Air-cooled container energy storage system communication architecture

Abstract

The utility model discloses an air-cooled container energy storage system communication architecture. The air-cooled container energy storage system communication architecture comprises a plurality of battery clusters, a three-stage BMS, a PCS, a DCDC, an EMS controller and a plurality of air conditioning units. The EMS controller is communicated with the PCS and the DCDC in an RS485 mode by using a ModBus RTU (Remote Terminal Unit) communication protocol; the third-stage BMS communicates with the second-stage BMS in the high-voltage box in each battery cluster through a CAN bus, and the third-stage BMS communicates with the EMS through an Ethernet mode by using a ModBus TCP IP communication protocol; the DCDC communicates with the PCS through a CAN bus, and the PCS communicates with the three-stage BMS through the CAN bus; the EMS controller is communicated with each air conditioning unit by using a ModBus RTU communication protocol in an RS485 mode, and each air conditioning unit provides an air cooling medium for the corresponding battery cluster. Through the arrangement of the air-cooled container energy storage system communication architecture, the communication problem of an existing air-cooled container energy storage system is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to energy storage technical field especially relates to a wind -cooled container energy storage system communication architecture. BACKGROUND

[0002] Energy storage system refers to the energy of electric energy and other forms, 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 fast power exchange of energy.Energy storage 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 centralized wind-cooled container energy storage application more and more widely, usually single equipment capacity, volume is big, adopts container type assembly mode.Its system structure is that Pack battery is connected in series to form battery cluster, and multiple battery clusters are connected in parallel on the DC side, and are connected into an energy storage converter to convert into AC power, and then are connected into the grid after being boosted by transformer.Wind-cooled container energy storage structure is compact, capacity is large, control logic is simple, efficiency is high, easy to realize large-scale energy centralized deployment and optimization, plays an important role in grid side energy storage and large-scale renewable energy power station, so the research on communication architecture is particularly important. UTILITY MODEL CONTENT

[0005] The utility model discloses a wind-cooled container energy storage system communication architecture, and communication architecture setting is used to solve the communication problem of wind-cooled container energy storage system.

[0006] The utility model discloses a wind-cooled container energy storage system communication architecture, and communication architecture setting is used to solve the communication problem of wind-cooled container energy storage system.

[0007] A wind-cooled container energy storage system communication architecture, the wind-cooled container energy storage system communication architecture includes: a plurality of battery clusters, three levels BMS, PCS, DCDC, EMS controller and a plurality of air conditioning units;

[0008] The EMS controller is communicated with PCS and DCDC by RS485 mode and uses ModBusRTU communication protocol communication;

[0009] The battery cluster is connected in series by a plurality of battery boxes and 1 high voltage box, the three levels BMS and the secondary BMS in the high voltage box in each battery cluster are communicated by CAN bus, and the three levels BMS and EMS are communicated by Ethernet mode and use ModBusTCP IP communication protocol communication;

[0010] The DCDC and the PCS communicate through a CAN bus, and the PCS and the three-level BMS communicate through a CAN bus;

[0011] The EMS controller and each air conditioning unit communicate through an RS485 mode using a ModBusRTU communication protocol, and each air conditioning unit provides air cooling medium for the corresponding battery cluster.

[0012] According to a preferred embodiment, the first-level BMS of each battery box in the battery cluster is connected to the second-level BMS in the high-voltage box of the battery cluster through daisy chain communication.

[0013] According to a preferred embodiment, each battery cluster is arranged at different positions in the container body.

[0014] According to a preferred embodiment, the air-cooled container energy storage system communication architecture further comprises a plurality of local cameras, and the EMS controller and each local camera communicate through Ethernet.

[0015] According to a preferred embodiment, a video switcher is arranged between the EMS controller and each local camera; the EMS controller and the video switcher communicate through Ethernet, and the video switcher and each local camera communicate through Ethernet.

[0016] According to a preferred embodiment, the air-cooled container energy storage system communication architecture further comprises a fire extinguishing system and a temperature control system, and the EMS controller and the fire extinguishing system and the temperature control system communicate through an RS485 mode using a ModBusRTU communication protocol.

[0017] According to a preferred embodiment, the air-cooled container energy storage system communication architecture further comprises a local HMI display unit, and the EMS controller and the local HMI display unit communicate through an RS485 mode using a ModBusRTU communication protocol.

