Circuit of inverter state display scheme

Abstract

The utility model belongs to the technical field of inverters, and particularly relates to a circuit of an inverter state display scheme. The inverter comprises an inverter, the inverter is provided with a DSP control chip, the DSP control chip is connected with a control interface, the control interface is connected with a control expansion circuit module, the control interface is further connected with a key sampling circuit, and the control expansion circuit module is connected with a working state indicating lamp module. The control expansion circuit module is also connected with the electric quantity indicating lamp panel module. The control interface, the control expansion circuit module, the key sampling circuit and the working state indicating lamp module are designed on the first circuit board, and the electric quantity indicating lamp board module is designed on the arc-shaped second PCB. According to the utility model, control ports are expanded and functions are redefined and distributed, and control software is designed according to requirements to match a required display effect, so that better use experience is provided for a user, and meanwhile, the circuit scheme is simpler, the portability is strong, and the cost advantage is obvious.

Description

Technical Field

[0001] The utility model belongs to the technical field of inverters, and in particular relates to a circuit for displaying an inverter state. Background Art

[0002] The demand for photovoltaic inverters is booming around the world, especially in areas where the power system is yet to be improved, such as Africa and Central and West Asia. With the continuous advancement of technology and the increasing attention paid to renewable energy around the world, this demand continues to grow. In addition to meeting the basic power needs of users, photovoltaic inverters must also meet a variety of application scenarios in terms of functionality.

[0003] In order to meet the various needs of users, major inverter manufacturers have also made great efforts in the research and development of equipment. They not only focus on the performance of the inverter, but also add more practical elements to the appearance design and lighting display of the equipment to enhance the overall competitiveness of the product. In the market, we can see many cost-effective photovoltaic inverters. In addition to being equipped with a clear display screen, these inverters are usually designed with 3 LED lights to intuitively indicate the working status of the inverter. For example, a red light often represents a fault or alarm state, a green light means that the inverter is working normally and performing the inversion process, and a yellow light usually represents the charging state.

[0004] However, although such a design is practical, it is relatively traditional and its functional selling points are not outstanding. In order to improve the competitiveness of their products, some manufacturers have begun to try to adopt more advanced technologies. They use a separate integrated control chip to communicate with the inverter's main control chip, collect various working information, and then accurately control the display of the screen and light strip. Although such a design brings more functions, it also increases the manufacturing cost of the product accordingly, resulting in a higher price for the final product, which may have a certain purchase threshold for some users.

[0005] To this end, the utility model provides a circuit for displaying the status of an inverter. Utility Model Content

[0006] In view of the above-mentioned problems existing in the prior art, the purpose of the present invention is to provide a circuit for an inverter status display solution, by expanding the control port and redefining the functions, and designing the control software according to the requirements to match the required display effect, so as to achieve compatibility with controlling three status lights to reflect the working status of the inverter while controlling an additional 4 groups of LED light board modules. The user can observe the light prompts of the inverter from a distance to intuitively identify the working status of the inverter, battery power, etc., giving the user a better user experience. At the same time, the circuit solution is more streamlined, highly portable, and has obvious cost advantages.

[0007] The purpose of the utility model can be achieved through the following technical solutions:

[0008] A circuit for an inverter status display scheme includes an inverter, wherein the inverter is provided with a DSP control chip, wherein the DSP control chip is connected to a control interface, wherein the control interface is connected to a control expansion circuit module, wherein the control interface is also connected to a key sampling circuit, wherein the control expansion circuit module is connected to a working status indicator light module, wherein the control expansion circuit module is also connected to a power indicator light board module;

[0009] The control interface, control expansion circuit module, key sampling circuit and working status indicator light module are designed on a first circuit board, and the power indicator light board module is designed on an arc-shaped second PCB circuit board.

[0010] As a further preferred technical solution of the utility model, the control interface is provided with a wiring terminal CN1, the wiring terminal CN1 is connected to the inverter, the wiring terminal CN1 is provided with 9 interfaces, the interface 1 of the wiring terminal CN1 is connected to the +3.3V power supply and connected in parallel with the capacitor C1, the other end of the capacitor C1 is connected to the GND ground, and the interface 2 of the wiring terminal CN1 is connected to the GND ground;

[0011] Interfaces 3 to 5 of the wiring terminal CN1 are defined as LED_RCLK, LED_SRCLK and LED_SDI signal interfaces respectively, and the wiring terminal CN1 is connected to the control expansion circuit module via the LED_RCLK, LED_SRCLK and LED_SDI signal interfaces;

[0012] Interfaces 6 to 9 of the wiring terminal CN1 are defined as KB IN1, KB IN2, KB IN3 and KB IN4 interfaces respectively, and the wiring terminal CN1 is connected to the key sampling circuit via the KB IN1, KB IN2, KB IN3 and KB IN4 interfaces.

