Novel balcony energy storage photovoltaic controller

Abstract

The utility model discloses a novel balcony energy storage photovoltaic controller, which comprises a PVHUB balcony energy storage photovoltaic controller, a micro inverter A, a micro inverter B, a battery pack, a photovoltaic panel A and a photovoltaic panel B, corresponding ends of the PVHUB balcony energy storage photovoltaic controller are externally connected with a battery pack, a micro inverter A, a micro inverter B, a photovoltaic panel A and a photovoltaic panel B respectively; the PVHUB balcony energy storage photovoltaic controller further comprises a bidirectional DC / DC circuit A, a bidirectional DC / DC circuit B connected with the corresponding end of the bidirectional DC / DC circuit A, and a wireless module. The wireless module is used for being connected with an external cloud platform. According to the novel balcony energy storage controller designed by the utility model, the problems of intelligent power storage and power utilization in a balcony energy storage system are solved, and the purposes that the balcony energy storage system is controlled to operate according to an optimal benefit mode by using a mobile phone APP terminal, and photovoltaic power generation is smoothly matched with household load power utilization can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaics, in particular to a novel balcony energy storage photovoltaic controller. Background Art

[0002] With the development of new energy and carbon neutrality, the photovoltaic energy storage industry is changing with each passing day. Among them, the solution of household photovoltaic panels combined with micro-inverters with MPPT function has quickly become the first choice for energy saving for users at home and abroad. That is, the MPPT tracking characteristics of the micro-inverter (hereinafter referred to as "micro-inverter") are used to convert the DC power generated by the photovoltaic panels into AC power, and supply power to household power loads. It can even transmit excess electricity to the power grid to alleviate the pressure on the regional power grid.

[0003] With the popularity of balcony solar photovoltaic panels and the accompanying use of a large number of micro-inverters, more and more instant electricity cannot be effectively utilized, and energy storage batteries begin to assume the role of storing photovoltaic panel electricity and a stable input source for micro-inverter power generation. In view of the difference in user electricity consumption time periods and prices, the timeliness of photovoltaic power generation, and the timing matching of micro-inverter power generation, the balcony energy storage system urgently needs to be equipped with a control center to coordinate the efficient cooperation of photovoltaic power generation, battery charging and discharging, and micro-inverter power generation, so as to maximize the utilization rate of photovoltaic panels while reducing user electricity bills and reasonably arranging charging and discharging time periods. The PVHUB (balcony energy storage photovoltaic controller) designed by this utility model was born for this purpose.

[0004] The micro-inverters on the market have built-in MPPT function. When the photovoltaic panels are saturated with sunlight, the photovoltaic panels can be directly connected to the micro-inverter, and the micro-inverter directly supplies AC power to the household power grid. If the load of household electrical appliances is light or even most of them are turned off, and the household power grid and the regional power grid are set as a one-way channel (that is, the regional power grid can transmit electricity to the household power grid, but the household power grid cannot feed electricity to the regional power grid), without PVHUB and energy storage batteries, most of the electricity generated by the photovoltaic panels at this time cannot be converted and utilized, greatly reducing the light energy income of the system. In some parts of Europe, the price of electricity is lower during the day than at night. Assuming that photovoltaic power generation can be used during the day and energy can be stored according to user preferences through PVHUB, at night, the household electricity bill can be reduced by using micro-inverters to supply power to the household power grid, and the income generated from this will gradually cover the cost of the new energy system in the long run. If the household power grid can feed electricity to the regional power grid, the regional power grid will reduce the pressure on power supply and ease the cost of large-scale power construction. Utility Model Content

[0005] In view of the problems existing in the prior art, the utility model provides a novel balcony energy storage photovoltaic controller.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a novel balcony energy storage photovoltaic controller, including a PVHUB balcony energy storage photovoltaic controller, a micro inverter A, a micro inverter B, a battery pack, a photovoltaic panel A, and a photovoltaic panel B;