[0018] According to a preferred embodiment, the air-cooled container energy storage system communication architecture further comprises a DIDO module, and the EMS controller and the DIDO module communicate through an RS485 mode using a ModBusRTU communication protocol.

[0019] According to a preferred embodiment, the EMS controller is connected to the cloud through Ethernet.

[0020] The foregoing main scheme and each further selected scheme of the utility model can be freely combined to form multiple schemes, and all are the schemes that the utility model can adopt and requires protection.

[0021] The utility model discloses the beneficial effect:

[0022] Through the air-cooled container energy storage system communication architecture setting of the utility model, the existing air-cooled cooling type container energy storage system communication problem is solved, and the entrance of cloud access and local data storage and cloud data storage are provided, and auxiliary equipment is also contained in the communication structure, such as air conditioner, fire control system, temperature control system, UPS fault signal and other input and output devices. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the air-cooled container energy storage system communication architecture schematic diagram of the utility model;

[0024] Figure 2 It is the main loop system structure schematic diagram of the air-cooled container energy storage system of the utility model. DETAILED DESCRIPTION

[0025] The following through specific concrete example explains the implementation of the utility model, and the person skilled in the art can easily understand other advantages and effects of the utility model from the content disclosed in the specification.The utility model can also be implemented or applied through another different specific implementation, and each detail in the specification can be based on different viewpoints and applications, and various modifications or changes can be carried out without departing from the spirit of the utility model.It should be pointed out that the following examples and the features in the examples can be combined with each other without conflict.

[0026] It should be noted that: similar signs and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0027] In the description of the utility model, it needs to be explained that, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the utility model product is used, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description and cannot be understood as indicating or implying relative importance.

[0028] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0029] In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "setting", "mounting", "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; it can be the communication inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0030] In addition, the utility model points out that, in the utility model, if the specific structures, connection relationships, positional relationships, power source relationships and the like are not specifically written, the structures, connection relationships, positional relationships, power source relationships and the like involved in the utility model can be known by the skilled person in the art on the basis of the prior art without creative labor.

[0031] Embodiment 1:

[0032] Reference Figure 1 As shown in the figure, a wind-cooled container energy storage system communication architecture is shown, which comprises: a plurality of battery clusters, a three-level BMS, a PCS, a DCDC, an EMS controller and a plurality of air conditioning units.

[0033] The EMS controller communicates with the PCS and the DCDC through RS485 mode using ModBusRTU communication protocol. The three-level BMS communicates with the two-level BMS (corresponding to the high-voltage box in each battery cluster) in the high-voltage box in each battery cluster through RS485 mode using ModBusRTU communication protocol. Figure 1The BCU in the battery cluster communicates with the second-level BMS in the high-voltage box through the CAN bus, and the third-level BMS communicates with the EMS through the ModBusTCP IP communication protocol via the Ethernet.

[0034] Preferably, the first-level BMS of each battery box in the battery cluster is connected to the second-level BMS in the high-voltage box in the battery cluster through daisy chain communication. Each battery cluster is arranged at different positions in the container body.

[0035] Preferably, the air-cooled container energy storage system communication architecture further comprises a plurality of local cameras for completing real-time monitoring of each battery cluster. The EMS controller communicates with each local camera through Ethernet.

[0036] Further, a video switcher is arranged between the EMS controller and each local camera. The EMS controller communicates with the video switcher through Ethernet, and the video switcher communicates with each local camera through Ethernet.

[0037] Preferably, the air-cooled container energy storage system communication architecture further comprises a fire-fighting system, a temperature control system, and a plurality of air conditioning units. The EMS controller communicates with the fire-fighting system, the temperature control system, and each air conditioning unit through the ModBusRTU communication protocol via RS485.

[0038] Preferably, the air-cooled container energy storage system communication architecture further comprises a local HMI display unit. The EMS controller communicates with the local HMI display unit through the ModBusRTU communication protocol via RS485.

[0039] Preferably, the air-cooled container energy storage system communication architecture further comprises a DIDO module. The EMS controller communicates with the DIDO module through the ModBusRTU communication protocol via RS485.

