Intelligent photovoltaic energy storage energy efficiency multiplication household system

Abstract

The invention belongs to the technical field of energy storage management, and particularly relates to an intelligent photovoltaic energy storage energy efficiency multiplication household system. The invention provides a circuit hardware basic part of an intelligent photovoltaic energy storage energy efficiency multiplication household system. The system comprises a solar cell module, a module collector, a data collector, an environment detector, a local monitoring terminal, a combiner box, an inverter, a metering box, a scheduling energy storage controller, a multiplication charging and discharging controller, a storage battery pack, a DC / AC conversion part and a dual-power automatic change-over switch. The system is characterized in that an electric energy output port of the solar cell module is respectively connected with an input port of the module collector and an input port of the combiner box, and an output port of the combiner box is connected with a power grid through the inverter and the metering box in sequence.

Description

Technical Field

[0001] The present invention belongs to the technical field of energy storage management, and in particular relates to an intelligent photovoltaic energy storage system for household use with doubled energy efficiency. Background Art

[0002] Photovoltaic power generation is based on the principle of photovoltaic effect, using the characteristics of solar cells to directly convert sunlight energy into electrical energy. Different from large-scale photovoltaic power stations, household photovoltaic power generation systems refer to devices that place photovoltaic panels on the top floor of a family house or in the courtyard, and then convert the generated direct current into alternating current through the inversion process.

[0003] At present, household photovoltaic power generation systems are divided into energy storage type and grid-connected type. In recent years, the state has widely promoted these two forms of household photovoltaic power generation systems and has successively introduced a number of encouraging policies. In view of the powerless areas in Qinghai and Tibet in my country, due to their vast territory, the nomadic residences, and the high cost of laying power grids, the state carried out the work of distributing "Golden Sun" household photovoltaic power generation equipment to farmers and herdsmen who have difficulty in using electricity in these two regions in 2014 and 2015, which greatly improved the "difficulty in using electricity" situation of people in these remote farming and pastoral areas.

[0004] For grid-connected distributed household photovoltaic power generation systems, the state has simplified the procedures for individual users in project filing, subsidy distribution, project acceptance, etc., shortened the project construction cycle, and enabled individual users to obtain power generation benefits as soon as possible.

[0005] Distributed household photovoltaics are mainly used in public buildings and residential buildings. It is the main development direction of photovoltaic energy at present and in the future. Distributed photovoltaics can be connected to the national grid system through the mains grid connection, and the surplus electricity can be connected to the grid as soon as it is generated, making the most efficient use of solar photovoltaic energy. Another application of distributed photovoltaics is photovoltaic power generation plus energy storage, which can not only solve the load demand that is not convenient to connect to the power grid, but also solve the problem of electricity use in areas without electricity. For the technical bottleneck of large-capacity energy storage peak regulation in the power system, distributed photovoltaics with mains can use small-capacity household energy storage with the help of smart photovoltaic Internet of Things to form a large-capacity household energy storage group to solve the technical bottleneck of peak shaving and valley filling in the power system.

[0006] The electric energy generated by the solar cell module string (i.e., each solar cell module connected in series) of the existing photovoltaic energy storage system generally enters the inverter after passing through the junction box. The inverter reads the information of the solar cell module string and cannot know the status of each solar cell module. Summary of the invention

[0007] The present invention aims at solving the above problems and provides a circuit hardware basis for a household system for doubling the energy efficiency of an intelligent photovoltaic energy storage system.

[0008] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme, which includes a solar cell module, a module collector, a data collector, an environmental detector, a local monitoring terminal, a junction box, an inverter, a meter box, a dispatching energy storage controller, a multiplier charge and discharge controller, a battery pack, a DC / AC conversion part and a dual power automatic conversion switch, characterized in that the power output port of the solar cell module is respectively connected to the input port of the module collector and the input port of the junction box, and the output port of the junction box is connected to the power grid through the inverter and the meter box in turn;

[0009] The mains interface of the multiplied charge and discharge controller is connected to the mains output end of the meter box through the first controlled switch, the solar energy conversion power interface of the multiplied charge and discharge controller is connected to the solar energy conversion power output end of the combiner box through the second controlled switch, the battery interface of the multiplied charge and discharge controller is connected to the battery pack, the output interface of the multiplied charge and discharge controller is connected to the DC port of the DC / AC conversion part, the AC port of the DC / AC conversion part is connected to the common power input port of the dual power automatic transfer switch, the standby power input port of the dual power automatic transfer switch is connected to the power grid, and the power output port of the dual power automatic transfer switch is connected to the load;

[0010] The first control signal output port of the scheduling energy storage controller is connected to the control signal input port of the first controlled switch, and the second control signal output port of the scheduling energy storage controller is connected to the control signal input port of the second controlled switch;

[0011] The information transmission port of the dispatching energy storage controller is respectively connected with the information transmission port of the multiplication charge and discharge controller, the information transmission port of the dual power automatic transfer switch, the information transmission port of the combiner box, the information transmission port of the inverter, the information transmission port of the metering box, and the information transmission port of the environmental detector;

[0012] The collected information of the component collector is transmitted to the data collector wirelessly.

[0013] As a preferred solution, the battery pack of the present invention is a lithium battery pack.

[0014] As a preferred solution, the multiplier charge and discharge controller of the present invention includes an AC / DC conversion module and a diode D10, and the battery pack includes a first battery pack and a second battery pack;

[0015] The anode of D10 is the first power input port of the multiplied charge and discharge controller, the input end of the AC / DC conversion module is the second power input port of the multiplied charge and discharge controller, the output end of the AC / DC conversion module is respectively connected to the cathode of D10, the drain of the first switch tube, and the drain of the second switch tube through the diode D11, the gate of the first switch tube is connected to the pulse signal output port of the single-chip microcomputer, and the gate of the second switch tube is connected to the pulse signal output port of the single-chip microcomputer through the inversion chip;

[0016] The source electrode of the first switch tube is connected to the positive electrode of the first battery pack, the source electrode of the second switch tube is connected to the positive electrode of the second battery pack, and the negative electrode of the first battery pack and the negative electrode of the second battery pack are connected to the first input end of the DC / AC conversion part;

[0017] The first control signal output port of the single-chip microcomputer is connected to the gate of the third switch tube, and the second control signal output port of the single-chip microcomputer is connected to the gate of the fourth switch tube; the drain of the third switch tube is connected to the positive electrode of the first battery pack, and the drain of the fourth switch tube is connected to the positive electrode of the second battery pack; the source of the third switch tube is connected to the second input end of the DC / AC conversion part, and the source of the third switch tube is connected to the third input end of the DC / AC conversion part.

[0018] As another preferred solution, the single chip microcomputer of the present invention adopts STM32F103ZET6 single chip microcomputer.

[0019] As another preferred solution, the first to fourth switch tubes of the present invention are IRF540N tubes.

[0020] As another preferred solution, the negation chip of the present invention adopts a 74LS04 chip.

[0021] As another preferred solution, the pulse signal of the present invention requires a PWM signal.

[0022] As another preferred embodiment, the component collector of the present invention includes a voltage collection part, a wireless communication part, an LED indicator part, a collector power part, a collector main control chip, a current collection part, a collector RS485 communication part and a component string selection part. The information transmission port of the collector main control chip is respectively connected to the information transmission port of the voltage collection part, the information transmission port of the wireless communication part, the information transmission port of the LED indicator part, the information transmission port of the current collection part, the information transmission port of the collector RS485 communication part, and the information transmission port of the component string selection part. The power output port of the collector power part is respectively connected to the power port of the voltage collection part, the power port of the wireless communication part, the power port of the LED indicator part, the power port of the collector main control chip, the power port of the current collection part, and the power port of the collector RS485 communication part.

[0023] As another preferred solution, the voltage collection part of the present invention includes an operational amplifier U4, the positive input end of U4 is connected to one end of a resistor R5 and one end of a resistor R4 respectively through a resistor R6, the other end of R4 is connected to PV+ through a diode D4, the other end of R5 is grounded, and the output end of U4 is connected to AD_PV through a resistor R7.

[0024] As another preferred solution, the wireless communication part of the present invention adopts HC-12 chip J1, pin 3 of J1 is connected to U2RX through resistor R11, and pin 4 of J1 is connected to U2TX through resistor R12.