[0013] As a further preferred technical solution of the utility model, the control expansion circuit module is provided with a chip U1, and the chip U1 is connected to the terminal CN2, the terminal CN3, the terminal CN4 and the terminal CN5, and the terminal CN2, the terminal CN3, the terminal CN4 and the terminal CN5 are all connected to the power indicator light board module.

[0014] As a further preferred technical solution of the present invention, the chip U1 is provided with several interfaces.

[0015] ——————The several interface definitions of the chip U1 are RCLK, SCLK, SCLR, OE, SDI, GND, VDD, QA, QB, QC, QD, QE, QF, QG, QH and SDO interfaces. The GND interface is connected to the GND ground, the SDI interface is connected to the LED SDI interface, and the RLCK interface is connected to the LED RLCK interface.

[0016] ——————The SCLK interface is connected to the LED SRCLK interface, the SCLR interface is connected to the +3.3V power supply, and the SC——

[0017] The LR interface is also connected to capacitor C3, the other end of the capacitor C3 is connected to resistor R4, the other end of the resistor R4 is connected to OE, the VDD interface is connected to the +3.3 power supply, the VDD interface is also connected to capacitor C2, the other end of the capacitor C2 is connected to GND ground, and the QA, QB and QC interfaces are all connected to the working status indicator light module.

[0018] As a further preferred technical solution of the utility model, the wiring terminal CN2, the wiring terminal CN3, the wiring terminal CN4 and the wiring terminal CN5 are each provided with 4 interfaces, the interface 2 of the wiring terminal CN2, the wiring terminal CN3, the wiring terminal CN4 and the wiring terminal CN5 are all defined as the LED RED interface and connected to the QH interface, the interface 3 of the wiring terminal CN2, the wiring terminal CN3, the wiring terminal CN4 and the wiring terminal CN5 are all connected to the +3.3V power supply, and the interface 4 of the wiring terminal CN2, the wiring terminal CN3, the wiring terminal CN4 and the wiring terminal CN5 are all connected to the GND ground;

[0019] Interface 1 of the wiring terminal CN2 is defined as an LED ZS interface and is connected to the QD interface, interface 1 of the wiring terminal CN3 is defined as an LED YS interface and is connected to the QF interface, interface 1 of the wiring terminal CN4 is defined as an LED ZX interface and is connected to the QE interface, and interface 1 of the wiring terminal CN5 is defined as an LED YX interface and is connected to the QG interface.

[0020] As a further preferred technical solution of the utility model, the working status indicator light module includes a green indicator light circuit, a yellow indicator light circuit and a red indicator light circuit;

[0021] The green indicator light circuit is composed of a green LED light LED3, resistors R3, R8, R11, a capacitor C6 and a transistor Q3 electrically connected; the yellow indicator light circuit is composed of a yellow LED light LED2, resistors R2, R7, R9, a capacitor C5 and a transistor Q2 electrically connected; the red indicator light circuit is composed of a red LED light LED1, resistors R1, R6, R10, a capacitor C4 and a transistor Q1 electrically connected.

[0022] As a further preferred technical solution of the utility model, the power indicator light board module is provided with 4 groups, the power indicator light board module includes a wiring terminal CN6 and a power indicator light board circuit, the wiring terminal CN6 is connected to the wiring terminal CN2 or the wiring terminal CN3 or the wiring terminal CN4 or the wiring terminal CN5;

[0023] The wiring terminal CN6 is provided with four interfaces, interface 1 of the wiring terminal CN6 is defined as an LED BLU interface and is connected to the power indicator light board circuit, and interface 2 of the wiring terminal CN6 is defined as an LED RED and is also connected to the power indicator light board circuit.

[0024] As a further preferred technical solution of the utility model, the power indicator light board circuit is composed of blue light-emitting diodes D1, D3 and D5, red light-emitting diodes D2, D4 and D6, resistors R18, R21~R24, capacitors C11~C12, and transistors Q4~Q5 electrically connected.

[0025] As a further preferred technical solution of the present invention, the chip U1 is a logic chip, specifically a shift register chip, and its model is a 74HC595 signal chip.

