Split type outdoor energy storage system communication architecture

Abstract

The utility model discloses a split type outdoor energy storage system communication architecture. The split type outdoor energy storage system communication architecture comprises an EMS data collector, an optical storage all-in-one machine, a three-stage BMS and a plurality of battery clusters. Each battery cluster is formed by connecting a plurality of battery boxes and a high-voltage box in series, the second-stage BMS and the third-stage BMS in the high-voltage box in each battery cluster communicate through a CAN bus, and the third-stage BMS is in communication connection with the optical storage all-in-one machine through the CAN bus; the optical storage all-in-one machine comprises a DCDC module and a DCAC module, wherein the DCDC module and the DCAC module are in communication connection through a CAN bus. And the EMS data acquisition unit is in communication connection with the optical storage all-in-one machine and the three-stage BMS by using a ModBus TCP IP communication protocol through an Ethernet mode. Through the architecture design of the invention, the problems of micro-grid energy storage and split type outdoor energy storage system communication in an existing non-power area are solved, an access entrance for cloud and intelligent terminal access is provided, cloud data storage is realized, and auxiliary equipment is also included in a communication structure.

Description

TECHNICAL FIELD

[0001] The utility model belongs to new energy storage field especially relates to a split type outdoor energy storage system communication architecture. BACKGROUND

[0002] Energy storage system refers to the energy in the form of electric energy, through different media storage, when needed, release a kind of system again.Energy storage device composed of energy storage element and grid access device composed of power electronic device become two parts of energy storage system.

[0003] Energy storage device realizes the storage, release or rapid power exchange of energy.Grid access device realizes the energy two-way transmission and conversion between energy storage device and grid, realizes electric power peak shaving, energy optimization, improves power supply reliability and power system stability and other functions.

[0004] With the more and more widely used of microgrid energy storage in unpowered areas, split type single cabinet equipment has moderate capacity, small volume, convenient transportation.The system structure is that Pack battery is connected in series to form a cabinet as battery cluster, multiple battery clusters are connected in parallel on the DC side, and are connected into light storage integrated machine to convert into alternating current, and then are connected into local pole line for power supply after various distribution devices.Split type single cabinet equipment has moderate capacity, small volume, convenient transportation, compact structure, high efficiency and other characteristics, and is easy to realize centralized deployment and optimization of small and medium scale energy, plays an important role in power station using renewable energy in unpowered areas, so the research on communication architecture is particularly important. UTILITY MODEL CONTENT

[0005] The utility model aims at: in order to overcome prior art problems, disclose a split type outdoor energy storage system communication architecture, solve the communication problem of existing microgrid energy storage in unpowered areas, split type outdoor energy storage system.

[0006] The utility model achieves the purpose by the following technical scheme:

[0007] A split type outdoor energy storage system communication architecture, the split type outdoor energy storage system communication architecture includes: EMS data collector, light storage integrated machine, three levels BMS and several battery clusters;

[0008] The battery cluster is connected in series by several battery boxes and 1 high voltage box, and the secondary BMS in the high voltage box in each battery cluster communicates with the three levels BMS through CAN bus, and the three levels BMS is connected with the light storage integrated machine in communication through CAN bus;

[0009] The light storage integrated machine includes DCDC module and DCAC module, wherein the DCDC module and DCAC module are connected in communication through CAN bus;

[0010] The EMS data collector is connected with the optical storage all-in-one machine and the three-level BMS through Ethernet using ModBus TCPIP communication protocol.

[0011] According to a preferred embodiment, the primary BMS of each battery box in the battery cluster is connected to the secondary BMS in the high-voltage box of the battery cluster through daisy chain communication.

[0012] According to a preferred embodiment, each battery cluster is arranged in parallel in each cabinet.

[0013] According to a preferred embodiment, each cabinet is provided with a fire extinguishing unit and an air conditioning unit, and each fire extinguishing unit and air conditioning unit is connected with the EMS controller through RS485 using ModBus RTU communication protocol.