[0025] As another preferred solution, the LED indicator light part of the present invention includes light emitting diodes D1-D3, the anodes of D1-D3 are connected to 3.3V, and the cathodes of D1-D3 are connected to LED3, LED2, and LED1 respectively.

[0026] As another preferred solution, the power supply part of the collector of the present invention includes an AMS1117-3.3 module U3, the 3rd pin of U3 is connected to 5.0V, and the 2nd and 4th pins of U3 are connected to 3.3V;

[0027] LM2576HV-5.0 module U2, pin 1 of U2 is connected to PV+, and pin 4 of U2 is connected to 5.0VD through inductor L1.

[0028] As another preferred solution, the main control chip of the collector described in the present invention adopts the STM32F103C8T6 chip U1, and the 12th and 13th pins of U1 are respectively connected to U2TX and U2RX, and the 15th to 17th, 29th to 34th, 37th and 7th pins of U1 are respectively connected to AD_PI, USART1_CK, AD_PV, ZC3, USART1_TX, USART1_RX, ZC2, ZC1, TMS, TCK and NRST, and the 41st to 43rd, 45th, 46th, 21st, 22nd and 25th to 28th pins of U1 are respectively connected to ZJ5, ZJ4, ZJ3, ZJ2, ZJ1, SET, LED1, LED2, LED3, ZC5 and ZC4.

[0029] As another preferred solution, the current collection part of the present invention adopts the LM358 chip U5, pin 3 of U5 is connected to 5.0VA through resistor R20, pin 1 of U5 is connected to pin 6 of U5 through resistor R24, pin 7 of U5 is connected to AD_PI through resistor R27, and pin 5 of U5 is connected to OUT through resistor R25 and resistor R22 in sequence; OUT is connected to pin 3 of J2.

[0030] As another preferred solution, the RS485 communication part of the collector of the present invention adopts SP3485 chip U6, pin 1 of U6 is connected to USART1-RX, pins 2 and 3 of U6 are connected to USART1-CK, and pin 4 of U6 is connected to USART1-TX.

[0031] As another preferred embodiment, the component string selection part of the present invention includes five connectors J4 and five connectors J5, and the pin 1 of the five connectors J4 is respectively connected to ZJ1~ZJ5, and the pin 1 of the five connectors J5 is respectively connected to ZC1~ZC5.

[0032] As another preferred embodiment, the data collector described in the present invention includes a data collector power supply part, a data collector wireless communication part, a data collector main chip control part, a data collector RS485 communication part and a data collector wireless communication part. The power output port of the data collector power supply part is respectively connected to the power port of the data collector wireless communication part, the power port of the data collector main chip control part, the power port of the data collector RS485 communication part and the power port of the data collector wireless communication part. The information transmission port of the data collector main chip control part is respectively connected to the information transmission port of the data collector wireless communication part, the information transmission port of the data collector RS485 communication part and the information transmission port of the data collector wireless communication part.

[0033] As another preferred solution, the data acquisition device power supply part of the present invention includes a 7818 module J1, wherein the 1st pin of J1 is connected to DC24V_IN through a diode D1, the 3rd pin of J1 is connected to the 1st pin of the 7812 module J2, the 3rd pin of J2 is connected to the 2nd pin of the MP2303 module U3, the 1st and 3rd pins of U3 are connected to MP_BS, and the 5th pin of U3 is connected to VCC_BAT through a resistor R8;

[0034] Pins 1, 2, 3, and 4 of the WRB2405S module U6 are connected to GND1, DC24V_IN, 5V, and GND respectively;

[0035] In the AMS1117-3.3 module, pin 3 of U4 is connected to 5V, and pins 2 and 4 of U4 are connected to 3.3VDD.

[0036] As another preferred solution, the wireless communication part of the data collector of the present invention adopts 433M module J5, and pins 3 to 8 of J5 are respectively connected to CKO, GIO2, GIO1, SDIO, SCK, and SCS.

[0037] As another preferred solution, the main chip control part of the data acquisition device described in the present invention adopts the STM32F103C8T6 chip U5, and the 10-17 pins of U5 are respectively connected to CKO, GIO2, U2TX, U2RX, GIO1, SDIO, SCK, and SCS, the 29-31 pins of U5 are respectively connected to USART1_CK, USART1_TX, and USART1_RX, and the 34 and 37 pins of U5 are respectively connected to TMS and TCK.

[0038] As another preferred solution, the RS485 communication part of the data collector of the present invention adopts SP3485 chip U2, pin 1 of U2 is connected to USART1-RX, pins 2 and 3 of U2 are connected to USART1-CK, and pin 4 of U2 is connected to USART1-TX.

[0039] As another preferred solution, the wireless communication part of the data collector of the present invention adopts SIM900 chip U1, pin 1 of U1 is connected to pin 4 of TLP521 chip U3, pin 1 of U3 is connected to ON / OFF through resistor R14, pin 9 of U1 is connected to the anode of the input end of optocoupler U8, and the collector of the output end of U8 is connected to U2RX; pin 10 of U1 is connected to the collector of the output end of optocoupler U9, and the cathode of the input end of U9 is connected to U2TX;

[0040] Pins 27 and 28 of U1 are connected to DBG_TX and DBG_RX respectively, pins 30 to 33 of U1 are connected to SIM_VDD, SIM_DATA, SIM_CLK and SIM_RST respectively, pin 66 of U1 is connected to the base of NPN transistor Q4 through resistor R28, and the collector of Q4 is connected to VCC_BAT through diode D3;

[0041] Pin 4 of the SIM card is connected to SIM_DATA through resistor R11;

[0042] Pin 1 of U7 is connected to SIM_DATA.

[0043] The data collector sends the collected information to the data center through SIM900 for remote monitoring.

[0044] As another preferred embodiment, the dispatching energy storage controller of the present invention includes a dispatching energy storage main control part, a battery, a serial port print output part, a test part, an MCU reset part, a buzzer part, a button part, an LED part, a WIFI module, an MCU power supply part, a power module, an EEPROM part, an RS485 part, a solid-state relay part, a display interface part and a gateway part. The battery is connected to the power port of the dispatching energy storage main control part, and the information transmission port of the dispatching energy storage main control part is respectively connected to the information transmission port of the serial port print output part, the information transmission port of the test part, the information transmission port of the MCU reset part, the information transmission port of the buzzer part, the information transmission port of the button part, the information transmission port of the LED part, the information transmission port of the WIFI module, the information transmission port of the EEPROM part, the information transmission port of the RS485 part, the information transmission port of the solid-state relay part, the information transmission port of the display interface part, and the information transmission port of the gateway part;

[0045] The power output port of the power module is respectively connected to the power input port of the MCU power part, the power port of the serial port print output part, the power port of the buzzer part, the power port of the solid-state relay part, and the power port of the gateway part.

[0046] As another preferred solution, the scheduling energy storage main control part of the present invention adopts STM32F103ZET6 chips P1 and P2, and the 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, and 25 pins of P1 are respectively connected to PA5, PA7, PC5, PB1, PF12, PF14, PG0, PE7, PE9, PE11, PE13, and PE15, and the 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 55, 57, 59, and 61 pins of P1 are respectively connected to PB13, PB15, PD9, PD11, PD13, PD15, PG3, PG5, PG7, PC6, and PC 8, PA8, PA10, and PA12 are connected accordingly. Pins 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, and 26 of P1 are connected to PA4, PA6, PC4, PB0, PF11, PF13, PF15, PG1, PE8, PE10, PE12, PE14, and PB10 respectively. Pins 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, and 62 of P1 are connected to PB12, PB14, PD8, PD10, PD12, PD14, PG2, PG4, PG6, PG8, PC7, PC9, PA9, and PA11 respectively.

[0047] Pins 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, and 27 of P2 are connected to PA3, PA1, GNDA, PC2, PC0, PF10, PF8, PF6, PF4, PF2, PF0, PE6, PE4, and PE2 respectively. Pins 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 55, 57, 59, and 61 of P2 are connected to PE0, PB8, PB6, PB4, PG15, PG13, PG11, PG9, PD6, PD4, PD2, PD0, PC11, and GND respectively.

[0048] Pins 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, and 26 of P2 are connected to PA2, PA0, PC3, PC1, RESET, PF9, PF7, PF5, PF3, PF1, VBAT, PE5, and PE3 respectively.