[0026] As a further preferred technical solution of the present invention, the second PCB circuit board is a 1 / 4 arc shape, and 4 groups of the second PCB circuit boards are arranged. The 4 groups of second PCB circuit boards are connected to the first PCB circuit board through cables to form a circular light strip for synchronously displaying the power level.

[0027] As described above, the utility model provides a circuit for displaying the inverter status, which has the following features:

[0028] Beneficial effects:

[0029] 1. The utility model utilizes the above-mentioned circuit of an inverter status display solution. Compared with the prior art, the circuit design is simple but efficient, with less circuit cost increase, and occupies less control pins of the inverter DSP main control chip, achieving more information prompt effects.

[0030] 2. The utility model utilizes the above-mentioned circuit of an inverter status display solution. Compared with the prior art, it is compatible with the existing mature inverter hardware design. It can be directly adapted by matching the patented circuit and adjusting the software control logic, and has strong compatibility and portability.

[0031] 3. The utility model utilizes the above-mentioned circuit of an inverter status display solution. Compared with the prior art, the power indicator light module structure adopts an arc design, the PCB board utilization rate is high after the circuit board PCB is assembled, and the cost is excellent.

[0032] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0034] Figure 1 A schematic diagram of a circuit for displaying the inverter status of the utility model;

[0035] Figure 2 A schematic diagram of the circuit structure of a control interface and a control expansion circuit of a circuit of an inverter status display solution applied for the utility model;

[0036] Figure 3 A schematic diagram of the circuit structure of a key sampling circuit of a circuit of an inverter status display solution applied for the utility model;

[0037] Figure 4 A schematic diagram of the circuit structure of a working status indicator light module of a circuit of an inverter status display solution applied for the utility model;

[0038] Figure 5 The present invention is a schematic diagram of the circuit structure of a power indicator light board module of a circuit of an inverter status display solution applied for by the present invention.

[0039] Figure 6 This is one of the actual case effect diagrams of the circuit of an inverter status display solution applied for by the utility model;

[0040] Figure 7 This is the second actual case effect diagram of the circuit of an inverter status display solution applied for by the utility model;

[0041] Figure 8 This is the third actual case effect diagram of the circuit of an inverter status display solution applied for by the utility model;

[0042] Fig. 9 This is a fourth actual case effect diagram of a circuit of an inverter status display solution applied for by the utility model;

[0043] Summary of Figure Numbers:

[0044] 1. Control interface; 2. Control expansion circuit; 3. Green indicator light circuit; 4. Yellow indicator light circuit; 5. Red indicator light circuit. DETAILED DESCRIPTION

[0045] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0046] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that can be implemented in this utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that can be produced by the utility model and the purposes that can be achieved, should still fall within the scope of the technical content disclosed in this utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of this utility model. The change or adjustment of their relative relationship, without substantial change in the technical content, should also be regarded as the scope of the implementation of this utility model. The specific structure can be described with reference to the drawings of the patent application.

[0047] The utility model provides a circuit for displaying the inverter status. Figures 1 to 9 As shown, it includes an inverter, the inverter is provided with a DSP control chip, the DSP control chip is connected to the control interface, the control interface is connected to the control expansion circuit module, the control interface is also connected to the key sampling circuit, the control expansion circuit module is connected to the working status indicator light module, and the control expansion circuit module is also connected to the power indicator light board module;

[0048] The control interface, control expansion circuit module, key sampling circuit and working status indicator light module are designed on the first circuit board, and the power indicator light board module is designed on the arc-shaped second PCB circuit board;

[0049] The second PCB circuit board is in a 1 / 4 arc shape, and 4 groups of the second PCB circuit boards are provided. The 4 groups of the second PCB circuit boards are connected to the first PCB circuit board through cables to form a circular light strip for synchronously displaying the power level.

[0050] It should be noted that: For the lighting effect of the circular light strip, please refer to Figures 6 to 9 When the power level is 75% to 100%, the circular ring composed of 4 groups of light panels will all light up blue lights; when the power level is 50% to 74%, the circular ring light strip will light up blue lights; when the power level is 25% to 49%, the circular ring light strip will light up blue lights; when the power level is 0% to 24%, the circular ring light strip will light up red lights; and the circular light strip is composed of four small sections of arc light panels. Compared with the direct design of 4 sections of arc light strips on the same circular PCB, the utilization rate of PCB board materials is greatly improved and resources are saved. At the same time, the lighting logic effect, color, etc. of the circular light strip can be changed according to actual needs to adjust the control software and lamp bead selection.

