Household energy storage system WIFI control panel

Abstract

The invention discloses a WIFI control panel of a household energy storage system. The WIFI control panel comprises a power supply circuit module, a WIFI module, an RS485 circuit module, an LCD circuit module and an LAN circuit module. The RS485 circuit module is in communication connection with the WIFI module, the WIFI module is connected with a path of EMS interface and a path of inverter interface through the RS485 circuit module, the WIFI module obtains data of BMS equipment and inverter equipment through the RS485 circuit module, the WIFI module uploads the obtained data to a cloud end, and the cloud end is connected with the BMS equipment and the inverter equipment. When the BMS device feeds back a protection fault signal or the inverter feeds back a fault signal, the WIFI module uploads the corresponding fault signal to the cloud; according to the invention, not only can the program be upgraded, but also the sub-equipment can be upgraded, so that subsequent function optimization and upgrading are facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field related to household energy storage systems, and in particular to a WIFI control board for a household energy storage system. Background Art

[0002] With the development of new energy technologies such as photovoltaics and wind power, the deployment of photovoltaic cells, wind turbines and other power generation devices in home scenarios to supply power and store energy for home loads after power generation has become an increasingly important research field. A home energy storage system is a system that includes these power generation devices and energy storage converters. The basic function of a home energy storage converter is to process the energy changes of the current generated by the power generation device to supply power to home loads and manage the power of the energy storage battery. The home energy storage converter will also be connected to the power grid so that when the power generation device generates sufficient power, the excess power can be connected to the grid to bring additional benefits.

[0003] The WiFi control panel is an important part of modern home energy management. It is designed to realize intelligent monitoring and control of energy storage systems through wireless networks. The control panel not only improves the user experience, but also optimizes the efficiency of home energy use.

[0004] Existing WIFI control panels cannot perform firmware upgrades on connected sub-devices, which may result in sub-devices not being able to obtain the latest features or security patches, affecting the performance and security of the entire system. Some control panels have limited functions and cannot meet the diverse needs of users, for example, they lack functions such as intelligent scheduling. Summary of the invention

[0005] In order to solve the problem in the prior art that the WIFI control panel cannot perform firmware upgrades on the connected sub-devices, which may result in the sub-devices being unable to obtain the latest functions or security patches, affecting the performance and security of the entire system. Some control panels have limited functions and cannot meet the diverse needs of users, for example, lack functions such as intelligent scheduling. The present invention provides a WIFI control panel for a household energy storage system.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: The present invention discloses a household energy storage system WIFI control board, comprising a power circuit module, a WIFI module, an RS485 circuit module, an LCD circuit module and a LAN circuit module; The power circuit module is used to supply power to the WIFI module, the RS485 circuit module, the LCD circuit module and the LAN circuit module, and the RS485 circuit module is communicatively connected to the WIFI module. The WIFI module is connected to an EMS interface and an inverter interface via the RS485 circuit module. The EMS interface is communicatively connected to the BMS device, and the inverter interface is communicatively connected to the inverter device. The WIFI module obtains data of the BMS device and the inverter device via the RS485 circuit module, and the WIFI module uploads the obtained data to the cloud. When the BMS device feeds back a protection fault signal or the inverter feeds back a fault signal, the WIFI module uploads the corresponding fault signal to the cloud. The WIFI module is connected to a LAN port interface via a LAN circuit module; The power circuit module includes buck chips U2 and U4, voltage regulator tube D5 and power inductor L1; The VIN pin of the buck chip U2 is connected to one end of the resistor R29, the other end of the resistor R29 is connected to the cathode of the diode D7, the anode of the diode D7 is connected to the input voltage, the VIN pin of the buck chip U2 is also connected to the anode of the voltage regulator tube D5, one end of the capacitor C14, one end of the capacitor C15 and one end of the resistor R30, the cathode of the voltage regulator tube D5, the other end of the capacitor C14 and the other end of the capacitor C15 are grounded, and the other end of the resistor R30 is connected to the EN pin of the buck chip U2; Pin 4 of the power inductor L1 is connected to the SW pin of the buck chip U2, pin 2 of the power inductor L1 is connected to the positive electrode of the diode D4, and the negative electrode of the diode D4 is connected to the 485_5V output terminal; pin 1 of the power inductor L1 is connected to the 5V output voltage terminal, pin 3 of the power inductor L1 is connected to the casing via the casing connection line, and capacitors C6, C7, C8 and C74 are connected in parallel between the negative electrode of the diode D4 and the casing connection line; multiple grounding capacitors C10, C11, C12, C13 and C73 are connected to pin 1 of the power inductor L1; The IN pin of the buck chip U4 is connected to the 5V output voltage terminal, and the OUT pin of the buck chip U4 is connected to a 3.3V output voltage for powering the WIFI module, the RS485 circuit module and the LCD circuit module.

