Three-phase inverter automatic calibration platform and intelligent calibration system

Abstract

The utility model discloses a three-phase inverter automation calibration platform and an intelligent calibration system, which are used for connecting an energy storage inverter and an external connection total module and calibrating the energy storage inverter, a first sampling module of the platform is connected with an external connection end relay module, a second sampling module is connected with the external connection end relay module, and the external connection end relay module is connected with the external connection end relay module. The first sampling module is connected with the calibration end relay module, and the second sampling module is connected with the calibration end relay module; the first sampling module, the second sampling module, the external end relay module, the calibration end relay module and the man-machine interaction module are all connected with the control module, and the intelligent button module is connected with the LED display module through the control module and controls the display state of the LED display module. The technical effects of the scheme of the utility model are that the function expansion of the energy storage inverter in a calibration scene is realized, the time required for factory calibration of the energy storage inverter can be remarkably shortened, and the electric shock risk in the calibration process is reduced.

Description

Technical Field

[0001] The utility model relates to the field of photovoltaic energy storage inverters, and in particular to an automatic calibration platform and an intelligent calibration system for a three-phase inverter. Background Art

[0002] Since photovoltaic and wind power themselves cannot always meet the power requirements for grid connection, the photovoltaic plus energy storage industry model has developed rapidly, among which the importance of energy storage inverters is irreplaceable.

[0003] Energy storage inverters need to be strictly calibrated before leaving the factory, but the factory calibration of existing energy storage inverters has two main deficiencies: first, it is impossible to record data during calibration, and it is necessary to record data while calibrating, resulting in low calibration efficiency; second, it is necessary to connect to 380V strong electricity during calibration, and when a calibration failure occurs, the specific location of the failure is unclear, which can easily cause the risk of electric shock. Therefore, the industry needs to develop a calibration device to solve the above problems, on the one hand to shorten the time required for factory calibration of energy storage inverters, and on the other hand to reduce the risk of electric shock during the calibration process. Utility Model Content

[0004] The technical problem to be solved by the utility model is: how to design a calibration device that can shorten the time required for factory calibration of an energy storage inverter and reduce the risk of electric shock during the calibration process.

[0005] In order to solve the above problems, the embodiment of the utility model proposes a three-phase inverter automatic calibration platform and an intelligent calibration system. In the first aspect, the three-phase inverter automatic calibration platform is used to connect the energy storage inverter and the external main module, and calibrate the energy storage inverter. The three-phase inverter automatic calibration platform includes: a first sampling module, a second sampling module, an external terminal relay module, a calibration terminal relay module, a human-computer interaction module, and a control module. The human-computer interaction module includes an LED display module and an intelligent button module; the first sampling module is connected to the external terminal relay module, the second sampling module is connected to the external terminal relay module, the first sampling module is connected to the calibration terminal relay module, and the second sampling module is connected to the calibration terminal relay module; the first sampling module, the second sampling module, the external terminal relay module, the calibration terminal relay module, and the human-computer interaction module are all connected to the control module, and the intelligent button module is connected to the LED display module through the control module, and controls the display state of the LED display module.

[0006] A further technical solution is that the three-phase inverter automatic calibration platform is connected to at least one peripheral PC computer, and the three-phase inverter automatic calibration platform also includes a first communication module, the first communication module is connected to the PC computer, and the PC computer is connected to the energy storage inverter.

[0007] Its further technical solution is that the external main module includes a DC source module, a DC load module, an AC load module, and an AC source module; the DC source module is connected to the first relay of the external end relay module, the DC load module is connected to the second relay of the external end relay module, the AC load module is connected to the third relay of the external end relay module, and the AC source module is connected to the fourth relay of the external end relay module; the first relay and the second relay are both connected to the first sampling module, and the third relay and the fourth relay are both connected to the second sampling module.

[0008] Its further technical solution is that the energy storage inverter includes a GIRD port module, an EPS port module, a BAT port module, a PV port module, and also includes a second communication module, the GIRD port module is connected to the fifth relay of the calibration end relay module, the EPS port module is connected to the sixth relay of the calibration end relay module, the BAT port module is connected to the seventh relay of the calibration end relay module, and the PV port module is connected to the eighth relay of the calibration end relay module; the fifth relay and the sixth relay are both connected to the first sampling module, and the seventh relay and the eighth relay are both connected to the second sampling module; the first communication module is connected to the second communication module, and the second communication module is connected to the PC computer.