[0040] Specifically, the DIDO module mainly collects some dry contact and wet contact signal alarms (such as water immersion sensor signals, air conditioning fault signals, UPS signals, fire-fighting primary, secondary, and tertiary signals, direct current side bus switch signals, AC / DC surge protection grounding signals, and emergency stop signals) of the local equipment. The output signals of the DIDO module are used to drive some local relay micro circuit breakers or other equipment power off or operate other actions. All the above are communicated with the EMS controller to upload information and interact data through the ModBusRTU communication protocol via RS485.

[0041] Preferably, the EMS controller is connected with the cloud through Ethernet. The data is uploaded to the cloud by accessing external network cable or 4G, 5G wireless routing, including but not limited to.

[0042] The air-cooled container energy storage system communication architecture of the utility model solves the communication problem of the existing air-cooled cooling type container energy storage system, provides an access portal for cloud access and local data storage and cloud data storage, and also includes auxiliary equipment in the communication structure, such as air conditioners, fire extinguishing systems, temperature control systems, UPS fault signals and other input and output devices.

[0043] Reference Figure 2 As shown in the figure, the figure shows a main loop system structure diagram of an air-cooled container energy storage system. A plurality of series-connected battery boxes and a high-voltage box are connected in series to form a battery cluster. Different battery cluster main loops are connected in parallel to form a plurality of battery clusters.

[0044] The plurality of battery clusters are arranged at different positions in the box body, connected in parallel through direct current input, connected to the PCS direct current side and the DCDC output side, and the DCDC input side is connected to photovoltaic.

[0045] The PCS AC side can be connected with the power grid and the load. The internal AC power supply of the system is taken from the PCS AC side for power supply (fire extinguishing system, temperature control system and each air conditioning unit, etc.). The fire extinguishing system 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 to control the air conditioning unit to work and adjust the temperature and humidity in the system. The air-cooled container energy storage system is usually used in self-generation and self-use, peak clipping and valley filling or battery priority scenes.

[0046] The above is only a preferred embodiment of the utility model, and does not limit the utility model. Any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An air-cooled container energy storage system communication architecture, comprising: The air-cooled container energy storage system communication architecture comprises a plurality of battery clusters, a three-level BMS, a PCS, a DCDC, an EMS controller and a plurality of air conditioning units. The EMS controller communicates with the PCS and the DCDC through RS485 using ModBusRTU communication protocol. The battery cluster is composed of a plurality of battery boxes and one high-voltage box in series, the three-level BMS communicates with the two-level BMS in the high-voltage box in each battery cluster through CAN bus, and the three-level BMS communicates with the EMS through Ethernet using ModBusTCP IP communication protocol. The DCDC communicates with the PCS through CAN bus, and the PCS communicates with the three-level BMS through CAN bus. The EMS controller communicates with each air conditioning unit through RS485 using ModBusRTU communication protocol, and each air conditioning unit provides air cooling medium for the corresponding battery cluster.

2. The air-cooled container energy storage system communication architecture of claim 1, wherein, The primary 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 daisy chain communication mode.

3. The air-cooled container energy storage system communication architecture of claim 1, wherein, Each battery cluster is arranged at different positions in the container body.

4. The air-cooled container energy storage system communication architecture of claim 1, wherein, The air-cooled container energy storage system communication architecture further comprises a plurality of local cameras, and the EMS controller communicates with each local camera through Ethernet.

5. The air-cooled container energy storage system communication architecture of claim 4, wherein, A video switcher is arranged between the EMS controller and each local camera. The EMS controller communicates with the video switcher through Ethernet, and the video switcher communicates with each local camera through Ethernet.

6. The air-cooled container energy storage system communication architecture of claim 1, wherein, The air-cooled container energy storage system communication architecture further comprises a fire extinguishing system and a temperature control system, The EMS controller communicates with the fire extinguishing system and the temperature control system through RS485 using ModBusRTU communication protocol.

7. The air-cooled container energy storage system communication architecture of claim 1, wherein, The air-cooled container energy storage system communication architecture further comprises a local HMI display unit, and the EMS controller communicates with the local HMI display unit through RS485 using ModBusRTU communication protocol.

8. The air-cooled container energy storage system communication architecture of claim 1, wherein, The air-cooled container energy storage system communication architecture further comprises a DIDO module, and the EMS controller communicates with the DIDO module through RS485 using ModBusRTU communication protocol.

9. The air-cooled container energy storage system communication architecture of claim 1, wherein, The EMS controller is connected to the cloud through Ethernet.

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