[0014] According to a preferred embodiment, the split outdoor energy storage system communication architecture further comprises a DIDO module, and the EMS data collector is connected with the DIDO module through RS485 using ModBus RTU communication protocol.

[0015] According to a preferred embodiment, the EMS data collector is connected with the cloud through Ethernet.

[0016] The foregoing main scheme of the utility model and each further selected scheme thereof can be freely combined to form multiple schemes, all of which are the schemes that can be adopted and claimed by the utility model. Those skilled in the art can understand that there are multiple combinations according to the prior art and common knowledge after understanding the scheme of the utility model, all of which are the technical schemes claimed by the utility model, and are not listed exhaustively here.

[0017] The utility model has the beneficial effects that:

[0018] The architecture design solves the communication problems of the micro-grid energy storage and the split outdoor energy storage system in the existing non-electricity area, provides an access for the cloud and the intelligent terminal, stores the cloud data, and also includes auxiliary equipment such as air conditioners, DIDO modules, fire extinguishing units and temperature control units and other input and output devices in the communication structure. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a schematic diagram of the split outdoor energy storage system communication architecture of the utility model;

[0020] Figure 2 is a main loop system structure diagram of the split outdoor energy storage system of the utility model. DETAILED DESCRIPTION

[0021] The embodiments of the present application will be described in detail below with specific examples. Other advantages and effects of the present application can be easily understood by those skilled in the art from the disclosure of the present application. The present application can also be implemented or applied in other different specific embodiments, and various modifications or changes can be made to the details in the present application based on different views and applications without departing from the spirit of the present application. It should be noted that the following examples and features in the examples can be combined with each other without conflict.

[0022] It should be noted that similar reference numerals and letters refer to similar items throughout the accompanying drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings. In addition, the terms "first", "second", "third", and the like are used only to distinguish descriptions, and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present application, it should be noted that, unless otherwise specifically defined and limited, the terms "providing", "installing", "connecting", "connecting" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] In addition, the present application points out that, in the present application, if the specific structures, connection relationships, position relationships, power source relationships, etc. are not specifically written, the structures, connection relationships, position relationships, power source relationships, etc. involved in the present application can be known by those skilled in the art without creative labor on the basis of the prior art.

[0025] Example 1

[0026] Reference Figure 1 As shown in the figure, a split type outdoor energy storage system communication architecture is shown, which comprises an EMS data collector, an optical storage all-in-one machine, a three-level BMS, a DIDO module and a plurality of battery clusters.

[0027] Among them, the battery cluster is composed of a plurality of battery boxes and one high-voltage box in series, and the secondary BMS in the high-voltage box in each battery cluster is Figure 1The middle BCU communicates with the three-level BMS through a CAN bus, the three-level BMS is connected with the light storage integrated machine through the CAN bus, and the first-level BMS (that is, the BMU used for battery box control) of each battery box in the battery cluster is connected with the second-level BMS in the high-voltage box in the battery cluster through a daisy chain communication mode.

[0028] The EMS data collector is connected with the light storage integrated machine and the three-level BMS through an Ethernet mode using a ModBus TCPIP communication protocol.

[0029] Preferably, the split outdoor energy storage system communication architecture further comprises a DIDO module, and the EMS data collector and the DIDO module are connected through an RS485 mode using a ModBus RTU communication protocol.

[0030] Specifically, the DIDO module mainly collects some dry contact and wet contact signal alarms (such as water immersion sensor signals, air conditioner fault signals, UPS signals, fire first, second and third level signals, direct current side bus switch signals, alternating current and direct current surge lightning protection grounding signals, emergency stop signals and other device signal inputs), and the output signals of the DIDO module are used to drive some local relay micro circuit breakers or other device power off or operate other actions, and the above are all communicated with the EMS data collector to upload information and interact data through an RS485 mode using a ModBus RTU communication protocol.