[0049] Pins 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, and 62 of P2 are respectively connected to PE1, PB9, PB7, PB5, PB3, PG14, PG12, PG10, PD7, PD5, PD3, PD1, PC12, and PC10.

[0050] As another preferred solution, the buzzer part of the present invention includes a buzzer B1, the positive pole of B1 is connected to +5V, the negative pole of B1 is connected to the collector of NPN transistor Q3, the emitter of Q3 is connected to GND, and the base of Q3 is connected to PC2 through resistor R28.

[0051] As another preferred solution, the key part of the present invention includes switches SW1~SW4, one end of SW1~SW4 is connected to PA4, PA6, PA7, PA5 respectively, and the other end of SW1~SW4 is connected to +3.3V through resistor R26.

[0052] As another preferred embodiment, the LED part of the present invention includes indicator lights E1 to E8, the anode of E1 is connected to PD0 through a resistor R1, and the cathode of E1 is connected to GND; the anode of E2 is connected to PD1 through a resistor R2, and the cathode of E2 is connected to GND; the anode of E3 is connected to PD3 through a resistor R5, and the cathode of E3 is connected to GND; the anode of E4 is connected to PD4 through a resistor R6, and the cathode of E4 is connected to GND; the anode of E5 is connected to PD5 through a resistor R9, and the cathode of E5 is connected to GND; the anode of E6 is connected to PD6 through a resistor R13, and the cathode of E6 is connected to GND; the anode of E7 is connected to PD7 through a resistor R14, and the cathode of E7 is connected to GND; the anode of E8 is connected to PG9 through a resistor R15, and the cathode of E8 is connected to GND.

[0053] As another preferred solution, the WIFI module of the present invention adopts atk-esp8266 module U8, pin 15 of U8 is connected to PC12 through resistor R34, and pin 16 of U8 is connected to PD2 through resistor R33.

[0054] As another preferred solution, the MCU power supply part of the present invention adopts REG1117-3.3 module U3, pin 3 of U3 is connected to +5V, and pin 2 of U3 is connected to +3.3V.

[0055] As another preferred solution, the power module of the present invention includes a LM2576-ADJ module U7, pin 1 of U7 is connected to +12V, pin 5 of U7 is connected to PWOER, pin 2 of U7 is connected to +4.2V through an inductor L2, pin 4 of U7 is respectively connected to one end of a resistor R38 and one end of a resistor R37, the other end of R38 is connected to GND, and one end of R37 is connected to +4.2V;

[0056] Pin 1 of LM2576-5.0 module U9 is connected to +12V, pin 2 of U9 is connected to +5V through inductor L3, and pin 4 of U9 is connected to +5V;

[0057] In the XRE10 / 24S12 module, pin 2 of U10 is connected to +24V, and pin 5 of U10 is connected to GND.

[0058] As another preferred solution, the EEPROM part of the present invention adopts a 24C02 chip U1, and the 5th and 6th pins of U1 are respectively connected to PB0 and PC4.

[0059] As another preferred solution, the RS485 part of the present invention adopts SP3485 chip U6, and pins 6 to 8 of U6 are respectively connected to PA10, PA12, and PA9.

[0060] As another preferred solution, the solid-state relay part of the present invention includes an NPN transistor Q8, the collector of Q8 is connected to P20, and the base of Q8 is connected to PC5 through a resistor R48.

[0061] As another preferred solution, the display interface part of the present invention adopts LCD1602 module P19, and the 5th, 7th, 9th, 11th and 13th pins of P19 are respectively connected to PC8, PD8, PD10, PD12 and PD14, and the 4th, 6th, 8th, 10th, 12th and 14th pins of P19 are respectively connected to PC7, PD9, PD11, PD13 and PD15, and the 16th pin of P19 is connected to the collector of NPN transistor Q4, and the base of Q4 is connected to PA11 through resistor R30.

[0062] As another preferred solution, the gateway part of the present invention includes a SIM800C chip U2, pins 1 and 2 of U2 are respectively connected to SIM800_TXD and SIM800_RXD, pin 6 of U2 is connected to PC1 through a resistor R21, pins 15 to 18 of U2 are respectively connected to SIM_DATA, SIM_CLK, SIM_RST, and SIM_VDD, pins 24 to 26 of U2 are respectively connected to USB_BUS, USB_DP, and USB_DN, pin 39 of U2 is connected to the collector of NPN transistor Q1, the base of Q1 is connected to PA1 through a resistor R3, and pin 42 of U2 is connected to PA0 through a resistor R18;

[0063] SIM800_TXD is connected to PA3 through resistor R4, and SIM800_RXD is connected to PA2 through resistor R7;

[0064] PA2 is connected to the emitter of S8550 tube Q11, and the base of Q11 is connected to SIM800_RXD through resistor R55;

[0065] PA3 is connected to the emitter of S8550 tube Q7, and the base of Q7 is connected to SIM800_TXD through resistor R46;

[0066] PC3 is connected to the base of S8050 tube Q2 through diode D3 and resistor R19, and the collector of Q2 is connected to PWOER;

[0067] Pins 4, 5, and 6 of U4 are connected to pins 4, 6, and 5 of SMF05C chip U5 respectively. Pin 6 of U4 is connected to SIM_CLK through resistor R22, pin 5 of U4 is connected to SIM_DATA through resistor R23, and pin 4 of U4 is connected to SIM_RST through resistor R24.

[0068] As another preferred solution, the local monitoring terminal of the present invention adopts a computer terminal or a mobile phone.

[0069] As another preferred solution, the environmental detector of the present invention adopts RS-QXZN-M1 environmental detector.

[0070] As another preferred solution, the combiner box of the present invention adopts a PVS combiner box.

[0071] As another preferred solution, the inverter of the present invention adopts an SPI3 inverter.

[0072] As another preferred solution, the meter box of the present invention adopts a 220V meter box.

[0073] Secondly, the DC / AC conversion part of the present invention adopts Taiqifeng photovoltaic off-grid industrial frequency inverter UD3024AM.

[0074] In addition, the dual power automatic transfer switch of the present invention adopts NZ1BR-63 dual power automatic transfer switch.

[0075] The invention has beneficial effects.

[0076] The present invention dispatches the energy storage controller to control the source of input electric energy of the multiplier charge and discharge controller, and selects the solar energy conversion electric energy of the solar cell module or the grid electric energy. According to the control strategy, select which one is the source of input electric energy. If photovoltaic priority is selected, photovoltaic priority will charge the battery through the lithium battery charge and discharge controller; when photovoltaic is insufficient, the city will charge the battery through the lithium battery charge and discharge controller. When the energy storage reaches the SOC upper limit, the photovoltaic power is connected to the grid. It is also possible to select grid electric energy as the input electric energy source during the low period at night.

[0077] The output end of the multiplier charge and discharge controller of the present invention is used to charge the battery pack and simultaneously send the direct current power of the battery pack to the DC / AC conversion part.

[0078] The component collector of the present invention collects the status information of the solar cell components and knows the status of each solar cell component. The component collector sends the collected information to the local monitoring terminal through the data collector, and the status of each solar cell component can be known through the local monitoring terminal (mobile phone or computer). When a solar cell component is found to be abnormal, it can be repaired more accurately and replaced.

[0079] The energy storage controller of the present invention can select the power input of the multiplier charge and discharge controller according to the collected relevant information to complete intelligent control. The multiplier charge and discharge controller completes the multiplier charge of the battery pack, and the battery pack supplies power to the load through the DC / AC conversion part and the dual power automatic conversion switch.

[0080] If the household also uses electricity during the peak period of daytime electricity consumption, the dual power automatic transfer switch will remain in normal state, that is, the power generated by the battery pack through the DC / AC conversion part will be used. When there is a lot of power abandonment at night, the automatic transfer switch will jump from the DC / AC conversion part to the grid power supply (the amount of electricity measured by the meter can be set at the front end of the load), realizing seamless power switching and supplying electricity to the household. BRIEF DESCRIPTION OF THE DRAWINGS

[0081] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. The protection scope of the present invention is not limited to the following description.

[0082] Figure 1 It is a system block diagram of the present invention.

[0083] Figure 2 It is a circuit schematic diagram of the voltage collection part of the component collector of the present invention.