[0009] Its further technical solution is that the first communication module includes a first CAN unit, a first RS485 unit, and a second RS485 unit, and the second communication module of the external energy storage inverter includes a second CAN unit, a third RS485 unit, and a fourth RS485 unit; the first RS485 unit of the first communication module is connected to the third RS485 unit of the second communication module, the second RS485 unit of the first communication module is connected to the PC computer, the PC computer is connected to the fourth RS485 unit of the second communication module, the first CAN unit of the first communication module is connected to the second CAN unit of the second communication module, and the first CAN unit of the first communication module is also connected to the AC source module of the external main module.

[0010] A further technical solution is that the LED display module includes a yellow warning light, a green pass light, a red fault light, and a fault warning buzzer connected to the control module, and the status of the red fault light and the fault warning buzzer change synchronously.

[0011] A further technical solution is that the smart button module includes a button wiring unit, a start button unit, an emergency button unit, a first button status display unit, and a second button status display unit; the button wiring unit is connected to the control module, and the start button unit, the emergency button unit, the first button status display unit, and the second button status display unit are all connected to the button wiring unit.

[0012] In a second aspect, an embodiment of the present utility model further proposes an intelligent calibration system, which includes the three-phase inverter automatic calibration platform as described in the first aspect.

[0013] Energy storage inverters need to be strictly calibrated before leaving the factory, but the factory calibration of existing energy storage inverters has two main deficiencies: first, it is impossible to record data during calibration, and it is necessary to record data while calibrating, resulting in low calibration efficiency; second, it is necessary to connect to 380V strong electricity during calibration. When a calibration failure occurs, the specific location of the fault is unclear, which can easily cause the risk of electric shock. This application solves the above problems and realizes the functional expansion of energy storage inverters in calibration scenarios, which can significantly shorten the time required for factory calibration of energy storage inverters and reduce the risk of electric shock during the calibration process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is an overall block diagram of the three-phase inverter automatic calibration platform proposed in the utility model.

[0016] Figure 2 This is another overall block diagram of the three-phase inverter automatic calibration platform proposed in the utility model.

[0017] Figure 3 A control block diagram of the three-phase inverter automatic calibration platform proposed in the utility model.

[0018] Figure 4 A partial block diagram of the three-phase inverter automatic calibration platform proposed in the utility model.

[0019] Figure 5 This is a first communication module diagram of the three-phase inverter automatic calibration platform proposed in the utility model.

[0020] Figure 6 This is a second communication module diagram of the three-phase inverter automatic calibration platform proposed in the utility model.

[0021] Figure 7 This is a diagram of the intelligent button module of the three-phase inverter automatic calibration platform proposed in the utility model.

[0022] Reference numerals

[0023] Three-phase inverter automatic calibration platform 1, energy storage inverter 2, PC computer 3, first sampling module 10, second sampling module 20, external end relay module 30, calibration end relay module 40, human-computer interaction module 50, control module 60, LED display module 51, intelligent button module 52, first communication module 100, second communication module 200, external main module 300, first relay 31, second relay 32, third relay 33, fourth relay 34, fifth relay 45, sixth relay 46, seventh relay 47, eighth relay 48. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments. Similar component numbers in the drawings represent similar components. Obviously, the embodiments to be described below are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0025] It should be understood that the terms used in the utility model embodiment description are only for the purpose of describing specific embodiments and are not intended to limit the utility model embodiment. As used in the utility model embodiment description and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0026] Example

[0027] See also Figure 1-Figure 7, a three-phase inverter automatic calibration platform 1 proposed in an embodiment of the utility model, used to connect the energy storage inverter 2 and the external total module 300, and calibrate the energy storage inverter 2, the three-phase inverter automatic calibration platform 1 includes: a first sampling module 10, a second sampling module 20, an external terminal relay module 30, a calibration terminal relay module 40, a human-computer interaction module 50, and a control module 60, the human-computer interaction module 50 includes an LED display module 51 and an intelligent button module 52; the first sampling module 10 is connected to the external terminal relay module 30, the second The sampling module 20 is connected to the external terminal relay module 30, the first sampling module 10 is connected to the calibration terminal relay module 40, and the second sampling module 20 is connected to the calibration terminal relay module 40; the first sampling module 10, the second sampling module 20, the external terminal relay module 30, the calibration terminal relay module 40, and the human-computer interaction module 50 are all connected to the control module 60, and the smart button module 52 is connected to the LED display module 51 through the control module 60, and controls the display state of the LED display module 51. The calibration platform of the above scheme only needs to be connected to the energy storage machine interface, which can effectively reduce labor costs, and does not require manual calibration data recording. It is convenient to find test calibration data later, and only a load box and input and output sources are required, reducing the cost of test equipment.

