Marine photovoltaic energy storage intelligent control power supply system

Abstract

The utility model discloses a marine photovoltaic energy storage intelligent control power supply system, which comprises a photovoltaic system, a power supply inverter system, a battery system, an energy management system, a shipborne power generation system and a load, and is characterized in that an EMS (energy management system) in the energy management system is in communication connection with the photovoltaic system, the power supply inverter system and the battery system through a CAN (controller area network) bus; a positive electrode and a negative electrode of a photovoltaic panel in the photovoltaic system are connected with a PV + PV-port on the MPPT controller through a photovoltaic circuit breaker, a surge circuit breaker is connected with the photovoltaic circuit breaker in parallel and is grounded, and a BAT + BAT-port on the MPPT controller is connected with the power supply inverter system through a photovoltaic charging circuit breaker. An L1N1 port on an inverter in the power supply inverter system is connected with the positive electrode and the negative electrode of the photovoltaic charging circuit breaker, an L2N2 port on the inverter is connected with a load, and an L3N3 port on the inverter is connected with the shipborne power generation system; the positive electrode and the negative electrode of the battery system are connected with the L1N1 port of the inverter. The device can provide living power for the inland river transport ship, and is green, environment-friendly, low in price, convenient to use and safe.

Description

Technical Field

[0001] The utility model belongs to the technical fields of photovoltaic and energy storage, and particularly relates to a marine photovoltaic energy storage intelligent control power supply system. Background Art

[0002] For the domestic power consumption of refrigerators, air conditioners, entertainment, etc. on inland transport ships, when the ship is sailing, it is powered by the power generation system on the marine main drive engine; when the ship is in the stop operation conditions such as passing through the lock or loading and unloading goods, the main drive engine does not work, and users generally install a small diesel generator system to supply power to the electrical equipment on the ship. The biggest disadvantage of the small diesel generator is serious pollution and high power generation cost; in order to solve the pollution problem, the competent department has installed an onshore power system for the ship free of charge, and the onshore power is used to supply power to the ship after docking. However, the onshore power needs to be connected by a long cable, which is time-consuming and laborious, and few ships choose to use the onshore power. Content of the Utility Model

[0003] The purpose of the utility model is to provide a marine photovoltaic energy storage intelligent control power supply system, which can provide domestic power for inland transport ships, is green and environmentally friendly, cheap, convenient and safe to use.

[0004] To achieve the above purpose, the marine photovoltaic energy storage intelligent control power supply system of the utility model includes a photovoltaic system, a power inverter system, a battery system, an energy management system, a shipborne power generation system and a load. The energy management system includes an EMS and a remote monitoring module connected to the EMS. The EMS is communicatively connected to the photovoltaic system, the power inverter system and the battery system through a CAN bus;

[0005] The photovoltaic system includes photovoltaic panels, an MPPT controller, a surge circuit breaker, a photovoltaic circuit breaker and a photovoltaic charging circuit breaker. The positive and negative poles of the photovoltaic panels are connected to the PV+ and PV- ports on the MPPT controller through the photovoltaic circuit breaker. The surge circuit breaker is connected in parallel with the photovoltaic circuit breaker and grounded. The BAT+ and BAT- ports on the MPPT controller are connected to the power inverter system through the photovoltaic charging circuit breaker;

[0006] The power inverter system includes an inverter. The L1 and N1 ports on the inverter are correspondingly connected to the positive and negative poles of the photovoltaic charging circuit breaker. The L2 and N2 ports on the inverter are connected to the load. The L3 and N3 ports on the inverter are connected to the shipborne power generation system;

[0007] The positive and negative poles of the battery system are correspondingly connected to the L1 and N1 ports on the inverter.

[0008] As a further scheme of the utility model: The photovoltaic panels are provided with several groups, and form a whole photovoltaic panel through series and parallel connection. The positive and negative poles of the whole photovoltaic panel are respectively divided into two paths, one path is connected to the photovoltaic circuit breaker, and the other path is connected to the surge circuit breaker.

[0009] As a further solution of the present utility model: An alarm system is integrated on both the MPPT controller and the inverter, and the alarm system includes a buzzer and a flashing light.

[0010] As a further solution of the present utility model: The battery system includes multiple battery packs connected in series or parallel. The battery module of each battery pack is composed of 1 parallel and 8 series lithium iron phosphate batteries, and each battery pack is integrated with a PB and a heating module.