[0084] Figure 3 It is a circuit schematic diagram of the wireless communication part of the component collector of the present invention.

[0085] Figure 4 It is a circuit schematic diagram of the LED indicator light portion of the component collector of the present invention.

[0086] Figure 5 It is a circuit schematic diagram of the current collection part of the component of the present invention.

[0087] Figure 6 It is the circuit principle diagram of the RS485 communication part of the component collector of the present invention.

[0088] Figure 7 It is a circuit schematic diagram of the power supply part of the component collector of the present invention.

[0089] Figure 8 It is a circuit schematic diagram of the main control chip of the component collector of the present invention.

[0090] Fig. 9 It is a circuit schematic diagram of the component string selection part of the component collector of the present invention.

[0091] Fig.10 The invention discloses a circuit schematic diagram of the power supply part of the data collector.

[0092] Fig.11 The present invention is a schematic diagram of the wireless communication circuit of the data collector.

[0093] Fig.12 It is a circuit principle diagram of the main chip control part of the data acquisition device of the present invention.

[0094] Fig.13 The invention discloses a circuit schematic diagram of the RS485 communication part of the data collector.

[0095] Fig.14 The present invention is a schematic diagram of the wireless communication circuit of the data collector.

[0096] Fig.15 It is a circuit schematic diagram of the main control part of the energy storage dispatching controller of the present invention.

[0097] Fig.16 It is a schematic diagram of the battery circuit of the scheduling energy storage controller of the present invention.

[0098] Fig.17 It is a circuit schematic diagram of the serial port printout part of the scheduling energy storage controller of the present invention.

[0099] Fig.18 It is a circuit schematic diagram of the test part of the dispatching energy storage controller of the present invention.

[0100] Fig.19It is a circuit schematic diagram of the MCU reset part of the scheduling energy storage controller of the present invention.

[0101] Fig. 20 It is a circuit schematic diagram of the buzzer part of the scheduling energy storage controller of the present invention.

[0102] Fig.21 It is a circuit schematic diagram of the key part of the scheduling energy storage controller of the present invention.

[0103] Fig. 22 It is a schematic diagram of the LED circuit of the energy storage controller of the present invention.

[0104] Fig.23 It is a circuit schematic diagram of the WIFI module of the scheduling energy storage controller of the present invention.

[0105] Fig.24 It is a circuit schematic diagram of the MCU power supply part of the scheduling energy storage controller of the present invention.

[0106] Fig.25 It is a circuit schematic diagram of the power module of the scheduling energy storage controller of the present invention.

[0107] Fig.26 It is a schematic diagram of the EEPROM circuit of the scheduling energy storage controller of the present invention.

[0108] Fig. 27 It is the circuit schematic diagram of the RS485 portion of the dispatching energy storage controller of the present invention.

[0109] Fig.28 It is a circuit schematic diagram of the solid-state relay portion of the dispatching energy storage controller of the present invention.

[0110] Fig.29 It is a circuit schematic diagram of the display interface portion of the scheduling energy storage controller of the present invention.

[0111] Fig.30 It is a schematic diagram of the circuit of the gateway portion of the energy storage controller for dispatching of the present invention. DETAILED DESCRIPTION

[0112] As shown in the figure, the present invention includes a solar cell module, a module collector, a data collector, an environmental detector, a local monitoring terminal, a junction box, an inverter, a metering box, a dispatching energy storage controller, a multiplier charge and discharge controller, a battery pack, a DC / AC conversion part and a dual power automatic conversion switch. The power output port (PV+, PV-) of the solar cell module is respectively connected to the input port of the module collector and the input port of the junction box, and the output port of the junction box is connected to the power grid through the inverter and the metering box in turn;

[0113] The mains interface of the multiplied charge and discharge controller is connected to the mains output end of the meter box through the first controlled switch, the solar energy conversion power interface of the multiplied charge and discharge controller is connected to the solar energy conversion power output end of the combiner box through the second controlled switch, the battery interface of the multiplied charge and discharge controller is connected to the battery pack, the output interface of the multiplied charge and discharge controller is connected to the DC port of the DC / AC conversion part, the AC port of the DC / AC conversion part is connected to the common power input port of the dual power automatic transfer switch, the standby power input port of the dual power automatic transfer switch is connected to the power grid, and the power output port of the dual power automatic transfer switch is connected to the load;

[0114] The first control signal output port of the scheduling energy storage controller is connected to the control signal input port of the first controlled switch, and the second control signal output port of the scheduling energy storage controller is connected to the control signal input port of the second controlled switch;

[0115] The information transmission port of the dispatching energy storage controller is respectively connected with the information transmission port of the multiplication charge and discharge controller, the information transmission port of the dual power automatic transfer switch, the information transmission port of the combiner box, the information transmission port of the inverter, the information transmission port of the metering box, and the information transmission port of the environmental detector;

[0116] The collected information of the component collector is transmitted to the data collector by wireless means;

[0117] The environmental detector, data collector and local monitoring are connected by wire for data transmission.

[0118] The data center can communicate wirelessly with the data collector, and the remote monitoring can communicate wirelessly with the data center.

[0119] The remote monitoring server can send instructions to the dispatching energy storage controller. The remote monitoring is carried out through the data center and wireless communication to the data collector. The data collector then sends commands to the dispatching energy storage controller. The dispatching energy storage controller controls the first controlled switch and the second controlled switch according to the instructions.

[0120] The environmental detector detects environmental information. If the detected environmental information is good but the photovoltaic power generation does not meet the standard, overall observation and operation and maintenance are required.

[0121] The dispatching energy storage controller can read the charging and discharging voltage, current state parameters, battery SOC and discharge information of the multiplied charging and discharging controller through the detection circuit, understand the current state of the battery in real time, and judge whether it can be discharged, which battery needs to be charged, and whether it is full.

[0122] The detection signal input port of the dispatching energy storage controller can be connected to the feedback signal output port of the dual power conversion switch to read the current closing state of the dual power conversion switch to know which power supply is currently supplying power to the load.

[0123] The dispatching energy storage controller collects the voltage and current information of the junction box, the dispatching energy storage controller collects the voltage, current, power and power generation information of the inverter, the dispatching energy storage controller collects the grid-connected voltage, current and power information of the metering box, and the dispatching energy storage controller receives the ambient light, temperature and humidity, wind direction and radiation information collected by the environmental detector; the above information can be collected through the RS485 line. The dispatching energy storage controller can control the opening and closing state of the first controlled switch and the second controlled switch according to the collected information and the set strategy. For example: Under normal circumstances, the second controlled switch is closed, and the solar energy conversion electric energy is used as the electric energy input of the multiplier charge and discharge controller. When the photovoltaic power is insufficient (the dispatching energy storage controller communicates with the data collector, and the data collector communicates with the component collector, and the light state of the solar cell component can be known), the second controlled switch is opened, the first controlled switch is closed, and the grid power is used as the electric energy input of the multiplier charge and discharge controller. When the energy storage of the battery group reaches the upper limit of the state of charge (SOC) (the multiplier charge and discharge controller detects the state of charge), the photovoltaic power is connected to the grid (that is, the first controlled switch and the second controlled switch are closed at the same time).

[0124] The component collector collects the voltage and current information of the solar cell components.

[0125] Figure 1 The middle dotted line represents the communication connection. The dotted line connected to the grid indicates that there is a total meter in the grid to measure the power. Read the power and related parameters, and record the photovoltaic grid power and load power consumption.

[0126] The dotted line connected to the load indicates the recording of load power and power factor parameters, and records load power, power consumption, power factor and other parameters. The 485 communication mode can be used to collect parameters such as voltage, current and status of each part in real time, and finally judged by the dispatching energy storage controller to send out control signals in real time.

[0127] A bidirectional meter can be installed in the meter box to measure the photovoltaic grid-connected power and the power output of the power grid to the load. The meter box with a bidirectional meter installed is an existing product.

[0128] The battery pack is a lithium battery pack.