[0007] The corresponding ends of the PVHUB balcony energy storage photovoltaic controller are respectively connected to a battery pack, micro inverter A and micro inverter B, photovoltaic panel A and photovoltaic panel B;

[0008] The PVHUB balcony energy storage photovoltaic controller also includes a bidirectional DC / DC circuit A, a bidirectional DC / DC circuit B connected to the corresponding end of the bidirectional DC / DC circuit A, and a wireless module;

[0009] The first end of the bidirectional DC / DC circuit A is connected to the positive electrode of the battery pack, and the second end is connected to the photovoltaic panel A and the micro inverter A respectively; the first end of the bidirectional DC / DC circuit B is connected to the negative electrode of the battery pack, and the second end is connected to the photovoltaic panel B and the micro inverter B respectively; the wireless module is used to connect to an external cloud platform.

[0010] Preferably, the battery pack is connected to the PVHUB balcony energy storage photovoltaic controller via the battery power line and the signal line, the input power lines of the micro-inverter A and micro-inverter B are connected to the PVHUB balcony energy storage photovoltaic controller, and the output power lines of the micro-inverter A and micro-inverter B are connected to the power grid.

[0011] Preferably, the PVHUB balcony energy storage photovoltaic controller also includes an MCU, a current sampling module, a voltage sampling module, an auxiliary power supply module, a drive control module, and a 485 communication module; the corresponding ends of the MCU are electrically connected to the corresponding ends of the current sampling module, the voltage sampling module, the auxiliary power supply module, the drive control module, the 485 communication module, and the wireless module, respectively.

[0012] Preferably, the bidirectional DC / DC circuit A comprises a DC-DC converter A, a resistor RS2, a resistor RS4, a resistor RS6, a SWITCH1 switch, and an RLY-IN switch arranged in the DC-DC converter A;

[0013] The bidirectional DC / DC circuit B includes a DC-DC converter B, a resistor RS3 arranged in the DC-DC converter B, a resistor RS1, a resistor RS7, a SWITCH2 switch, and a resistor RS5;

[0014] The corresponding ends of the DC-DC converter A are electrically connected to the positive electrode of the battery pack, the first end of the photovoltaic panel A, the first end of the RLY-IN switch, the first end of the micro-inverter A, and the corresponding ends of the DC-DC converter B, respectively. The first end of the resistor RS1 is connected to the negative electrode of the battery pack, and the second end is electrically connected to the first end of the resistor RS2 and the first end of the resistor RS3 and is grounded, respectively. The second end of the resistor RS2 is electrically connected to the second end of the photovoltaic panel A and the first end of the SWITCH1 switch through the resistor RS6, and the second end of the SWITCH1 switch is electrically connected to the second end of the micro-inverter A through the resistor RS4;

[0015] The corresponding ends of the DC-DC converter B are also electrically connected to the first end of the photovoltaic panel B, the second end of the RLY-IN switch, and the first end of the micro-inverter B, respectively. The second end of the resistor RS3 is electrically connected to the second end of the photovoltaic panel B and the first end of the SWITCH2 switch via the resistor RS7, and the second end of the SWITCH2 switch is electrically connected to the second end of the micro-inverter B via the resistor RS5.

[0016] Preferably, the model of the MCU is set to GD32F303RET6.

[0017] Preferably, the auxiliary power supply module adopts a UCC28C45 chip, and a corresponding end of the UCC28C45 chip is electrically connected to the MCU.

[0018] Preferably, the corresponding end of the 485 communication module is also connected to the battery pack.

[0019] Preferably, the wireless module is set to one of a WIFI module, a Bluetooth module, and a 2G / 3G / 4G / 5G module, and the cloud platform is connected to a mobile phone app.

[0020] The technical solution of the utility model has the following beneficial effects:

[0021] The new balcony energy storage controller designed by the utility model solves the problem of intelligent power storage and power consumption in the balcony energy storage system, and can realize the goal of using a mobile phone APP to control the balcony energy storage system to operate in the best efficiency mode and smoothly coordinate photovoltaic power generation with household load power consumption.