[0007] As a preferred technical solution of the present invention, the PGOOD pin of the buck chip U2 is connected to one end of the resistor R401, and the other end of the resistor R401 is connected to pin 1 of the power inductor L1; the BST pin of the buck chip U2 is connected to one end of the capacitor C9, and one end of the capacitor C9 is connected to pin 4 of the power inductor L1.

[0008] As a preferred technical solution of the present invention, the PGOOD pin of the buck chip U2 is connected to one end of the capacitor C17, the other end of the capacitor C17 is grounded and connected to the positive electrode of the voltage regulator D6, and the negative electrode of the voltage regulator D6 is connected to the 4-pin of the power inductor L1.

[0009] As a preferred technical solution of the present invention, the FB pin of the buck chip U2 is connected to one end of the resistor R31, the other end of the resistor R31 is connected to one end of the resistor R34, one end of the resistor R27 and one end of the capacitor C16, the other end of the resistor R27 is connected to pin 1 of the power inductor L1, and the other end of the capacitor C16 is connected to pin 1 of the power inductor L1, so the other end of the resistor R34 is grounded.

[0010] As a preferred technical solution of the present invention, the RON pin of the buck chip U2 is connected to one end of the resistor R32 and one end of the resistor R33, while the other end of the resistor R33 is grounded, and the other end of the resistor R32 is connected to a 7V voltage.

[0011] As a preferred technical solution of the present invention, the output end of the buck chip U4 is provided with grounding capacitors C22 and C23, and the output end of the buck chip U4 is provided with grounding capacitors C24 and C25.

[0012] As a preferred technical solution of the present invention, the buck chip U2 adopts a buck chip of model JW9563P.

[0013] As a preferred technical solution of the present invention, the WIFI module adopts the ESP32 WIFI chip.

[0014] As a preferred technical solution of the present invention, the LCD circuit module includes a COMS tube Q42, a diode D15 and a terminal J1, the anode of the diode D15 is connected to the TP_IO pin of the WIFI module, and is also connected to one end of the resistor R118, and the other end of the resistor R118 is connected to a 3.3V voltage, the cathode of the diode D15 is connected to the S pole of the COMS tube Q42, the D pole of the COMS tube Q42 is grounded, the G pole of the COMS tube Q42 is connected to the 7-pin of the terminal J1, and the terminal J1 is connected to an external LCD screen.

[0015] The beneficial effects of the present invention are: 1. This kind of household energy storage system WIFI control board obtains all the data of BMS and inverter based on 485 communication, and can transmit it to the cloud through the WIFI module to realize data transparent transmission and back-end sharing, and some data are displayed on the display screen. Once the BMS feedbacks a protection fault signal or the inverter feedbacks a fault signal, WIFI will immediately notify the cloud; the WIFI control board in the present invention can not only upgrade its own program, but also upgrade the sub-devices, which is convenient for subsequent function optimization and upgrade; the WIFI control board in the present invention supports AP communication, and even in the case of network, the installer can set parameters through the App; the WIFI control board in the present invention is universal, and the WIFI control board can be applied to different energy storage systems as long as different software parameters are set.

