Electric energy metering assembly of intelligent time sequencer power supply

Abstract

The utility model discloses an electric energy metering assembly of an intelligent time sequencer power supply, the intelligent time sequencer power supply comprises a live wire, a zero wire and a single-chip microcomputer, and the electric energy metering assembly comprises an AC-DC switching power supply, a current transformer, a current type voltage transformer and an electric energy metering chip; the input end of the AC-DC switching power supply is used for connecting a live wire and a zero wire, and the output end of the AC-DC switching power supply is connected to the electric energy metering chip to supply power to the electric energy metering chip; the first side of the current transformer is used for connecting a live wire and a zero wire, and the second side of the current transformer is connected to the electric energy metering chip; the first side of the current type voltage transformer is used for connecting a live wire and a zero wire, and the second side of the current type voltage transformer is connected to the electric energy metering chip; the output end of the electric energy metering chip is used for connecting the single-chip microcomputer. The assembly can improve the stability and reliability of the power supply of the electric energy metering assembly. The method can be widely applied to the technical field of electronic equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic equipment, in particular to an electric energy metering component of an intelligent sequential device power supply. Background Art

[0002] With the development of electronic technology, related applications have gradually been promoted and popularized. Among them, the smart sequencer power supply is an intelligent power management device that can monitor, control and optimize power consumption. It usually includes some key components, among which the power metering component is responsible for measuring and recording power consumption. The power metering component of the smart sequencer power supply is generally used to detect and record the current, voltage and power consumption of each output circuit, such as power consumption time, power change and other information, which is very important for the work of the smart sequencer power supply.

[0003] In the related technology, the power supply of the electric energy metering component in the smart timer power supply is often directly taken from the live wire through the related rectifier and transformer chip, and the related data collection has not been isolated and processed, which can easily burn out, affecting the normal operation of the smart timer power supply and giving users a poor experience.

[0004] In summary, the problems existing in the relevant technologies need to be solved urgently. Utility Model Content

[0005] The purpose of the utility model is to solve one of the technical problems existing in the related art to at least a certain extent.

[0006] Therefore, one object of the present invention is to provide an electric energy metering component for an intelligent sequencer power supply.

[0007] In order to achieve the above technical objectives, the technical solutions adopted by the utility model include:

[0008] On the one hand, an embodiment of the utility model provides an energy metering component of an intelligent sequencer power supply, wherein the intelligent sequencer power supply includes a live wire, a neutral wire and a single-chip microcomputer, and the energy metering component includes:

[0009] AC-DC switching power supplies, current transformers, current-type voltage transformers and energy metering chips;

[0010] The input end of the AC-DC switching power supply is used to connect the live wire and the neutral wire, and the output end of the AC-DC switching power supply is connected to the electric energy metering chip to supply power to the electric energy metering chip;

[0011] The first side of the current transformer is used to connect the live wire and the neutral wire, and the second side of the current transformer is connected to the electric energy metering chip; the first side of the current-type voltage transformer is used to connect the live wire and the neutral wire, and the second side of the current-type voltage transformer is connected to the electric energy metering chip;

[0012] The output end of the electric energy metering chip is used to connect to the single chip microcomputer.

[0013] In addition, the energy metering component of the intelligent sequencer power supply according to the above embodiment of the utility model may also have the following additional technical features:

[0014] Furthermore, in an embodiment of the present invention, the output voltage of the AC-DC switching power supply is 5V, and the output current is 1A.

[0015] Furthermore, in an embodiment of the present invention, the model of the electric energy metering chip is HLW8032.

[0016] Furthermore, in one embodiment of the present utility model, the electric energy metering component further includes a third capacitor and a tenth capacitor; the resistance of the third capacitor is greater than the resistance of the tenth capacitor;

[0017] The output end of the AC-DC switching power supply includes a first port and a second port, the first port is connected to the first end of the third capacitor and the first end of the tenth capacitor, the second port, the second end of the third capacitor and the second end of the tenth capacitor are grounded, and the first port is also connected to the first pin of the electric energy metering chip.

[0018] Further, in one embodiment of the utility model, the electric energy metering component also includes an eleventh capacitor and a thirteenth capacitor;

[0019] The first port is also grounded through a parallel branch formed by the eleventh capacitor and the thirteenth capacitor.