[0011] As a further solution of the present utility model: The CAN bus includes a CANH line and a CANL line. The EMS is communicatively connected to the MPPT controller, the inverter, and each battery pack through the CANH line and the CANL line.

[0012] As a further solution of the present utility model: The on-board power generation system includes an on-board generator, and the on-board generator is connected to the L3N3 port on the inverter through an AC charging circuit breaker.

[0013] As a further solution of the present utility model: The load is a 220V load, which is the on-board living power supply. The 220V load is connected to the L2N2 port on the inverter through a load circuit breaker.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1) The EMS monitors the parameters of each component in real time and controls the output status in real time; at the same time, the remote monitoring terminal can transmit the system parameters to the user, which is convenient for mastering the system status; the use and operation are convenient, and each circuit breaker will automatically trip under overvoltage and overcurrent conditions, which can effectively ensure the safety of electrical equipment and ensure the safe use of the system;

[0016] 2) The use of photovoltaic power generation is green and environmentally friendly, avoiding the pollution caused by the current use of small diesel generators for power generation, and it is also cheap;

[0017] 3) The battery system is composed of multiple battery packs connected in series or parallel. The battery module of each battery pack is composed of 1 parallel and 8 series lithium iron phosphate batteries, which can be carried by hand, and its stored power can meet the electricity demand at night or in rainy weather, realizing full-time power supply. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the marine photovoltaic energy storage intelligent control power system of the present utility model. Detailed Embodiments

[0019] The present utility model will be further described below with reference to the drawings.

[0020] Such as Figure 1As shown, the marine photovoltaic energy storage intelligent control power system includes a photovoltaic system, a power inverter system, a battery system, an energy management system, a shipborne power generation system, and a load. The energy management system includes an EMS (Energy Management Module) and a remote monitoring module connected to the EMS. The remote monitoring module can transmit system parameters to the user's mobile phone or the background monitoring module in real time. The EMS communicates with the photovoltaic system, the power inverter system, and the battery system through the CAN bus and sends control commands to each system;

[0021] The photovoltaic system includes photovoltaic panels, an MPPT (Maximum Power Point Tracking) controller, a surge breaker, a photovoltaic breaker, and a photovoltaic charging breaker. The positive and negative poles of the photovoltaic panels are connected to the PV+ and PV- ports on the MPPT controller through the photovoltaic breaker. The surge breaker is connected in parallel with the photovoltaic breaker and grounded. The BAT+ and BAT- ports on the MPPT controller are connected to the power inverter system through the photovoltaic charging breaker;

[0022] The power inverter system includes an inverter. The L1N1 port on the inverter is correspondingly connected to the positive and negative poles of the photovoltaic charging breaker. The L2N2 port on the inverter is connected to the load. The L3N3 port on the inverter is connected to the shipborne power generation system;

[0023] The positive and negative poles of the battery system are correspondingly connected to the L1N1 port on the inverter.

[0024] Further, there are several groups of photovoltaic panels, which form an overall photovoltaic panel through series and parallel connections. The positive and negative poles of the overall photovoltaic panel are respectively divided into two paths. One path is connected to the photovoltaic breaker, and the other path is connected to the surge breaker. Multiple photovoltaic panels form a green power generation system through series and parallel connections. During thunderstorm weather, the surge breaker protects the system safety. When the voltage is abnormal, the circuit breakers on the relevant lines will trip to play a protective role. At the same time, each circuit breaker can also be manually disconnected or closed, Figure 1 The overall photovoltaic panel shown is 3 in series and 2 in parallel.

[0025] To improve the use safety, further, an alarm system is integrated on both the MPPT controller and the inverter. The alarm system includes a buzzer sound and a flashing light. When a fault is detected, it beeps and flashes continuously to remind the user to disconnect the circuit breaker to ensure system safety.

[0026] Further, the battery system includes multiple battery packs connected in series or parallel, Figure 1 In it, two battery packs are connected in parallel. The battery module of each battery pack consists of 1 in parallel and 8 in series lithium iron phosphate battery cells. The weight of the battery pack is controlled within the range that can be easily carried by hand. And each battery pack is integrated with a PB (Protection Board) and a heating module. The heating module adjusts the temperature control of the battery module through a heating film.

[0027] Further, the CAN bus includes a CANH line and a CANL line. The EMS is communicatively connected to the MPPT controller, the inverter, and each battery pack through the CANH line and the CANL line. The EMS sends control commands to each module through the CAN bus.

