Interface design method of MPPT solar controller

Abstract

The invention discloses an interface design method of an MPPT (maximum power point tracking) solar controller, which comprises the following steps: step 1, dividing segment code screen display areas: setting six numerical value display bits 0-5, a dynamic gear icon 6 and a battery SOC (state of charge) display icon 7, the areas 0-5 respectively correspond to specific electrical parameter display, the dynamic gear icon 6 indicates the running state, and the dynamic gear icon 7 indicates the running state; a No.7 battery SOC display icon displays the state of charge of the battery; 2, key functions are defined, wherein an add key 9, a shift key 10 and a confirmation / on-off key 8 are set; the method has the beneficial effects that a user can quickly position key information such as photovoltaic voltage, a battery state and load parameters through the numerical value display positions of the fixed partitions; the battery SOC is visually displayed in the form of grids, the precision is high, and a user can conveniently master the battery remaining capacity; the dynamic gear icon feeds back the running state of the equipment in real time by simulating the rotating effect; the flicker prompt in the mode is set, and the current operation object is clearly distinguished.

Description

Technical Field

[0001] This invention belongs to the field of controller interface design technology, specifically relating to an interface design method for an MPPT solar controller. Background Technology

[0002] The MPPT controller is a key component of a solar power system. Its main purpose is to ensure that the photovoltaic system always operates near its optimal power point, thereby maximizing the power output of the solar panels. Under variable light and temperature conditions, the MPPT controller maintains the maximum system output power by dynamically adjusting the load. The MPPT controller calculates the current power output by detecting the operating voltage and current of the photovoltaic array in real time and compares it with previously stored data to determine if there is a higher power point. Once a new maximum power point is detected, the MPPT controller adjusts its control parameters to move the operating point of the photovoltaic array to this optimal point.

[0003] MPPT controllers play a crucial role in improving solar energy conversion efficiency. They can be used in solar systems of all sizes, from small home solar chargers to large solar power plants. By intelligently tracking the maximum power point, MPPT controllers can significantly improve the overall energy harvesting efficiency and cost-effectiveness of the system.

[0004] The MPPT solar controller is a core device in a photovoltaic system, responsible for optimizing the energy output of photovoltaic modules and managing the charging and discharging of batteries; its interface design directly affects the user's perception of the device's operating status and the ease of parameter setting.

[0005] In the existing technology, some MPPT controllers have problems such as cluttered display information, unintuitive status indicators, and cumbersome setup processes. For example, the display positions of key parameters such as photovoltaic voltage, battery power, and charging / discharging current are not fixed, requiring users to repeatedly identify them; the switching logic between operating status and setting mode is complex, which can easily lead to misoperation; and the display accuracy of battery state of charge is insufficient, making it difficult to accurately reflect the remaining battery power. Summary of the Invention

[0006] The purpose of this invention is to provide an interface design method for an MPPT solar controller, which solves the problems of display confusion, operation complexity, and unclear status indication in existing MPPT solar controller interfaces. It provides an interface design method with reasonable layout, clear functional division, and simple operation logic, so as to realize intuitive display of key parameters, dynamic indication of equipment status, and convenient operation of parameter settings.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an interface design method for an MPPT solar controller, comprising the following steps:

[0008] Step 1: Divide the segment code screen display area: Set 6 numerical display positions 0-5, 1 dynamic gear icon 6, and 1 battery SOC display icon 7. Among them, the 0-5 areas correspond to specific electrical parameters, the dynamic gear icon 6 indicates the operating status, and the battery SOC display icon 7 shows the battery charge status.

[0009] Step 2: Define button functions: Set the plus button 9, the shift button 10, and the confirmation / on button 8. The plus button 9 and the shift button 10 are used for parameter adjustment, and the confirmation / on button 8 is used for mode switching and operation confirmation.