[0016] 2. This kind of household energy storage system WIFI control board is equipped with a specific power circuit module, wherein the power circuit module is composed of step-down chips U2 and U4, voltage regulator tubes D5 and D6, and power inductor L1, which generates a stable voltage to power each module device, and has the advantages of stable voltage and small fluctuation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a structural schematic diagram of a WIFI control board of a household energy storage system of the present invention; Figure 2 It is a circuit diagram of a buck chip U2 of a power circuit module of a WIFI control board of a household energy storage system of the present invention; Figure 3 It is a circuit diagram of a buck chip U4 of a power circuit module of a WIFI control board of a household energy storage system of the present invention; Figure 4 It is a circuit diagram of an LCD circuit module of a WIFI control board of a household energy storage system of the present invention; Figure 5 The present invention is a circuit diagram of a WIFI module of a WIFI control board of a household energy storage system.

[0018] In the figure: 1. Power circuit module; 2. WIFI module; 3. RS485 circuit module; 4. LCD circuit module; 5. LAN circuit module; 6. EMS interface; 7. Inverter interface; 8. LAN port interface. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0020] Example: Figures 1 to 5 As shown, a WIFI control board for a household energy storage system of the present invention includes a power circuit module 1, a WIFI module 2, an RS485 circuit module 3, an LCD circuit module 4 and a LAN circuit module 5; The power circuit module 1 is used to supply power to the WIFI module 2, the RS485 circuit module 3, the LCD circuit module 4 and the LAN circuit module 5, and the RS485 circuit module 3 is communicatively connected with the WIFI module 2. The WIFI module 2 is connected to an EMS interface 6 and an inverter interface 7 via the RS485 circuit module 3. The EMS interface 6 is communicatively connected with the BMS device, and the inverter interface 7 is communicatively connected with the inverter device. The WIFI module 2 obtains data of the BMS device and the inverter device via the RS485 circuit module 3, and the WIFI module 2 uploads the obtained data to the cloud. When the BMS device feeds back a protection fault signal or the inverter feeds back a fault signal, the WIFI module 2 uploads the corresponding fault signal to the cloud. All the data of BMS and inverter are acquired based on 485 communication, and can be transmitted to the cloud through the WIFI module to realize transparent transmission of data and back-end sharing, and some data are displayed on the display screen. Once the BMS feedbacks a protection fault signal or the inverter feedbacks a fault signal, WIFI will immediately notify the cloud; the WIFI control board in the present invention can not only upgrade its own program, but also upgrade the sub-devices, which is convenient for subsequent function optimization and upgrade; the WIFI control board in the present invention supports AP communication, and even in the case of network, the installer can set parameters through the App; the WIFI control board in the present invention is universal, and the WIFI control board can be applied to different energy storage systems as long as different software parameters are set.

[0021] The WIFI module 2 is connected to a LAN port interface 8 via a LAN circuit module 5; thus, the device can be connected to a router via a standard network cable to access the Internet.

[0022] The power circuit module 1 includes step-down chips U2 and U4, a voltage regulator tube D5 and a power inductor L1; The VIN pin of the buck chip U2 is connected to one end of the resistor R29, the other end of the resistor R29 is connected to the cathode of the diode D7, the anode of the diode D7 is connected to the input voltage, the VIN pin of the buck chip U2 is also connected to the anode of the voltage regulator tube D5, one end of the capacitor C14, one end of the capacitor C15 and one end of the resistor R30, the cathode of the voltage regulator tube D5, the other end of the capacitor C14 and the other end of the capacitor C15 are grounded, and the other end of the resistor R30 is connected to the EN pin of the buck chip U2; Pin 4 of the power inductor L1 is connected to the SW pin of the buck chip U2, pin 2 of the power inductor L1 is connected to the positive electrode of the diode D4, and the negative electrode of the diode D4 is connected to the 485_5V output terminal; pin 1 of the power inductor L1 is connected to the 5V output voltage terminal, pin 3 of the power inductor L1 is connected to the casing via the casing connection line, and capacitors C6, C7, C8 and C74 are connected in parallel between the negative electrode of the diode D4 and the casing connection line; multiple grounding capacitors C10, C11, C12, C13 and C73 are connected to pin 1 of the power inductor L1; The IN pin of the step-down chip U4 is connected to the 5V output voltage terminal, and the OUT pin of the step-down chip U4 outputs a 3.3V output voltage for powering the WIFI module 2, the RS485 circuit module 3, and the LCD circuit module 4. By setting a specific power supply circuit module, each module device is powered, and has the advantages of stable voltage and small fluctuation.