[0020] Further, in one embodiment of the utility model, the electric energy metering component also includes a sixteenth resistor, a seventeenth resistor, and an eighteenth resistor;

[0021] The second side of the current transformer includes a third port and a fourth port, the third port is connected to the first end of the sixteenth resistor and the first end of the seventeenth resistor, the second end of the sixteenth resistor is connected to the second pin of the electric energy metering chip, the fourth port is connected to the second end of the seventeenth resistor and the first end of the eighteenth resistor, and the second end of the eighteenth resistor is connected to the third pin of the electric energy metering chip.

[0022] Furthermore, in one embodiment of the present utility model, the electric energy metering component further includes a twelfth capacitor and a fourteenth capacitor;

[0023] The first end of the twelfth capacitor is grounded, and the second end of the twelfth capacitor is connected to the second pin of the electric energy metering chip; the first end of the fourteenth capacitor is grounded, and the second end of the fourteenth capacitor is connected to the third pin of the electric energy metering chip.

[0024] Further, in one embodiment of the utility model, the electric energy metering component also includes a nineteenth resistor, a twentieth resistor and a fifteenth capacitor;

[0025] The second side of the current-type voltage transformer includes a fifth port and a sixth port, the sixth port is grounded, the fifth port is connected to the first end of the nineteenth resistor and the first end of the twentieth resistor, the second end of the nineteenth resistor is connected to the fourth pin of the electric energy metering chip, the second end of the twentieth resistor is grounded, the first end of the fifteenth capacitor is connected to the fourth pin of the electric energy metering chip, and the second end of the fifteenth capacitor is grounded.

[0026] Furthermore, in one embodiment of the present utility model, the electric energy metering component further includes a housing;

[0027] The AC-DC switching power supply, the current transformer, the current type voltage transformer and the electric energy metering chip are arranged on a first side inside the shell, and a plurality of holes are provided on a second side of the shell away from the first side, and the holes are used to connect the live wire, the neutral wire and the single chip microcomputer.

[0028] The advantages and beneficial effects of the present invention will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present invention:

[0029] The present application discloses an electric energy metering component of an intelligent timer power supply, the intelligent timer power supply includes a live wire, a neutral wire and a single-chip microcomputer, and the electric energy metering component includes: an AC-DC switching power supply, a current transformer, a current-type voltage transformer and an electric energy metering chip; the input end of the AC-DC switching power supply is used to connect the live wire and the neutral wire, and the output end of the AC-DC switching power supply is connected to the electric energy metering chip to power the electric energy metering chip; the first side of the current transformer is used to connect the live wire and the neutral wire, and the second side of the current transformer is connected to the electric energy metering chip; the first side of the current-type voltage transformer is used to connect the live wire and the neutral wire, and the second side of the current-type voltage transformer is connected to the electric energy metering chip; the output end of the electric energy metering chip is used to connect the single-chip microcomputer. The circuit structure in the component adopts an isolated design, which can improve the stability and reliability of the power supply of the electric energy metering component and reduce the probability of being burned out; and the collection of relevant circuit data through an isolated circuit can improve safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of a circuit principle of an electric energy metering component provided in the related art is shown;

[0031] Figure 2 A schematic diagram of the circuit structure of an electric energy metering component provided in an embodiment of the present application is shown;

[0032] Figure 3 A schematic diagram of a circuit principle of an electric energy metering component provided in an embodiment of the present application is shown;

[0033] Figure 4 A schematic structural diagram of an electric energy metering component provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] In the description of the present utility model, it is necessary to understand that the terms "length", "upper", "lower", "front", "back", "left", "right", "top", "inner", "outer", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model 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 therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] With the development of electronic technology, related applications have gradually been promoted and popularized. Among them, the smart sequencer power supply is an intelligent power management device that can monitor, control and optimize power consumption. It usually includes some key components, among which the power metering component is responsible for measuring and recording power consumption. The power metering component of the smart sequencer power supply is generally used to detect and record the current, voltage and power consumption of each output circuit, such as power consumption time, power change and other information, which is very important for the work of the smart sequencer power supply.

[0038] In the related art, the power supply of the energy metering component in the smart timer power supply is often directly taken from the live wire through the related rectifier and transformer chip, and the related data collection is not isolated and processed, which is easy to burn out, affecting the normal operation of the smart timer power supply and the user experience is poor. For example, please refer to Figure 1 , Figure 1 The schematic diagram of the circuit principle of an electric energy metering component of an intelligent timer power supply provided in the related art is shown. Figure 1 It can be seen that the power supply of the energy metering component is obtained by stepping down the voltage of the MP150 chip. The MP150 chip uses the neutral line as the reference ground. There is a large voltage difference between it and the earth, which can easily burn out and cause the energy metering component to fail to work properly. Moreover, there is no isolation between the energy metering chip HLW8032 used to collect voltage and current and the live wire, which has low safety.