[0010] Step 3: Configure the working mode display rules: In the running state, the No. 6 dynamic gear icon dynamically displays simulated rotation using interval segment codes; areas 0-5 respectively display PV voltage, power generation, battery voltage, battery current, load voltage, and load current; the No. 7 battery SOC display icon indicates SOC by lighting up / turning off a single segment, with each segment corresponding to 20% SOC;

[0011] Step 4: Entering and operating the settings mode: Press and hold the plus button 9 and the shift button 10 for 3 seconds. The dynamic gear icon 6 will flash, indicating that you have entered the settings mode. In the settings mode, the set position will flash. Use the shift button 10 to switch the set position, the plus button 9 to adjust the value, and the confirmation / power button 8 to complete the current setting or exit the settings mode.

[0012] As a preferred technical solution of the present invention, in step one, the specific allocation of the numerical display bits 0-5 is as follows: bit 0 displays PV voltage, bit 1 displays power generation, bit 2 displays battery voltage, bit 3 displays battery current, bit 4 displays load voltage, and bit 5 displays load current.

[0013] As a preferred technical solution of the present invention, in step three, the dynamic display method of the No. 6 dynamic gear icon is as follows: the segment code is used with an interval of one tooth, and the two segment codes are displayed alternately to simulate the gear rotation effect.

[0014] As a preferred technical solution of the present invention, in step three, the SOC display icon of the No. 7 battery has the following SOC display rules: it contains multiple independently controllable single cells, the lighting state of a single cell corresponds to the SOC range, each cell represents 20% SOC, and the SOC from 0 to 100% is displayed by the combination of lighting / turning off a single cell.

[0015] As a preferred technical solution of the present invention, in step four, the parameter configuration in the setting mode includes battery type selection: area 0 displays "Set", area 1 displays numbers 0-5, where 0 represents not working, 1 represents lead-acid battery, 2 represents gel battery, 3 represents phosphoric acid battery, 4 represents ternary lithium battery, and 5 represents user-defined.

[0016] As a preferred technical solution of the present invention, in step four, the parameter configuration in the setting mode further includes: area 2 is used to set the target charging voltage of the battery, area 3 is used to set the charging current, area 4 is used to set the load voltage, and area 5 is used to set the maximum load current.

[0017] As a preferred technical solution of the present invention, the operation logic of the setting mode in step four includes: pressing the shift key 10 once moves the setting bit from the high bit to the low bit by one bit; pressing the plus key 9 once increments the value of the current setting bit by 1, and after the value reaches the maximum value, it jumps to 0 and cycles.

[0018] As a preferred technical solution of the present invention, in step four, the exit method of setting mode is as follows: press and hold the confirmation / power button 8 for 3 seconds, the controller exits the setting mode and switches to the working display interface, and the confirmation / power button 8 is restored to the switch function.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] With fixed-zone numerical display, users can quickly locate key information such as photovoltaic voltage, battery status, and load parameters; the battery SOC is displayed intuitively with the number of bars, which is highly accurate and makes it easy for users to know the remaining battery power.

[0021] The dynamic gear icon simulates rotation and provides real-time feedback on the device's operating status; the flashing prompts in settings mode clearly distinguish the currently operated object.

[0022] All parameter settings can be completed with just 3 buttons, making it simple and easy to understand and reducing the probability of accidental operation. Attached Figure Description

[0023] Figure 1 This is a hardware design diagram of the operation display interface of the present invention;

[0024] Figure 2 For the present invention Figure 1 The content displayed on the segment code screen inside;

[0025] Figure 3 This is a diagram showing the content displayed by the MPPT of the present invention during normal operation;

[0026] Figure 4 A diagram showing the location of the screen, buttons, and interfaces for MPPT charging according to the present invention;

[0027] Figure 5 An explanatory diagram illustrating the operational setup of the present invention. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figures 1-5 This invention provides an interface design method for an MPPT solar controller, comprising the following steps:

[0030] Step 1: Divide the segment code screen display area: Set 6 numerical display positions 0-5, 1 dynamic gear icon 6, and 1 battery SOC display icon 7. Among them, the 0-5 areas correspond to specific electrical parameters, the dynamic gear icon 6 indicates the operating status, and the battery SOC display icon 7 shows the battery charge status.

