Intelligent portable power supply output system

Abstract

An intelligent portable power supply output system comprises a main control module; the main power supply circuit is used for obtaining electricity from a power grid and discharging electricity outwards, and the output end of the main power supply circuit is connected with a first switch module electrically connected with the main control module; the energy storage assembly comprises a plurality of energy storage modules; the standby power supply circuit is used for taking electricity from the energy storage module and discharging electricity outwards, and the output end of the standby power supply circuit is connected with a second switch module electrically connected with the main control module; and the charging circuit is used for taking power from the main power supply circuit and supplying power to the energy storage module. According to the intelligent portable power output system provided by the invention, the power grid or the energy storage assembly can be selected to supply power to the intelligent instrument according to the power-on condition of the power grid, so that the intelligent instrument can normally play a monitoring function no matter whether the power grid is electrified or not, and the state of power grid equipment can be fully mastered.

Description

Technical Field

[0001] The present invention relates to the technical field of smart grid, in particular to an intelligent portable power output system. Background Art

[0002] In recent years, the power system has developed rapidly, and various new types of power terminal instruments and equipment have become more and more common, which has put forward higher requirements for the fault diagnosis and safe operation and maintenance of power equipment. In order to strengthen the safe and reliable use of such equipment by the front-line operation and maintenance teams of grassroots power supply stations and institutes, the power management department has equipped various auxiliary tools. Among them, due to lightning strikes and other faults in the power system, as well as staged power consumption areas, in order to reduce iron loss, copper loss and other losses, the drop insurance of these areas is disconnected when not in use, which will cause power outages in the system, and then the on-site collection terminals and electric energy meters will be without power, resulting in the inability of the power user's power collection system to collect data, which seriously restricts the improvement of the power company's collection success rate and the accurate calculation of line losses in the same period. Summary of the invention

[0003] In order to solve the deficiencies in the prior art, the present invention provides an intelligent portable power output system, which can choose to use the power grid to power the smart meter or use the energy storage component to power the smart meter according to the power supply status of the power grid, ensuring that the smart meter can perform the monitoring function normally regardless of whether the power grid has electricity, and can fully grasp the status of the power grid equipment.

[0004] In order to achieve the above-mentioned purpose, the specific scheme adopted by the present invention is: an intelligent portable power output system, comprising: Main control module; A main power supply circuit, used for obtaining power from a power grid and discharging it to the outside, wherein an output end of the main power supply circuit is connected to a first switch module electrically connected to the main control module; An energy storage component, including a plurality of energy storage modules; A backup power supply circuit, used for taking power from the energy storage module and discharging it to the outside, wherein the output end of the backup power supply circuit is connected to a second switch module electrically connected to the main control module; A charging circuit is used to draw power from the main power supply circuit and supply power to the energy storage module.

[0005] As a further optimization of the above-mentioned intelligent portable power output system: a third switch module electrically connected to the main control module is connected between the main power supply circuit and the charging circuit.

[0006] As a further optimization of the above-mentioned intelligent portable power output system: the charging circuit includes an input subcircuit, the input subcircuit includes a half-wave rectification circuit unit and a short-circuit protection unit, the half-wave rectification unit includes a diode D1 and a capacitor C1, and the short-circuit protection unit includes a resistor R6.

[0007] As a further optimization of the above-mentioned intelligent portable power output system: the charging circuit includes a voltage stabilizing subcircuit, and the voltage stabilizing subcircuit includes a transistor Q2, a diode D3, a capacitor C4, a diode D5 and a diode D6.

[0008] As a further optimization of the above-mentioned intelligent portable power output system: the charging circuit includes an overcurrent protection subcircuit, and the overcurrent protection subcircuit includes a sampling resistor R4.

[0009] As a further optimization of the above-mentioned intelligent portable power output system: the charging circuit includes an isolation subcircuit, and the isolation subcircuit includes an active winding L1 and a passive winding L3.

[0010] As a further optimization of the above-mentioned intelligent portable power output system: the system includes a shell, on which are provided a plurality of input interfaces and a plurality of output interfaces, wherein the input interface is electrically connected to the main power supply circuit, and the output interface is used to connect the load, and a plurality of cavities are also provided in the shell, and the energy storage modules are correspondingly arranged in the cavities, and the cavities are also provided with a cover that can open or close the cavities.

[0011] As a further optimization of the above-mentioned intelligent portable power output system: the shell is connected to a mounting mechanism, the mounting mechanism includes two connecting plates fixedly connected to the shell and parallel to each other, an installation space is formed between the two connecting plates, an adjusting bolt is passed through the connecting plate, and one end of the adjusting bolt located in the installation space is fixedly connected to a clamping plate.

