Optical storage and charging cabinet type all-in-one machine based on modular design

Abstract

The utility model provides an optical storage and charging cabinet type all-in-one machine based on modular design, which comprises a photovoltaic module capable of converting changed direct-current voltage generated by an external photovoltaic module into stable direct-current voltage; the energy storage module is connected with the photovoltaic module, the charging module and the power grid, the energy storage module can store electric energy from the photovoltaic module and the power grid, the energy storage module can supply power to the charging module, and the charging module can charge the new energy vehicle through a charging gun; the energy management system is connected with the photovoltaic module, the energy storage module and the charging module, the energy management system can control the working states of the photovoltaic module, the energy storage module and the charging module, the charging and discharging efficiency of the battery and the charging efficiency of the new energy automobile are improved, and the product is more reliable and safer.

Description

Technical Field

[0001] The utility model relates to the field of power supply equipment, in particular to a photovoltaic storage and charging cabinet-type integrated machine based on modular design. Background Art

[0002] With the continuous advancement of science and technology, industrial and commercial energy storage technology has developed rapidly. Energy storage technologies such as battery energy storage technology, supercapacitor energy storage technology, and flywheel energy storage technology are constantly innovating, and key indicators such as energy density, power density, and cycle life have been significantly improved. At the same time, breakthroughs have been made in the integrated optimization technology of energy storage systems, which has further improved the efficiency and reliability of energy storage systems. The application areas of industrial and commercial energy storage technology are constantly expanding, involving multiple fields such as energy, transportation, industry, and cities. In the energy field, industrial and commercial energy storage is mainly used for renewable energy grid connection, distributed energy systems, microgrids, etc.; in the transportation field, it is mainly used in electric buses, subways, railways, ships and aircraft; in the industrial field, it is mainly used in intelligent manufacturing and industrial automation; in the urban field, it is mainly used in intelligent transportation, smart homes, and urban infrastructure construction.

[0003] Currently, existing integrated photovoltaic storage and charging cabinets lack emergency response to energy outages caused by grid failures, and also lack intelligent scheduling when electricity prices fluctuate. Utility Model Content

[0004] The purpose of this utility model is to provide a photovoltaic storage and charging cabinet-type integrated machine based on modular design to achieve efficient energy supply. It can provide emergency power supply to charging piles through photovoltaics or energy storage when the power grid is interrupted, or provide power to important AC loads.

[0005] In order to achieve the above-mentioned objectives, the present invention provides the following technical solutions: a photovoltaic storage and charging cabinet-type integrated machine based on modular design, comprising: a photovoltaic module, which can convert the changing DC voltage generated by the external photovoltaic component into a stable DC voltage; an energy storage module and a charging module, wherein the energy storage module is connected to the photovoltaic module, the charging module and the power grid, the energy storage module can store electrical energy from the photovoltaic module and the power grid, the energy storage module can supply power to the charging module, and the charging module can charge new energy vehicles through a charging gun; an energy management system, wherein the energy management system is connected to the photovoltaic module, the energy storage module and the charging module, and the energy management system can control the working status of the photovoltaic module, the energy storage module and the charging module.

[0006] Furthermore, it also includes a cabinet; the photovoltaic module, the energy storage module, the charging module and the energy management system are all located in the cabinet.

[0007] Furthermore, the photovoltaic module includes an MPPT module, the MPPT module is integrated with a first DC / DC module, the MPPT module is connected to the external photovoltaic component, and the MPPT module can convert the changing DC voltage generated by the external photovoltaic component into a stable DC voltage.

[0008] Furthermore, the energy storage module includes a battery cluster, a high-voltage box and an energy storage converter. The battery cluster is connected to the high-voltage box and the energy storage converter. The power grid is connected to the energy storage converter. The power grid can supply power to the battery cluster through the energy storage converter.

[0009] Furthermore, the charging module includes a second DC / DC module, a charging main control board and a power control board. The second DC / DC module is connected to the charging main control board, the power control board and the charging gun. The energy management module is connected to the charging main control board and the power control board. The charging main control board can control the working state of the second DC / DC module, and the power control board can control the power of the second DC / DC module.