[0129] The multiplied charge and discharge controller includes an AC / DC conversion module and a diode D10, wherein the anode of D10 is the first power input port of the multiplied charge and discharge controller, the input end of the AC / DC conversion module is the second power input port of the multiplied charge and discharge controller, the output end of the AC / DC conversion module is respectively connected to the cathode of D10, the drain of the first switch tube, and the drain of the second switch tube through a diode D11, the gate of the first switch tube is connected to the pulse signal output port of the single-chip microcomputer, and the gate of the second switch tube is connected to the pulse signal output port of the single-chip microcomputer through an inverting chip;

[0130] The source electrode of the first switch tube is connected to the positive electrode of the first battery pack, the source electrode of the second switch tube is connected to the positive electrode of the second battery pack, and the negative electrode of the first battery pack and the negative electrode of the second battery pack are connected to the first input end of the DC / AC conversion part;

[0131] The first control signal output port of the single chip microcomputer is connected to the gate of the third switch tube, and the second control signal output port of the single chip microcomputer is connected to the gate of the fourth switch tube; the drain of the third switch tube is connected to the positive electrode of the first battery pack, and the drain of the fourth switch tube is connected to the positive electrode of the second battery pack; the source of the third switch tube is connected to the second input end of the DC / AC conversion part, and the source of the third switch tube is connected to the third input end of the DC / AC conversion part. The first control signal and the second control signal are switch quantity signals.

[0132] The single-chip microcomputer controls the first switch tube and the second switch tube to be turned on in turn. When charging the battery pack, PWM control is used. The low-level signal is the signal to turn off the switch tube, and the battery pack is not charged. The multiplied charge and discharge controller of the present invention charges the first battery pack at a high level. When the single-chip microcomputer sends a low-level signal, it passes through the inversion chip (the low-level signal is inverted) and becomes a high level, controlling the second switch tube to be turned on, and the second switch tube charges the second battery pack, realizing multiplied charging, maximizing charging efficiency, and avoiding energy waste. The single-chip microcomputer controls the third switch tube and the fourth switch tube to output to the DC / AC conversion part. The single-chip microcomputer controls the third switch tube and the fourth switch tube, that is, controls which battery pack (the first battery pack or the second battery pack) outputs to supply power to the DC / AC; when one of the battery packs is out of power, switch to another battery pack for power supply.

[0133] The single chip microcomputer adopts STM32F103ZET6 single chip microcomputer.

[0134] The first to fourth switch tubes are IRF540N tubes.

[0135] The negation chip adopts 74LS04 chip.

[0136] The pulse signal requires a PWM signal.

[0137] The component collector includes a voltage collection part, a wireless communication part, an LED indicator part, a collector power part, a collector main control chip, a current collection part, a collector RS485 communication part and a component string selection part. The information transmission port of the collector main control chip is respectively connected to the information transmission port of the voltage collection part, the information transmission port of the wireless communication part, the information transmission port of the LED indicator part, the information transmission port of the current collection part, the information transmission port of the collector RS485 communication part, and the information transmission port of the component string selection part. The power output port of the collector power part is respectively connected to the power port of the voltage collection part, the power port of the wireless communication part, the power port of the LED indicator part, the power port of the collector main control chip, the power port of the current collection part, and the power port of the collector RS485 communication part.

[0138] Each component collector can communicate with each other via RS485. A main component collector is set up. The main component collector collects the collection parameters of other component collectors and then sends this string of component parameters to the data collector through the wireless communication part.

[0139] The voltage collection part includes an operational amplifier U4, the positive input end of U4 is connected to one end of resistor R5 and one end of resistor R4 through resistor R6, the other end of R4 is connected to PV+ through diode D4, the other end of R5 is grounded, and the output end of U4 is connected to AD_PV through resistor R7.

[0140] Operational amplifier U4 collects PV+, converts it into AD_PV and sends it to STM32F103C8T6 chip U1 to collect the voltage of the solar cell module.

[0141] The wireless communication part adopts HC-12 chip J1, pin 3 of J1 is connected to U2RX through resistor R11, and pin 4 of J1 is connected to U2TX through resistor R12.

[0142] The collected information of the component collector is transmitted to the data collector through the 433MHZ module.

[0143] The LED indicator light part includes light emitting diodes D1-D3, anodes of D1-D3 are connected to 3.3V, and cathodes of D1-D3 are connected to LED3, LED2, and LED1 respectively.

[0144] LED1, LED2, and LED3 indicate the main program running status, communication status, and discharge status respectively.

[0145] The collector power supply part includes an AMS1117-3.3 module U3, the 3rd pin of U3 is connected to 5.0V, and the 2nd and 4th pins of U3 are connected to 3.3V;

[0146] LM2576HV-5.0 module U2, pin 1 of U2 is connected to PV+, and pin 4 of U2 is connected to 5.0VD through inductor L1.

[0147] The main control chip of the collector adopts STM32F103C8T6 chip U1, and pins 12 and 13 of U1 are connected to U2TX and U2RX respectively, pins 15-17, 29-34, 37 and 7 of U1 are connected to AD_PI, USART1_CK, AD_PV, ZC3, USART1_TX, USART1_RX, ZC2, ZC1, TMS, TCK and NRST respectively, and pins 41-43, 45, 46, 21, 22 and 25-28 of U1 are connected to ZJ5, ZJ4, ZJ3, ZJ2, ZJ1, SET, LED1, LED2, LED3, ZC5 and ZC4 respectively.

[0148] The current collection part uses the LM358 chip U5, U5's 3rd pin is connected to 5.0VA through resistor R20, U5's 1st pin is connected to U5's 6th pin through resistor R24, U5's 7th pin is connected to AD_PI through resistor R27, U5's 5th pin is connected to OUT through resistor R25 and resistor R22 in turn; OUT is connected to the 3rd pin of the current transformer J2. Figure 5 As shown, Iin and Iout at the upper end of J2 (PV+ of the solar cell module is connected to Iin, and PV- of the solar cell module is connected to Iout) are the lead terminals for the current input and output of the current transformer. VCC5 at the lower end of J2 is the power supply terminal of the current transformer. OUT at the lower end of J2 is the detection output terminal of the transformer.

[0149] The current transformer J2 may adopt a closed-loop Hall current sensor of the HCS-LSP 15A model.

[0150] U5 collects the current of the solar cell module, converts it into AD_PI and sends it to the STM32F103C8T6 chip U1.

[0151] The front-end circuit of pin 6 of U5 is a voltage reference circuit, which provides a reference voltage for the collected signal. After the current flows through the current transformer J2, the OUT voltage generated enters the positive pole of the amplifier U5 after being divided by resistors R23 and R25, and then generates a voltage AD_PI after passing through the amplifier U5, which is collected by the microcontroller.

[0152] The RS485 communication part of the collector adopts SP3485 chip U6, pin 1 of U6 is connected to USART1-RX, pins 2 and 3 of U6 are connected to USART1-CK, and pin 4 of U6 is connected to USART1-TX.

[0153] The component string selection part includes five connectors J4 and five connectors J5. Pin 1 of the five connectors J4 is connected to ZJ1 to ZJ5 respectively, and pin 1 of the five connectors J5 is connected to ZC1 to ZC5 respectively.

[0154] like Figure 1 As shown, since there are many strings of solar cell modules, each string of solar cell modules has many solar cell modules, and each solar cell module corresponds to a module collector, in order to distinguish the solar cell modules and to know which solar cell module has a problem, the module collector is encoded through the module string selection part. Fig. 9 As shown, J5*5 corresponds to 5 strings of solar cell modules, and J4*5 corresponds to 5 solar cell modules in each string of solar cell modules. By shorting the 1st and 2nd pins of a certain J5 in J5*5 through a jumper, the module collector is set to which string of solar cell modules the module collector belongs to. By shorting the 1st and 2nd pins of a certain J4 in J4*5 through a jumper, the module collector is set to which string of solar cell modules the module collector belongs to.

[0155] The data collector includes a data collector power supply part, a data collector wireless communication part, a data collector main chip control part, a data collector RS485 communication part and a data collector wireless communication part. The power output port of the data collector power supply part is respectively connected to the power supply port of the data collector wireless communication part, the power supply port of the data collector main chip control part, the power supply port of the data collector RS485 communication part and the power supply port of the data collector wireless communication part. The information transmission port of the data collector main chip control part is respectively connected to the information transmission port of the data collector wireless communication part, the information transmission port of the data collector RS485 communication part and the information transmission port of the data collector wireless communication part.