[0022] PVHUB integrates power generation and consumption into itself by interconnecting with photovoltaic panels, micro inverters, and energy storage battery packs. Through the digitally controlled DC / DC bidirectional power circuit inside PVHUB, the direction and size of power flow can be controlled. PVHUB has a built-in MPPT function, which can maximize the goal of photovoltaic panels outputting power at maximum power capacity.

[0023] PVHUB has a built-in WIFI module that can be connected to the cloud platform. Users can view it in real time through the mobile APP, set the photovoltaic panel power generation, battery charging and discharging power, micro-inverter power generation, working mode, and trace the historical power generation and electricity consumption.

[0024] The utility model adopts a single battery charging and discharging connection, a dual photovoltaic panel connection, a dual-path micro-inverter connection, and a dual-path bidirectional DC / DC charging and discharging structure;

[0025] There is no DC / DC circuit between the photovoltaic panel and the micro-inverter path, that is, a unidirectional conduction power tube is set in the power path of the two, and a unidirectional conduction power tube is set on the battery and micro-inverter power path;

[0026] Control strategy:

[0027] PVHUB adds operational amplifier current and voltage sampling circuits to the topology of batteries, photovoltaic panels, micro-inverter power connections, and DC / DC circuits, which can adopt the parameters required by the control strategy in real time and send them to the MCU for calculation;

[0028] Whenever PVHUB restarts, the MCU uses the voltage sampling and current sampling circuits, as well as the DC / DC circuits, to detect whether there is an external micro-inverter connected, and the maximum possible output power of the micro-inverter;

[0029] When the micro inverter output of PVHUB is short-circuited, the photovoltaic panel input is overcurrent, or the battery is overcurrent, the MCU can detect in real time through voltage and current sampling and shut down the relevant power path in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a control schematic diagram of the utility model. DETAILED DESCRIPTION

[0031] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0032] Reference Figure 1 The utility model provides a novel balcony energy storage photovoltaic controller, including a PVHUB balcony energy storage photovoltaic controller 100, a micro inverter A, a micro inverter B, a battery pack 200, a photovoltaic panel A, and a photovoltaic panel B;

[0033] The corresponding ends of the PVHUB balcony energy storage photovoltaic controller 100 are respectively connected to the battery pack 200, micro inverter A and micro inverter B, photovoltaic panel A and photovoltaic panel B;

[0034] The PVHUB balcony energy storage photovoltaic controller 100 also includes a bidirectional DC / DC circuit A101, a bidirectional DC / DC circuit B102 connected to the corresponding end of the bidirectional DC / DC circuit A101, and a wireless module;

[0035] The first end of the bidirectional DC / DC circuit A101 is connected to the positive electrode of the battery pack 200, and the second end is respectively connected to the photovoltaic panel A and the micro inverter A; the first end of the bidirectional DC / DC circuit B102 is connected to the negative electrode of the battery pack 200, and the second end is respectively connected to the photovoltaic panel B and the micro inverter B; the wireless module is used to connect to an external cloud platform, and the cloud platform is connected to a mobile phone app. Users can view it in real time through the mobile phone APP, set the power generation of the photovoltaic panel, the battery charging and discharging power, the micro inverter power generation, the working mode, and trace the historical power generation and power consumption.

[0036] The battery pack is connected to the PVHUB balcony energy storage photovoltaic controller 100 via the battery power line and the signal line, the input power lines of the micro inverter A and micro inverter B are connected to the PVHUB balcony energy storage photovoltaic controller 100, and the output power lines of the micro inverter A and micro inverter B are connected to the power grid.