[0031] Step 2: Define button functions: Set the plus button 9, the shift button 10, and the confirmation / on button 8. The plus button 9 and the shift button 10 are used for parameter adjustment, and the confirmation / on button 8 is used for mode switching and operation confirmation.

[0032] Step 3: Configure the working mode display rules: In the running state, the No. 6 dynamic gear icon dynamically displays simulated rotation using interval segment codes; areas 0-5 respectively display PV voltage, power generation, battery voltage, battery current, load voltage, and load current; the No. 7 battery SOC display icon indicates SOC by lighting up / turning off a single segment, with each segment corresponding to 20% SOC;

[0033] Step 4: Entering and operating the settings mode: Press and hold the plus button 9 and the shift button 10 for 3 seconds. The dynamic gear icon 6 will flash, indicating that you have entered the settings mode. In the settings mode, the set position will flash. Use the shift button 10 to switch the set position, the plus button 9 to adjust the value, and the confirmation / power button 8 to complete the current setting or exit the settings mode.

[0034] like Figure 1 The hardware design diagram of the operation display interface shown in this invention includes an MCU (microcontroller unit), an HT1621 (LCD driver), a segment display screen (display interface), three function buttons (add button, shift button, and confirm / on button), and an LED backlight module. The MCU communicates with the HT1621 through the CS (chip select), WR (synchronous clock), and DATA (data) interfaces to control the display content of the segment display screen. The button signals are transmitted to the MCU through the COM (common output port) to realize the operation response. The Lamp (backlight control) interface is used to control the switching on and off of the LED backlight.

[0035] like Figure 2 , Figure 3 As shown, the segment code screen uses a 3x2 layout for displaying numerical values, with the 0-5 numerical display positions corresponding to:

[0036] 0 (top left): PV voltage (e.g., 25.0V)

[0037] Number 1 (top right): Total power generation (e.g., 0.5 kWh)

[0038] Number 2 (left side of the middle): Battery voltage (e.g., 12.0V)

[0039] Number 3 (Bank of China, right): Battery charging current (e.g., 10.5A)

[0040] Number 4 (downward left): Load voltage (e.g., 12.0V)

[0041] Number 5 (downward right): Load current (e.g., 40.0A);

[0042] like Figure 5 As shown, the gear icon (number 6) is located in the center of the screen, and the battery icon (number 7) is located on the right side of the screen, which are linked to the numerical display to show the device status.

[0043] Example of working mode

[0044] When the equipment is running normally ( Figure 3 ):

[0045] The No. 6 dynamic gear icon rotates in a manner that alternates between two segments with a 1-tooth gap, indicating that the device is in working condition;

[0046] Display 0 shows the photovoltaic module output voltage of 25.0V, display 1 shows the total power generation of 0.5kWh, display 2 shows the battery voltage of 12.0V, display 3 shows the battery charging current of 10.5A, display 4 shows the load voltage of 12.0V, and display 5 shows the load current of 40.0A.

[0047] The SOC indicator for the No. 7 battery is lit up with 3 bars, indicating that the SOC is 60%.

[0048] Example of setting mode operation

[0049] To enter settings: Press and hold the plus button (9) and the shift button (10) for 3 seconds. The dynamic gear icon (6) will flash, indicating that you have entered settings mode.

[0050] Select battery type: 0 displays "Set", 1 displays the number "1" (default lead-acid battery); press the plus button 9 twice, the number of 1 will change to "3" (switch to phosphoric acid battery); press the confirm / power button 8 to complete the battery type setting, and automatically enter the battery target charging voltage setting.

[0051] Setting the charging voltage: Digit #2 flashes (current setting digit), displaying the default value of 12.0V; Press the shift key #10, the first decimal place flashes; Press the plus key #9 5 times to adjust the value to 12.5V; Press the confirmation / power key #8 to complete the charging voltage setting and enter the charging current setting.