[0023] Among them, the PGOOD pin of the buck chip U2 is connected to one end of the resistor R401, and the other end of the resistor R401 is connected to the 1 pin of the power inductor L1; the BST pin of the buck chip U2 is connected to one end of the capacitor C9, and one end of the capacitor C9 is connected to the 4 pin of the power inductor L1.

[0024] The PGOOD pin of the buck chip U2 is connected to one end of the capacitor C17, the other end of the capacitor C17 is grounded and connected to the positive electrode of the voltage regulator D6, and the negative electrode of the voltage regulator D6 is connected to the 4th pin of the power inductor L1.

[0025] Among them, the FB pin of the buck chip U2 is connected to one end of the resistor R31, the other end of the resistor R31 is connected to one end of the resistor R34, one end of the resistor R27 and one end of the capacitor C16, the other end of the resistor R27 is connected to pin 1 of the power inductor L1, and the other end of the capacitor C16 is connected to pin 1 of the power inductor L1, so the other end of the resistor R34 is grounded.

[0026] Among them, the RON pin of the buck chip U2 is connected to one end of the resistor R32 and one end of the resistor R33, while the other end of the resistor R33 is grounded, and the other end of the resistor R32 is connected to a 7V voltage. The output end of the buck chip U4 is provided with grounding capacitors C22 and C23, and the output end of the buck chip U4 is provided with grounding capacitors C24 and C25. The buck chip U2 adopts a buck chip of the JW9563P model. The WIFI module 2 adopts the ESP32 WIFI chip. The LCD circuit module 4 includes a COMS tube Q42, a diode D15 and a terminal J1. The anode of the diode D15 is connected to the TP_IO pin of the WIFI module 2 and to one end of the resistor R118. The other end of the resistor R118 is connected to a 3.3V voltage. The cathode of the diode D15 is connected to the S pole of the COMS tube Q42. The D pole of the COMS tube Q42 is grounded. The G pole of the COMS tube Q42 is connected to the 7-pin of the terminal J1. The terminal J1 is connected to an external LCD screen.

[0027] When working, this kind of household energy storage system WIFI control board obtains all the data of BMS and inverter based on 485 communication, and can transmit it to the cloud through the WIFI module, realizing data transparent transmission and back-end sharing, and some data is displayed on the display screen. Once the BMS feedbacks a protection fault signal or the inverter feedbacks a fault signal, WIFI will immediately notify the cloud; the WIFI control board in the present invention can not only upgrade its own program, but also upgrade the sub-devices, which is convenient for subsequent function optimization and upgrade; the WIFI control board in the present invention supports AP communication, and even in the case of network, the installer can set parameters through the App; the WIFI control board in the present invention is universal, and the WIFI control board can be applied to different energy storage systems as long as different software parameters are set.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A WIFI control panel for a household energy storage system, characterized in that: It comprises a power circuit module (1), a WIFI module (2), an RS485 circuit module (3), an LCD circuit module (4) and a LAN circuit module (5); The power circuit module (1) is used to supply power to the WIFI module (2), the RS485 circuit module (3), the LCD circuit module (4) and the LAN circuit module (5), and the RS485 circuit module (3) is communicatively connected to the WIFI module (2); the WIFI module (2) is connected to an EMS interface (6) and an inverter interface (7) via the RS485 circuit module (3); the EMS interface (6) is communicatively connected to the BMS device; the inverter interface (7) is communicatively connected to the inverter device; the WIFI module (2) obtains data from the BMS device and the inverter device via the RS485 circuit module (3); the WIFI module (2) uploads the obtained data to the cloud; and when the BMS device feeds back a protection fault signal or the inverter feeds back a fault signal, the WIFI module (2) uploads the corresponding fault signal to the cloud; The WIFI module (2) is connected to a LAN port interface (8) via a LAN circuit module (5); The power circuit module (1) comprises step-down chips U2 and U4, a voltage regulator tube D5 and a power inductor L1; The VIN pin of the buck chip U2 is connected to one end of the resistor R29, the other end of the resistor R29 is connected to the cathode of the diode D7, the anode of the diode D7 is connected to the input voltage, the VIN pin of the buck chip U2 is also connected to the anode of the voltage regulator tube D5, one end of the capacitor C14, one end of the capacitor C15 and one end of the resistor R30, the cathode of the voltage regulator tube D5, the other end of the capacitor C14 and the other end of the capacitor C15 are grounded, and the other end of the resistor R30 is connected to the EN pin of the buck chip U2; Pin 4 of the power inductor L1 is connected to the SW pin of the buck chip U2, pin 2 of the power inductor L1 is connected to the positive electrode of the diode D4, and the negative electrode of the diode D4 is connected to the 485_5V output terminal; pin 1 of the power inductor L1 is connected to the 5V output voltage terminal, pin 3 of the power inductor L1 is connected to the casing via the casing connection line, and capacitors C6, C7, C8 and C74 are connected in parallel between the negative electrode of the diode D4 and the casing connection line; multiple grounding capacitors C10, C11, C12, C13 and C73 are connected to pin 1 of the power inductor L1; The IN pin of the step-down chip U4 is connected to the 5V output voltage terminal, and the OUT pin of the step-down chip U4 outputs a 3.3V output voltage for supplying power to the WIFI module (2), the RS485 circuit module (3) and the LCD circuit module (4).