[0010] Furthermore, the energy storage converter is connected to the photovoltaic module and the charging module via a common DC bus.

[0011] Furthermore, it also includes fire-fighting equipment, air conditioning and touch screen panel. The fire-fighting equipment is arranged in the cabinet, and the air conditioning and the touch screen panel are both arranged on the outer wall of the cabinet. The touch screen panel is communicatively connected to the energy management system, and the air conditioning is connected to the energy storage module.

[0012] Furthermore, the charging gun is a DC charging gun.

[0013] Furthermore, the energy storage module further includes a battery management system, which is connected to the battery cluster and can manage the operating status of the battery cluster.

[0014] Analysis shows that the utility model discloses a photovoltaic storage and charging cabinet-type integrated machine based on modular design. The photovoltaic storage and charging cabinet-type integrated machine provided by the utility model is particularly suitable for application scenarios such as industrial and commercial parks, on-grid / off-grid photovoltaic storage, on-grid / off-grid storage and charging stations, microgrids, peak shaving and valley filling, and backup power supplies. It has the advantages of small footprint, flexible application, strong adaptability, easy installation and maintenance, and a high degree of system integration. It also eliminates the intermediate current and voltage conversion link, improves the battery charging and discharging efficiency and the charging efficiency of new energy vehicles, and makes the product more reliable and safe. The combination of the energy storage converter and the charging gun in the energy storage module can be well applied to new energy vehicles of various capacities, meeting the safe and reliable charging requirements of new energy vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting part of this application are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention.

[0016] Figure 1 A structural block diagram of an embodiment of the present invention. DETAILED DESCRIPTION

[0017] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with examples. Each example is provided by way of explanation of the present invention and does not limit the present invention. In fact, it will be clear to those skilled in the art that modifications and variations can be made in the present invention without departing from the scope or spirit of the present invention. For example, a feature shown or described as part of one embodiment can be used in another embodiment to produce yet another embodiment. Therefore, it is intended that the present invention encompass such modifications and variations as come within the scope of the appended claims and their equivalents.

[0018] In the description of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like to indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention. The terms "connected", "connected", and "set" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components; they can be wired electrical connections, radio connections, or wireless communication signal connections. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0019] One or more examples of the present invention are shown in the accompanying drawings. The detailed description uses numbers and letters to refer to features in the drawings. Like or similar numbers in the drawings and the description have been used to refer to like or similar parts of the present invention. As used herein, the terms "first," "second," "third," and "fourth" are used interchangeably to distinguish one component from another and are not intended to indicate the position or importance of individual components.

[0020] like Figure 1As shown, according to an embodiment of the present invention, a photovoltaic storage and charging cabinet-type integrated machine based on modular design is provided, including: a photovoltaic module, which can convert the changing DC voltage generated by the external photovoltaic component into a stable DC voltage, an energy storage module and a charging module, the energy storage module is connected to the photovoltaic module, the charging module and the power grid, the energy storage module can store the electrical energy from the photovoltaic module and the power grid, the energy storage module can supply power to the charging module, the charging gun is connected to the charging module through a cable, and the charging module can charge the new energy vehicle through the charging gun; an energy management system, the energy management system is connected to the photovoltaic module, the energy storage module and the charging module, the energy management system can control the working status of the photovoltaic module, the energy storage module and the charging module, the energy management module can control the charging module to charge the new energy vehicle through the charging gun, and the charging gun is a DC charging gun.

[0021] The photovoltaic module includes an MPPT module combined into a certain power specification. The MPPT module is integrated with a first DC / DC module. The MPPT module is connected to the external photovoltaic component. The first DC / DC module in the MPPT module can convert the changing DC voltage generated by the external photovoltaic component into a stable DC voltage; the power generated by the photovoltaic component is first used to power the charging module (charging pile), and then charge the battery cluster. The remaining electricity that cannot be absorbed is inverted into AC power through the energy storage inverter and sent to the power grid. In areas where surplus electricity is not allowed to be connected to the grid, the energy management system is set to automatically reduce the power of the MPPT module and the first DC / DC module to maintain the power consumption of the photovoltaic storage and charging system itself.