[0156] The data acquisition device power supply part includes a 7818 module J1, wherein the 1st pin of J1 is connected to DC24V_IN through a diode D1, the 3rd pin of J1 is connected to the 1st pin of the 7812 module J2, the 3rd pin of J2 is connected to the 2nd pin of the MP2303 module U3, the 1st and 3rd pins of U3 are connected to MP_BS, and the 5th pin of U3 is connected to VCC_BAT through a resistor R8;

[0157] Pins 1, 2, 3, and 4 of the WRB2405S module U6 are connected to GND1, DC24V_IN, 5V, and GND respectively;

[0158] In the AMS1117-3.3 module, pin 3 of U4 is connected to 5V, and pins 2 and 4 of U4 are connected to 3.3VDD.

[0159] Set U6 to isolate GND1, DC24V from 5V, GND; ground isolation makes the system more stable and reliable.

[0160] U3 is a switching power supply module, which inputs 24V, compares the internal voltage, adjusts the PWM waveform, and outputs a stable 4.2V. MP_BS is the internal MOS tube pin drive switch.

[0161] The wireless communication part of the data collector adopts 433M module J5, and pins 3 to 8 of J5 are respectively connected to CKO, GIO2, GIO1, SDIO, SCK, and SCS. The 433M module J5 of the data collector is used to communicate with the wireless communication part J1 of the component collector.

[0162] The main chip control part of the data collector adopts STM32F103C8T6 chip U5, and pins 10 to 17 of U5 are respectively connected to CKO, GIO2, U2TX, U2RX, GIO1, SDIO, SCK, and SCS, pins 29 to 31 of U5 are respectively connected to USART1_CK, USART1_TX, and USART1_RX, and pins 34 and 37 of U5 are respectively connected to TMS and TCK.

[0163] The RS485 communication part of the data collector adopts SP3485 chip U2, pin 1 of U2 is connected to USART1-RX, pins 2 and 3 of U2 are connected to USART1-CK, and pin 4 of U2 is connected to USART1-TX.

[0164] The RS485 communication part U2 of the data logger communicates with the environmental detector and the local monitoring terminal.

[0165] The wireless communication part of the data collector adopts SIM900 chip U1, pin 1 of U1 is connected to pin 4 of TLP521 chip U3, pin 1 of U3 is connected to ON / OFF through resistor R14, pin 9 of U1 is connected to the anode of the input end of optocoupler U8, and the collector of the output end of U8 is connected to U2RX; pin 10 of U1 is connected to the collector of the output end of optocoupler U9, and the cathode of the input end of U9 is connected to U2TX;

[0166] The signals generated by U2TX and U2RX generated by the microcontroller are isolated by optical couplers and transmitted to SIM900.

[0167] Signals are isolated through U8 and U9 to avoid mutual interference.

[0168] Pins 27 and 28 of U1 are connected to DBG_TX and DBG_RX respectively, pins 30 to 33 of U1 are connected to SIM_VDD, SIM_DATA, SIM_CLK and SIM_RST respectively, pin 66 of U1 is connected to the base of NPN transistor Q4 through resistor R28, and the collector of Q4 is connected to VCC_BAT through diode D3;

[0169] J6 is used to upgrade the chip SIM900.

[0170] D3 is the module status indicator light. If it lights up for 100 milliseconds and goes out for 3 seconds, the network is in normal status.

[0171] Pin 4 of the SIM card is connected to SIM_DATA through resistor R11;

[0172] Pin 1 of U7 is connected to SIM_DATA. U7 is the SIM card holder.

[0173] The data collector sends the collected information to the data center through SIM900 for remote monitoring.

[0174] The dispatching energy storage controller includes a dispatching energy storage main control part, a battery, a serial port print output part, a test part, an MCU reset part, a buzzer part, a button part, an LED part, a WIFI module, an MCU power supply part, a power module, an EEPROM part, an RS485 part, a solid-state relay part, a display interface part and a gateway part. The battery is connected to the power port of the dispatching energy storage main control part, and the information transmission port of the dispatching energy storage main control part is respectively connected to the information transmission port of the serial port print output part, the information transmission port of the test part, the information transmission port of the MCU reset part, the information transmission port of the buzzer part, the information transmission port of the button part, the information transmission port of the LED part, the information transmission port of the WIFI module, the information transmission port of the EEPROM part, the information transmission port of the RS485 part, the information transmission port of the solid-state relay part, the information transmission port of the display interface part, and the information transmission port of the gateway part;

[0175] The power output port of the power module is respectively connected to the power input port of the MCU power part, the power port of the serial port print output part, the power port of the buzzer part, the power port of the solid-state relay part, and the power port of the gateway part.

[0176] The serial port print output part is used to print out data information and is used during debugging.

[0177] The test section is used to test the communication section.

[0178] The dispatching energy storage main control part adopts STM32F103ZET6 chips P1 and P2. Pins 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, and 25 of P1 are respectively connected to PA5, PA7, PC5, PB1, PF12, PF14, PG0, PE7, PE9, PE11, PE13, and PE15. Pins 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 55, 57, 59, and 61 of P1 are respectively connected to PB13, PB15, PD9, PD11, PD13, PD15, PG3, PG5, PG7, PC6, PC8, PA8, PA10 and PA12 are connected correspondingly. Pins 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24 and 26 of P1 are connected correspondingly to PA4, PA6, PC4, PB0, PF11, PF13, PF15, PG1, PE8, PE10, PE12, PE14 and PB10 respectively. Pins 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60 and 62 of P1 are connected correspondingly to PB12, PB14, PD8, PD10, PD12, PD14, PG2, PG4, PG6, PG8, PC7, PC9, PA9 and PA11 respectively.

[0179] Pins 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, and 27 of P2 are connected to PA3, PA1, GNDA, PC2, PC0, PF10, PF8, PF6, PF4, PF2, PF0, PE6, PE4, and PE2 respectively. Pins 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 55, 57, 59, and 61 of P2 are connected to PE0, PB8, PB6, PB4, PG15, PG13, PG11, PG9, PD6, PD4, PD2, PD0, PC11, and GND respectively.

[0180] Pins 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, and 26 of P2 are connected to PA2, PA0, PC3, PC1, RESET, PF9, PF7, PF5, PF3, PF1, VBAT, PE5, and PE3 respectively.

[0181] Pins 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, and 62 of P2 are respectively connected to PE1, PB9, PB7, PB5, PB3, PG14, PG12, PG10, PD7, PD5, PD3, PD1, PC12, and PC10.

[0182] The buzzer part includes a buzzer B1, the positive electrode of B1 is connected to +5V, the negative electrode of B1 is connected to the collector of NPN transistor Q3, the emitter of Q3 is connected to GND, and the base of Q3 is connected to PC2 through resistor R28. When the communication fails, the buzzer alarms.

[0183] The key part includes switches SW1-SW4, one end of SW1-SW4 is connected to PA4, PA6, PA7, PA5 respectively, and the other end of SW1-SW4 is connected to +3.3V through resistor R26. Key setting input, such as setting system time, sending control commands, etc.

[0184] The LED part includes indicator lights E1~E8, the anode of E1 is connected to PD0 through a resistor R1, and the cathode of E1 is connected to GND; the anode of E2 is connected to PD1 through a resistor R2, and the cathode of E2 is connected to GND; the anode of E3 is connected to PD3 through a resistor R5, and the cathode of E3 is connected to GND; the anode of E4 is connected to PD4 through a resistor R6, and the cathode of E4 is connected to GND; the anode of E5 is connected to PD5 through a resistor R9, and the cathode of E5 is connected to GND; the anode of E6 is connected to PD6 through a resistor R13, and the cathode of E6 is connected to GND; the anode of E7 is connected to PD7 through a resistor R14, and the cathode of E7 is connected to GND; the anode of E8 is connected to PG9 through a resistor R15, and the cathode of E8 is connected to GND.

[0185] E1-Program running status; E2-485 communication running status; E3-SIM900 communication running status; E4-WIFI communication running status; E5-P6 solid-state relay output status; E6-P7 solid-state relay output status; E7-P21 solid-state relay output status; E8-P22 solid-state relay output status.

[0186] The WIFI module uses atk-esp8266 module U8, U8's 15th pin is connected to PC12 through resistor R34, and U8's 16th pin is connected to PD2 through resistor R33. The WIFI module is used for mobile terminal communication in the same WIFI network, and the mobile terminal is used to display information such as sending and receiving information, system status, which component has an alarm, and battery status parameters.