[0037] The PVHUB balcony energy storage photovoltaic controller 100 also includes MCU103, current sampling module 105, voltage sampling module 106, auxiliary power supply module 107, drive control module 108, 485 communication module 109; the corresponding end of the MCU103 is electrically connected to the corresponding end of the current sampling module 105, voltage sampling module 106, auxiliary power supply module 107, drive control module 108, 485 communication module 108, and wireless module. The model of the MCU 103 is set to GD32F303RET6, and the auxiliary power supply module is composed of UCC28C45 chip, LDO chip, and buck chip. The corresponding end of the UCC28C45 chip is electrically connected to the MCU, and the corresponding end of the 485 communication module is also connected to the battery pack. The wireless module is set to be one of a WIFI module 104, a Bluetooth module, and a 2G / 3G / 4G / 5G module. In the present application document, the WIFI module 104 is preferably used. In the PVHUB, in the power connection of the battery, photovoltaic panel, micro-inverter, and the topology of the DC / DC circuit, an operational amplifier current sampling module and a voltage sampling module are added, and the parameters required by the control strategy can be adopted in real time and sent to the MCU for calculation; whenever the PVHUB is restarted, the MCU uses the voltage sampling and current sampling circuits, as well as the DC / DC circuit to detect whether there is an external micro-inverter and the maximum possible output power of the micro-inverter; when the micro-inverter output of the PVHUB is short-circuited, the photovoltaic panel input is overcurrent, and the battery is overcurrent, the MCU can detect in real time through the voltage and current sampling current and close the relevant power path in time.

[0038] Further, the bidirectional DC / DC circuit A 101 includes a DC-DC converter A, a resistor RS2, a resistor RS4, a resistor RS6, a SWITCH1 switch, and an RLY-IN switch arranged in the DC-DC converter A;

[0039] The bidirectional DC / DC circuit B 102 includes a DC-DC converter B, a resistor RS3, a resistor RS1, a resistor RS7, a SWITCH2 switch, and a resistor RS5 arranged in the DC-DC converter B; the corresponding ends of the DC-DC converter A 101 are electrically connected to the positive electrode of the battery pack, the first end of the photovoltaic panel A, the first end of the RLY-IN switch, the first end of the micro inverter A, and the corresponding ends of the DC-DC converter B, respectively; the first end of the resistor RS1 is connected to the negative electrode of the battery pack, and the second end is electrically connected to the first end of the resistor RS2 and the first end of the resistor RS3 and is grounded, the second end of the resistor RS2 is electrically connected to the second end of the photovoltaic panel A and the first end of the SWITCH1 switch through the resistor RS6, and the second end of the SWITCH1 switch is electrically connected to the second end of the micro inverter A through the resistor RS4; the DC-DC converter B The corresponding end 102 is also electrically connected to the first end of the photovoltaic panel B, the second end of the RLY-IN switch, and the first end of the micro-inverter B respectively. The second end of the resistor RS3 is electrically connected to the second end of the photovoltaic panel B and the first end of the SWITCH2 switch via the resistor RS7. The second end of the SWITCH2 switch is electrically connected to the second end of the micro-inverter B via the resistor RS5.

[0040] The new balcony energy storage controller designed by the utility model solves the problem of intelligent power storage and power consumption in the balcony energy storage system, and can realize the goal of using a mobile phone APP to control the balcony energy storage system to operate in the best efficiency mode and smoothly coordinate photovoltaic power generation with household load power consumption.

[0041] The utility model PVHUB is interconnected with photovoltaic panels, micro inverters, and energy storage battery packs to integrate power generation and power consumption into itself. Through the digital control DC / DC bidirectional power circuit inside the PVHUB, the direction and size of power flow are controlled. The PVHUB has a built-in MPPT function, which can maximize the goal of outputting power at the maximum power capacity of the photovoltaic panel.

[0042] The utility model PVHUB has a built-in WIFI module and can be connected to the cloud platform. Users can view it in real time through the mobile phone APP, set the power generation of the photovoltaic panel, battery charging and discharging power, micro-inverter power generation, working mode, and trace the historical power generation and power consumption.