[0039] In view of this, an embodiment of the present application provides an energy metering component of an intelligent timer power supply, in which the circuit structure adopts an isolated design, which can improve the stability and reliability of the power supply of the energy metering component and reduce the probability of burning out; and, by collecting relevant circuit data through an isolated circuit, safety can be improved.

[0040] Below, in conjunction with specific drawings, an electric energy metering component of an intelligent sequencer power supply provided in an embodiment of the present application is described in detail.

[0041] The present application provides an energy metering component for an intelligent timer power supply, which can be applied to the technical field of electronic equipment. Figure 2 , Figure 2 A circuit structure schematic diagram of an electric energy metering component of an intelligent timer power supply provided in an embodiment of the present application is shown. The intelligent timer power supply in the embodiment of the present application includes a neutral wire and a live wire, and also includes a single-chip microcomputer, wherein the neutral wire and the live wire are used to output power, and the single-chip microcomputer can be used to control the on and off of different power supplies to achieve timing control.

[0042] The electric energy metering component in the embodiment of the present application mainly includes:

[0043] AC-DC switching power supplies, current transformers, current-type voltage transformers and energy metering chips;

[0044] The input end of the AC-DC switching power supply is used to connect the live wire and the neutral wire, and the output end of the AC-DC switching power supply is connected to the electric energy metering chip to supply power to the electric energy metering chip;

[0045] The first side of the current transformer is used to connect the live wire and the neutral wire, and the second side of the current transformer is connected to the electric energy metering chip; the first side of the current-type voltage transformer is used to connect the live wire and the neutral wire, and the second side of the current-type voltage transformer is connected to the electric energy metering chip;

[0046] The output end of the electric energy metering chip is used to connect to the single chip microcomputer.

[0047] In the embodiment of the present application, the electric energy metering component includes an AC-DC switching power supply, a current transformer, a current type voltage transformer and an electric energy metering chip. Among them, the AC-DC switching power supply is a power supply device that converts alternating current into direct current. It can include circuits such as rectification, filtering, power factor correction, and regulation, which can convert the input alternating current into a stable output direct current to supply power to various electronic devices. The AC-DC switching power supply has the advantages of high efficiency, small size, light weight, good stability, etc., and is widely used in various electronic products. In the embodiment of the present application, the input end of the AC-DC switching power supply is used to connect the live wire and the neutral wire, and the AC power is connected from the intelligent timer power supply. In the AC-DC switching power supply, there is a key isolation device-a transformer, that is, the AC-DC switching power supply is isolated by the primary and secondary windings, and the output end of the AC-DC switching power supply is connected to the electric energy metering chip, and the output direct current can be supplied to the electric energy metering chip. Compared with the traditional method of using a rectifier step-down chip to power the electric energy metering chip, the use of an AC-DC switching power supply can achieve high voltage isolation, is not easy to burn out, and has better operating stability. In the embodiment of the present application, the output voltage of the AC-DC switching power supply can be 5V, and the output current can be 1A.

[0048] A current transformer is a sensor for measuring current, usually used to monitor current changes in a circuit. It senses the current in the circuit and converts the current signal into a voltage signal output that is proportional to the current for easy measurement and monitoring. Current transformers are widely used in power systems, electrical equipment, motor control and other fields for real-time monitoring of current size, protection of equipment and system safety, etc. In the embodiment of the present application, a current transformer is used to detect the current data output by the power supply of the intelligent sequencer. In terms of circuit structure, the current transformer includes two sides, wherein the first side is connected to the live wire and the neutral wire, and the second side is connected to the electric energy metering chip. A current-type voltage transformer is a sensor that converts voltage signals. It is usually composed of a transformer part and a signal processing circuit part, and can realize the isolation and voltage reduction functions of the voltage signal. Current-type voltage transformers are widely used in power systems to measure voltage signals in high-voltage power grids to facilitate monitoring of power grid status, protection of equipment and system stability. In the embodiment of the present application, a current-type voltage transformer is used to detect the voltage data output by the power supply of the intelligent sequencer. Similarly, in terms of circuit structure, the current-source voltage transformer includes two sides, wherein the first side is connected to the live wire and the neutral wire, and the second side is connected to the electric energy metering chip.