[0051] Specifically, the specific structure of the control interface is as follows. Figure 2 As shown, in this embodiment, the control interface is provided with a wiring terminal CN1, the wiring terminal CN1 is connected to the inverter, the wiring terminal CN1 is provided with 9 interfaces, the interface 1 of the wiring terminal CN1 is connected to the +3.3V power supply and is connected in parallel with the capacitor C1, the other end of the capacitor C1 is connected to the GND ground, and the interface 2 of the wiring terminal CN1 is connected to the GND ground;

[0052] Interfaces 3 to 5 of the wiring terminal CN1 are defined as LED_RCLK, LED_SRCLK and LED_SDI signal interfaces respectively, and the wiring terminal CN1 is connected to the control expansion circuit module via the LED_RCLK, LED_SRCLK and LED_SDI signal interfaces;

[0053] Interfaces 6 to 9 of the wiring terminal CN1 are defined as KB IN1, KB IN2, KB IN3 and KB IN4 interfaces respectively, and the wiring terminal CN1 is connected to the key sampling circuit via the KB IN1, KB IN2, KB IN3 and KB IN4 interfaces.

[0054] Specifically, the specific structure of the control expansion circuit module is shown below. Figure 2 As shown, in this embodiment, the control expansion circuit module is provided with a chip U1, and the chip U1 is connected to the wiring terminal CN2, the wiring terminal CN3, the wiring terminal CN4 and the wiring terminal CN5, and the wiring terminal CN2, the wiring terminal CN3, the wiring terminal CN4 and the wiring terminal CN5 are all connected to the power indicator board module;

[0055] The chip U1 is a logic chip, specifically a shift register chip, and its model is a 74HC595 signal chip.

[0056] The chip U1 is provided with several interfaces, and the definitions of the several interfaces of the chip U1 are RCLK,

[0057] ——————SCLK, SCLR, OE, SDI, GND, VDD, QA, QB, QC, QD, QE, QF, QG, QH and SDO interfaces, the GND interface is connected to the GND ground, the SDI interface is connected to the LED SDI interface, the

[0058] The RLCK interface is connected to the LED RLCK interface, the SCLK interface is connected to the LED SRCLK interface, the SCLR interface is connected to the +3.3V power supply, and the SCLR interface is also connected to the capacitor C3. The other end of the capacitor C3

[0059] ——Connected to resistor R4, the other end of the resistor R4 is connected to OE, the VDD interface is connected to the +3.3 power supply, the VDD interface is also connected to capacitor C2, the other end of the capacitor C2 is grounded to GND, and the QA, QB and QC interfaces are all connected to the working status indicator light module.

[0060] It should be noted that: the LED RCLK, LED SRCLK, and LED SDI signal interfaces defined in the control interface correspond to the common GPIO control pins received from the inverter DSP control chip (the existing market solution is only used to control the red, green, and yellow status lights), and the chip 74HC595 is an 8-bit serial input and parallel output displacement buffer chip, which can be used to convert the control signal from serial to parallel, and can cache and maintain the output characteristics. The inverter control chip controls the LEDRCLK, LED SRCLK, and LED SDI, a total of 3 signals, through the U1 chip to convert them into 8 output signals and maintain the output, which are used to simultaneously control the red, green, and yellow status lights and 4 groups of segmented arc-shaped light panels to ultimately achieve the display effect of the status and power lights;

[0061] In addition, LED RCLK is the output control signal sent by the inverter DSP control, which is used to control the 8-bit control data (corresponding to 8 output signals) cached by the 74HC595 chip to refresh the output state and briefly pull the level high to trigger the chip action;

[0062] LED SRCLK is the synchronous clock signal sent by the inverter DSP control, which is used for synchronous communication with the 74HC595 chip and is a stable fixed-frequency PWM square wave signal;

[0063] LED SDI is the data bit signal sent by the inverter DSP control, corresponding to the status data written to the internal register circuit of the 74HC595 chip in each clock cycle, and each data refresh cycle transmits 8 data bit valid signals.