[0187] The MCU power supply part adopts REG1117-3.3 module U3, pin 3 of U3 is connected to +5V, and pin 2 of U3 is connected to +3.3V.

[0188] The aforementioned battery is used to store internal clock information, and a separate MCU power module U3 is provided to make the power supply more stable and reliable.

[0189] The power module includes a LM2576-ADJ module U7, wherein pin 1 of U7 is connected to +12V, pin 5 of U7 is connected to PWOER, pin 2 of U7 is connected to +4.2V via an inductor L2, pin 4 of U7 is respectively connected to one end of a resistor R38 and one end of a resistor R37, the other end of R38 is connected to GND, and one end of R37 is connected to +4.2V;

[0190] Pin 1 of LM2576-5.0 module U9 is connected to +12V, pin 2 of U9 is connected to +5V through inductor L3, and pin 4 of U9 is connected to +5V;

[0191] In the XRE10 / 24S12 module, pin 2 of U10 is connected to +24V, and pin 5 of U10 is connected to GND.

[0192] +12V and +24V are external switching power input terminals.

[0193] P2 controls POWER through the PC3 pin, and then controls whether the power module U7 outputs. U7 outputs 4.2V, which is used to power SIM800. When data transmission is not needed, the power supply of the module is turned off to save power consumption.

[0194] The EEPROM part uses a 24C02 chip U1, and the 5th and 6th pins of U1 are respectively connected to PB0 and PC4. The EEPROM part is used to store the setting time and the parameter data sent by the server.

[0195] The RS485 part uses SP3485 chip U6, and pins 6 to 8 of U6 are connected to PA10, PA12, and PA9 respectively. The RS485 part can be used to communicate with environmental detectors, data collectors, junction boxes, inverters, meter boxes, power grids, dual power automatic transfer switches, and multiplier charge and discharge controllers. P10 is the communication terminal of 485 communication AB, which is connected to external equipment AB for communication.

[0196] The solid-state relay part includes an NPN transistor Q8, the collector of Q8 is connected to P20, and the base of Q8 is connected to PC5 through a resistor R48. P20 and P21 are relays for controlling the switches (first controlled switch and second controlled switch) at the output ends of the combiner box and the meter box in the overall block diagram. The solid-state relay part controls a total of five relays, and the other three relays are standby.

[0197] The display interface part adopts LCD1602 module P19, and pins 5, 7, 9, 11, and 13 of P19 are respectively connected to PC8, PD8, PD10, PD12, and PD14, and pins 4, 6, 8, 10, 12, and 14 of P19 are respectively connected to PC7, PD9, PD11, PD13, and PD15, and pin 16 of P19 is connected to the collector of NPN transistor Q4, and the base of Q4 is connected to PA11 through resistor R30.

[0198] PA11 is used to control the backlight of LCD.

[0199] The gateway part includes a SIM800C chip U2, wherein the pins 1 and 2 of U2 are respectively connected to SIM800_TXD and SIM800_RXD, the pin 6 of U2 is connected to PC1 through a resistor R21, the pins 15 to 18 of U2 are respectively connected to SIM_DATA, SIM_CLK, SIM_RST, and SIM_VDD, the pins 24 to 26 of U2 are respectively connected to USB_BUS, USB_DP, and USB_DN, the pin 39 of U2 is connected to the collector of NPN transistor Q1, the base of Q1 is connected to PA1 through a resistor R3, and the pin 42 of U2 is connected to PA0 through a resistor R18;

[0200] SIM800_TXD is connected to PA3 through resistor R4, and SIM800_RXD is connected to PA2 through resistor R7;

[0201] PA2 is connected to the emitter of S8550 tube Q11, and the base of Q11 is connected to SIM800_RXD through resistor R55;

[0202] PA3 is connected to the emitter of S8550 tube Q7, and the base of Q7 is connected to SIM800_TXD through resistor R46;

[0203] PC3 is connected to the base of S8050 tube Q2 through diode D3 and resistor R19, and the collector of Q2 is connected to PWOER;

[0204] Pins 4, 5, and 6 of U4 are connected to pins 4, 6, and 5 of SMF05C chip U5 respectively. Pin 6 of U4 is connected to SIM_CLK through resistor R22, pin 5 of U4 is connected to SIM_DATA through resistor R23, and pin 4 of U4 is connected to SIM_RST through resistor R24.

[0205] U4 is the SIM card holder.

[0206] The gateway part is used for communication with the server.

[0207] Q1: The on / off control pin of SIM800. For example, when data upload is not needed at night, the module can be turned off to save power consumption and reduce heat dissipation of the module.

[0208] Q7 and Q11 control the communication between the single-chip computer P2 and SIM800. SIM800_RXD is amplified and isolated by Q11 and then sent to PA2. SIM800_TXD is amplified and isolated by Q7 and then sent to PA3.

[0209] U4 is the SIM card holder. U5 is a transient suppression diode to protect the communication line.

[0210] P4 is used to test the communication data between the MCU and the SIM800 module. By connecting to the host computer, you can observe whether the data is correct.

[0211] PA0 reads the working status parameters of SIM800, and PC1 reads the data terminal preparation status.

[0212] The local monitoring terminal is a computer terminal or a mobile phone.

[0213] The environmental detector adopts RS-QXZN-M1 environmental detector.

[0214] The combiner box adopts a PVS combiner box.

[0215] The inverter adopts SPI3 inverter.

[0216] The meter box adopts a 220V meter box.

[0217] The DC / AC conversion part adopts Taiqifeng photovoltaic off-grid industrial frequency inverter UD3024AM.

[0218] The dual power automatic transfer switch adopts NZ1BR-63 dual power automatic transfer switch.

[0219] It can be understood that the above specific description of the present invention is only used to illustrate the present invention and is not limited to the technical solutions described in the embodiments of the present invention. Those skilled in the art should understand that the present invention can still be modified or replaced by equivalents to achieve the same technical effects; as long as the use requirements are met, they are within the protection scope of the present invention.

Claims

1. Intelligent photovoltaic energy storage energy efficiency doubling household system, including solar cell components, component collectors, data collectors, environmental detectors, local monitoring terminals, junction boxes, inverters, metering boxes, dispatching energy storage controllers, doubling charge and discharge controllers, battery packs, DC / AC conversion parts and dual power automatic transfer switches, characterized in that The power output port of the solar cell module is connected to the input port of the module collector and the input port of the combiner box respectively, and the output port of the combiner box is connected to the power grid through the inverter and the meter box in turn; The mains interface of the multiplied charge and discharge controller is connected to the mains output end of the meter box through the first controlled switch, the solar energy conversion power interface of the multiplied charge and discharge controller is connected to the solar energy conversion power output end of the combiner box through the second controlled switch, the battery interface of the multiplied charge and discharge controller is connected to the battery pack, the output interface of the multiplied charge and discharge controller is connected to the DC port of the DC / AC conversion part, the AC port of the DC / AC conversion part is connected to the common power input port of the dual power automatic transfer switch, the standby power input port of the dual power automatic transfer switch is connected to the power grid, and the power output port of the dual power automatic transfer switch is connected to the load; The first control signal output port of the scheduling energy storage controller is connected to the control signal input port of the first controlled switch, and the second control signal output port of the scheduling energy storage controller is connected to the control signal input port of the second controlled switch; The information transmission port of the dispatching energy storage controller is respectively connected with the information transmission port of the multiplication charge and discharge controller, the information transmission port of the dual power automatic transfer switch, the information transmission port of the combiner box, the information transmission port of the inverter, the information transmission port of the metering box, and the information transmission port of the environmental detector; The collected information of the component collector is transmitted to the data collector wirelessly.