[0052] Exit Settings: Press and hold Confirm / Power button #8 for 3 seconds until the dynamic gear icon #6 stops flashing, returning to the working interface and displaying the updated parameters.

[0053] Although embodiments of the invention have been shown and described in detail above, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An interface design method for an MPPT solar controller, characterized in that: Includes the following steps: Step 1: Divide the segment code screen display area: Set 6 numerical display positions 0-5, 1 dynamic gear icon 6, and 1 battery SOC display icon 7. Among them, the 0-5 areas correspond to specific electrical parameters, the dynamic gear icon 6 indicates the operating status, and the battery SOC display icon 7 shows the battery charge status. Step 2: Define button functions: Set the plus button 9, the shift button 10, and the confirmation / on button 8. The plus button 9 and the shift button 10 are used for parameter adjustment, and the confirmation / on button 8 is used for mode switching and operation confirmation. Step 3: Configure the working mode display rules: In the running state, the No. 6 dynamic gear icon dynamically displays simulated rotation using interval segment codes; areas 0-5 respectively display PV voltage, power generation, battery voltage, battery current, load voltage, and load current; the No. 7 battery SOC display icon indicates SOC by lighting up / turning off a single segment, with each segment corresponding to 20% SOC; Step 4: Entering and operating the settings mode: Press and hold the plus button 9 and the shift button 10 for 3 seconds. The dynamic gear icon 6 will flash, indicating that you have entered the settings mode. In the settings mode, the set position will flash. Use the shift button 10 to switch the set position, the plus button 9 to adjust the value, and the confirmation / power button 8 to complete the current setting or exit the settings mode.

2. The interface design method for an MPPT solar controller according to claim 1, characterized in that: In step one, the specific allocation of the numerical display bits 0-5 is as follows: bit 0 displays PV voltage, bit 1 displays power generation, bit 2 displays battery voltage, bit 3 displays battery current, bit 4 displays load voltage, and bit 5 displays load current.

3. The interface design method for an MPPT solar controller according to claim 1, characterized in that: In step three, the dynamic display method of the No. 6 dynamic gear icon is as follows: each segment code is used as a interval of one tooth, and two segments code are displayed alternately to simulate the effect of gear rotation.

4. The interface design method for an MPPT solar controller according to claim 1, characterized in that: In step three, the SOC display icon for battery 7 has the following rules: it contains multiple independently controllable cells, and the lighting status of a cell corresponds to a SOC range. Each cell represents 20% SOC, and the SOC range from 0% to 100% is displayed by the combination of lighting / turning off a cell.

5. The interface design method for an MPPT solar controller according to claim 1, characterized in that: In step four, the parameter configuration in the setting mode includes battery type selection: area 0 displays "Set", area 1 displays numbers 0-5, where 0 represents not working, 1 represents lead-acid battery, 2 represents gel battery, 3 represents phosphoric acid battery, 4 represents ternary lithium battery, and 5 represents user-defined.

6. The interface design method for an MPPT solar controller according to claim 5, characterized in that: In step four, the parameter configuration in the setting mode also includes: area 2 is used to set the target charging voltage of the battery, area 3 is used to set the charging current, area 4 is used to set the load voltage, and area 5 is used to set the maximum load current.

7. The interface design method for an MPPT solar controller according to claim 1, characterized in that: In step four, the operation logic of the setting mode includes: pressing the shift key 10 once moves the setting bit from the high bit to the low bit by one position; pressing the plus key 9 once increments the value of the current setting bit by 1, and after the value reaches the maximum value, it jumps to 0 and loops.

8. The interface design method for an MPPT solar controller according to claim 1, characterized in that: In step four, the exit method for setting mode is as follows: press and hold the confirmation / power button 8 for 3 seconds. The controller will exit the setting mode and switch to the working display interface. The confirmation / power button 8 will then return to its on / off function.

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