[0012] As a further optimization of the above-mentioned intelligent portable power output system: the connecting plate is vertically fixedly connected to the mounting plate, and the mounting plate is located on the side of the connecting plate facing away from the mounting space, the mounting plate is fixedly connected to a connecting rod parallel to the connecting plate, the two connecting rods are detachably connected to a base plate, a push bolt is passed through the base plate, and the push bolt extends into the mounting space.

[0013] As a further optimization of the above-mentioned intelligent portable power output system: a movable plate is slidably arranged between the two connecting plates, and the movable plate is detachably connected to two plug rods. A channel is opened on the connecting plate, and the plug rods are correspondingly inserted into the channel, and the pushing bolt can push the movable plate to move toward the outer shell.

[0014] Beneficial effects: The present invention can choose to use the power grid to power the smart meter or use the energy storage component to power the smart meter according to the power supply status of the power grid, ensuring that the smart meter can perform the monitoring function normally regardless of whether the power grid has electricity, and can fully grasp the status of the power grid equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the overall structural diagram of the present invention;

[0016] Figure 2 This is the schematic diagram of the charging circuit;

[0017] Figure 3 It is a schematic diagram of the structure of the shell;

[0018] Figure 4 It is a structural diagram of the installation mechanism.

[0019] Description of the drawings: 1-housing, 2-output interface, 3-input interface, 4-cover plate, 5-connecting plate, 6-channel, 7-top block, 8-movable plate, 9-clamping plate, 10-connecting rod, 11-base plate, 12-connecting hole, 13-screw hole, 14-pushing bolt, 15-mounting plate, 16-adjusting bolt. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] like Figure 1 As shown, an intelligent portable power output system includes a main control module, a main power supply circuit, an energy storage component, a backup power supply circuit and a charging circuit.

[0022] Main control module.

[0023] The main power supply circuit is used to obtain power from the power grid and discharge it to the outside. The output end of the main power supply circuit is connected to a first switch module electrically connected to the main control module.

[0024] The energy storage component includes a plurality of energy storage modules.

[0025] The backup power supply circuit is used to draw power from the energy storage module and discharge it to the outside. The output end of the backup power supply circuit is connected to a second switch module electrically connected to the main control module.

[0026] The charging circuit is used to draw power from the main power supply circuit and supply power to the energy storage module.

[0027] The present invention is mainly applied to various smart meters of smart grid. When in use, it is installed near the smart meter, the main power supply circuit is connected to the power grid and draws power from the power grid, and after the control module controls the first switch module to switch to the closed state, the main power supply circuit supplies power to the smart meter; on the other hand, the main power supply circuit also supplies power to the energy storage module to realize charging of the energy storage module; when the power grid is powered off, the main control module controls the first switch module to switch to the disconnected state, and controls the second switch module to switch to the closed state, so as to use the energy storage component to supply power to the smart meter through the backup power supply circuit, ensuring that the smart meter can still smoothly realize the monitoring of the power grid equipment. The multiple energy storage modules in the energy storage component can be set in a certain order. When the energy storage component is used to supply power to the smart meter, the energy storage modules are discharged in the order of the energy storage modules, that is, the first energy storage module is used to supply power to the smart meter first. When the power of the first energy storage module is lower than the preset minimum threshold, it is switched to the second energy storage module to supply power to the smart meter, and so on. When the power grid resumes power supply, the control module switches the second switch module to the open state again and switches the first switch module to the closed state again, and while reusing the main power supply circuit to supply power to the smart meter, charges the energy storage module whose power is below the minimum threshold.

[0028] The present invention can choose to use the power grid to power the smart meter or use the energy storage component to power the smart meter according to the power supply status of the power grid, ensuring that the smart meter can normally perform the monitoring function regardless of whether the power grid has power or not, and can fully grasp the status of the power grid equipment.

[0029] In order to facilitate the control of the process of the main power supply circuit charging the energy storage component, a third switch module electrically connected to the main control module is connected between the main power supply circuit and the charging circuit.

[0030] It should also be noted that in the present invention, the main power supply circuit and the backup power supply circuit are both mature existing technologies. For example, the main power supply circuit may include a transformer, a rectifier circuit, and a short-circuit protection circuit, and the backup power supply circuit may include an inverter, a voltage stabilizing circuit, and a power-off protection circuit, which will not be repeated here.