[0049] In the embodiment of the present application, the output end of the electric energy metering chip is used to connect to the single-chip microcomputer of the intelligent sequencer power supply, and transmit the collected current data and voltage data to the intelligent sequencer power supply. It can be understood that the intelligent sequencer power supply generally includes multiple outputs. Therefore, the electric energy metering component in the embodiment of the present application can be configured with multiple, and the output end of each electric energy metering chip is simultaneously connected to a single-chip microcomputer of the intelligent sequencer power supply, so that the single-chip microcomputer of the intelligent sequencer power supply can obtain the power output data of each channel, which is convenient for statistics and can also reduce the hardware implementation cost.

[0050] It is understandable that the electric energy metering components in the embodiments of the present application use an isolated circuit structure in the circuits related to power supply, current acquisition and voltage acquisition, which can effectively isolate the electrical connection between the measured circuit and the measuring device, avoid mutual influence and interference between the circuits, and improve the safety of the system. In high voltage or high current environments, isolated circuits can ensure that operators and equipment are protected from electric shock or other dangers. Moreover, isolated circuits usually have better compatibility, can adapt to the measurement requirements of different voltage and current ranges, and can also reduce electrical interference with other devices and improve the stability of the system. Secondly, isolated circuits can reduce the impact of interference and noise on the measurement results and improve the precision and accuracy of the measurement. Electric energy metering requires accurate measurement of electric energy consumption, and the use of isolated circuits can ensure the reliability of the measurement results. In addition, the design of isolated circuits is usually simpler and clearer, and easy to maintain and manage. When a system fails, isolated circuits can help quickly locate the problem, and perform repairs and debugging, reducing maintenance costs and time.

[0051] In some embodiments, the model of the electric energy metering chip used in the present application may be HLW8032. The HLW8032 chip is a high-precision electric energy metering IC, which uses CMOS manufacturing technology and is mainly used for single-phase applications. It can measure line voltage and current, and can calculate active power, apparent power and power factor, and has the advantages of high accuracy, low power consumption, high reliability, and strong environmental adaptability.

[0052] Reference Figure 3 , Figure 3 This is a schematic diagram of the circuit principle of an electric energy metering component provided in an embodiment of the present application. Figure 3 , some circuit settings in the embodiments of the present application are introduced and explained.

[0053] In some embodiments, the electric energy metering component further includes a third capacitor E3 and a tenth capacitor C10; the resistance of the third capacitor E3 is greater than the resistance of the tenth capacitor C10;

[0054] The output end of the AC-DC switching power supply includes a first port and a second port, the first port is connected to the first end of the third capacitor E3 and the first end of the tenth capacitor C10, the second port, the second end of the third capacitor E3 and the second end of the tenth capacitor C10 are grounded, and the first port is also connected to the first pin of the electric energy metering chip.

[0055] In the embodiment of the present application, the electric energy metering component includes a third capacitor E3 and a tenth capacitor C10, and the output end of the AC-DC switching power supply includes a first port and a second port. After rectification, the output voltage is provided to the electric energy metering chip through the third capacitor E3 and the tenth capacitor C10. Here, the resistance of the third capacitor E3 is greater than the resistance of the tenth capacitor C10, and the function of the two of them is to filter the voltage. The electric energy metering component may also include an eleventh capacitor C11 and a thirteenth capacitor C13. The first port of the AC-DC switching power supply can be grounded through a parallel branch formed by the eleventh capacitor C11 and the thirteenth capacitor C13. The eleventh capacitor C11 and the thirteenth capacitor C13 are bypass capacitors of the electric energy metering chip, which can also play a role in stabilizing the voltage.

[0056] In some embodiments, the electric energy metering component further includes a sixteenth resistor R16, a seventeenth resistor R17, and an eighteenth resistor R18;

[0057] The second side of the current transformer includes a third port and a fourth port, the third port is connected to the first end of the sixteenth resistor R16 and the first end of the seventeenth resistor R17, the second end of the sixteenth resistor R16 is connected to the second pin of the electric energy metering chip, the fourth port is connected to the second end of the seventeenth resistor R17 and the first end of the eighteenth resistor R18, and the second end of the eighteenth resistor R18 is connected to the third pin of the electric energy metering chip.