[0064] The wiring terminal CN2, the wiring terminal CN3, the wiring terminal CN4 and the wiring terminal CN5 are each provided with 4 interfaces, the interface 2 of the wiring terminal CN2, the wiring terminal CN3, the wiring terminal CN4 and the wiring terminal CN5 are all defined as LED RED interfaces and connected to the QH interface, the interface 3 of the wiring terminal CN2, the wiring terminal CN3, the wiring terminal CN4 and the wiring terminal CN5 are all connected to the +3.3V power supply, and the interface 4 of the wiring terminal CN2, the wiring terminal CN3, the wiring terminal CN4 and the wiring terminal CN5 are all connected to the GND ground;

[0065] Interface 1 of the wiring terminal CN2 is defined as an LED ZS interface and is connected to the QD interface, interface 1 of the wiring terminal CN3 is defined as an LED YS interface and is connected to the QF interface, interface 1 of the wiring terminal CN4 is defined as an LED ZX interface and is connected to the QE interface, and interface 1 of the wiring terminal CN5 is defined as an LED YX interface and is connected to the QG interface.

[0066] Specifically, the specific structure of the working status indicator light module is shown below. Figure 4 As shown, in this embodiment, the working status indicator light module includes a green indicator light circuit, a yellow indicator light circuit and a red indicator light circuit; the green indicator light circuit is composed of a green LED lamp LED3, resistors R3, R8, R11, a capacitor C6 and a transistor Q3 electrically connected; the yellow indicator light circuit is composed of a yellow LED lamp LED2, resistors R2, R7, R9, a capacitor C5 and a transistor Q2 electrically connected; the red indicator light circuit is composed of a red LED lamp LED1, resistors R1, R6, R10, a capacitor C4 and a transistor Q1 electrically connected.

[0067] In an embodiment, the power indicator panel module is provided with 4 groups. Specifically, the specific structure of the power indicator panel module is as follows. Figure 4 As shown, in this embodiment, the power indicator light board module includes a terminal CN6 and a power indicator light board circuit, and the terminal CN6 is connected to the terminal CN2 or the terminal CN3 or the terminal CN4 or the terminal CN5; the terminal CN6 is provided with 4 interfaces, the interface 1 of the terminal CN6 is defined as an LED BLU interface and is connected to the power indicator light board circuit, and the interface 2 of the terminal CN6 is defined as an LED RED and is also connected to the power indicator light board circuit.

[0068] The power indicator board circuit is composed of blue light emitting diodes D1, D3 and D5, red light emitting diodes D2, D4 and D6, resistors R18, R21-R24, capacitors C11-C12, and transistors Q4-Q5 electrically connected.

[0069] Please note: Please refer to Figures 2 to 5 , transistors Q1~Q5 are all NPN transistors, which act as switches;

[0070] Capacitors C1~C6 and C11~C12 are filter capacitors used to filter out signal interference;

[0071] Resistor R4 is a signal pull-down resistor; R1~R3, R1~R3, R6~R8, R18, R21, and R22 are current limiting resistors that limit the current flowing through the CE pole of the transistor and the LED lamp; resistors R9, R10, R11, R23, and R24 play the role of voltage division and discharge.

[0072] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A circuit for displaying the inverter status, comprising an inverter, characterized in that: The inverter is provided with a DSP control chip, the DSP control chip is connected to the control interface, the control interface is connected to the control expansion circuit module, the control interface is also connected to the key sampling circuit, the control expansion circuit module is connected to the working status indicator light module, and the control expansion circuit module is also connected to the power indicator light board module; The control interface, control expansion circuit module, key sampling circuit and working status indicator light module are designed on a first circuit board, and the power indicator light board module is designed on an arc-shaped second PCB circuit board.

2. The circuit of an inverter status display solution according to claim 1, characterized in that: The control interface is provided with a wiring terminal CN1, the wiring terminal CN1 is connected to the inverter, the wiring terminal CN1 is provided with 9 interfaces, the interface 1 of the wiring terminal CN1 is connected to the +3.3V power supply and connected in parallel with the capacitor C1, the other end of the capacitor C1 is connected to the GND ground, and the interface 2 of the wiring terminal CN1 is connected to the GND ground; Interfaces 3 to 5 of the wiring terminal CN1 are defined as LED_RCLK, LED_SRCLK and LED_SDI signal interfaces respectively, and the wiring terminal CN1 is connected to the control expansion circuit module via the LED_RCLK, LED_SRCLK and LED_SDI signal interfaces; Interfaces 6 to 9 of the wiring terminal CN1 are defined as KB IN1, KB IN2, KB IN3 and KB IN4 interfaces respectively, and the wiring terminal CN1 is connected to the key sampling circuit via the KB IN1, KB IN2, KB IN3 and KB IN4 interfaces.