[0031] In order to improve the portability of the present invention and further improve the flexibility of the present invention when used, in the present invention, the energy storage module is composed of multiple 21700 lithium batteries. On this basis, in order to smoothly charge the energy storage module, such as Figure 2As shown, the charging circuit includes an input subcircuit, a voltage stabilization subcircuit, an overcurrent protection subcircuit and an isolation subcircuit. The input subcircuit includes a half-wave rectifier circuit unit and a short-circuit protection unit. The half-wave rectifier unit includes a diode D1 and a capacitor C1. The diode D1 and the capacitor C1 realize half-wave rectification of the grid current to protect the smart meter. The short-circuit protection unit includes a resistor R6. When a short circuit occurs, the resistor R6 can be damaged, thereby cutting off the input subcircuit to avoid damage to other devices or smart meters. The voltage stabilization subcircuit includes a transistor Q2, a diode D3, a capacitor C4, a diode D5 and a diode D6. When the voltage increases, the voltage of the capacitor C4 increases, while the voltage across the diode D6 remains unchanged, so that the left end potential is pulled down, thereby lowering the base potential of the transistor Q2, shortening its saturation time, and achieving the purpose of voltage stabilization. The overcurrent protection subcircuit includes a sampling resistor R4; the isolation subcircuit includes an active winding L1 and a passive winding L3.

[0032] Further, such as Figure 3 As shown, the system includes a housing 1, on which are disposed a plurality of input interfaces 3 and a plurality of output interfaces 2, wherein the input interface 3 is electrically connected to the main power supply circuit, and the output interface 2 is used to connect the load. A plurality of cavities are also disposed in the housing 1, and the energy storage modules are correspondingly disposed in the cavities, and the cavities are also provided with a cover 4 capable of opening or closing the cavities. When the power grid cannot restore power supply for a long time, the power of some energy storage modules will drop significantly. If the power of all energy storage modules is lower than the minimum threshold, the smart meter will completely lose power supply. By providing the cavity and the cover 4, when the power of some energy storage modules is lower than the minimum threshold, the cover 4 can be manually opened, and the energy storage module with sufficient power can be replaced, thereby ensuring stable power supply to the smart meter, protecting the smart meter, and ensuring continuous monitoring of the power grid equipment.

[0033] In order to facilitate the fixing of the housing 1 near the smart meter, so as to facilitate the connection of the backup power supply circuit and the smart meter, such as Figure 4 As shown, the housing 1 is connected with a mounting mechanism, which includes two connecting plates 5 fixedly connected to the housing 1 and parallel to each other, and a mounting space is formed between the two connecting plates 5. The connecting plates 5 are provided with adjusting bolts 16, and one end of the adjusting bolts 16 located in the mounting space is fixedly connected with a clamping plate 9. A structure such as a pole tower of a power grid can be selected as the mounting position. After determining the mounting position of the housing 1, the housing 1 is placed on the structure such as a pole tower, and then the clamping plate 9 is driven to move by the adjusting bolts 16 until the two clamping plates 9 clamp the structure such as the pole tower of the power grid, and the housing 1 can be fixed. The fixing method of this structure is simple and has strong versatility, and the housing 1 can be flexibly fixed at various positions.

[0034] In order to further improve the stability of the shell 1 after it is fixed, the connecting plate 5 is vertically fixedly connected to the mounting plate 15, and the mounting plate 15 is located on the side of the connecting plate 5 facing away from the installation space. The mounting plate 15 is fixedly connected to a connecting rod 10 parallel to the connecting plate 5. The two connecting rods 10 are detachably connected to a base plate 11. The base plate 11 has two connecting holes 12 that cooperate with the connecting rods 10. The connecting rod 10 passes through the connecting hole 12 and is inserted through a nut. A pushing bolt 14 is also penetrated on the base plate 11, and the pushing bolt 14 extends into the installation space. The base plate 11 has a screw hole 13 that cooperates with the pushing bolt 14. After the outer shell 1 is fixed by clamping the pole tower and other structures of the power grid with the clamping plate 9, the base plate 11 is connected to the two connecting rods 10, and then the pushing bolt 14 is passed through the base plate 11, and the pushing bolt 14 is rotated to adjust the depth of the part of the pushing bolt 14 extending into the installation space until the pushing bolt 14 is also tightened on the pole tower and other structures. At this time, the outer shell 1, the pushing bolt 14 and the two clamping plates 9 clamp the pole tower and other structures from different directions respectively, thereby achieving the effect of improving the stability of the outer shell 1.