[0043] The utility model adopts a single battery charging and discharging connection, a dual photovoltaic panel connection, a dual-path micro-inverter connection, and a dual-path bidirectional DC / DC charging and discharging structure; there is no DC / DC circuit between the photovoltaic panel and the micro-inverter path, that is, a unidirectional conduction power tube is set in the power path of the two, and a unidirectional conduction power tube is set on the battery and the micro-inverter power path;

[0044] Control strategy:

[0045] PVHUB adds operational amplifier current and voltage sampling circuits to the topology of batteries, photovoltaic panels, micro-inverter power connections, and DC / DC circuits, which can adopt the parameters required by the control strategy in real time and send them to the MCU for calculation;

[0046] Whenever PVHUB restarts, the MCU uses the voltage sampling and current sampling circuits, as well as the DC / DC circuits, to detect whether there is an external micro-inverter connected, and the maximum possible output power of the micro-inverter;

[0047] When the micro inverter output of PVHUB is short-circuited, the photovoltaic panel input is overcurrent, or the battery is overcurrent, the MCU can detect in real time through voltage and current sampling and shut down the relevant power path in time.

[0048] Working principle of this utility model:

[0049] Simple discharge process:

[0050] The battery pack 200 is connected to the PVHUB balcony energy storage photovoltaic controller 100 through the battery power line and the signal line, the micro-inverter input power line is connected to the PVHUB balcony energy storage photovoltaic controller 100, and the micro-inverter output power line is connected to the grid;

[0051] Turn on the switch of PVHUB balcony energy storage photovoltaic controller 100, the battery pack 200 supplies power to the auxiliary power supply module 107, activate the MCU, 485 communication module 109, drive control module 108, current sampling module 105, voltage sampling module 106, WIFI module 104, connect to the WIFI module 104 of PVHUB balcony energy storage photovoltaic controller 100 through the mobile phone APP, and set the output to 1W;

[0052] The PVHUB balcony energy storage photovoltaic controller 100 will open the power switch supplied to the micro-inverter (micro-inverter A, micro-inverter B), and simulate the photovoltaic panel (photovoltaic panel A, photovoltaic panel B) output to the micro-inverter (micro-inverter A, micro-inverter B) through the bidirectional DC / DC circuit A and the bidirectional DC / DC circuit B. The micro-inverter (micro-inverter A, micro-inverter B) pursues the preset output according to the MPPT function. When the partial real-time sampling values ​​of the current sampling module 105 and the voltage sampling module 106 meet the preset power, the bidirectional DC / DC circuit A101 and the bidirectional DC / DC circuit B102 limit the input voltage and current of the micro-inverter (micro-inverter A, micro-inverter B), so that the micro-inverter (micro-inverter A, micro-inverter B) maintains the battery power extraction of the preset power and supplies it to the power grid;

[0053] MCU103 reports the battery pack 200 information, the bidirectional DC / DC circuit A101 and the bidirectional DC / DC circuit B102 information, and the input and output power of the PVHUB to the cloud platform through the WIFI module 104, and the user can view and set these parameters.

[0054] If the photovoltaic panels (photovoltaic panels A and photovoltaic panels B) have been connected to the PVHUB, the photovoltaic panels activate the MCU, sampling (current sampling module 105 and voltage sampling module 106), drive control module 108 and 485 communication module 109 of the PVHUB. At this time, the MCU determines the status of the micro-inverter and the photovoltaic panel through the circuits of the current sampling module 105 and the voltage sampling module 106. When it is determined that the photovoltaic panel is sufficient to meet the set output of the micro-inverter (micro-inverter A and micro-inverter B), the DC / DC circuit (bidirectional DC / DC circuit A101 and bidirectional DC / DC circuit B102) does not participate in the work, that is, the micro-inverter (micro-inverter A and micro-inverter B) is fully powered by the photovoltaic panels. When the photovoltaic panels (photovoltaic panel A, photovoltaic panel B) do not meet the power demand of the micro-inverter, the DC / DC circuit starts to work, that is, extracting battery power and outputting it in parallel with the photovoltaic panels (photovoltaic panel A, photovoltaic panel B) to the micro-inverter (micro-inverter A, micro-inverter B) to meet the set output power of the micro-inverter (micro-inverter A, micro-inverter B).