[0022] The charging gun is typically installed on the left side of the energy storage module and connected to the energy storage converter via a cable. The charging gun extends from the opening in the housing and is fixedly connected to a waterproof assembly for waterproofing. The waterproof assembly consists of a waterproof trough and a sealed storage box. The trough contains a waterproof cover that connects to the waterproof storage box. The waterproof storage box consists of a waterproof plug, which is connected to the rotating assembly, which includes a rotating shaft.

[0023] The charging module includes a second DC / DC module, a charging main control board and a power control board. The second DC / DC module is connected to the charging main control board, the power control board and the charging gun. The energy management module is connected to the charging main control board and the power control board. The charging main control board can control the working status of the second DC / DC module, and the power control board can control the charging power of the second DC / DC module. At the same time, it receives relevant data information related to charging, such as starting charging, charging completion, standby, card swiping, recharging, etc. The power control board controls the charging power of the second DC / DC module after charging starts, and stops power output after charging is completed to ensure safe and reliable charging.

[0024] The energy storage module includes a battery cluster, a high-voltage box and an energy storage converter. The battery cluster is connected to the energy storage converter through the high-voltage box, and the power grid is connected to the energy storage converter. The power grid can supply power to the battery cluster through the energy storage converter.

[0025] The energy storage inverter is connected to the photovoltaic module and charging module via a common DC bus. The energy management module can control whether the charging module is powering the charging gun. A common DC bus refers to a system that aggregates multiple DC power sources onto a common DC bus and then distributes them to various load devices via feeders to meet the power supply needs of different devices. The energy storage module also includes a battery management system, which is connected to the battery cluster and can manage the operating status of the battery cluster. The battery cluster consists of multiple battery packs connected in series and is monitored and managed by the battery management system (BMS) to ensure the safe operation of the batteries. The energy management system communicates with the BMS and intervenes in the charge and discharge status before the BMS alarm is triggered to ensure the safe operation of the batteries. The BMS includes components such as voltage detection, current detection, temperature detection, and DC contactors.

[0026] The energy management module is connected to the MPPT module, energy storage converter, charging main control board and power control board. The energy management module can control the MPPT module, energy storage converter, charging main control board and power control board.

[0027] The energy management module connects to other structures via a communication interface. This communication interface uses either a dedicated or general-purpose protocol, such as Modbus or CAN. Data from the energy management module can be transmitted wirelessly or wired to the front-end or back-end systems where the relevant data needs to be viewed or recorded. Through this interface, the energy management module can obtain real-time operating data and status information from devices such as the MPPT module, the first DC / DC module, the energy storage inverter, the charging control board, the power control board, and the air conditioner. It can also send control commands to these devices.

[0028] The energy management module typically includes a data acquisition and monitoring system, a power generation dispatch control system, and a power safety assessment and analysis system. The energy management module controls the operation of the energy storage inverter, ensuring it operates under appropriate conditions and ensuring power quality and power supply safety. The data acquisition and monitoring system is primarily responsible for collecting various grid operating data, such as voltage, current, frequency, and power, in real time, and processing and displaying this data to provide real-time visibility into the operating status of each device. The power generation dispatch control system enables automatic power generation control and economic operation scheduling for the grid. Automatic power generation control automatically adjusts the power generation of the PV-storage-charging system to meet the system's load requirements; while economic operation dispatch control optimizes the operating mode of the PV-storage-charging system based on the grid's real-time operating status and economic requirements, ensuring safe and reasonable operation of the PV-storage-charging system and generating certain economic benefits.

[0029] The energy management module controls the convergence of multiple DC power sources onto a common DC bus, which is then distributed to various load devices via feeders to meet the power supply needs of different devices. In a common DC system, the DC power source voltage must remain consistent to ensure system stability and reliability. During off-peak hours, the energy storage module can be charged from the external public grid; during peak hours, the photovoltaic module can be used to provide charging services for new energy vehicles. If the photovoltaic module's power generation is insufficient, the energy storage module can be controlled to provide additional power. If the energy storage module's power is insufficient, power is drawn from both the grid and the energy storage module to ensure normal operation while meeting the needs of new energy vehicles.