2. According to claim 1, the intelligent photovoltaic energy storage energy efficiency doubling household system is characterized in that The multiplier charge and discharge controller includes an AC / DC conversion module and a diode D10, and the battery pack includes a first battery pack and a second battery pack; The anode of D10 is the first power input port of the multiplied charge and discharge controller, the input end of the AC / DC conversion module is the second power input port of the multiplied charge and discharge controller, the output end of the AC / DC conversion module is respectively connected to the cathode of D10, the drain of the first switch tube, and the drain of the second switch tube through the diode D11, the gate of the first switch tube is connected to the pulse signal output port of the single-chip microcomputer, and the gate of the second switch tube is connected to the pulse signal output port of the single-chip microcomputer through the inversion chip; The source electrode of the first switch tube is connected to the positive electrode of the first battery pack, the source electrode of the second switch tube is connected to the positive electrode of the second battery pack, and the negative electrode of the first battery pack and the negative electrode of the second battery pack are connected to the first input end of the DC / AC conversion part; The first control signal output port of the single-chip microcomputer is connected to the gate of the third switch tube, and the second control signal output port of the single-chip microcomputer is connected to the gate of the fourth switch tube; the drain of the third switch tube is connected to the positive electrode of the first battery pack, and the drain of the fourth switch tube is connected to the positive electrode of the second battery pack; the source of the third switch tube is connected to the second input end of the DC / AC conversion part, and the source of the third switch tube is connected to the third input end of the DC / AC conversion part.

3. According to claim 1, the intelligent photovoltaic energy storage energy efficiency doubling household system is characterized in that The component collector includes a voltage collection part, a wireless communication part, an LED indicator part, a collector power part, a collector main control chip, a current collection part, a collector RS485 communication part and a component string selection part. The information transmission port of the collector main control chip is respectively connected to the information transmission port of the voltage collection part, the information transmission port of the wireless communication part, the information transmission port of the LED indicator part, the information transmission port of the current collection part, the information transmission port of the collector RS485 communication part, and the information transmission port of the component string selection part. The power output port of the collector power part is respectively connected to the power port of the voltage collection part, the power port of the wireless communication part, the power port of the LED indicator part, the power port of the collector main control chip, the power port of the current collection part, and the power port of the collector RS485 communication part.

4. According to claim 3, the intelligent photovoltaic energy storage energy efficiency doubling household system is characterized in that The main control chip of the collector adopts STM32F103C8T6 chip U1, and pins 12 and 13 of U1 are connected to U2TX and U2RX respectively, pins 15-17, 29-34, 37 and 7 of U1 are connected to AD_PI, USART1_CK, AD_PV, ZC3, USART1_TX, USART1_RX, ZC2, ZC1, TMS, TCK and NRST respectively, and pins 41-43, 45, 46, 21, 22 and 25-28 of U1 are connected to ZJ5, ZJ4, ZJ3, ZJ2, ZJ1, SET, LED1, LED2, LED3, ZC5 and ZC4 respectively.

5. According to claim 3, the intelligent photovoltaic energy storage energy efficiency doubling household system is characterized in that The component string selection part includes five connectors J4 and five connectors J5. Pin 1 of the five connectors J4 is connected to ZJ1 to ZJ5 respectively, and pin 1 of the five connectors J5 is connected to ZC1 to ZC5 respectively.

6. The smart photovoltaic energy storage system for household use according to claim 1 is characterized in that The data collector includes a data collector power supply part, a data collector wireless communication part, a data collector main chip control part, a data collector RS485 communication part and a data collector wireless communication part. The power output port of the data collector power supply part is respectively connected to the power supply port of the data collector wireless communication part, the power supply port of the data collector main chip control part, the power supply port of the data collector RS485 communication part and the power supply port of the data collector wireless communication part. The information transmission port of the data collector main chip control part is respectively connected to the information transmission port of the data collector wireless communication part, the information transmission port of the data collector RS485 communication part and the information transmission port of the data collector wireless communication part.

7. The smart photovoltaic energy storage system for household use according to claim 6 is characterized in that The main chip control part of the data collector adopts STM32F103C8T6 chip U5, and pins 10 to 17 of U5 are respectively connected to CKO, GIO2, U2TX, U2RX, GIO1, SDIO, SCK, and SCS, pins 29 to 31 of U5 are respectively connected to USART1_CK, USART1_TX, and USART1_RX, and pins 34 and 37 of U5 are respectively connected to TMS and TCK.

8. The smart photovoltaic energy storage system for household use according to claim 1 is characterized in that The dispatching energy storage controller includes a dispatching energy storage main control part, a battery, a serial port print output part, a test part, an MCU reset part, a buzzer part, a button part, an LED part, a WIFI module, an MCU power supply part, a power module, an EEPROM part, an RS485 part, a solid-state relay part, a display interface part and a gateway part. The battery is connected to the power port of the dispatching energy storage main control part, and the information transmission port of the dispatching energy storage main control part is respectively connected to the information transmission port of the serial port print output part, the information transmission port of the test part, the information transmission port of the MCU reset part, the information transmission port of the buzzer part, the information transmission port of the button part, the information transmission port of the LED part, the information transmission port of the WIFI module, the information transmission port of the EEPROM part, the information transmission port of the RS485 part, the information transmission port of the solid-state relay part, the information transmission port of the display interface part, and the information transmission port of the gateway part; The power output port of the power module is respectively connected to the power input port of the MCU power part, the power port of the serial port print output part, the power port of the buzzer part, the power port of the solid-state relay part, and the power port of the gateway part.

9. The smart photovoltaic energy storage system for household use according to claim 8 is characterized in that The dispatching energy storage main control part adopts STM32F103ZET6 chips P1 and P2. Pins 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, and 25 of P1 are respectively connected to PA5, PA7, PC5, PB1, PF12, PF14, PG0, PE7, PE9, PE11, PE13, and PE15. Pins 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 55, 57, 59, and 61 of P1 are respectively connected to PB13, PB15, PD9, PD11, PD13, PD15, PG3, PG5, PG7, PC6 , PC8, PA8, PA10, and PA12 are connected accordingly. Pins 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, and 26 of P1 are connected to PA4, PA6, PC4, PB0, PF11, PF13, PF15, PG1, PE8, PE10, PE12, PE14, and PB10 respectively. Pins 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, and 62 of P1 are connected to PB12, PB14, PD8, PD10, PD12, PD14, PG2, PG4, PG6, PG8, PC7, PC9, PA9, and PA11 respectively. Pins 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, and 27 of P2 are connected to PA3, PA1, GNDA, PC2, PC0, PF10, PF8, PF6, PF4, PF2, PF0, PE6, PE4, and PE2 respectively. Pins 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 55, 57, 59, and 61 of P2 are connected to PE0, PB8, PB6, PB4, PG15, PG13, PG11, PG9, PD6, PD4, PD2, PD0, PC11, and GND respectively. Pins 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, and 26 of P2 are connected to PA2, PA0, PC3, PC1, RESET, PF9, PF7, PF5, PF3, PF1, VBAT, PE5, and PE3 respectively. Pins 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, and 62 of P2 are respectively connected to PE1, PB9, PB7, PB5, PB3, PG14, PG12, PG10, PD7, PD5, PD3, PD1, PC12, and PC10.

10. The smart photovoltaic energy storage system for household use according to claim 8 is characterized in that The gateway part includes a SIM800C chip U2, wherein the pins 1 and 2 of U2 are respectively connected to SIM800_TXD and SIM800_RXD, the pin 6 of U2 is connected to PC1 through a resistor R21, the pins 15 to 18 of U2 are respectively connected to SIM_DATA, SIM_CLK, SIM_RST, and SIM_VDD, the pins 24 to 26 of U2 are respectively connected to USB_BUS, USB_DP, and USB_DN, the pin 39 of U2 is connected to the collector of NPN transistor Q1, the base of Q1 is connected to PA1 through a resistor R3, and the pin 42 of U2 is connected to PA0 through a resistor R18; SIM800_TXD is connected to PA3 through resistor R4, and SIM800_RXD is connected to PA2 through resistor R7; PA2 is connected to the emitter of S8550 tube Q11, and the base of Q11 is connected to SIM800_RXD through resistor R55; PA3 is connected to the emitter of S8550 tube Q7, and the base of Q7 is connected to SIM800_TXD through resistor R46; PC3 is connected to the base of S8050 tube Q2 through diode D3 and resistor R19, and the collector of Q2 is connected to PWOER; Pins 4, 5, and 6 of U4 are connected to pins 4, 6, and 5 of SMF05C chip U5 respectively. Pin 6 of U4 is connected to SIM_CLK through resistor R22, pin 5 of U4 is connected to SIM_DATA through resistor R23, and pin 4 of U4 is connected to SIM_RST through resistor R24.

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