[0055] Simple charging process:

[0056] The battery pack 200 is connected to the PVHUB balcony energy storage photovoltaic controller 100 via the battery power line and the signal line, and the photovoltaic panels (photovoltaic panel A, photovoltaic panel B) are connected to the PVHUB balcony energy storage photovoltaic controller 100.

[0057] After the photovoltaic panel is connected to the PVHUB balcony energy storage photovoltaic controller 100, the auxiliary power supply module 107 in the PVHUB will be automatically activated, and then the MCU103, 485 communication module 109, drive control module 108, current sampling module 105, voltage sampling module 106, and WIFI module 104 will be activated.

[0058] MCU103 will first turn on the DC / DC circuit (bidirectional DC / DC circuit A101 and bidirectional DC / DC circuit B102) to test, and monitor whether there is an external micro-inverter (micro-inverter A, micro-inverter B) connected through the current sampling module 105 and the voltage sampling module 106. If not, the MPPT function is started to reverse charge the battery through the DC / DC circuit (bidirectional DC / DC circuit A101 and bidirectional DC / DC circuit B102). When the battery is full, the DC / DC circuit (bidirectional DC / DC circuit A101 and bidirectional DC / DC circuit B102) is automatically turned off.

[0059] Charging and discharging process:

[0060] The battery pack 200 is connected to the PVHUB balcony energy storage photovoltaic controller 100 via the battery power line and the signal line, and the photovoltaic panels (photovoltaic panel A, photovoltaic panel B) are connected to the PVHUB balcony energy storage photovoltaic controller 100.

[0061] After the photovoltaic panels (photovoltaic panel A, photovoltaic panel B) are connected to the PVHUB balcony energy storage photovoltaic controller 100, the auxiliary power supply module 107 in the PVHUB balcony energy storage photovoltaic controller 100 will be automatically activated, and then the MCU103, 485 communication module 109, drive control module 108, current sampling module 105, voltage sampling module 106, and WIFI module 104 will be activated.

[0062] MCU103 will first turn on the DC / DC circuit (bidirectional DC / DC circuit A101 and bidirectional DC / DC circuit B102) to test, and monitor whether there is an external micro-inverter (micro-inverter A, micro-inverter B) connected through the current sampling module 105 and the voltage sampling module 106. If not, the MPPT function is started to reverse charge the battery through the DC / DC circuit (bidirectional DC / DC circuit A101 and bidirectional DC / DC circuit B102). When the battery is full, the DC / DC circuit (bidirectional DC / DC circuit A101 and bidirectional DC / DC circuit B102) is automatically turned off. If an external micro-inverter (micro-inverter A, micro-inverter B) is connected, and the user sets the output power of the micro-inverter (micro-inverter A, micro-inverter B), and the power supply capacity of the photovoltaic panel is greater than the output power of the micro-inverter, at this time, the power path between the photovoltaic panel and the micro-inverter is opened. When the micro-inverter lowers the output voltage of the photovoltaic panel to within the preset range of the micro-inverter output power, the MCU will turn on the DC / DC circuit to allow the photovoltaic panel to charge the battery. At this time, the DC / DC circuit implements the MPPT strategy to maximize the efficiency of the photovoltaic panel.