2. A household energy storage system WIFI control board according to claim 1, characterized in that: The PGOOD pin of the buck chip U2 is connected to one end of the resistor R401, and the other end of the resistor R401 is connected to the 1 pin of the power inductor L1; the BST pin of the buck chip U2 is connected to one end of the capacitor C9, and one end of the capacitor C9 is connected to the 4 pin of the power inductor L1.

3. A household energy storage system WIFI control board according to claim 2, characterized in that: The PGOOD pin of the buck chip U2 is connected to one end of the capacitor C17, the other end of the capacitor C17 is grounded and connected to the positive electrode of the voltage regulator D6, and the negative electrode of the voltage regulator D6 is connected to the 4th pin of the power inductor L1.

4. A household energy storage system WIFI control board according to claim 2, characterized in that: The FB pin of the buck chip U2 is connected to one end of the resistor R31, the other end of the resistor R31 is connected to one end of the resistor R34, one end of the resistor R27 and one end of the capacitor C16, the other end of the resistor R27 is connected to pin 1 of the power inductor L1, and the other end of the capacitor C16 is connected to pin 1 of the power inductor L1, so the other end of the resistor R34 is grounded.

5. A household energy storage system WIFI control board according to claim 1, characterized in that: The RON pin of the step-down chip U2 is connected to one end of the resistor R32 and one end of the resistor R33, while the other end of the resistor R33 is grounded, and the other end of the resistor R32 is connected to a 7V voltage.

6. A household energy storage system WIFI control board according to claim 1, characterized in that: The output end of the buck chip U4 is provided with grounding capacitors C22 and C23, and the output end of the buck chip U4 is provided with grounding capacitors C24 and C25.

7. A household energy storage system WIFI control board according to any one of claims 1 to 6, characterized in that: The buck chip U2 is a JW9563P buck chip.

8. A household energy storage system WIFI control board according to claim 1, characterized in that: The WIFI module (2) uses an ESP32 WIFI chip.

9. A household energy storage system WIFI control board according to claim 1, characterized in that: The LCD circuit module (4) comprises a CMOS tube Q42, a diode D15 and a terminal J1, wherein the anode of the diode D15 is connected to the TP_IO pin of the WIFI module (2) and is also connected to one end of a resistor R118, and the other end of the resistor R118 is connected to a 3.3V voltage, the cathode of the diode D15 is connected to the S pole of the CMOS tube Q42, the D pole of the CMOS tube Q42 is grounded, the G pole of the CMOS tube Q42 is connected to the 7th pin of the terminal J1, and the terminal J1 is connected to an external LCD screen.

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