3. The circuit of an inverter status display solution according to claim 1, characterized in that: The control expansion circuit module is provided with a chip U1, and the chip U1 is connected to the terminal CN2, the terminal CN3, the terminal CN4 and the terminal CN5, and the terminal CN2, the terminal CN3, the terminal CN4 and the terminal CN5 are all connected to the power indicator light board module.

4. A circuit for displaying the inverter status according to claims 2 and 3, characterized in that: The chip U1 is provided with several interfaces, and the definitions of the several interfaces of the chip U1 are RCLK, —————— SCLK, SCLR, OE, SDI, GND, VDD, QA, QB, QC, QD, QE, QF, QG, QH and SDO interfaces, the GND interface is connected to the GND ground, the SDI interface is connected to the LED SDI interface, the ——RLCK interface is connected to the LED RLCK interface, the SCLK interface is connected to the LED SRCLK interface, the SC—————— The LR interface is connected to the +3.3V power supply, and the SCLR interface is also connected to the capacitor C3. The other end of the capacitor C3 is - It is connected to resistor R4, the other end of which is connected to OE, the VDD interface is connected to the +3.3 power supply, the VDD interface is also connected to capacitor C2, the other end of which is grounded to GND, and the QA, QB and QC interfaces are all connected to the working status indicator light module.

5. The circuit of the inverter status display solution according to claim 4, characterized in that: The wiring terminal CN2, the wiring terminal CN3, the wiring terminal CN4 and the wiring terminal CN5 are each provided with 4 interfaces, the interface 2 of the wiring terminal CN2, the wiring terminal CN3, the wiring terminal CN4 and the wiring terminal CN5 are all defined as LED RED interfaces and connected to the QH interface, the interface 3 of the wiring terminal CN2, the wiring terminal CN3, the wiring terminal CN4 and the wiring terminal CN5 are all connected to the +3.3V power supply, and the interface 4 of the wiring terminal CN2, the wiring terminal CN3, the wiring terminal CN4 and the wiring terminal CN5 are all connected to the GND ground; Interface 1 of the wiring terminal CN2 is defined as an LED ZS interface and is connected to the QD interface, interface 1 of the wiring terminal CN3 is defined as an LED YS interface and is connected to the QF interface, interface 1 of the wiring terminal CN4 is defined as an LED ZX interface and is connected to the QE interface, and interface 1 of the wiring terminal CN5 is defined as an LED YX interface and is connected to the QG interface.

6. The circuit of an inverter status display solution according to claim 1, characterized in that: The working status indicator light module includes a green indicator light circuit, a yellow indicator light circuit and a red indicator light circuit; The green indicator light circuit is composed of a green LED light LED3, resistors R3, R8, R11, a capacitor C6 and a transistor Q3 electrically connected; the yellow indicator light circuit is composed of a yellow LED light LED2, resistors R2, R7, R9, a capacitor C5 and a transistor Q2 electrically connected; the red indicator light circuit is composed of a red LED light LED1, resistors R1, R6, R10, a capacitor C4 and a transistor Q1 electrically connected.

7. The circuit of an inverter status display solution according to claim 1, characterized in that: The power indicator light board module is provided with 4 groups, and the power indicator light board module includes a connection terminal CN6 and a power indicator light board circuit, and the connection terminal CN6 is connected to the connection terminal CN2 or the connection terminal CN3 or the connection terminal CN4 or the connection terminal CN5; The wiring terminal CN6 is provided with four interfaces, interface 1 of the wiring terminal CN6 is defined as an LED BLU interface and is connected to the power indicator light board circuit, and interface 2 of the wiring terminal CN6 is defined as an LED RED and is also connected to the power indicator light board circuit.

8. The circuit of the inverter status display solution according to claim 7, characterized in that: The power indicator board circuit is composed of blue light emitting diodes D1, D3 and D5, red light emitting diodes D2, D4 and D6, resistors R18, R21-R24, capacitors C11-C12, and transistors Q4-Q5 electrically connected.

9. The circuit of an inverter status display solution according to claim 3, characterized in that: The chip U1 is a logic chip, specifically a shift register chip, and its model is a 74HC595 signal chip.

10. The circuit of an inverter status display solution according to claim 1, characterized in that: The second PCB circuit board is in a 1 / 4 arc shape, and 4 groups of the second PCB circuit boards are provided. The 4 groups of the second PCB circuit boards are connected to the first PCB circuit board through cables to form a circular light strip for synchronously displaying the power level.

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