[0028] Further, the on-board power generation system includes an on-board generator. The on-board generator is connected to the L3N3 port on the inverter through an AC charging circuit breaker. The on-board generator is the power generation system on the main drive engine of the ship. The AC charging circuit breaker is used to protect the circuit where it is located and automatically trips when the voltage is abnormal, and can also be manually disconnected and closed.

[0029] Further, the load is a 220V load, which is the on-board living power supply, such as the power consumption of electrical appliances such as refrigerators, air conditioners, and TVs. The 220V load is connected to the L2N2 port on the inverter through a load circuit breaker. The load circuit breaker is used to protect the safety of the circuit where it is located.

[0030] When the present utility model is in specific use, after the system connection is completed, the system is in a working state. The power generated by the photovoltaic panel is input to the L1N1 port of the inverter through the MPPT controller. The positive and negative poles of the battery system are also connected to the L1N1 port of the MPPT. After being boosted to 220V alternating current by the inverter, it supplies power to the load through the L2N2 port; the on-board power generation system is connected to the L3N3 port of the inverter. When it is rainy and the ship is in a driving state, the on-board power generation system can charge the battery system.

[0031] When the system is overvoltage or overcurrent, the circuit breaker on the corresponding circuit will automatically trip to protect the electrical equipment, and can also be manually disconnected and closed.

[0032] The EMS is communicatively connected to each module through the CAN bus, collects the status parameters of each module, and sends control instructions to each control module. The remote monitoring terminal is connected to the EMS and can transmit the system parameters to the user's mobile phone and the background monitoring module in real time.

Claims

1. Marine photovoltaic energy storage intelligent control power supply system, comprising a photovoltaic system, a power inverter system, a battery system, an energy management system, an on-board power generation system and a load, characterized in that, The described energy management system includes an EMS and a remote monitoring module connected to the EMS. The EMS is communicatively connected to the photovoltaic system, the power inverter system, and the battery system via a CAN bus; The photovoltaic system includes photovoltaic panels, an MPPT controller, a surge circuit breaker, a photovoltaic circuit breaker, and a photovoltaic charging circuit breaker. The positive and negative poles of the photovoltaic panels are connected to the PV+ and PV- ports on the MPPT controller via the photovoltaic circuit breaker. The surge circuit breaker is connected in parallel with the photovoltaic circuit breaker and grounded. The BAT+ and BAT- ports on the MPPT controller are connected to the power inverter system via the photovoltaic charging circuit breaker; The power inverter system includes an inverter. The L1N1 port on the inverter is correspondingly connected to the positive and negative poles of the photovoltaic charging circuit breaker. The L2N2 port on the inverter is connected to the load. The L3N3 port on the inverter is connected to the on-board power generation system; The positive and negative poles of the battery system are correspondingly connected to the L1N1 port on the inverter.

2. The marine photovoltaic energy storage intelligent control power supply system according to claim 1, characterized in that, The photovoltaic panels are provided in several groups and form an overall photovoltaic panel through series and parallel connections. The positive and negative poles of the overall photovoltaic panel are respectively divided into two paths, one path is connected to the photovoltaic circuit breaker, and the other path is connected to the surge circuit breaker.

3. The marine photovoltaic energy storage intelligent control power supply system according to claim 1, characterized in that, An alarm system is integrated on both the MPPT controller and the inverter. The alarm system includes a buzzer sound and a flashing light.

4. The marine photovoltaic energy storage intelligent control power supply system according to claim 1, characterized in that, The battery system includes a plurality of battery packs connected in series or parallel. The battery modules of each battery pack are composed of 1 parallel and 8 series lithium iron phosphate battery cells, and each battery pack is integrated with a PB and a heating module.

5. The marine photovoltaic energy storage intelligent control power supply system according to claim 4, wherein The CAN bus includes a CANH line and a CANL line. The EMS is communicatively connected to the MPPT controller, the inverter, and each battery pack via the CANH line and the CANL line.

6. The marine photovoltaic energy storage intelligent control power supply system according to any one of claims 1-5, characterized in that, The on-board power generation system includes an on-board generator. The on-board generator is connected to the L3N3 port on the inverter via an AC charging circuit breaker.

7. The marine photovoltaic energy storage intelligent control power supply system according to any one of claims 1-5, characterized in that, The load is a 220V load, which is the on-board domestic power supply. The 220V load is connected to the L2N2 port on the inverter via a load circuit breaker.

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