[0058] In the embodiment of the present application, for the circuit of the current transformer part, the electric energy metering component may include a sixteenth resistor R16, a seventeenth resistor R17, and an eighteenth resistor R18. The second side of the current transformer includes two ports, which are recorded as the third port and the fourth port. The current transformer in the embodiment of the present application can be a clamped through-core mutual inductance detection mode, and the ratio of its windings can be 1000:1. After passing through the 1000:1 winding of the current transformer, the neutral line can be directly output to the power output port to supply power to the electrical equipment. Then, after the third port and the fourth port of the current transformer are sensed, a voltage U2 will be output after passing through an impedance of the seventeenth resistor R17. If the input voltage between the live wire and the neutral wire is U1, then U1:U2=1000:1. If the current is assumed to be I1 and the output is I2, then U2=I2*R17. According to the relevant axiom: I1: I2 = U2: U1, so when the current I1 increases, the voltage U1 remains unchanged, and the voltage U2 will also remain unchanged, then the current I2 will increase. After I2 increases, because U2 = I2*R17, U2 will eventually increase. Then the increased U2 will be monitored by the second pin (i.e., IP pin) and the third pin (i.e., IN pin) of the electric energy metering chip, thereby obtaining the corresponding current data. Although the increase of U2 in the circuit will also affect U1 at this time, the turns ratio of the transformer is 1000:1, and the change in U1 is very small and can be ignored. In the embodiment of the present application, the circuit also has a sixteenth resistor R16 and an eighteenth resistor R18, which are current limiting resistors from the detected output voltage U2 to the electric energy metering chip, and play a role in safety. In some embodiments, the electric energy metering component can also be provided with a twelfth capacitor C12 and a fourteenth capacitor C14, wherein the first end of the twelfth capacitor C12 is grounded, and the second end of the twelfth capacitor C12 is connected to the second pin of the electric energy metering chip; the first end of the fourteenth capacitor C14 is grounded, and the second end of the fourteenth capacitor C14 is connected to the third pin of the electric energy metering chip. The twelfth capacitor C12 and the fourteenth capacitor C14 are filter capacitors, which have a filtering effect on interference signals, and can improve the accuracy of current detection.

[0059] In some embodiments, the electric energy metering component further includes a nineteenth resistor R19, a twentieth resistor R20 and a fifteenth capacitor C15;

[0060] The second side of the current-type voltage transformer includes a fifth port and a sixth port, the sixth port is grounded, the fifth port is connected to the first end of the nineteenth resistor R19 and the first end of the twentieth resistor R20, the second end of the nineteenth resistor R19 is connected to the fourth pin of the electric energy metering chip, the second end of the twentieth resistor R20 is grounded, the first end of the fifteenth capacitor C15 is connected to the fourth pin of the electric energy metering chip, and the second end of the fifteenth capacitor C15 is grounded.

[0061] In the embodiment of the present application, for the circuit of the current-type voltage transformer part, the electric energy metering component may include a nineteenth resistor R19, a twentieth resistor R20 and a fifteenth capacitor C15. In the embodiment of the present application, the second side of the current-type voltage transformer also includes two ports, which can be recorded as the fifth port and the sixth port. The turns ratio of the current-type voltage transformer can be 1000:1000, so that the voltage output of the live wire and the neutral wire can be directly detected. The twentieth resistor R20 is the load of the secondary winding, the nineteenth resistor R19 is a current limiting resistor to prevent damage to the electric energy metering chip, and the fifteenth capacitor C15 can play a filtering role.

[0062] Please refer to Figure 4 In some embodiments, the electric energy metering component further includes a housing;

[0063] The AC-DC switching power supply 410, the current transformer 420, the current type voltage transformer 430 and the electric energy metering chip 440 are arranged on a first side inside the shell, and the shell has a plurality of holes 450 on a second side away from the first side, and the holes 450 are used to connect the live wire, the neutral wire and the single chip microcomputer.

[0064] In the embodiment of the present application, the overall structure of the electric energy metering component is also improved. Specifically, Figure 4 As shown, in an embodiment of the present application, the electric energy metering component may include a housing, in which various components may be arranged, and the AC-DC switching power supply, current transformer, current type voltage transformer and electric energy metering chip therein may be arranged on one side, which is recorded as the first side. On the second side, a number of holes may be provided, which may be used to access the live wire, the neutral wire and the single-chip microcomputer of the intelligent timer power supply. In this way, when in use, access or removal can be achieved through a simple plug-in operation, which can greatly improve the flexibility of use of the electric energy metering component. Moreover, in an embodiment of the present application, the components of the electric energy metering component are arranged on the first side, and the interface including the holes is arranged on the second side. When in use, the side that is touched by personnel is a low-voltage area, and the side where the live wire and the neutral wire are located is not easily touched, which can improve the safety of use.