[0030] The photovoltaic module, energy storage module, charging module and energy management system are all located in the cabinet, the fire-fighting equipment is installed in the cabinet, the air conditioner and touch screen panel are both installed on the outer wall of the cabinet, the touch screen panel is communicated with the energy management system, and the air conditioner is connected to the energy storage module. Under the action of the air-conditioning equipment, the temperature inside the cabinet can be maintained to ensure the safe and reliable operation of the equipment. The touch screen can realize some simple control of the energy management system, so that the user can operate the energy management system through the touch screen.

[0031] Compared with existing technologies, the integrated photovoltaic storage and charging cabinet provided by this utility model is particularly suitable for application scenarios such as industrial and commercial parks, on-grid / off-grid photovoltaic storage, on-grid / off-grid storage and charging stations, microgrids, peak shaving and valley filling, and backup power supplies. It has the advantages of a small footprint, flexible application, strong adaptability, easy installation and maintenance, and a high degree of system integration. It also eliminates the intermediate current and voltage conversion link, improving the power supply efficiency when charging new energy vehicles, making the product safer and more reliable. The combination of the energy storage inverter and charging gun in the energy storage module is well suited for new energy vehicles of various capacities, ensuring safe and reliable charging of new energy vehicles.

[0032] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A modular design of an integrated optical storage and charging cabinet, characterized in that: include: A photovoltaic module capable of converting a varying DC voltage generated by an external photovoltaic assembly into a stable DC voltage; An energy storage module and a charging module, wherein the energy storage module is connected to the photovoltaic module, the charging module, and the power grid. The energy storage module can store electrical energy from the photovoltaic module and the power grid, and can supply power to the charging module. The charging module can charge the new energy vehicle via a charging gun; an energy management system, the energy management system being connected to the photovoltaic module, the energy storage module, and the charging module, and capable of controlling the operating states of the photovoltaic module, the energy storage module, and the charging module; It also includes a cabinet; the photovoltaic module, the energy storage module, the charging module and the energy management system are all located in the cabinet; The energy storage module includes a battery cluster, a high-voltage box and an energy storage converter. The battery cluster is connected to the energy storage converter via the high-voltage box, and the power grid is connected to the energy storage converter. The power grid can supply power to the battery cluster and the charging module through the energy storage converter. It also includes fire-fighting equipment, air conditioning and a touch screen panel. The fire-fighting equipment is arranged in the cabinet, and the air conditioning and the touch screen panel are both arranged on the outer wall of the cabinet. The touch screen panel is communicatively connected to the energy management system, and the air conditioning is connected to the energy storage module.

2. The modular design-based integrated photovoltaic storage and charging cabinet according to claim 1 is characterized in that: The photovoltaic module includes an MPPT module, the MPPT module is integrated with a first DC / DC module, the MPPT module is connected to the external photovoltaic component, and the MPPT module can convert the changing DC voltage generated by the external photovoltaic component into a stable DC voltage.

3. The modular design-based integrated optical storage and charging cabinet according to claim 2, characterized in that: The charging module includes a second DC / DC module, a charging main control board and a power control board. The second DC / DC module is connected to the charging main control board, the power control board and the charging gun. The energy management system is connected to the charging main control board and the power control board. The charging main control board can control the working state of the second DC / DC module, and the power control board can control the charging power of the second DC / DC module.

4. The modular design-based integrated optical storage and charging cabinet according to claim 2, characterized in that: The energy storage converter is connected to both the photovoltaic module and the charging module via a common DC bus.

5. The modular design-based integrated photovoltaic storage and charging cabinet according to claim 1, characterized in that: The charging gun is a DC charging gun.

6. The modular design-based integrated optical storage and charging cabinet according to claim 2, characterized in that: The energy storage module further includes a battery management system, which is connected to the battery cluster and can manage the operating status of the battery cluster.

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