[0031] Preferably, each battery cluster is arranged in a parallel mode in each cabinet.

[0032] Further, each cabinet is respectively provided with a fire extinguishing unit and an air conditioning unit, and each fire extinguishing unit and air conditioning unit is connected with an EMS controller through an RS485 mode using a ModBus RTU communication protocol.

[0033] Preferably, the light storage integrated machine comprises a DCDC module and a DCAC module, wherein the DCDC module and the DCAC module are connected through a CAN bus.

[0034] Preferably, the EMS data collector is connected with the cloud through an Ethernet, including but not limited to through an external network cable or 4G, 5G wireless routing to realize data cloud uploading.

[0035] Through the communication architecture provided by the utility model, the existing micro-grid energy storage and split outdoor energy storage system communication structure in non-electricity areas are solved, an entrance for cloud access and cloud data storage are provided, and auxiliary equipment, such as an air conditioning unit, a fire extinguishing unit, an UPS fault signal and other input and output devices, are also included in the communication structure.

[0036] Reference Figure 2 As shown in the figure, the main circuit system structure diagram of a split outdoor energy storage system is shown, a plurality of series connected battery boxes and high voltage boxes are connected in series to form a battery cluster, i.e. a cabinet, and different battery cluster main circuits are connected in parallel to form a plurality of battery clusters.

[0037] A plurality of battery clusters are arranged in different cabinets, and are arranged in a split manner, connected to the battery side of the light storage integrated machine through DC parallel connection, i.e. the DCAC direct current side and the DCDC output side, and the DCDC input side is connected to photovoltaic. The DCAC alternating current side can be connected to the power grid and the load, and the internal AC power supply of the system is taken from the DCAC alternating current side for power supply (fire-fighting unit, temperature control system and various air conditioning units, etc.). The fire-fighting unit mainly monitors the combustible gas, temperature, smoke and other information in the container to ensure the normal operation of the internal equipment; the temperature control system mainly monitors the temperature and humidity of the container, and controls the air conditioning unit to adjust the temperature and humidity in the system.

[0038] The split outdoor energy storage system is usually used in scenes such as self-generation and self-use, peak clipping and valley filling, or battery priority.

[0039] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A split outdoor energy storage system communication architecture, comprising: The split outdoor energy storage system communication architecture comprises an EMS data collector, a light storage integrated machine, a three-level BMS and a plurality of battery clusters. The battery cluster is composed of a plurality of battery boxes and one high-voltage box in series, the two-level BMS in the high-voltage box and the three-level BMS in each battery cluster communicate through a CAN bus, and the three-level BMS is connected with the light storage integrated machine through the CAN bus. The light storage integrated machine comprises a DCDC module and a DCAC module, wherein the DCDC module and the DCAC module are connected through the CAN bus. The EMS data collector is connected with the light storage integrated machine and the three-level BMS through the Ethernet using the ModBusTCP IP communication protocol.

2. The split outdoor energy storage system communication architecture of claim 1, wherein, The one-level BMS of each battery box in the battery cluster is connected to the two-level BMS in the high-voltage box in the battery cluster through the daisy chain communication mode.

3. The split outdoor energy storage system communication architecture of claim 1, wherein, Each battery cluster is arranged in each cabinet in parallel.

4. The split outdoor energy storage system communication architecture of claim 3, wherein, Each cabinet is provided with a fire extinguishing unit and an air conditioning unit, Each fire extinguishing unit and air conditioning unit is connected with the EMS controller through the RS485 using the ModBusRTU communication protocol.

5. The split outdoor energy storage system communication architecture of claim 1, wherein, The split outdoor energy storage system communication architecture further comprises a DIDO module, and the EMS data collector is connected with the DIDO module through the RS485 using the ModBusRTU communication protocol.

6. The split outdoor energy storage system communication architecture of claim 1, wherein, The EMS data collector is connected with the cloud through the Ethernet.

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