[0035] In order to prevent the push bolt 14 from being unable to align with structures such as poles and towers, and to avoid damaging these structures, a moving plate 8 is slidably arranged between the two connecting plates 5. The moving plate 8 is detachably connected to two plug rods. A channel 6 is provided on the connecting plate 5, and the plug rods are correspondingly inserted into the channel. The push bolt 14 can push the moving plate 8 to move toward the housing 1. Before connecting the base plate 11 with the connecting rod 10, the moving plate 8 is first placed in the installation space, and the moving plate 8 is in contact with both the two mounting plates 15. Then, the two plug rods are connected to the moving plate 8 through the channel 6. At this time, the plug rod and the channel 6 cooperate to limit the moving direction of the moving plate 8. Then, the connecting rod 10 is connected to the base plate 11, and the moving plate 8 is pushed to move by the push bolt 14, so that the moving plate 8 is in contact with structures such as poles and towers. Because the area of ​​the moving plate 8 is larger, the problem that the push bolt 14 may not be able to contact with structures such as poles and towers can be effectively solved.

[0036] A top block 7 may also be fixedly arranged on the movable plate 8, the cross section of the top block 7 is trapezoidal and the bottom is in contact with the movable plate 5, and the top of the top block 7 is in contact with the pole tower, etc. The top block 7 may be made of rubber or other materials, and can be appropriately deformed under the action of the push bolt 14, and the push bolt 14 is prevented from loosening by the force of rebound. The above description of the disclosed embodiments enables professionals and technicians in this field to implement or use the present invention. Various modifications to these embodiments will be obvious to professionals and technicians in this field, and the general principles defined in this article can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown in this article, but will conform to the widest range consistent with the principles and novel features disclosed in this article.

Claims

1. An intelligent portable power output system, characterized in that: include: Main control module; A main power supply circuit, used for obtaining power from a power grid and discharging power to the outside, wherein an output end of the main power supply circuit is connected to a first switch module electrically connected to the main control module; An energy storage component, including a plurality of energy storage modules; A backup power supply circuit, used for taking power from the energy storage module and discharging it to the outside, wherein the output end of the backup power supply circuit is connected to a second switch module electrically connected to the main control module; A charging circuit is used to draw power from the main power supply circuit and supply power to the energy storage module.

2. An intelligent portable power output system as claimed in claim 1, characterized in that: A third switch module electrically connected to the main control module is connected between the main power supply circuit and the charging circuit.

3. The intelligent portable power output system according to claim 1, characterized in that: The charging circuit includes an input subcircuit, which includes a half-wave rectification circuit unit and a short-circuit protection unit. The half-wave rectification unit includes a diode D1 and a capacitor C1, and the short-circuit protection unit includes a resistor R6.

4. The intelligent portable power output system according to claim 1, characterized in that: The charging circuit includes a voltage stabilizing subcircuit, which includes a transistor Q2, a diode D3, a capacitor C4, a diode D5 and a diode D6.

5. The intelligent portable power output system according to claim 1, characterized in that: The charging circuit includes an overcurrent protection subcircuit, and the overcurrent protection subcircuit includes a sampling resistor R4.

6. The intelligent portable power output system according to claim 1, characterized in that: The charging circuit includes an isolation subcircuit, and the isolation subcircuit includes an active winding L1 and a passive winding L3.

7. The intelligent portable power output system according to claim 1, characterized in that: The system comprises a housing (1), and a plurality of input interfaces (3) and a plurality of output interfaces (2) are arranged on the housing (1), wherein the input interfaces (3) are electrically connected to the main power supply circuit, and the output interfaces (2) are used to connect to a load, and a plurality of cavities are also arranged in the housing (1), and the energy storage modules are correspondingly arranged in the cavities, and the cavities are also provided with cover plates (4) capable of opening or closing the cavities.

8. An intelligent portable power output system as claimed in claim 7, characterized in that: The housing (1) is connected to a mounting mechanism, the mounting mechanism comprising two connecting plates (5) fixedly connected to the housing (1) and parallel to each other, a mounting space being formed between the two connecting plates (5), an adjusting bolt (16) being passed through the connecting plate (5), and one end of the adjusting bolt (16) located in the mounting space being fixedly connected to a clamping plate (9).

9. An intelligent portable power output system as claimed in claim 8, characterized in that: The connecting plate (5) is vertically fixedly connected to a mounting plate (15), and the mounting plate (15) is located on a side of the connecting plate (5) facing away from the mounting space. The mounting plate (15) is fixedly connected to a connecting rod (10) which is parallel to the connecting plate (5). The two connecting rods (10) are detachably connected to a base plate (11). A pushing bolt (14) is passed through the base plate (11), and the pushing bolt (14) extends into the mounting space.

10. The intelligent portable power output system according to claim 8, characterized in that: A movable plate (8) is slidably arranged between the two connecting plates (5), and the movable plate (8) is detachably connected to two insertion rods. A channel (6) is provided on the connecting plate (5), and the insertion rods are correspondingly inserted into the channel. The pushing bolt (14) can push the movable plate (8) to move toward the housing (1).

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