[0065] In the description of this specification, the description with reference to the terms "one embodiment", "another embodiment" or "certain embodiments" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0066] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An electric energy metering component for an intelligent sequencer power supply, characterized in that: The intelligent timer power supply includes a live wire, a neutral wire and a single-chip microcomputer, and the electric energy metering component includes: AC-DC switching power supplies, current transformers, current-type voltage transformers and energy metering chips; The input end of the AC-DC switching power supply is used to connect the live wire and the neutral wire, and the output end of the AC-DC switching power supply is connected to the electric energy metering chip to supply power to the electric energy metering chip; The first side of the current transformer is used to connect the live wire and the neutral wire, and the second side of the current transformer is connected to the electric energy metering chip; the first side of the current-type voltage transformer is used to connect the live wire and the neutral wire, and the second side of the current-type voltage transformer is connected to the electric energy metering chip; The output end of the electric energy metering chip is used to connect to the single chip microcomputer.

2. The electric energy metering component of the intelligent sequential power supply according to claim 1, characterized in that: The output voltage of the AC-DC switching power supply is 5V, and the output current is 1A.

3. The electric energy metering component of the intelligent sequential power supply according to claim 1, characterized in that: The model of the electric energy metering chip is HLW8032.

4. The electric energy metering component of the intelligent sequential power supply according to claim 3, characterized in that: The electric energy metering component also includes a third capacitor and a tenth capacitor; the resistance of the third capacitor is greater than the resistance of the tenth capacitor; The output end of the AC-DC switching power supply includes a first port and a second port, the first port is connected to the first end of the third capacitor and the first end of the tenth capacitor, the second port, the second end of the third capacitor and the second end of the tenth capacitor are grounded, and the first port is also connected to the first pin of the electric energy metering chip.

5. The electric energy metering component of the intelligent sequential power supply according to claim 4, characterized in that: The electric energy metering component also includes an eleventh capacitor and a thirteenth capacitor; The first port is also grounded through a parallel branch formed by the eleventh capacitor and the thirteenth capacitor.

6. The electric energy metering component of the intelligent sequential power supply according to claim 3, characterized in that: The electric energy metering component also includes a sixteenth resistor, a seventeenth resistor, and an eighteenth resistor; The second side of the current transformer includes a third port and a fourth port, the third port is connected to the first end of the sixteenth resistor and the first end of the seventeenth resistor, the second end of the sixteenth resistor is connected to the second pin of the electric energy metering chip, the fourth port is connected to the second end of the seventeenth resistor and the first end of the eighteenth resistor, and the second end of the eighteenth resistor is connected to the third pin of the electric energy metering chip.

7. The electric energy metering component of the intelligent sequential power supply according to claim 6, characterized in that: The electric energy metering component also includes a twelfth capacitor and a fourteenth capacitor; The first end of the twelfth capacitor is grounded, and the second end of the twelfth capacitor is connected to the second pin of the electric energy metering chip; the first end of the fourteenth capacitor is grounded, and the second end of the fourteenth capacitor is connected to the third pin of the electric energy metering chip.

8. The electric energy metering component of the intelligent sequential power supply according to claim 3, characterized in that: The electric energy metering component also includes a nineteenth resistor, a twentieth resistor and a fifteenth capacitor; The second side of the current-type voltage transformer includes a fifth port and a sixth port, the sixth port is grounded, the fifth port is connected to the first end of the nineteenth resistor and the first end of the twentieth resistor, the second end of the nineteenth resistor is connected to the fourth pin of the electric energy metering chip, the second end of the twentieth resistor is grounded, the first end of the fifteenth capacitor is connected to the fourth pin of the electric energy metering chip, and the second end of the fifteenth capacitor is grounded.

9. The electric energy metering component of the intelligent sequential power supply according to claim 1, characterized in that: The electric energy metering component also includes a shell; The AC-DC switching power supply, the current transformer, the current type voltage transformer and the electric energy metering chip are arranged on a first side inside the shell, and a plurality of holes are provided on a second side of the shell away from the first side, and the holes are used to connect the live wire, the neutral wire and the single chip microcomputer.

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