[0028] Furthermore, the three-phase inverter automatic calibration platform 1 is connected to at least one peripheral PC computer 3, and the three-phase inverter automatic calibration platform 1 also includes a first communication module 100, the first communication module 100 is connected to the PC computer 3, and the PC computer 3 is connected to the energy storage inverter 2. In one embodiment, the PC computer 3 is connected to the second communication module 200 of the energy storage inverter 2.

[0029] Further, the external total module 300 includes a DC source module AC_Source, a DC load module AC_Load, an AC load module DC_Load, and an AC source module DC_Source. The DC source module AC_Source is connected to the first relay 31 of the external terminal relay module 30, the DC load module AC_Load is connected to the second relay 32 of the external terminal relay module 30, the AC load module DC_Load is connected to the third relay 33 of the external terminal relay module 30, and the AC source module DC_Source is connected to the fourth relay 34 of the external terminal relay module 30; the first relay 31 and the second relay 32 are both connected to the first sampling module, and the third relay 33 and the fourth relay 34 are both connected to the second sampling module. In the above scheme, the external total module 300 is an external module of the system, which is used to assist the operation of the three-phase inverter automatic calibration platform 1.

[0030] Furthermore, the energy storage inverter 2 includes a GIRD port module, an EPS port module, a BAT port module, a PV port module, and also includes a second communication module 200, the GIRD port module is connected to the fifth relay 45 of the calibration end relay module 40, the EPS port module is connected to the sixth relay 46 of the calibration end relay module 40, the BAT port module is connected to the seventh relay 47 of the calibration end relay module 40, and the PV port module is connected to the eighth relay 48 of the calibration end relay module 40; the fifth relay 45 and the sixth relay 46 are both connected to the first sampling module, and the seventh relay 47 and the eighth relay 48 are both connected to the second sampling module; the first communication module 100 is connected to the second communication module 200, and the second communication module 200 is connected to the PC computer 3.

[0031] Furthermore, the first communication module 100 of the three-phase inverter automatic calibration platform 1 includes a first CAN unit, a first RS485 unit, and a second RS485 unit, and the second communication module 200 of the external energy storage inverter 2 includes a second CAN unit, a third RS485 unit, and a fourth RS485 unit; the first RS485 unit of the first communication module 100 is connected to the third RS485 unit of the second communication module 200, the second RS485 unit of the first communication module 100 is connected to the PC computer 3, the PC computer 3 is connected to the fourth RS485 unit of the second communication module 200, the first CAN unit of the first communication module 100 is connected to the second CAN unit of the second communication module 200, and the first CAN unit of the first communication module 100 is also connected to the AC source module DC_Source of the external main module 300.

[0032] Furthermore, the LED display module 51 of the three-phase inverter automatic calibration platform 1 includes a yellow warning light, a green pass light, a red fault light, and a fault reminder buzzer connected to the control module 60, and the state of the red fault light changes synchronously with the state of the fault reminder buzzer. Specifically referring to the accompanying drawings, the yellow warning light, the green pass light, and the red fault light are represented by yellow, green, and red in sequence. In one embodiment, the red fault light and the fault reminder buzzer are connected to each other.

[0033] Furthermore, the smart button module 52 of the three-phase inverter automatic calibration platform 1 includes a button wiring unit, a start button unit, an emergency button unit, a first button status display unit, and a second button status display unit; the button wiring unit is connected to the control module 60, and the start button unit, the emergency button unit, the first button status display unit, and the second button status display unit are all connected to the button wiring unit. The function of the above-mentioned smart button module is to eliminate the need for manual calibration and recording during the entire calibration process, and only the wiring and pressing of the start button are required, and the rest is calibrated by the calibration platform.

[0034] Furthermore, the embodiment of the utility model also proposes an intelligent calibration system, including the three-phase inverter automatic calibration platform 1 as described in any of the above embodiments. Its technical effect is that the intelligent calibration system realizes the functional expansion of the energy storage inverter in the calibration scenario, which can significantly shorten the time required for the factory calibration of the energy storage inverter and reduce the risk of electric shock during the calibration process.

[0035] With the continuous acceleration of the carbon neutrality process and the continuous decline in the cost of photovoltaic power generation, my country's demand for photovoltaic installations is increasing day by day. Due to the changeable natural conditions such as light and wind, the output power is unstable. Photovoltaic and wind power cannot always meet the power requirements of grid connection. The photovoltaic plus energy storage industry model is developing rapidly, and the importance of energy storage inverters is irreplaceable.

