to acquire the voltage and current of the power module, the supercapacitor module, and the battery module, and to acquire the current of the load module. The adjustment units are used to adjust the output of the power module and to adjust the charging processes of the supercapacitor module and the battery module. The power module is used to provide power for the supercapacitor module, the battery module, and the load module; The working method of the intelligent power module includes: The intelligent power module is powered on and initialized; The main control module detects whether the battery of the battery module is in a normal power supply state. If not, the main control module controls the power module to charge the supercapacitor of the supercapacitor module and stops charging the battery module and the load module; The load module includes an operating power supply unit, a device power supply unit, and a communication power supply unit; After the supercapacitor is fully charged, the main control module turns on the operating power supply unit; After the supercapacitor is fully charged continuously, the main control module turns on the device power supply unit and the communication power supply unit; After the supercapacitor is fully charged continuously, the main control module controls the power module to charge the battery until the battery is fully charged; The power module includes a first power extraction unit and a second power extraction unit. The working method of the intelligent power module further includes the following steps: When the first power extraction unit and / or the second power extraction unit is under-voltage due to overload, the main control module controls the first power extraction unit and the second power extraction unit to disconnect the load module; When the first power extraction unit and the second power extraction unit recover the voltage, the main control module controls the first power extraction unit and the second power extraction unit to connect the load module.

2. The working method of the intelligent power module according to claim 1, characterized in that, The working method of the intelligent power module further includes the following steps: The main control module sets the rated power of the first power extraction unit and the second power extraction unit and controls the first power extraction unit to output a fixed voltage; The main control module acquires the output voltage and output current of the first power extraction unit and the second power extraction unit through the acquisition unit; The main control module adjusts the output power of the second power extraction unit according to the rated power, the fixed voltage, the output voltage, and the output current, so that the difference between the load percentages of the first power extraction unit and the second power extraction unit is less than a preset value.

3. The working method of the intelligent power module according to claim 2, characterized in that, The power supply module further includes a first rectification and filtering unit, a second rectification and filtering unit, a first isolated DC / DC unit, a second isolated DC / DC unit, a first switch control unit, a second switch control unit, a first optocoupler, and a second optocoupler. Wherein, one end of the first optocoupler is electrically connected to the main control module, the other end of the first optocoupler is connected to one end of the first switch control unit, the other end of the first switch control unit is connected to the control end of the first isolated DC / DC unit, the input end of the first rectification and filtering unit is electrically connected to the output end of the first power extraction unit, the output end of the first rectification and filtering unit is electrically connected to the input end of the first isolated DC / DC unit, and the output end of the first isolated DC / DC unit is electrically connected to the DC bus; one end of the second optocoupler is electrically connected to the main control module, the other end of the second optocoupler is connected to one end of the second switch control unit, the other end of the second switch control unit is connected to the control end of the second isolated DC / DC unit, the input end of the second rectification and filtering unit is electrically connected to the output end of the second power extraction unit, the output end of the second rectification and filtering unit is electrically connected to the input end of the second isolated DC / DC unit, and the output end of the second isolated DC / DC unit is electrically connected to the DC bus.

4. The working method of the intelligent power module according to claim 1, characterized in that The following steps are further included: When the battery or the supercapacitor is in the charging process, the main control module collects the current and voltage of the battery or the supercapacitor through the acquisition unit; The main control module adjusts the charging current of the battery or the supercapacitor according to the current and voltage of the battery or the supercapacitor, so that the battery or the supercapacitor maintains constant power charging.

5. The working method of the intelligent power module according to claim 1, characterized in that The intelligent power supply module further includes a temperature detection module, and the temperature detection module is used to detect the temperature information of the battery and send the temperature information to the main control module.

6. The working method of the intelligent power module according to claim 1, characterized in that The main control module is provided with a first interface and a second interface. The first interface is used to connect to the upper computer, so that the upper computer can configure, debug, or monitor the main control module. The second interface is used to connect to the FTU, so that the main control module communicates with the FTU.

7. The working method of the intelligent power module according to claim 1, characterized in that The following steps are further included: The main control module obtains the maximum power that the power supply module can provide and the real-time power of the load module; According to the difference between the maximum power and the real-time power, the power margin is obtained; According to the power margin, the charging currents of the supercapacitor and the battery are adjusted in real time.

8. An intelligent power module, characterized in that, The intelligent power supply module includes a main control module, a power supply module, a supercapacitor module, a battery module, and a load module. The intelligent power supply module is used to execute the working method of the intelligent power supply module according to any one of claims 1-7.

9. A storage medium, characterized in that, The storage medium stores computer-executable instructions, and the computer-executable instructions are used to make a computer execute the working method of the intelligent power supply module according to any one of claims 1-7.

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