[0063] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A new type of balcony energy storage photovoltaic controller, characterized in that: Including PVHUB balcony energy storage photovoltaic controller, micro inverter A, micro inverter B, battery pack, photovoltaic panel A, photovoltaic panel B; The corresponding ends of the PVHUB balcony energy storage photovoltaic controller are respectively connected to a battery pack, micro inverter A and micro inverter B, photovoltaic panel A and photovoltaic panel B; The PVHUB balcony energy storage photovoltaic controller also includes a bidirectional DC / DC circuit A, a bidirectional DC / DC circuit B connected to the corresponding end of the bidirectional DC / DC circuit A, and a wireless module; The first end of the bidirectional DC / DC circuit A is connected to the positive electrode of the battery pack, and the second end is connected to the photovoltaic panel A and the micro inverter A respectively; the first end of the bidirectional DC / DC circuit B is connected to the negative electrode of the battery pack, and the second end is connected to the photovoltaic panel B and the micro inverter B respectively; the wireless module is used to connect to an external cloud platform.

2. The novel balcony energy storage photovoltaic controller according to claim 1 is characterized in that: The battery pack is connected to the PVHUB balcony energy storage photovoltaic controller via the battery power line and the signal line, the input power lines of the micro inverter A and micro inverter B are connected to the PVHUB balcony energy storage photovoltaic controller, and the output power lines of the micro inverter A and micro inverter B are connected to the power grid.

3. The novel balcony energy storage photovoltaic controller according to claim 2 is characterized in that: The PVHUB balcony energy storage photovoltaic controller also includes an MCU, a current sampling module, a voltage sampling module, an auxiliary power supply module, a drive control module, and a 485 communication module; the corresponding end of the MCU is electrically connected to the corresponding end of the current sampling module, the voltage sampling module, the auxiliary power supply module, the drive control module, the 485 communication module, and the wireless module.

4. The novel balcony energy storage photovoltaic controller according to claim 1 is characterized in that: The bidirectional DC / DC circuit A includes a DC-DC converter A, a resistor RS2, a resistor RS4, a resistor RS6, a SWITCH1 switch, and an RLY-IN switch arranged in the DC-DC converter A; The bidirectional DC / DC circuit B includes a DC-DC converter B, a resistor RS3 arranged in the DC-DC converter B, a resistor RS1, a resistor RS7, a SWITCH2 switch, and a resistor RS5; The corresponding ends of the DC-DC converter A are electrically connected to the positive electrode of the battery pack, the first end of the photovoltaic panel A, the first end of the RLY-IN switch, the first end of the micro-inverter A, and the corresponding ends of the DC-DC converter B, respectively. The first end of the resistor RS1 is connected to the negative electrode of the battery pack, and the second end is electrically connected to the first end of the resistor RS2 and the first end of the resistor RS3 and is grounded, respectively. The second end of the resistor RS2 is electrically connected to the second end of the photovoltaic panel A and the first end of the SWITCH1 switch through the resistor RS6, and the second end of the SWITCH1 switch is electrically connected to the second end of the micro-inverter A through the resistor RS4; The corresponding ends of the DC-DC converter B are also electrically connected to the first end of the photovoltaic panel B, the second end of the RLY-IN switch, and the first end of the micro-inverter B, respectively. The second end of the resistor RS3 is electrically connected to the second end of the photovoltaic panel B and the first end of the SWITCH2 switch via the resistor RS7, and the second end of the SWITCH2 switch is electrically connected to the second end of the micro-inverter B via the resistor RS5.

5. The novel balcony energy storage photovoltaic controller according to claim 3 is characterized in that: The model of the MCU is set to GD32F303RET6.

6. The novel balcony energy storage photovoltaic controller according to claim 3 is characterized in that: The auxiliary power supply module adopts a UCC28C45 chip, and the corresponding end of the UCC28C45 chip is electrically connected to the MCU.

7. The novel balcony energy storage photovoltaic controller according to claim 3 is characterized in that: The corresponding end of the 485 communication module is also connected to the battery pack.

8. The novel balcony energy storage photovoltaic controller according to claim 3 is characterized in that: The wireless module is set to be one of a WIFI module, a Bluetooth module, and a 2G / 3G / 4G / 5G module, and the cloud platform is connected to a mobile phone app.

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