[0036] Energy storage inverters need to be strictly calibrated before leaving the factory, but the factory calibration of existing energy storage inverters has two main deficiencies: first, it is impossible to record data during calibration, and it is necessary to record data while calibrating, resulting in low calibration efficiency; second, it is necessary to connect to 380V strong electricity during calibration. When a calibration failure occurs, the specific location of the fault is unclear, which can easily cause the risk of electric shock. This application solves the above problems and realizes the functional expansion of energy storage inverters in calibration scenarios, which can significantly shorten the time required for factory calibration of energy storage inverters and reduce the risk of electric shock during the calibration process.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms should not be understood as necessarily being directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0042] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include these modifications and variations.

[0043] The above is a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A three-phase inverter automatic calibration platform, characterized in that: Used to connect the energy storage inverter and the external main module, and calibrate the energy storage inverter, the three-phase inverter automatic calibration platform includes: A first sampling module, a second sampling module, an external terminal relay module, a calibration terminal relay module, a human-computer interaction module, and a control module, wherein the human-computer interaction module includes an LED display module and an intelligent button module; The first sampling module is connected to the external terminal relay module, the second sampling module is connected to the external terminal relay module, the first sampling module is connected to the calibration terminal relay module, and the second sampling module is connected to the calibration terminal relay module; The first sampling module, the second sampling module, the external end relay module, the calibration end relay module, and the human-computer interaction module are all connected to the control module. The smart button module is connected to the LED display module through the control module and controls the display state of the LED display module.

2. The three-phase inverter automatic calibration platform according to claim 1, characterized in that: The three-phase inverter automatic calibration platform is connected to at least one peripheral PC computer, and the three-phase inverter automatic calibration platform also includes a first communication module, the first communication module is connected to the PC computer, and the PC computer is connected to the energy storage inverter.

3. The three-phase inverter automatic calibration platform according to claim 2, characterized in that: The external main module includes a DC source module, a DC load module, an AC load module, and an AC source module. The DC source module is connected to the first relay of the external end relay module, the DC load module is connected to the second relay of the external end relay module, the AC load module is connected to the third relay of the external end relay module, and the AC source module is connected to the fourth relay of the external end relay module; the first relay and the second relay are both connected to the first sampling module, and the third relay and the fourth relay are both connected to the second sampling module.

4. The three-phase inverter automatic calibration platform according to claim 3, characterized in that: The energy storage inverter includes a GIRD port module, an EPS port module, a BAT port module, a PV port module, and a second communication module. The GIRD port module is connected to the fifth relay of the calibration end relay module, the EPS port module is connected to the sixth relay of the calibration end relay module, the BAT port module is connected to the seventh relay of the calibration end relay module, and the PV port module is connected to the eighth relay of the calibration end relay module; the fifth relay and the sixth relay are both connected to the first sampling module, and the seventh relay and the eighth relay are both connected to the second sampling module; the first communication module is connected to the second communication module, and the second communication module is connected to the PC computer.

5. The three-phase inverter automatic calibration platform according to claim 4, characterized in that: The first communication module includes a first CAN unit, a first RS485 unit, and a second RS485 unit, and the second communication module of the external energy storage inverter includes a second CAN unit, a third RS485 unit, and a fourth RS485 unit; the first RS485 unit of the first communication module is connected to the third RS485 unit of the second communication module, the second RS485 unit of the first communication module is connected to the PC computer, the PC computer is connected to the fourth RS485 unit of the second communication module, the first CAN unit of the first communication module is connected to the second CAN unit of the second communication module, and the first CAN unit of the first communication module is also connected to the AC source module of the external main module.

6. The three-phase inverter automatic calibration platform according to claim 5, characterized in that: The LED display module includes a yellow warning light, a green pass light, a red fault light, and a fault reminder buzzer connected to the control module, and the states of the red fault light and the fault reminder buzzer change synchronously.

7. The three-phase inverter automatic calibration platform according to claim 6, characterized in that: The smart button module includes a button wiring unit, a start button unit, an emergency button unit, a first button status display unit, and a second button status display unit; the button wiring unit is connected to the control module, and the start button unit, the emergency button unit, the first button status display unit, and the second button status display unit are all connected to the button wiring unit.

8. An intelligent calibration system, characterized in that: The intelligent calibration system comprises the three-phase inverter automatic calibration platform as described in any one of claims 1-7.

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